1 /* perl.h 2 * 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 4 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall and others 5 * 6 * You may distribute under the terms of either the GNU General Public 7 * License or the Artistic License, as specified in the README file. 8 * 9 */ 10 11 #ifndef H_PERL 12 #define H_PERL 1 13 14 #if defined(__HP_cc) || defined(__HP_aCC) 15 /* The HPUX compiler for Itanium is very picky and warns about 16 * things that gcc doesn't and that we would prefer it does not. 17 * So on that platform silence certain warnings unlaterally. */ 18 19 /* silence "relational operator ">" always evaluates to 'false'" 20 * warnings. We get a LOT of these from the memwrap checks. */ 21 #pragma diag_suppress 4276 22 23 /* silence "may cause misaligned access" warnings from our "OO in C" 24 * type logic. we do this a lot and if it was broken we would fail tests 25 * all over the place */ 26 #pragma diag_suppress 4232 27 28 #endif /* end HPUX warning disablement */ 29 30 #ifdef PERL_FOR_X2P 31 /* 32 * This file is being used for x2p stuff. 33 * Above symbol is defined via -D in 'x2p/Makefile.SH' 34 * Decouple x2p stuff from some of perls more extreme eccentricities. 35 */ 36 #undef MULTIPLICITY 37 #undef USE_STDIO 38 #define USE_STDIO 39 #endif /* PERL_FOR_X2P */ 40 41 /* Treat the SVs on the argument stack as having been reference counted. 42 * (Experimental). 43 */ 44 /* #define PERL_RC_STACK */ 45 46 #include "config.h" 47 48 /* This fakes up using Mingw for locale handling. In order to not define WIN32 49 * in this file (and hence throughout the code that isn't expecting it), this 50 * doesn't define that, but defines the appropriate things that would otherwise 51 * be defined later in the file. Hence those and here must be kept in sync */ 52 #ifdef WIN32_USE_FAKE_OLD_MINGW_LOCALES 53 # define UINT unsigned int 54 # undef USE_THREAD_SAFE_LOCALE 55 # define NO_POSIX_2008_LOCALE 56 # undef HAS_NL_LANGINFO 57 # undef HAS_NL_LANGINFO_L 58 # undef _UCRT 59 # ifdef USE_LOCALE 60 # define TS_W32_BROKEN_LOCALECONV 61 # ifdef USE_THREADS 62 # define EMULATE_THREAD_SAFE_LOCALES 63 # endif 64 # endif 65 #endif 66 67 /* 68 =for apidoc_section $debugging 69 =for apidoc CmnW ||comma_aDEPTH 70 Some functions when compiled under DEBUGGING take an extra final argument named 71 C<depth>, indicating the C stack depth. This argument is omitted otherwise. 72 This macro expands to either S<C<, depth>> under DEBUGGING, or to nothing at 73 all when not under DEBUGGING, reducing the number of C<#ifdef>'s in the code. 74 75 The program is responsible for maintaining the correct value for C<depth>. 76 77 =for apidoc CyW ||comma_pDEPTH 78 This is used in the prototype declarations for functions that take a L</C<comma_aDEPTH>> 79 final parameter, much like L<C<pTHX_>|perlguts/Background and MULTIPLICITY> 80 is used in functions that take a thread context initial parameter. 81 82 =for apidoc CmnW ||debug_aDEPTH 83 Same as L</C<comma_aDEPTH>> but with no leading argument. Intended for functions with 84 no normal arguments, and used by L</C<comma_aDEPTH>> itself. 85 86 =for apidoc CmnW ||debug_pDEPTH 87 Same as L</C<comma_pDEPTH>> but with no leading argument. Intended for functions with 88 no normal arguments, and used by L</C<comma_pDEPTH>> itself. 89 90 =cut 91 */ 92 93 #ifdef DEBUGGING 94 # define debug_pDEPTH U32 depth 95 # define comma_pDEPTH ,debug_pDEPTH 96 # define debug_aDEPTH depth 97 # define comma_aDEPTH ,debug_aDEPTH 98 #else 99 # define debug_aDEPTH 100 # define comma_aDEPTH 101 # define debug_pDEPTH 102 # define comma_pDEPTH 103 #endif 104 105 /* NOTE 1: that with gcc -std=c89 the __STDC_VERSION__ is *not* defined 106 * because the __STDC_VERSION__ became a thing only with C90. Therefore, 107 * with gcc, HAS_C99 will never become true as long as we use -std=c89. 108 109 * NOTE 2: headers lie. Do not expect that if HAS_C99 gets to be true, 110 * all the C99 features are there and are correct. */ 111 #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \ 112 defined(_STDC_C99) || defined(__c99) 113 # define HAS_C99 1 114 #endif 115 116 /* ========================================================================= 117 * The defines from here to the following ===== line are unfortunately 118 * duplicated in makedef.pl, and changes here MUST also be made there */ 119 120 /* See L<perlguts/"The Perl API"> for detailed notes on 121 * MULTIPLICITY and PERL_IMPLICIT_SYS */ 122 123 #ifdef USE_THREADS 124 # if !defined(MULTIPLICITY) 125 # define MULTIPLICITY 126 # endif 127 #endif 128 129 /* PERL_IMPLICIT_CONTEXT is a legacy synonym for MULTIPLICITY */ 130 #if defined(MULTIPLICITY) \ 131 && ! defined(PERL_CORE) \ 132 && ! defined(PERL_IMPLICIT_CONTEXT) 133 # define PERL_IMPLICIT_CONTEXT 134 #endif 135 #if defined(PERL_IMPLICIT_CONTEXT) && !defined(MULTIPLICITY) 136 # define MULTIPLICITY 137 #endif 138 #if defined(PERL_CORE) && defined(PERL_IMPLICIT_CONTEXT) 139 # pragma message("PERL_IMPLICIT_CONTEXT was removed from core perl. It does not do anything. Undeffing it for compilation") 140 # undef PERL_IMPLICIT_CONTEXT 141 #endif 142 143 /* undef WIN32 when building on Cygwin (for libwin32) - gph */ 144 #ifdef __CYGWIN__ 145 # undef WIN32 146 # undef _WIN32 147 #endif 148 149 /* Use the reentrant APIs like localtime_r and getpwent_r */ 150 /* Win32 has naturally threadsafe libraries, no need to use any _r variants. 151 * XXX KEEP makedef.pl copy of this code in sync */ 152 #if defined(MULTIPLICITY) && !defined(USE_REENTRANT_API) && !defined(WIN32) 153 # define USE_REENTRANT_API 154 #endif 155 156 /* end of makedef.pl logic duplication. But there are other groups below. 157 * ========================================================================= */ 158 159 /* 160 =for apidoc_section $directives 161 =for apidoc AmnUu|void|EXTERN_C 162 When not compiling using C++, expands to nothing. 163 Otherwise is used in a declaration of a function to indicate the function 164 should have external C linkage. This is required for things to work for just 165 about all functions with external linkage compiled into perl. 166 Often, you can use C<L</START_EXTERN_C>> ... C<L</END_EXTERN_C>> blocks 167 surrounding all your code that you need to have this linkage. 168 169 Example usage: 170 171 EXTERN_C int flock(int fd, int op); 172 173 =for apidoc Amnu||START_EXTERN_C 174 When not compiling using C++, expands to nothing. 175 Otherwise begins a section of code in which every function will effectively 176 have C<L</EXTERN_C>> applied to it, that is to have external C linkage. The 177 section is ended by a C<L</END_EXTERN_C>>. 178 179 =for apidoc Amnu||END_EXTERN_C 180 When not compiling using C++, expands to nothing. 181 Otherwise ends a section of code already begun by a C<L</START_EXTERN_C>>. 182 183 =cut 184 */ 185 186 #undef START_EXTERN_C 187 #undef END_EXTERN_C 188 #undef EXTERN_C 189 #ifdef __cplusplus 190 # define EXTERN_C extern "C" 191 # define START_EXTERN_C EXTERN_C { 192 # define END_EXTERN_C } 193 #else 194 # define START_EXTERN_C 195 # define END_EXTERN_C 196 # define EXTERN_C extern 197 #endif 198 199 /* Fallback definitions in case we don't have definitions from config.h. 200 This should only matter for systems that don't use Configure and 201 haven't been modified to define PERL_STATIC_INLINE yet. 202 */ 203 #if !defined(PERL_STATIC_INLINE) 204 # ifdef HAS_STATIC_INLINE 205 # define PERL_STATIC_INLINE static inline 206 # else 207 # define PERL_STATIC_INLINE static 208 # endif 209 #endif 210 211 /* 212 =for apidoc_section $concurrency 213 =for apidoc AmU|void|dTHXa|PerlInterpreter * a 214 On threaded perls, set C<pTHX> to C<a>; on unthreaded perls, do nothing 215 216 =for apidoc AmU|void|dTHXoa|PerlInterpreter * a 217 Now a synonym for C<L</dTHXa>>. 218 219 =cut 220 */ 221 222 #ifdef MULTIPLICITY 223 # define tTHX PerlInterpreter* 224 # define pTHX tTHX my_perl PERL_UNUSED_DECL 225 # define aTHX my_perl 226 # define aTHXa(a) aTHX = (tTHX)a 227 # define dTHXa(a) pTHX = (tTHX)a 228 # define dTHX pTHX = PERL_GET_THX 229 # define pTHX_ pTHX, 230 # define aTHX_ aTHX, 231 # define pTHX_1 2 232 # define pTHX_2 3 233 # define pTHX_3 4 234 # define pTHX_4 5 235 # define pTHX_5 6 236 # define pTHX_6 7 237 # define pTHX_7 8 238 # define pTHX_8 9 239 # define pTHX_9 10 240 # define pTHX_12 13 241 # if defined(DEBUGGING) && !defined(PERL_TRACK_MEMPOOL) 242 # define PERL_TRACK_MEMPOOL 243 # endif 244 #else 245 # undef PERL_TRACK_MEMPOOL 246 #endif 247 248 #ifdef DEBUGGING 249 # define dTHX_DEBUGGING dTHX 250 #else 251 # define dTHX_DEBUGGING dNOOP 252 #endif 253 254 #define STATIC static 255 256 #ifndef PERL_CORE 257 /* Do not use these macros. They were part of PERL_OBJECT, which was an 258 * implementation of multiplicity using C++ objects. They have been left 259 * here solely for the sake of XS code which has incorrectly 260 * cargo-culted them. 261 * 262 * The only one Devel::PPPort handles is this; list it as deprecated 263 264 =for apidoc_section $concurrency 265 =for apidoc AmD|void|CPERLscope|void x 266 Now a no-op. 267 268 =cut 269 */ 270 # define CPERLscope(x) x 271 # define CPERLarg void 272 # define CPERLarg_ 273 # define _CPERLarg 274 # define PERL_OBJECT_THIS 275 # define _PERL_OBJECT_THIS 276 # define PERL_OBJECT_THIS_ 277 # define CALL_FPTR(fptr) (*fptr) 278 # define MEMBER_TO_FPTR(name) name 279 #endif /* !PERL_CORE */ 280 281 #ifdef PERL_RC_STACK 282 # define CALLRUNOPS Perl_runops_wrap 283 #else 284 # define CALLRUNOPS PL_runops 285 #endif 286 287 #define CALLREGCOMP(sv, flags) Perl_pregcomp(aTHX_ (sv),(flags)) 288 289 #define CALLREGCOMP_ENG(prog, sv, flags) (prog)->comp(aTHX_ sv, flags) 290 #define CALLREGEXEC(prog,stringarg,strend,strbeg,minend,sv,data,flags) \ 291 RX_ENGINE(prog)->exec(aTHX_ (prog),(stringarg),(strend), \ 292 (strbeg),(minend),(sv),(data),(flags)) 293 #define CALLREG_INTUIT_START(prog,sv,strbeg,strpos,strend,flags,data) \ 294 RX_ENGINE(prog)->intuit(aTHX_ (prog), (sv), (strbeg), (strpos), \ 295 (strend),(flags),(data)) 296 #define CALLREG_INTUIT_STRING(prog) \ 297 RX_ENGINE(prog)->checkstr(aTHX_ (prog)) 298 299 #define CALLREGFREE(prog) \ 300 Perl_pregfree(aTHX_ (prog)) 301 302 #define CALLREGFREE_PVT(prog) \ 303 if(prog && RX_ENGINE(prog)) RX_ENGINE(prog)->rxfree(aTHX_ (prog)) 304 305 #define CALLREG_NUMBUF_FETCH(rx,paren,usesv) \ 306 RX_ENGINE(rx)->numbered_buff_FETCH(aTHX_ (rx),(paren),(usesv)) 307 308 #define CALLREG_NUMBUF_STORE(rx,paren,value) \ 309 RX_ENGINE(rx)->numbered_buff_STORE(aTHX_ (rx),(paren),(value)) 310 311 #define CALLREG_NUMBUF_LENGTH(rx,sv,paren) \ 312 RX_ENGINE(rx)->numbered_buff_LENGTH(aTHX_ (rx),(sv),(paren)) 313 314 #define CALLREG_NAMED_BUFF_FETCH(rx, key, flags) \ 315 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_FETCH)) 316 317 #define CALLREG_NAMED_BUFF_STORE(rx, key, value, flags) \ 318 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), (value), ((flags) | RXapif_STORE)) 319 320 #define CALLREG_NAMED_BUFF_DELETE(rx, key, flags) \ 321 RX_ENGINE(rx)->named_buff(aTHX_ (rx),(key), NULL, ((flags) | RXapif_DELETE)) 322 323 #define CALLREG_NAMED_BUFF_CLEAR(rx, flags) \ 324 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_CLEAR)) 325 326 #define CALLREG_NAMED_BUFF_EXISTS(rx, key, flags) \ 327 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_EXISTS)) 328 329 #define CALLREG_NAMED_BUFF_FIRSTKEY(rx, flags) \ 330 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), NULL, ((flags) | RXapif_FIRSTKEY)) 331 332 #define CALLREG_NAMED_BUFF_NEXTKEY(rx, lastkey, flags) \ 333 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), (lastkey), ((flags) | RXapif_NEXTKEY)) 334 335 #define CALLREG_NAMED_BUFF_SCALAR(rx, flags) \ 336 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_SCALAR)) 337 338 #define CALLREG_NAMED_BUFF_COUNT(rx) \ 339 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, RXapif_REGNAMES_COUNT) 340 341 #define CALLREG_NAMED_BUFF_ALL(rx, flags) \ 342 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, flags) 343 344 #define CALLREG_PACKAGE(rx) \ 345 RX_ENGINE(rx)->qr_package(aTHX_ (rx)) 346 347 #if defined(USE_ITHREADS) 348 # define CALLREGDUPE(prog,param) \ 349 Perl_re_dup(aTHX_ (prog),(param)) 350 351 # define CALLREGDUPE_PVT(prog,param) \ 352 (prog ? RX_ENGINE(prog)->dupe(aTHX_ (prog),(param)) \ 353 : (REGEXP *)NULL) 354 #endif 355 356 /* some compilers impersonate gcc */ 357 #if defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER) 358 # define PERL_IS_GCC 1 359 #endif 360 361 #define PERL_GCC_VERSION_GE(major,minor,patch) \ 362 (((100000 * __GNUC__) + (1000 * __GNUC_MINOR__) + __GNUC_PATCHLEVEL__) \ 363 >= ((100000 * (major)) + (1000 * (minor)) + (patch))) 364 #define PERL_GCC_VERSION_GT(major,minor,patch) \ 365 (((100000 * __GNUC__) + (1000 * __GNUC_MINOR__) + __GNUC_PATCHLEVEL__) \ 366 > ((100000 * (major)) + (1000 * (minor)) + (patch))) 367 #define PERL_GCC_VERSION_LE(major,minor,patch) \ 368 (((100000 * __GNUC__) + (1000 * __GNUC_MINOR__) + __GNUC_PATCHLEVEL__) \ 369 <= ((100000 * (major)) + (1000 * (minor)) + (patch))) 370 #define PERL_GCC_VERSION_LT(major,minor,patch) \ 371 (((100000 * __GNUC__) + (1000 * __GNUC_MINOR__) + __GNUC_PATCHLEVEL__) \ 372 < ((100000 * (major)) + (1000 * (minor)) + (patch))) 373 374 /* In case Configure was not used (we are using a "canned config" 375 * such as Win32, or a cross-compilation setup, for example) try going 376 * by the gcc major and minor versions. One useful URL is 377 * http://www.ohse.de/uwe/articles/gcc-attributes.html, 378 * but contrary to this information warn_unused_result seems 379 * not to be in gcc 3.3.5, at least. --jhi 380 * Also, when building extensions with an installed perl, this allows 381 * the user to upgrade gcc and get the right attributes, rather than 382 * relying on the list generated at Configure time. --AD 383 * Set these up now otherwise we get confused when some of the <*thread.h> 384 * includes below indirectly pull in <perlio.h> (which needs to know if we 385 * have HASATTRIBUTE_FORMAT). 386 */ 387 388 #if defined __GNUC__ && !defined(__INTEL_COMPILER) 389 # if PERL_GCC_VERSION_GE(3,1,0) 390 # define HASATTRIBUTE_DEPRECATED 391 # endif 392 # if PERL_GCC_VERSION_GE(3,0,0) /* XXX Verify this version */ 393 # define HASATTRIBUTE_FORMAT 394 # if defined __MINGW32__ 395 # define PRINTF_FORMAT_NULL_OK 396 # endif 397 # endif 398 # if PERL_GCC_VERSION_GE(3,0,0) 399 # define HASATTRIBUTE_MALLOC 400 # endif 401 # if PERL_GCC_VERSION_GE(3,3,0) 402 # define HASATTRIBUTE_NONNULL 403 # endif 404 # if PERL_GCC_VERSION_GE(2,5,0) 405 # define HASATTRIBUTE_NORETURN 406 # endif 407 # if PERL_GCC_VERSION_GE(3,0,0) 408 # define HASATTRIBUTE_PURE 409 # endif 410 # if PERL_GCC_VERSION_GE(3,4,0) 411 # define HASATTRIBUTE_UNUSED 412 # endif 413 # if __GNUC__ == 3 && __GNUC_MINOR__ == 3 && !defined(__cplusplus) 414 # define HASATTRIBUTE_UNUSED /* gcc-3.3, but not g++-3.3. */ 415 # endif 416 # if PERL_GCC_VERSION_GE(3,4,0) 417 # define HASATTRIBUTE_WARN_UNUSED_RESULT 418 # endif 419 /* always_inline is buggy in gcc <= 4.6 and causes compilation errors */ 420 # if PERL_GCC_VERSION_GE(4,7,0) 421 # define HASATTRIBUTE_ALWAYS_INLINE 422 # endif 423 # if PERL_GCC_VERSION_GE(3,3,0) 424 # define HASATTRIBUTE_VISIBILITY 425 # endif 426 #endif 427 428 #ifdef HASATTRIBUTE_DEPRECATED 429 # define __attribute__deprecated__ __attribute__((deprecated)) 430 #endif 431 #ifdef HASATTRIBUTE_FORMAT 432 # define __attribute__format__(x,y,z) __attribute__((format(x,y,z))) 433 #endif 434 #ifdef HASATTRIBUTE_MALLOC 435 # define __attribute__malloc__ __attribute__((__malloc__)) 436 #endif 437 #ifdef HASATTRIBUTE_NONNULL 438 # define __attribute__nonnull__(a) __attribute__((nonnull(a))) 439 #endif 440 #ifdef HASATTRIBUTE_NORETURN 441 # define __attribute__noreturn__ __attribute__((noreturn)) 442 #endif 443 #ifdef HASATTRIBUTE_PURE 444 # define __attribute__pure__ __attribute__((pure)) 445 #endif 446 #ifdef HASATTRIBUTE_UNUSED 447 # define __attribute__unused__ __attribute__((unused)) 448 #endif 449 #ifdef HASATTRIBUTE_WARN_UNUSED_RESULT 450 # define __attribute__warn_unused_result__ __attribute__((warn_unused_result)) 451 #endif 452 #ifdef HASATTRIBUTE_ALWAYS_INLINE 453 /* always_inline is buggy in gcc <= 4.6 and causes compilation errors */ 454 # if !defined(PERL_IS_GCC) || PERL_GCC_VERSION_GE(4,7,0) 455 # define __attribute__always_inline__ __attribute__((always_inline)) 456 # endif 457 #endif 458 #if defined(HASATTRIBUTE_VISIBILITY) && !defined(_WIN32) && !defined(__CYGWIN__) 459 /* On Windows instead of this, we use __declspec(dllexport) and a .def file 460 * Cygwin works by exporting every global symbol, see the definition of ldflags 461 * near the end of hints/cygwin.sh and the visibility attribute doesn't appear 462 * to control that. 463 */ 464 # define __attribute__visibility__(x) __attribute__((visibility(x))) 465 #endif 466 467 /* If we haven't defined the attributes yet, define them to blank. */ 468 #ifndef __attribute__deprecated__ 469 # define __attribute__deprecated__ 470 #endif 471 #ifndef __attribute__format__ 472 # define __attribute__format__(x,y,z) 473 #endif 474 #ifndef __attribute__malloc__ 475 # define __attribute__malloc__ 476 #endif 477 #ifndef __attribute__nonnull__ 478 # define __attribute__nonnull__(a) 479 #endif 480 #ifndef __attribute__noreturn__ 481 # define __attribute__noreturn__ 482 #endif 483 #ifndef __attribute__pure__ 484 # define __attribute__pure__ 485 #endif 486 #ifndef __attribute__unused__ 487 # define __attribute__unused__ 488 #endif 489 #ifndef __attribute__warn_unused_result__ 490 # define __attribute__warn_unused_result__ 491 #endif 492 #ifndef __attribute__always_inline__ 493 # define __attribute__always_inline__ 494 #endif 495 #ifndef __attribute__visibility__ 496 # define __attribute__visibility__(x) 497 #endif 498 499 /* Some OS warn on NULL format to printf */ 500 #ifdef PRINTF_FORMAT_NULL_OK 501 # define __attribute__format__null_ok__(x,y,z) __attribute__format__(x,y,z) 502 #else 503 # define __attribute__format__null_ok__(x,y,z) 504 #endif 505 506 /* 507 * Because of backward compatibility reasons the PERL_UNUSED_DECL 508 * cannot be changed from postfix to PERL_UNUSED_DECL(x). Sigh. 509 * 510 * Note that there are C compilers such as MetroWerks CodeWarrior 511 * which do not have an "inlined" way (like the gcc __attribute__) of 512 * marking unused variables (they need e.g. a #pragma) and therefore 513 * cpp macros like PERL_UNUSED_DECL cannot work for this purpose, even 514 * if it were PERL_UNUSED_DECL(x), which it cannot be (see above). 515 */ 516 517 /* 518 =for apidoc_section $directives 519 =for apidoc AmnU||PERL_UNUSED_DECL 520 Tells the compiler that the parameter in the function prototype just before it 521 is not necessarily expected to be used in the function. Not that many 522 compilers understand this, so this should only be used in cases where 523 C<L</PERL_UNUSED_ARG>> can't conveniently be used. 524 525 Example usage: 526 527 =over 528 529 Signal_t 530 Perl_perly_sighandler(int sig, Siginfo_t *sip PERL_UNUSED_DECL, 531 void *uap PERL_UNUSED_DECL, bool safe) 532 533 =back 534 535 =cut 536 */ 537 538 #ifndef PERL_UNUSED_DECL 539 # define PERL_UNUSED_DECL __attribute__unused__ 540 #endif 541 542 /* gcc -Wall: 543 * for silencing unused variables that are actually used most of the time, 544 * but we cannot quite get rid of, such as "ax" in PPCODE+noargs xsubs, 545 * or variables/arguments that are used only in certain configurations. 546 */ 547 /* 548 =for apidoc Am;||PERL_UNUSED_ARG|void x 549 This is used to suppress compiler warnings that a parameter to a function is 550 not used. This situation can arise, for example, when a parameter is needed 551 under some configuration conditions, but not others, so that C preprocessor 552 conditional compilation causes it be used just sometimes. 553 554 =for apidoc Amn;||PERL_UNUSED_CONTEXT 555 This is used to suppress compiler warnings that the thread context parameter to 556 a function is not used. This situation can arise, for example, when a 557 C preprocessor conditional compilation causes it be used just some times. 558 559 =for apidoc Am;||PERL_UNUSED_VAR|void x 560 This is used to suppress compiler warnings that the variable I<x> is not used. 561 This situation can arise, for example, when a C preprocessor conditional 562 compilation causes it be used just some times. 563 564 =cut 565 */ 566 #ifndef PERL_UNUSED_ARG 567 # define PERL_UNUSED_ARG(x) ((void)sizeof(x)) 568 #endif 569 #ifndef PERL_UNUSED_VAR 570 # define PERL_UNUSED_VAR(x) ((void)sizeof(x)) 571 #endif 572 573 #if defined(MULTIPLICITY) 574 # define PERL_UNUSED_CONTEXT PERL_UNUSED_ARG(my_perl) 575 #else 576 # define PERL_UNUSED_CONTEXT 577 #endif 578 579 /* gcc (-ansi) -pedantic doesn't allow gcc statement expressions, 580 * g++ allows them but seems to have problems with them 581 * (insane errors ensue). 582 * g++ does not give insane errors now (RMB 2008-01-30, gcc 4.2.2). 583 */ 584 #if defined(PERL_GCC_PEDANTIC) || \ 585 (defined(__GNUC__) && defined(__cplusplus) && \ 586 (PERL_GCC_VERSION_LT(4,2,0))) 587 # ifndef PERL_GCC_BRACE_GROUPS_FORBIDDEN 588 # define PERL_GCC_BRACE_GROUPS_FORBIDDEN 589 # endif 590 #endif 591 592 /* 593 594 =for apidoc Am||PERL_UNUSED_RESULT|void x 595 596 This macro indicates to discard the return value of the function call inside 597 it, I<e.g.>, 598 599 PERL_UNUSED_RESULT(foo(a, b)) 600 601 The main reason for this is that the combination of C<gcc -Wunused-result> 602 (part of C<-Wall>) and the C<__attribute__((warn_unused_result))> cannot 603 be silenced with casting to C<void>. This causes trouble when the system 604 header files use the attribute. 605 606 Use C<PERL_UNUSED_RESULT> sparingly, though, since usually the warning 607 is there for a good reason: you might lose success/failure information, 608 or leak resources, or changes in resources. 609 610 But sometimes you just want to ignore the return value, I<e.g.>, on 611 codepaths soon ending up in abort, or in "best effort" attempts, 612 or in situations where there is no good way to handle failures. 613 614 Sometimes C<PERL_UNUSED_RESULT> might not be the most natural way: 615 another possibility is that you can capture the return value 616 and use C<L</PERL_UNUSED_VAR>> on that. 617 618 =cut 619 620 The __typeof__() is used instead of typeof() since typeof() is not 621 available under strict ISO C, and because of compilers masquerading 622 as gcc (clang and icc), we want exactly the gcc extension 623 __typeof__ and nothing else. 624 625 */ 626 #ifndef PERL_UNUSED_RESULT 627 # if defined(__GNUC__) && defined(HASATTRIBUTE_WARN_UNUSED_RESULT) 628 # define PERL_UNUSED_RESULT(v) STMT_START { __typeof__(v) z = (v); (void)sizeof(z); } STMT_END 629 # else 630 # define PERL_UNUSED_RESULT(v) ((void)(v)) 631 # endif 632 #endif 633 634 /* on gcc (and clang), specify that a warning should be temporarily 635 * ignored; e.g. 636 * 637 * GCC_DIAG_IGNORE_DECL(-Wmultichar); 638 * char b = 'ab'; 639 * GCC_DIAG_RESTORE_DECL; 640 * 641 * based on http://dbp-consulting.com/tutorials/SuppressingGCCWarnings.html 642 * 643 * Note that "pragma GCC diagnostic push/pop" was added in GCC 4.6, Mar 2011; 644 * clang only pretends to be GCC 4.2, but still supports push/pop. 645 * 646 * Note on usage: all macros must be used at a place where a declaration 647 * or statement can occur, i.e., not in the middle of an expression. 648 * *_DIAG_IGNORE() and *_DIAG_RESTORE can be used in any such place, but 649 * must be used without a following semicolon. *_DIAG_IGNORE_DECL() and 650 * *_DIAG_RESTORE_DECL must be used with a following semicolon, and behave 651 * syntactically as declarations (like dNOOP). *_DIAG_IGNORE_STMT() 652 * and *_DIAG_RESTORE_STMT must be used with a following semicolon, 653 * and behave syntactically as statements (like NOOP). 654 * 655 */ 656 657 #if defined(__clang__) || defined(__clang) || PERL_GCC_VERSION_GE(4,6,0) 658 # define GCC_DIAG_PRAGMA(x) _Pragma (#x) 659 /* clang has "clang diagnostic" pragmas, but also understands gcc. */ 660 # define GCC_DIAG_IGNORE(x) _Pragma("GCC diagnostic push") \ 661 GCC_DIAG_PRAGMA(GCC diagnostic ignored #x) 662 # define GCC_DIAG_RESTORE _Pragma("GCC diagnostic pop") 663 #else 664 # define GCC_DIAG_IGNORE(w) 665 # define GCC_DIAG_RESTORE 666 #endif 667 #define GCC_DIAG_IGNORE_DECL(x) GCC_DIAG_IGNORE(x) dNOOP 668 #define GCC_DIAG_RESTORE_DECL GCC_DIAG_RESTORE dNOOP 669 #define GCC_DIAG_IGNORE_STMT(x) GCC_DIAG_IGNORE(x) NOOP 670 #define GCC_DIAG_RESTORE_STMT GCC_DIAG_RESTORE NOOP 671 /* for clang specific pragmas */ 672 #if defined(__clang__) || defined(__clang) 673 # define CLANG_DIAG_PRAGMA(x) _Pragma (#x) 674 # define CLANG_DIAG_IGNORE(x) _Pragma("clang diagnostic push") \ 675 CLANG_DIAG_PRAGMA(clang diagnostic ignored #x) 676 # define CLANG_DIAG_RESTORE _Pragma("clang diagnostic pop") 677 #else 678 # define CLANG_DIAG_IGNORE(w) 679 # define CLANG_DIAG_RESTORE 680 #endif 681 #define CLANG_DIAG_IGNORE_DECL(x) CLANG_DIAG_IGNORE(x) dNOOP 682 #define CLANG_DIAG_RESTORE_DECL CLANG_DIAG_RESTORE dNOOP 683 #define CLANG_DIAG_IGNORE_STMT(x) CLANG_DIAG_IGNORE(x) NOOP 684 #define CLANG_DIAG_RESTORE_STMT CLANG_DIAG_RESTORE NOOP 685 686 #if defined(_MSC_VER) 687 # define MSVC_DIAG_IGNORE(x) __pragma(warning(push)) \ 688 __pragma(warning(disable : x)) 689 # define MSVC_DIAG_RESTORE __pragma(warning(pop)) 690 #else 691 # define MSVC_DIAG_IGNORE(x) 692 # define MSVC_DIAG_RESTORE 693 #endif 694 #define MSVC_DIAG_IGNORE_DECL(x) MSVC_DIAG_IGNORE(x) dNOOP 695 #define MSVC_DIAG_RESTORE_DECL MSVC_DIAG_RESTORE dNOOP 696 #define MSVC_DIAG_IGNORE_STMT(x) MSVC_DIAG_IGNORE(x) NOOP 697 #define MSVC_DIAG_RESTORE_STMT MSVC_DIAG_RESTORE NOOP 698 699 /* 700 =for apidoc Amn;||NOOP 701 Do nothing; typically used as a placeholder to replace something that used to 702 do something. 703 704 =for apidoc Amn;||dNOOP 705 Declare nothing; typically used as a placeholder to replace something that used 706 to declare something. Works on compilers that require declarations before any 707 code. 708 709 =cut 710 */ 711 #define NOOP ((void)0) 712 #define dNOOP struct Perl___notused_struct 713 714 #ifndef pTHX 715 /* Don't bother defining tTHX ; using it outside 716 * code guarded by MULTIPLICITY is an error. 717 */ 718 # define pTHX void 719 # define pTHX_ 720 # define aTHX 721 # define aTHX_ 722 # define aTHXa(a) NOOP 723 # define dTHXa(a) dNOOP 724 # define dTHX dNOOP 725 # define pTHX_1 1 726 # define pTHX_2 2 727 # define pTHX_3 3 728 # define pTHX_4 4 729 # define pTHX_5 5 730 # define pTHX_6 6 731 # define pTHX_7 7 732 # define pTHX_8 8 733 # define pTHX_9 9 734 # define pTHX_12 12 735 #endif 736 737 /* 738 =for apidoc_section $concurrency 739 =for apidoc AmnU||dVAR 740 This is now a synonym for dNOOP: declare nothing 741 742 =for apidoc_section $XS 743 =for apidoc Amn;||dMY_CXT_SV 744 Now a placeholder that declares nothing 745 746 =cut 747 */ 748 749 #ifndef PERL_CORE 750 /* Backwards compatibility macro for XS code. It used to be part of the 751 * PERL_GLOBAL_STRUCT(_PRIVATE) feature, which no longer exists */ 752 # define dVAR dNOOP 753 754 /* these are only defined for compatibility; should not be used internally. 755 * */ 756 # define dMY_CXT_SV dNOOP 757 # ifndef pTHXo 758 # define pTHXo pTHX 759 # define pTHXo_ pTHX_ 760 # define aTHXo aTHX 761 # define aTHXo_ aTHX_ 762 # define dTHXo dTHX 763 # define dTHXoa(x) dTHXa(x) 764 # endif 765 #endif 766 767 #ifndef pTHXx 768 # define pTHXx PerlInterpreter *my_perl 769 # define pTHXx_ pTHXx, 770 # define aTHXx my_perl 771 # define aTHXx_ aTHXx, 772 # define dTHXx dTHX 773 #endif 774 775 /* Under PERL_IMPLICIT_SYS (used in Windows for fork emulation) 776 * PerlIO_foo() expands to PL_StdIO->pFOO(PL_StdIO, ...). 777 * dTHXs is therefore needed for all functions using PerlIO_foo(). */ 778 #ifdef PERL_IMPLICIT_SYS 779 # define dTHXs dTHX 780 #else 781 # define dTHXs dNOOP 782 #endif 783 784 #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__cplusplus) 785 # ifndef PERL_USE_GCC_BRACE_GROUPS 786 # define PERL_USE_GCC_BRACE_GROUPS 787 # endif 788 #endif 789 790 /* 791 =for apidoc_section $directives 792 =for apidoc AmnUu|void|STMT_END 793 =for apidoc_item | |STMT_START 794 795 These allow a series of statements in a macro to be used as a single statement, 796 as in 797 798 if (x) STMT_START { ... } STMT_END else ... 799 800 Note that you can't return a value out of this construct and cannot use it as 801 an operand to the comma operator. These limit its utility. 802 803 But, a value could be returned by constructing the API so that a pointer is 804 passed and the macro dereferences this to set the return. If the value can be 805 any of various types, depending on context, you can handle that situation in 806 some situations by adding the type of the return as an extra accompanying 807 parameter: 808 809 #define foo(param, type) STMT_START { 810 type * param; *param = do_calc; ... 811 } STMT_END 812 813 This could be awkward, so consider instead using a C language C<static inline> 814 function. 815 816 If you do use this construct, it is easy to forget that it is a macro and not a 817 function, and hence fall into traps that might not show up until someone 818 someday writes code which contains names that clash with the ones you chose 819 here, or calls it with a parameter which is an expression with side effects, 820 the consequences of which you didn't think about. See L<perlhacktips/Writing 821 safer macros> for how to avoid these. 822 823 =for apidoc_section $genconfig 824 =for apidoc Amn#||PERL_USE_GCC_BRACE_GROUPS 825 826 This C pre-processor value, if defined, indicates that it is permissible to use 827 the GCC brace groups extension. However, use of this extension is DISCOURAGED. 828 Use a C<static inline> function instead. 829 830 The extension, of the form 831 832 ({ statement ... }) 833 834 turns the block consisting of I<statement ...> into an expression with a 835 value, unlike plain C language blocks. This can present optimization 836 possibilities, B<BUT>, unless you know for sure that this will never be 837 compiled without this extension being available and not forbidden, you need to 838 specify an alternative. Thus two code paths have to be maintained, which can 839 get out-of-sync. All these issues are solved by using a C<static inline> 840 function instead. 841 842 Perl can be configured to not use this feature by passing the parameter 843 C<-Accflags=-DPERL_GCC_BRACE_GROUPS_FORBIDDEN> to F<Configure>. 844 845 =for apidoc Amnh#||PERL_GCC_BRACE_GROUPS_FORBIDDEN 846 847 Example usage: 848 849 =over 850 851 #ifdef PERL_USE_GCC_BRACE_GROUPS 852 ... 853 #else 854 ... 855 #endif 856 857 =back 858 859 =cut 860 861 Trying to select a version that gives no warnings... 862 */ 863 #if !(defined(STMT_START) && defined(STMT_END)) 864 # define STMT_START do 865 # define STMT_END while (0) 866 #endif 867 868 #ifndef BYTEORDER /* Should never happen -- byteorder is in config.h */ 869 # define BYTEORDER 0x1234 870 #endif 871 872 /* 873 =for apidoc_section $genconfig 874 =for apidoc Amn#||ASCIIish 875 876 A preprocessor symbol that is defined iff the system is an ASCII platform; this 877 symbol would not be defined on C<L</EBCDIC>> platforms. 878 879 =cut 880 */ 881 #if 'A' == 65 && 'I' == 73 && 'J' == 74 && 'Z' == 90 882 # define ASCIIish 883 #else 884 # undef ASCIIish 885 #endif 886 887 /* 888 * The following contortions are brought to you on behalf of all the 889 * standards, semi-standards, de facto standards, not-so-de-facto standards 890 * of the world, as well as all the other botches anyone ever thought of. 891 * The basic theory is that if we work hard enough here, the rest of the 892 * code can be a lot prettier. Well, so much for theory. Sorry, Henry... 893 */ 894 895 /* define this once if either system, instead of cluttering up the src */ 896 #if defined(WIN32) 897 #define DOSISH 1 898 #endif 899 900 /* These exist only for back-compat with XS modules. */ 901 #ifndef PERL_CORE 902 #define VOL volatile 903 #define CAN_PROTOTYPE 904 #define _(args) args 905 #define I_LIMITS 906 #define I_STDARG 907 #define STANDARD_C 908 #endif 909 910 /* Don't compile 'code' if PERL_MEM_LOG is defined. This is used for 911 * constructs that don't play well when PERL_MEM_LOG is active, so that they 912 * automatically don't get compiled without having to use extra #ifdef's */ 913 #ifndef PERL_MEM_LOG 914 # define UNLESS_PERL_MEM_LOG(code) code 915 #else 916 # define UNLESS_PERL_MEM_LOG(code) 917 #endif 918 919 /* By compiling a perl with -DNO_TAINT_SUPPORT or -DSILENT_NO_TAINT_SUPPORT, 920 * you get a perl without taint support, but doubtlessly with a lesser 921 * degree of support. Do not do so unless you know exactly what it means 922 * technically, have a good reason to do so, and know exactly how the 923 * perl will be used. perls with -DSILENT_NO_TAINT_SUPPORT are considered 924 * a potential security risk due to flat out ignoring the security-relevant 925 * taint flags. This being said, a perl without taint support compiled in 926 * has marginal run-time performance benefits. 927 * SILENT_NO_TAINT_SUPPORT implies NO_TAINT_SUPPORT. 928 * SILENT_NO_TAINT_SUPPORT is the same as NO_TAINT_SUPPORT except it 929 * silently ignores -t/-T instead of throwing an exception. 930 * 931 * DANGER! Using NO_TAINT_SUPPORT or SILENT_NO_TAINT_SUPPORT 932 * voids your nonexistent warranty! 933 */ 934 #if defined(SILENT_NO_TAINT_SUPPORT) && !defined(NO_TAINT_SUPPORT) 935 # define NO_TAINT_SUPPORT 1 936 #endif 937 938 /* NO_TAINT_SUPPORT can be set to transform virtually all taint-related 939 * operations into no-ops for a very modest speed-up. Enable only if you 940 * know what you're doing: tests and CPAN modules' tests are bound to fail. 941 */ 942 #ifdef NO_TAINT_SUPPORT 943 # define TAINT NOOP 944 # define TAINT_NOT NOOP 945 # define TAINT_IF(c) NOOP 946 # define TAINT_ENV() NOOP 947 # define TAINT_PROPER(s) NOOP 948 # define TAINT_set(s) NOOP 949 # define TAINT_get 0 950 # define TAINTING_get 0 951 # define TAINTING_set(s) NOOP 952 # define TAINT_WARN_get 0 953 # define TAINT_WARN_set(s) NOOP 954 #else 955 956 /* 957 =for apidoc_section $tainting 958 =for apidoc Cm|void|TAINT 959 960 If we aren't in taint checking mode, do nothing; 961 otherwise indicate to L</C<TAINT_set>> and L</C<TAINT_PROPER>> that some 962 unspecified element is tainted. 963 964 =for apidoc Cm|void|TAINT_NOT 965 966 Remove any taintedness previously set by, I<e.g.>, C<TAINT>. 967 968 =for apidoc Cm|void|TAINT_IF|bool c 969 970 If C<c> evaluates to true, call L</C<TAINT>> to indicate that something is 971 tainted; otherwise do nothing. 972 973 =for apidoc Cmn|void|TAINT_ENV 974 975 Looks at several components of L<C<%ENV>|perlvar/%ENV> for taintedness, and 976 calls L</C<taint_proper>> if any are tainted. The components it searches are 977 things like C<$PATH>. 978 979 =for apidoc Cm|void|TAINT_PROPER|const char * s 980 981 If no element is tainted, do nothing; 982 otherwise output a message (containing C<s>) that indicates there is a 983 tainting violation. If such violations are fatal, it croaks. 984 985 =for apidoc Cm|void|TAINT_set|bool s 986 987 If C<s> is true, L</C<TAINT_get>> returns true; 988 If C<s> is false, L</C<TAINT_get>> returns false; 989 990 =for apidoc Cm|bool|TAINT_get 991 992 Returns a boolean as to whether some element is tainted or not. 993 994 =for apidoc Cm|bool|TAINTING_get 995 996 Returns a boolean as to whether taint checking is enabled or not. 997 998 =for apidoc Cm|void|TAINTING_set|bool s 999 1000 Turn taint checking mode off/on 1001 1002 =for apidoc Cm|bool|TAINT_WARN_get 1003 1004 Returns false if tainting violations are fatal; 1005 Returns true if they're just warnings 1006 1007 =for apidoc Cm|void|TAINT_WARN_set|bool s 1008 1009 C<s> being true indicates L</C<TAINT_WARN_get>> should return that tainting 1010 violations are just warnings 1011 1012 C<s> being false indicates L</C<TAINT_WARN_get>> should return that tainting 1013 violations are fatal. 1014 1015 =cut 1016 */ 1017 /* Set to tainted if we are running under tainting mode */ 1018 # define TAINT (PL_tainted = PL_tainting) 1019 1020 # define TAINT_NOT (PL_tainted = FALSE) /* Untaint */ 1021 # define TAINT_IF(c) if (UNLIKELY(c)) { TAINT; } /* Conditionally taint */ 1022 # define TAINT_ENV() if (UNLIKELY(PL_tainting)) { taint_env(); } 1023 /* croak or warn if tainting */ 1024 # define TAINT_PROPER(s) if (UNLIKELY(PL_tainting)) { \ 1025 taint_proper(NULL, s); \ 1026 } 1027 # define TAINT_set(s) (PL_tainted = cBOOL(s)) 1028 # define TAINT_get (cBOOL(UNLIKELY(PL_tainted))) /* Is something tainted? */ 1029 # define TAINTING_get (cBOOL(UNLIKELY(PL_tainting))) 1030 # define TAINTING_set(s) (PL_tainting = cBOOL(s)) 1031 # define TAINT_WARN_get (PL_taint_warn) 1032 # define TAINT_WARN_set(s) (PL_taint_warn = cBOOL(s)) 1033 #endif 1034 1035 /* flags used internally only within pp_subst and pp_substcont */ 1036 #ifdef PERL_CORE 1037 # define SUBST_TAINT_STR 1 /* string tainted */ 1038 # define SUBST_TAINT_PAT 2 /* pattern tainted */ 1039 # define SUBST_TAINT_REPL 4 /* replacement tainted */ 1040 # define SUBST_TAINT_RETAINT 8 /* use re'taint' in scope */ 1041 # define SUBST_TAINT_BOOLRET 16 /* return is boolean (don't taint) */ 1042 #endif 1043 1044 /* XXX All process group stuff is handled in pp_sys.c. Should these 1045 defines move there? If so, I could simplify this a lot. --AD 9/96. 1046 */ 1047 /* Process group stuff changed from traditional BSD to POSIX. 1048 perlfunc.pod documents the traditional BSD-style syntax, so we'll 1049 try to preserve that, if possible. 1050 */ 1051 #ifdef HAS_SETPGID 1052 # define BSD_SETPGRP(pid, pgrp) setpgid((pid), (pgrp)) 1053 #elif defined(HAS_SETPGRP) && defined(USE_BSD_SETPGRP) 1054 # define BSD_SETPGRP(pid, pgrp) setpgrp((pid), (pgrp)) 1055 #elif defined(HAS_SETPGRP2) 1056 # define BSD_SETPGRP(pid, pgrp) setpgrp2((pid), (pgrp)) 1057 #endif 1058 #if defined(BSD_SETPGRP) && !defined(HAS_SETPGRP) 1059 # define HAS_SETPGRP /* Well, effectively it does . . . */ 1060 #endif 1061 1062 #ifdef HAS_GETPGID 1063 # define BSD_GETPGRP(pid) getpgid((pid)) 1064 #elif defined(HAS_GETPGRP) && defined(USE_BSD_GETPGRP) 1065 # define BSD_GETPGRP(pid) getpgrp((pid)) 1066 #elif defined(HAS_GETPGRP2) 1067 # define BSD_GETPGRP(pid) getpgrp2((pid)) 1068 #endif 1069 #if defined(BSD_GETPGRP) && !defined(HAS_GETPGRP) 1070 # define HAS_GETPGRP /* Well, effectively it does . . . */ 1071 #endif 1072 1073 /* These are not exact synonyms, since setpgrp() and getpgrp() may 1074 have different behaviors, but perl.h used to define USE_BSDPGRP 1075 (prior to 5.003_05) so some extension might depend on it. 1076 */ 1077 #if defined(USE_BSD_SETPGRP) || defined(USE_BSD_GETPGRP) 1078 # ifndef USE_BSDPGRP 1079 # define USE_BSDPGRP 1080 # endif 1081 #endif 1082 1083 /* This define exists only for compatibility. It used to mean "my_setenv and 1084 * friends should use setenv/putenv, instead of manipulating environ directly", 1085 * which is now always the case. It's still defined to prevent XS modules from 1086 * using the no longer existing PL_use_safe_putenv variable. 1087 */ 1088 #define PERL_USE_SAFE_PUTENV 1089 1090 /* Control whether we set and test the stack high water mark. 1091 * 1092 * When enabled this checks that pp funcs and XSUBs properly EXTEND() 1093 * the stack. 1094 * 1095 * Debugging builds have HWM checks on by default, you can add 1096 * -DPERL_NO_HWM to ccflags to prevent those checks, or add 1097 * -DPERL_USE_HWM to ccflags to perform HWM checks even on 1098 * non-debugging builds. 1099 */ 1100 1101 #if defined PERL_NO_HWM 1102 # undef PERL_USE_HWM 1103 #elif defined PERL_USE_HWM 1104 /* nothing to do here */ 1105 #elif defined DEBUGGING && !defined DEBUGGING_RE_ONLY 1106 # define PERL_USE_HWM 1107 #endif 1108 1109 1110 /* HP-UX 10.X CMA (Common Multithreaded Architecture) insists that 1111 pthread.h must be included before all other header files. 1112 */ 1113 #if defined(USE_ITHREADS) && defined(PTHREAD_H_FIRST) && defined(I_PTHREAD) 1114 # include <pthread.h> 1115 #endif 1116 1117 #include <sys/types.h> 1118 1119 # ifdef I_WCHAR 1120 # include <wchar.h> 1121 # endif 1122 1123 # include <stdarg.h> 1124 1125 #ifdef I_STDINT 1126 # include <stdint.h> 1127 #endif 1128 1129 #include <ctype.h> 1130 #include <float.h> 1131 #include <limits.h> 1132 1133 #ifdef METHOD /* Defined by OSF/1 v3.0 by ctype.h */ 1134 #undef METHOD 1135 #endif 1136 1137 #ifdef I_LOCALE 1138 # include <locale.h> 1139 #endif 1140 1141 #ifdef NEED_XLOCALE_H 1142 # include <xlocale.h> 1143 #endif 1144 1145 /* Even if not using locales, this header should be #included so as to #define 1146 * some symbols which avoid #ifdefs to get things to compile. But make sure 1147 * the macro it calls does nothing */ 1148 #undef PERL_LOCALE_TABLE_ENTRY 1149 #define PERL_LOCALE_TABLE_ENTRY(name, call_back) 1150 #include "locale_table.h" 1151 1152 #include "perl_langinfo.h" /* Needed for _NL_LOCALE_NAME */ 1153 1154 /* ========================================================================= 1155 * The defines from here to the following ===== line are unfortunately 1156 * duplicated in makedef.pl, and changes here MUST also be made there */ 1157 1158 /* If not forbidden, we enable locale handling if either 1) the POSIX 2008 1159 * functions are available, or 2) just the setlocale() function. This logic is 1160 * repeated in t/loc_tools.pl and makedef.pl; The three should be kept in 1161 * sync. */ 1162 #if ! defined(NO_LOCALE) 1163 # if ! defined(NO_POSIX_2008_LOCALE) \ 1164 && defined(HAS_NEWLOCALE) \ 1165 && defined(HAS_USELOCALE) \ 1166 && defined(HAS_DUPLOCALE) \ 1167 && defined(HAS_FREELOCALE) \ 1168 && defined(LC_ALL_MASK) 1169 1170 /* For simplicity, the code is written to assume that any platform advanced 1171 * enough to have the Posix 2008 locale functions has LC_ALL. The final 1172 * test above makes sure that assumption is valid */ 1173 1174 # define HAS_POSIX_2008_LOCALE 1175 # define USE_LOCALE 1176 # elif defined(HAS_SETLOCALE) 1177 # define USE_LOCALE 1178 # endif 1179 #endif 1180 1181 /* end of makedef.pl logic duplication. But there are other groups below. 1182 * ========================================================================= */ 1183 1184 #ifdef USE_LOCALE 1185 # define HAS_SKIP_LOCALE_INIT /* Solely for XS code to test for this 1186 #define */ 1187 #endif 1188 1189 /* XXX The Configure probe for categories must be updated when adding new 1190 * categories here */ 1191 1192 /* Create an enum that allows translation between the arbitrary locale category 1193 * integers that a platform has, and our desired values that range from 0..n 1194 * which makes array indexing feasible. 1195 * 1196 * In locale.c, there are a bunch of parallel arrays corresponding to this 1197 * enum. The first element of each corresponds with the first enum value here, 1198 * and so on. That means this enum must be in identical order with those 1199 * arrays. This is guaranteed by using locale_table.h in all instances. 1200 * (There are also asserts in locale.c that should fail if this gets 1201 * out-of-sync.) So, if the platform doesn't have LC_CTYPE, but does have 1202 * LC_NUMERIC, the code below will cause LC_NUMERIC_INDEX_ to be defined to be 1203 * 0. That way the foo_INDEX_ values are contiguous non-negative integers, 1204 * regardless of how the platform defines the actual locale categories. 1205 * 1206 * It is possible to tell perl it is not to pay attention to certain categories 1207 * that exist on a platform (which means they are always kept in the "C" 1208 * locale). For the ones perl is supposed to pay attention to, The hdr file 1209 * creates a 'USE_LOCALE_foo' #define. If any are to be ignored by perl, it 1210 * #defines HAS_IGNORED_LOCALE_CATEGORIES_ */ 1211 typedef enum { 1212 1213 #ifdef USE_LOCALE 1214 # undef PERL_LOCALE_TABLE_ENTRY 1215 # define PERL_LOCALE_TABLE_ENTRY(name, call_back) LC_ ## name ## _INDEX_, 1216 # include "locale_table.h" 1217 #endif /* USE_LOCALE */ 1218 1219 LC_ALL_INDEX_ /* Always defined, even if no LC_ALL on system */ 1220 1221 } locale_category_index; 1222 1223 #ifdef USE_LOCALE 1224 1225 /* And a count of all the locale categories, mainly for use in array 1226 * declarations */ 1227 # define LOCALE_CATEGORIES_COUNT_ (LC_ALL_INDEX_ + 1) 1228 1229 /* As a development aid for platforms that have LC_ALL name=value notation, 1230 * setting -Accflags=-DUSE_FAKE_LC_ALL_POSITIONAL_NOTATION, simulates a 1231 * platform that instead uses positional notation. By doing this, you can find 1232 * many bugs without trying it out on a real such platform. It would be 1233 * possible to create the reverse definitions for people who have ready access 1234 * to a posiional notation box, but harder to get a name=value box */ 1235 # if defined(USE_FAKE_LC_ALL_POSITIONAL_NOTATION) \ 1236 && defined(PERL_LC_ALL_USES_NAME_VALUE_PAIRS) 1237 # undef PERL_LC_ALL_USES_NAME_VALUE_PAIRS 1238 1239 # define PERL_LC_ALL_CATEGORY_POSITIONS_INIT /* Assumes glibc cateories */\ 1240 { 12, 11, 10, 9, 8, 7, 5, 4, 3, 2, 1, 0 } 1241 # define PERL_LC_ALL_SEPARATOR "/ = /" 1242 # endif 1243 /* ========================================================================= 1244 * The defines from here to the following ===== line are unfortunately 1245 * duplicated in makedef.pl, and changes here MUST also be made there */ 1246 1247 # if defined(USE_THREADS) && ! defined(NO_LOCALE_THREADS) 1248 # define USE_LOCALE_THREADS 1249 # endif 1250 1251 /* Use POSIX 2008 locales if available, and no alternative exists 1252 * ('setlocale()' is the alternative); or is threaded and not forbidden to 1253 * use them */ 1254 # if ( defined(HAS_POSIX_2008_LOCALE) \ 1255 && ( ! defined(HAS_SETLOCALE) \ 1256 || ( defined(USE_LOCALE_THREADS) \ 1257 && ! defined(NO_POSIX_2008_LOCALE))) \ 1258 && ! defined(NO_THREAD_SAFE_LOCALE)) 1259 # define USE_POSIX_2008_LOCALE 1260 # endif 1261 1262 /* On threaded builds, use thread-safe locales if they are available and not 1263 * forbidden. Availability is when we are using POSIX 2008 locales, or 1264 * Windows for any vintage recent enough to have _MSC_VER defined, or are 1265 * using UCRT (principally MINGW in this latter case) */ 1266 # if defined(USE_LOCALE_THREADS) && ! defined(NO_THREAD_SAFE_LOCALE) 1267 # if defined(USE_POSIX_2008_LOCALE) \ 1268 || (defined(WIN32) && (defined(_MSC_VER) || (defined(_UCRT)))) 1269 # define USE_THREAD_SAFE_LOCALE 1270 # endif 1271 # endif 1272 1273 # ifdef USE_POSIX_2008_LOCALE 1274 # if defined(HAS_QUERYLOCALE) \ 1275 /* Use querylocale if has it, or has the glibc internal \ 1276 * undocumented equivalent (if not forbidden). */ \ 1277 || ( defined(_NL_LOCALE_NAME) \ 1278 && ! defined(NO_USE_NL_LOCALE_NAME) \ 1279 /* nl_langinfo_l almost certainly will exist on systems that \ 1280 * have _NL_LOCALE_NAME, so there is nothing lost by \ 1281 * requiring it instead of also allowing plain nl_langinfo(). \ 1282 * And experience indicates that its glibc implementation is \ 1283 * thread-safe, eliminating code complications */ \ 1284 && defined(HAS_NL_LANGINFO_L) \ 1285 /* On systems that accept any locale name, the real \ 1286 * underlying locale is often returned by this internal \ 1287 * langinfo item, so we can't use it */ \ 1288 && ! defined(SETLOCALE_ACCEPTS_ANY_LOCALE_NAME)) 1289 # define USE_QUERYLOCALE 1290 # endif 1291 # endif 1292 1293 /* POSIX 2008 has no means of finding out the current locale without a 1294 * querylocale; so must keep track of it ourselves */ 1295 # if (defined(USE_POSIX_2008_LOCALE) && ! defined(USE_QUERYLOCALE)) 1296 # define USE_PL_CURLOCALES 1297 # endif 1298 1299 # if defined(WIN32) 1300 1301 /* We need to be able to map the current value of what the tTHX context 1302 * thinks LC_ALL is so as to inform the Windows libc when switching 1303 * contexts. */ 1304 # if defined(USE_THREAD_SAFE_LOCALE) 1305 # define USE_PL_CUR_LC_ALL 1306 # endif 1307 1308 /* Assume MingW without UCRT has the broken localeconv() that Microsoft 1309 * fixed in VS 2015 */ 1310 # if ! defined(_MSC_VER) && ! defined(_UCRT) 1311 # define TS_W32_BROKEN_LOCALECONV 1312 # endif 1313 # endif 1314 1315 /* POSIX 2008 and Windows with thread-safe locales keep locale information 1316 * in libc data. Therefore we must inform their libc's when the context 1317 * switches */ 1318 # if defined(MULTIPLICITY) && ( defined(USE_POSIX_2008_LOCALE) \ 1319 || ( defined(WIN32) \ 1320 && defined(USE_THREAD_SAFE_LOCALE))) 1321 # define USE_PERL_SWITCH_LOCALE_CONTEXT 1322 # endif 1323 #endif /* End of USE_LOCALE */ 1324 1325 /* end of makedef.pl logic duplication 1326 * ========================================================================= */ 1327 1328 #ifdef PERL_CORE 1329 1330 /* These typedefs are used in locale.c only (and documented there), but defined 1331 * here so that embed.fnc can generate the proper prototypes. */ 1332 1333 typedef enum { /* Is the locale UTF8? */ 1334 LOCALE_NOT_UTF8, 1335 LOCALE_IS_UTF8, 1336 LOCALE_UTF8NESS_UNKNOWN 1337 } locale_utf8ness_t; 1338 1339 typedef struct { 1340 const char *name; 1341 size_t offset; 1342 } lconv_offset_t; 1343 1344 typedef enum { 1345 INTERNAL_FORMAT, 1346 EXTERNAL_FORMAT_FOR_SET, 1347 EXTERNAL_FORMAT_FOR_QUERY 1348 } calc_LC_ALL_format; 1349 1350 typedef enum { 1351 WANT_VOID, 1352 WANT_TEMP_PV, 1353 WANT_PL_setlocale_buf, 1354 } calc_LC_ALL_return; 1355 1356 typedef enum { 1357 no_override, 1358 override_if_ignored, 1359 check_that_overridden 1360 } parse_LC_ALL_STRING_action; 1361 1362 typedef enum { 1363 invalid, 1364 no_array, 1365 only_element_0, 1366 full_array 1367 } parse_LC_ALL_string_return; 1368 1369 #endif 1370 1371 #include <setjmp.h> 1372 1373 #ifdef I_SYS_PARAM 1374 # ifdef PARAM_NEEDS_TYPES 1375 # include <sys/types.h> 1376 # endif 1377 # include <sys/param.h> 1378 #endif 1379 1380 /* On BSD-derived systems, <sys/param.h> defines BSD to a year-month 1381 value something like 199306. This may be useful if no more-specific 1382 feature test is available. 1383 */ 1384 #if defined(BSD) 1385 # ifndef BSDish 1386 # define BSDish 1387 # endif 1388 #endif 1389 1390 /* Use all the "standard" definitions */ 1391 #include <stdlib.h> 1392 1393 /* If this causes problems, set i_unistd=undef in the hint file. */ 1394 #ifdef I_UNISTD 1395 # if defined(__amigaos4__) 1396 # ifdef I_NETINET_IN 1397 # include <netinet/in.h> 1398 # endif 1399 # endif 1400 # include <unistd.h> 1401 # if defined(__amigaos4__) 1402 /* Under AmigaOS 4 newlib.library provides an environ. However using 1403 * it doesn't give us enough control over inheritance of variables by 1404 * subshells etc. so replace with custom version based on abc-shell 1405 * code. */ 1406 extern char **myenviron; 1407 # undef environ 1408 # define environ myenviron 1409 # endif 1410 #endif 1411 1412 /* for WCOREDUMP */ 1413 #ifdef I_SYS_WAIT 1414 # include <sys/wait.h> 1415 #endif 1416 1417 #if defined(HAS_SYSCALL) && !defined(HAS_SYSCALL_PROTO) 1418 EXTERN_C int syscall(int, ...); 1419 #endif 1420 1421 #if defined(HAS_USLEEP) && !defined(HAS_USLEEP_PROTO) 1422 EXTERN_C int usleep(unsigned int); 1423 #endif 1424 1425 /* Macros for correct constant construction. These are in C99 <stdint.h> 1426 * (so they will not be available in strict C89 mode), but they are nice, so 1427 * let's define them if necessary. */ 1428 1429 /* 1430 =for apidoc_section $integer 1431 =for apidoc Am|I16|INT16_C|number 1432 =for apidoc_item |I32|INT32_C|number 1433 =for apidoc_item |I64|INT64_C|number 1434 1435 Returns a token the C compiler recognizes for the constant C<number> of the 1436 corresponding integer type on the machine. 1437 1438 If the machine does not have a 64-bit type, C<INT64_C> is undefined. 1439 Use C<L</INTMAX_C>> to get the largest type available on the platform. 1440 1441 =for apidoc Am|U16|UINT16_C|number 1442 =for apidoc_item |U32|UINT32_C|number 1443 =for apidoc_item |U64|UINT64_C|number 1444 1445 Returns a token the C compiler recognizes for the constant C<number> of the 1446 corresponding unsigned integer type on the machine. 1447 1448 If the machine does not have a 64-bit type, C<UINT64_C> is undefined. 1449 Use C<L</UINTMAX_C>> to get the largest type available on the platform. 1450 1451 1452 =cut 1453 */ 1454 #ifndef UINT16_C 1455 # if INTSIZE >= 2 1456 # define UINT16_C(x) ((U16_TYPE)x##U) 1457 # else 1458 # define UINT16_C(x) ((U16_TYPE)x##UL) 1459 # endif 1460 #endif 1461 1462 #ifndef UINT32_C 1463 # if INTSIZE >= 4 1464 # define UINT32_C(x) ((U32_TYPE)x##U) 1465 # else 1466 # define UINT32_C(x) ((U32_TYPE)x##UL) 1467 # endif 1468 #endif 1469 1470 #ifdef I_STDINT 1471 typedef intmax_t PERL_INTMAX_T; 1472 typedef uintmax_t PERL_UINTMAX_T; 1473 #endif 1474 1475 /* N.B. We use QUADKIND here instead of HAS_QUAD here, because that doesn't 1476 * actually mean what it has always been documented to mean (see RT #119753) 1477 * and is explicitly turned off outside of core with dire warnings about 1478 * removing the undef. */ 1479 1480 #if defined(QUADKIND) 1481 # undef PeRl_INT64_C 1482 # undef PeRl_UINT64_C 1483 /* Prefer the native integer types (int and long) over long long 1484 * (which is not C89) and Win32-specific __int64. */ 1485 # if QUADKIND == QUAD_IS_INT && INTSIZE == 8 1486 # define PeRl_INT64_C(c) (c) 1487 # define PeRl_UINT64_C(c) CAT2(c,U) 1488 # endif 1489 # if QUADKIND == QUAD_IS_LONG && LONGSIZE == 8 1490 # define PeRl_INT64_C(c) CAT2(c,L) 1491 # define PeRl_UINT64_C(c) CAT2(c,UL) 1492 # endif 1493 # if QUADKIND == QUAD_IS_LONG_LONG && defined(HAS_LONG_LONG) 1494 # define PeRl_INT64_C(c) CAT2(c,LL) 1495 # define PeRl_UINT64_C(c) CAT2(c,ULL) 1496 # endif 1497 # if QUADKIND == QUAD_IS___INT64 1498 # define PeRl_INT64_C(c) CAT2(c,I64) 1499 # define PeRl_UINT64_C(c) CAT2(c,UI64) 1500 # endif 1501 # ifndef PeRl_INT64_C 1502 # define PeRl_INT64_C(c) ((I64)(c)) /* last resort */ 1503 # define PeRl_UINT64_C(c) ((U64TYPE)(c)) 1504 # endif 1505 /* In OS X the INT64_C/UINT64_C are defined with LL/ULL, which will 1506 * not fly with C89-pedantic gcc, so let's undefine them first so that 1507 * we can redefine them with our native integer preferring versions. */ 1508 # if defined(PERL_DARWIN) && defined(PERL_GCC_PEDANTIC) 1509 # undef INT64_C 1510 # undef UINT64_C 1511 # endif 1512 # ifndef INT64_C 1513 # define INT64_C(c) PeRl_INT64_C(c) 1514 # endif 1515 # ifndef UINT64_C 1516 # define UINT64_C(c) PeRl_UINT64_C(c) 1517 # endif 1518 1519 /* 1520 =for apidoc_section $integer 1521 =for apidoc Am||INTMAX_C|number 1522 Returns a token the C compiler recognizes for the constant C<number> of the 1523 widest integer type on the machine. For example, if the machine has C<long 1524 long>s, C<INTMAX_C(-1)> would yield 1525 1526 -1LL 1527 1528 See also, for example, C<L</INT32_C>>. 1529 1530 Use L</IV> to declare variables of the maximum usable size on this platform. 1531 1532 =for apidoc Am||UINTMAX_C|number 1533 Returns a token the C compiler recognizes for the constant C<number> of the 1534 widest unsigned integer type on the machine. For example, if the machine has 1535 C<long>s, C<UINTMAX_C(1)> would yield 1536 1537 1UL 1538 1539 See also, for example, C<L</UINT32_C>>. 1540 1541 Use L</UV> to declare variables of the maximum usable size on this platform. 1542 1543 =cut 1544 */ 1545 1546 # ifndef I_STDINT 1547 typedef I64TYPE PERL_INTMAX_T; 1548 typedef U64TYPE PERL_UINTMAX_T; 1549 # endif 1550 # ifndef INTMAX_C 1551 # define INTMAX_C(c) INT64_C(c) 1552 # endif 1553 # ifndef UINTMAX_C 1554 # define UINTMAX_C(c) UINT64_C(c) 1555 # endif 1556 1557 #else /* below QUADKIND is undefined */ 1558 1559 /* Perl doesn't work on 16 bit systems, so must be 32 bit */ 1560 # ifndef I_STDINT 1561 typedef I32TYPE PERL_INTMAX_T; 1562 typedef U32TYPE PERL_UINTMAX_T; 1563 # endif 1564 # ifndef INTMAX_C 1565 # define INTMAX_C(c) INT32_C(c) 1566 # endif 1567 # ifndef UINTMAX_C 1568 # define UINTMAX_C(c) UINT32_C(c) 1569 # endif 1570 1571 #endif /* no QUADKIND */ 1572 1573 #ifdef PERL_CORE 1574 1575 /* byte-swapping functions for big-/little-endian conversion */ 1576 # define _swab_16_(x) ((U16)( \ 1577 (((U16)(x) & UINT16_C(0x00ff)) << 8) | \ 1578 (((U16)(x) & UINT16_C(0xff00)) >> 8) )) 1579 1580 # define _swab_32_(x) ((U32)( \ 1581 (((U32)(x) & UINT32_C(0x000000ff)) << 24) | \ 1582 (((U32)(x) & UINT32_C(0x0000ff00)) << 8) | \ 1583 (((U32)(x) & UINT32_C(0x00ff0000)) >> 8) | \ 1584 (((U32)(x) & UINT32_C(0xff000000)) >> 24) )) 1585 1586 # ifdef HAS_QUAD 1587 # define _swab_64_(x) ((U64)( \ 1588 (((U64)(x) & UINT64_C(0x00000000000000ff)) << 56) | \ 1589 (((U64)(x) & UINT64_C(0x000000000000ff00)) << 40) | \ 1590 (((U64)(x) & UINT64_C(0x0000000000ff0000)) << 24) | \ 1591 (((U64)(x) & UINT64_C(0x00000000ff000000)) << 8) | \ 1592 (((U64)(x) & UINT64_C(0x000000ff00000000)) >> 8) | \ 1593 (((U64)(x) & UINT64_C(0x0000ff0000000000)) >> 24) | \ 1594 (((U64)(x) & UINT64_C(0x00ff000000000000)) >> 40) | \ 1595 (((U64)(x) & UINT64_C(0xff00000000000000)) >> 56) )) 1596 # endif 1597 1598 /* Maximum level of recursion */ 1599 #ifndef PERL_SUB_DEPTH_WARN 1600 #define PERL_SUB_DEPTH_WARN 100 1601 #endif 1602 1603 #endif /* PERL_CORE */ 1604 1605 /* Maximum number of args that may be passed to an OP_MULTICONCAT op. 1606 * It determines the size of local arrays in S_maybe_multiconcat() and 1607 * pp_multiconcat(). 1608 */ 1609 #define PERL_MULTICONCAT_MAXARG 64 1610 1611 /* The indexes of fields of a multiconcat aux struct. 1612 * The fixed fields are followed by nargs+1 const segment lengths, 1613 * and if utf8 and non-utf8 differ, a second nargs+1 set for utf8. 1614 */ 1615 1616 #define PERL_MULTICONCAT_IX_NARGS 0 /* number of arguments */ 1617 #define PERL_MULTICONCAT_IX_PLAIN_PV 1 /* non-utf8 constant string */ 1618 #define PERL_MULTICONCAT_IX_PLAIN_LEN 2 /* non-utf8 constant string length */ 1619 #define PERL_MULTICONCAT_IX_UTF8_PV 3 /* utf8 constant string */ 1620 #define PERL_MULTICONCAT_IX_UTF8_LEN 4 /* utf8 constant string length */ 1621 #define PERL_MULTICONCAT_IX_PADTMP0 5 /* up to 3 pad indexes for PADTMPs */ 1622 #define PERL_MULTICONCAT_IX_PADTMP1 6 1623 #define PERL_MULTICONCAT_IX_PADTMP2 7 1624 #define PERL_MULTICONCAT_IX_LENGTHS 8 /* first of nargs+1 const segment lens */ 1625 #define PERL_MULTICONCAT_HEADER_SIZE 8 /* The number of fields of a 1626 multiconcat header */ 1627 1628 /* We no longer default to creating a new SV for GvSV. 1629 Do this before embed. */ 1630 #ifndef PERL_CREATE_GVSV 1631 # ifndef PERL_DONT_CREATE_GVSV 1632 # define PERL_DONT_CREATE_GVSV 1633 # endif 1634 #endif 1635 1636 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME) 1637 #define PERL_USES_PL_PIDSTATUS 1638 #endif 1639 1640 #if !defined(OS2) && !defined(WIN32) 1641 #define PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION 1642 #endif 1643 1644 #define MEM_SIZE Size_t 1645 1646 /* av_extend and analogues enforce a minimum number of array elements. 1647 * This has been 4 elements (so a minimum key size of 3) for a long 1648 * time, but the rationale behind this seems to have been lost to the 1649 * mists of time. */ 1650 #ifndef PERL_ARRAY_NEW_MIN_KEY 1651 #define PERL_ARRAY_NEW_MIN_KEY 3 1652 #endif 1653 1654 /* Functions like Perl_sv_grow mandate a minimum string size. 1655 * This was 10 bytes for a long time, the rationale for which seems lost 1656 * to the mists of time. However, this does not correlate to what modern 1657 * malloc implementations will actually return, in particular the fact 1658 * that chunks are almost certainly some multiple of pointer size. The 1659 * default has therefore been revised to a more useful approximation. 1660 * Notes: The following is specifically conservative for 64 bit, since 1661 * most dlmalloc derivatives seem to serve a 3xPTRSIZE minimum chunk, 1662 * so the below perhaps should be: 1663 * ((PTRSIZE == 4) ? 12 : 24) 1664 * Configure probes for malloc_good_size, malloc_actual_size etc. 1665 * could be revised to record the actual minimum chunk size, to which 1666 * PERL_STRLEN_NEW_MIN could then be set. 1667 */ 1668 #ifndef PERL_STRLEN_NEW_MIN 1669 #define PERL_STRLEN_NEW_MIN ((PTRSIZE == 4) ? 12 : 16) 1670 #endif 1671 1672 /* Round all values passed to malloc up, by default to a multiple of 1673 sizeof(size_t) 1674 */ 1675 #ifndef PERL_STRLEN_ROUNDUP_QUANTUM 1676 #define PERL_STRLEN_ROUNDUP_QUANTUM Size_t_size 1677 #endif 1678 1679 /* sv_grow() will expand strings by at least a certain percentage of 1680 the previously *used* length to avoid excessive calls to realloc(). 1681 The default is 25% of the current length. 1682 */ 1683 #ifndef PERL_STRLEN_EXPAND_SHIFT 1684 # define PERL_STRLEN_EXPAND_SHIFT 2 1685 #endif 1686 1687 /* This use of offsetof() requires /Zc:offsetof- for VS2017 (and presumably 1688 * onwards) when building Socket.xs, but we can just use a different definition 1689 * for STRUCT_OFFSET instead. */ 1690 #if defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1910 1691 # define STRUCT_OFFSET(s,m) (Size_t)(&(((s *)0)->m)) 1692 #else 1693 # include <stddef.h> 1694 # define STRUCT_OFFSET(s,m) offsetof(s,m) 1695 #endif 1696 1697 /* ptrdiff_t is C11, so undef it under pedantic builds. (Actually it is 1698 * in C89, but apparently there are platforms where it doesn't exist. See 1699 * thread beginning at http://nntp.perl.org/group/perl.perl5.porters/251541.) 1700 * */ 1701 #ifdef PERL_GCC_PEDANTIC 1702 # undef HAS_PTRDIFF_T 1703 #endif 1704 1705 #ifdef HAS_PTRDIFF_T 1706 # define Ptrdiff_t ptrdiff_t 1707 #else 1708 # define Ptrdiff_t SSize_t 1709 #endif 1710 1711 # include <string.h> 1712 1713 /* This comes after <stdlib.h> so we don't try to change the standard 1714 * library prototypes; we'll use our own in proto.h instead. */ 1715 1716 #ifdef MYMALLOC 1717 # ifdef PERL_POLLUTE_MALLOC 1718 # ifndef PERL_EXTMALLOC_DEF 1719 # define Perl_malloc malloc 1720 # define Perl_calloc calloc 1721 # define Perl_realloc realloc 1722 # define Perl_mfree free 1723 # endif 1724 # else 1725 # define EMBEDMYMALLOC /* for compatibility */ 1726 # endif 1727 1728 # define safemalloc Perl_malloc 1729 # define safecalloc Perl_calloc 1730 # define saferealloc Perl_realloc 1731 # define safefree Perl_mfree 1732 # define CHECK_MALLOC_TOO_LATE_FOR_(code) STMT_START { \ 1733 if (!TAINTING_get && MallocCfg_ptr[MallocCfg_cfg_env_read]) \ 1734 code; \ 1735 } STMT_END 1736 # define CHECK_MALLOC_TOO_LATE_FOR(ch) \ 1737 CHECK_MALLOC_TOO_LATE_FOR_(MALLOC_TOO_LATE_FOR(ch)) 1738 # define panic_write2(s) write(2, s, strlen(s)) 1739 # define CHECK_MALLOC_TAINT(newval) \ 1740 CHECK_MALLOC_TOO_LATE_FOR_( \ 1741 if (newval) { \ 1742 PERL_UNUSED_RESULT(panic_write2("panic: tainting with $ENV{PERL_MALLOC_OPT}\n"));\ 1743 exit(1); }) 1744 # define MALLOC_CHECK_TAINT(argc,argv,env) \ 1745 STMT_START { \ 1746 if (doing_taint(argc,argv,env)) { \ 1747 MallocCfg_ptr[MallocCfg_skip_cfg_env] = 1; \ 1748 } \ 1749 } STMT_END; 1750 #else /* MYMALLOC */ 1751 # define safemalloc safesysmalloc 1752 # define safecalloc safesyscalloc 1753 # define saferealloc safesysrealloc 1754 # define safefree safesysfree 1755 # define CHECK_MALLOC_TOO_LATE_FOR(ch) ((void)0) 1756 # define CHECK_MALLOC_TAINT(newval) ((void)0) 1757 # define MALLOC_CHECK_TAINT(argc,argv,env) 1758 #endif /* MYMALLOC */ 1759 1760 /* diag_listed_as: "-T" is on the #! line, it must also be used on the command line */ 1761 #define TOO_LATE_FOR_(ch,what) Perl_croak(aTHX_ "\"-%c\" is on the #! line, it must also be used on the command line%s", (char)(ch), what) 1762 #define TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, "") 1763 #define MALLOC_TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, " with $ENV{PERL_MALLOC_OPT}") 1764 #define MALLOC_CHECK_TAINT2(argc,argv) MALLOC_CHECK_TAINT(argc,argv,NULL) 1765 1766 /* 1767 =for apidoc Am|void|memzero|void * d|Size_t l 1768 Set the C<l> bytes starting at C<*d> to all zeroes. 1769 1770 =cut 1771 */ 1772 #ifndef memzero 1773 # define memzero(d,l) memset(d,0,l) 1774 #endif 1775 1776 #ifdef I_NETINET_IN 1777 # include <netinet/in.h> 1778 #endif 1779 1780 #ifdef I_ARPA_INET 1781 # include <arpa/inet.h> 1782 #endif 1783 1784 #ifdef I_SYS_STAT 1785 # include <sys/stat.h> 1786 #endif 1787 1788 /* Microsoft VC's sys/stat.h defines all S_Ixxx macros except S_IFIFO. 1789 This definition should ideally go into win32/win32.h, but S_IFIFO is 1790 used later here in perl.h before win32/win32.h is being included. */ 1791 #if !defined(S_IFIFO) && defined(_S_IFIFO) 1792 # define S_IFIFO _S_IFIFO 1793 #endif 1794 1795 /* The stat macros for Unisoft System V/88 (and derivatives 1796 like UTekV) are broken, sometimes giving false positives. Undefine 1797 them here and let the code below set them to proper values. 1798 1799 The ghs macro stands for GreenHills Software C-1.8.5 which 1800 is the C compiler for sysV88 and the various derivatives. 1801 This header file bug is corrected in gcc-2.5.8 and later versions. 1802 --Kaveh Ghazi (ghazi@noc.rutgers.edu) 10/3/94. */ 1803 1804 #if defined(m88k) && defined(ghs) 1805 # undef S_ISDIR 1806 # undef S_ISCHR 1807 # undef S_ISBLK 1808 # undef S_ISREG 1809 # undef S_ISFIFO 1810 # undef S_ISLNK 1811 #endif 1812 1813 #include <time.h> 1814 1815 #ifdef I_SYS_TIME 1816 # ifdef I_SYS_TIME_KERNEL 1817 # define KERNEL 1818 # endif 1819 # include <sys/time.h> 1820 # ifdef I_SYS_TIME_KERNEL 1821 # undef KERNEL 1822 # endif 1823 #endif 1824 1825 #if defined(HAS_TIMES) && defined(I_SYS_TIMES) 1826 # include <sys/times.h> 1827 #endif 1828 1829 #include <errno.h> 1830 1831 #if defined(WIN32) && defined(PERL_IMPLICIT_SYS) 1832 # define WIN32SCK_IS_STDSCK /* don't pull in custom wsock layer */ 1833 #endif 1834 1835 #if defined(HAS_SOCKET) && !defined(WIN32) /* WIN32 handles sockets via win32.h */ 1836 # include <sys/socket.h> 1837 # if defined(USE_SOCKS) && defined(I_SOCKS) 1838 # if !defined(INCLUDE_PROTOTYPES) 1839 # define INCLUDE_PROTOTYPES /* for <socks.h> */ 1840 # define PERL_SOCKS_NEED_PROTOTYPES 1841 # endif 1842 # include <socks.h> 1843 # ifdef PERL_SOCKS_NEED_PROTOTYPES /* keep cpp space clean */ 1844 # undef INCLUDE_PROTOTYPES 1845 # undef PERL_SOCKS_NEED_PROTOTYPES 1846 # endif 1847 # endif 1848 # ifdef I_NETDB 1849 # include <netdb.h> 1850 # endif 1851 # ifndef ENOTSOCK 1852 # ifdef I_NET_ERRNO 1853 # include <net/errno.h> 1854 # endif 1855 # endif 1856 #endif 1857 1858 /* sockatmark() is so new (2001) that many places might have it hidden 1859 * behind some -D_BLAH_BLAH_SOURCE guard. The __THROW magic is required 1860 * e.g. in Gentoo, see http://bugs.gentoo.org/show_bug.cgi?id=12605 */ 1861 #if defined(HAS_SOCKATMARK) && !defined(HAS_SOCKATMARK_PROTO) 1862 # if defined(__THROW) && defined(__GLIBC__) 1863 int sockatmark(int) __THROW; 1864 # else 1865 int sockatmark(int); 1866 # endif 1867 #endif 1868 1869 #if defined(__osf__) && defined(__cplusplus) && !defined(_XOPEN_SOURCE_EXTENDED) /* Tru64 "cxx" (C++), see hints/dec_osf.sh for why the _XOPEN_SOURCE_EXTENDED cannot be defined. */ 1870 EXTERN_C int fchdir(int); 1871 EXTERN_C int flock(int, int); 1872 EXTERN_C int fseeko(FILE *, off_t, int); 1873 EXTERN_C off_t ftello(FILE *); 1874 #endif 1875 1876 #if defined(__SUNPRO_CC) /* SUNWspro CC (C++) */ 1877 EXTERN_C char *crypt(const char *, const char *); 1878 #endif 1879 1880 #if defined(__cplusplus) && defined(__CYGWIN__) 1881 EXTERN_C char *crypt(const char *, const char *); 1882 #endif 1883 1884 /* 1885 =for apidoc_section $errno 1886 1887 =for apidoc m|void|SETERRNO|int errcode|int vmserrcode 1888 1889 Set C<errno>, and on VMS set C<vaxc$errno>. 1890 1891 =for apidoc mn|void|dSAVEDERRNO 1892 1893 Declare variables needed to save C<errno> and any operating system 1894 specific error number. 1895 1896 =for apidoc mn|void|dSAVE_ERRNO 1897 1898 Declare variables needed to save C<errno> and any operating system 1899 specific error number, and save them for optional later restoration 1900 by C<RESTORE_ERRNO>. 1901 1902 =for apidoc mn|void|SAVE_ERRNO 1903 1904 Save C<errno> and any operating system specific error number for 1905 optional later restoration by C<RESTORE_ERRNO>. Requires 1906 C<dSAVEDERRNO> or C<dSAVE_ERRNO> in scope. 1907 1908 =for apidoc mn|void|RESTORE_ERRNO 1909 1910 Restore C<errno> and any operating system specific error number that 1911 was saved by C<dSAVE_ERRNO> or C<RESTORE_ERRNO>. 1912 1913 =cut 1914 */ 1915 1916 #ifdef SETERRNO 1917 # undef SETERRNO /* SOCKS might have defined this */ 1918 #endif 1919 1920 #if defined(VMS) || defined(WIN32) || defined(OS2) 1921 # define HAS_EXTENDED_OS_ERRNO 1922 # define get_extended_os_errno() Perl_get_extended_os_errno() 1923 # else 1924 # define get_extended_os_errno() errno 1925 # endif 1926 #ifdef VMS 1927 # define SETERRNO(errcode,vmserrcode) \ 1928 STMT_START { \ 1929 set_errno(errcode); \ 1930 set_vaxc_errno(vmserrcode); \ 1931 } STMT_END 1932 # define dSAVEDERRNO int saved_errno; unsigned saved_vms_errno 1933 # define dSAVE_ERRNO int saved_errno = errno; unsigned saved_vms_errno = vaxc$errno 1934 # define SAVE_ERRNO ( saved_errno = errno, saved_vms_errno = vaxc$errno ) 1935 # define RESTORE_ERRNO SETERRNO(saved_errno, saved_vms_errno) 1936 1937 # define LIB_INVARG LIB$_INVARG 1938 # define RMS_DIR RMS$_DIR 1939 # define RMS_FAC RMS$_FAC 1940 # define RMS_FEX RMS$_FEX 1941 # define RMS_FNF RMS$_FNF 1942 # define RMS_IFI RMS$_IFI 1943 # define RMS_ISI RMS$_ISI 1944 # define RMS_PRV RMS$_PRV 1945 # define SS_ACCVIO SS$_ACCVIO 1946 # define SS_DEVOFFLINE SS$_DEVOFFLINE 1947 # define SS_IVCHAN SS$_IVCHAN 1948 # define SS_NORMAL SS$_NORMAL 1949 # define SS_NOPRIV SS$_NOPRIV 1950 # define SS_BUFFEROVF SS$_BUFFEROVF 1951 #else 1952 # define LIB_INVARG 0 1953 # define RMS_DIR 0 1954 # define RMS_FAC 0 1955 # define RMS_FEX 0 1956 # define RMS_FNF 0 1957 # define RMS_IFI 0 1958 # define RMS_ISI 0 1959 # define RMS_PRV 0 1960 # define SS_ACCVIO 0 1961 # define SS_DEVOFFLINE 0 1962 # define SS_IVCHAN 0 1963 # define SS_NORMAL 0 1964 # define SS_NOPRIV 0 1965 # define SS_BUFFEROVF 0 1966 #endif 1967 1968 #ifdef WIN32 1969 # define dSAVEDERRNO int saved_errno; DWORD saved_win32_errno 1970 # define dSAVE_ERRNO int saved_errno = errno; DWORD saved_win32_errno = GetLastError() 1971 # define SAVE_ERRNO ( saved_errno = errno, saved_win32_errno = GetLastError() ) 1972 # define RESTORE_ERRNO ( errno = saved_errno, SetLastError(saved_win32_errno) ) 1973 #endif 1974 1975 #ifdef OS2 1976 # define dSAVEDERRNO int saved_errno; unsigned long saved_os2_errno 1977 # define dSAVE_ERRNO int saved_errno = errno; unsigned long saved_os2_errno = Perl_rc 1978 # define SAVE_ERRNO ( saved_errno = errno, saved_os2_errno = Perl_rc ) 1979 # define RESTORE_ERRNO ( errno = saved_errno, Perl_rc = saved_os2_errno ) 1980 #endif 1981 1982 #ifndef SETERRNO 1983 # define SETERRNO(errcode,vmserrcode) (errno = (errcode)) 1984 #endif 1985 1986 #ifndef dSAVEDERRNO 1987 # define dSAVEDERRNO int saved_errno 1988 # define dSAVE_ERRNO int saved_errno = errno 1989 # define SAVE_ERRNO (saved_errno = errno) 1990 # define RESTORE_ERRNO (errno = saved_errno) 1991 #endif 1992 1993 /* 1994 =for apidoc_section $warning 1995 1996 =for apidoc Amn|SV *|ERRSV 1997 1998 Returns the SV for C<$@>, creating it if needed. 1999 2000 =for apidoc Am|void|CLEAR_ERRSV 2001 2002 Clear the contents of C<$@>, setting it to the empty string. 2003 2004 This replaces any read-only SV with a fresh SV and removes any magic. 2005 2006 =for apidoc Am|void|SANE_ERRSV 2007 2008 Clean up ERRSV so we can safely set it. 2009 2010 This replaces any read-only SV with a fresh writable copy and removes 2011 any magic. 2012 2013 =cut 2014 */ 2015 2016 #define ERRSV GvSVn(PL_errgv) 2017 2018 /* contains inlined gv_add_by_type */ 2019 #define CLEAR_ERRSV() STMT_START { \ 2020 SV ** const svp = &GvSV(PL_errgv); \ 2021 if (!*svp) { \ 2022 *svp = newSVpvs(""); \ 2023 } else if (SvREADONLY(*svp)) { \ 2024 SvREFCNT_dec_NN(*svp); \ 2025 *svp = newSVpvs(""); \ 2026 } else { \ 2027 SV *const errsv = *svp; \ 2028 SvPVCLEAR(errsv); \ 2029 SvPOK_only(errsv); \ 2030 if (SvMAGICAL(errsv)) { \ 2031 mg_free(errsv); \ 2032 } \ 2033 } \ 2034 } STMT_END 2035 2036 /* contains inlined gv_add_by_type */ 2037 #define SANE_ERRSV() STMT_START { \ 2038 SV ** const svp = &GvSV(PL_errgv); \ 2039 if (!*svp) { \ 2040 *svp = newSVpvs(""); \ 2041 } else if (SvREADONLY(*svp)) { \ 2042 SV *dupsv = newSVsv(*svp); \ 2043 SvREFCNT_dec_NN(*svp); \ 2044 *svp = dupsv; \ 2045 } else { \ 2046 SV *const errsv = *svp; \ 2047 if (SvMAGICAL(errsv)) { \ 2048 mg_free(errsv); \ 2049 } \ 2050 } \ 2051 } STMT_END 2052 2053 2054 #ifdef PERL_CORE 2055 # define DEFSV (0 + GvSVn(PL_defgv)) 2056 # define DEFSV_set(sv) \ 2057 (SvREFCNT_dec(GvSV(PL_defgv)), GvSV(PL_defgv) = SvREFCNT_inc(sv)) 2058 # define SAVE_DEFSV \ 2059 ( \ 2060 save_gp(PL_defgv, 0), \ 2061 GvINTRO_off(PL_defgv), \ 2062 SAVEGENERICSV(GvSV(PL_defgv)), \ 2063 GvSV(PL_defgv) = NULL \ 2064 ) 2065 #else 2066 # define DEFSV GvSVn(PL_defgv) 2067 # define DEFSV_set(sv) (GvSV(PL_defgv) = (sv)) 2068 # define SAVE_DEFSV SAVESPTR(GvSV(PL_defgv)) 2069 #endif 2070 2071 /* 2072 =for apidoc_section $SV 2073 =for apidoc Amn|SV *|DEFSV 2074 Returns the SV associated with C<$_> 2075 2076 =for apidoc Am|void|DEFSV_set|SV * sv 2077 Associate C<sv> with C<$_> 2078 2079 =for apidoc Amn|void|SAVE_DEFSV 2080 Localize C<$_>. See L<perlguts/Localizing changes>. 2081 2082 =cut 2083 */ 2084 2085 #ifndef errno 2086 extern int errno; /* ANSI allows errno to be an lvalue expr. 2087 * For example in multithreaded environments 2088 * something like this might happen: 2089 * extern int *_errno(void); 2090 * #define errno (*_errno()) */ 2091 #endif 2092 2093 #define UNKNOWN_ERRNO_MSG "(unknown)" 2094 2095 #ifdef VMS 2096 #define Strerror(e) strerror((e), vaxc$errno) 2097 #else 2098 #define Strerror(e) strerror(e) 2099 #endif 2100 2101 #ifdef I_SYS_IOCTL 2102 # ifndef _IOCTL_ 2103 # include <sys/ioctl.h> 2104 # endif 2105 #endif 2106 2107 #if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000) 2108 # ifdef HAS_SOCKETPAIR 2109 # undef HAS_SOCKETPAIR 2110 # endif 2111 # ifdef I_NDBM 2112 # undef I_NDBM 2113 # endif 2114 #endif 2115 2116 #ifndef HAS_SOCKETPAIR 2117 # ifdef HAS_SOCKET 2118 # define socketpair Perl_my_socketpair 2119 # endif 2120 #endif 2121 2122 #if INTSIZE == 2 2123 # define htoni htons 2124 # define ntohi ntohs 2125 #else 2126 # define htoni htonl 2127 # define ntohi ntohl 2128 #endif 2129 2130 /* Configure already sets Direntry_t */ 2131 #if defined(I_DIRENT) 2132 # include <dirent.h> 2133 #elif defined(I_SYS_NDIR) 2134 # include <sys/ndir.h> 2135 #elif defined(I_SYS_DIR) 2136 # include <sys/dir.h> 2137 #endif 2138 2139 /* 2140 * The following gobbledygook brought to you on behalf of __STDC__. 2141 * (I could just use #ifndef __STDC__, but this is more bulletproof 2142 * in the face of half-implementations.) 2143 */ 2144 2145 #if defined(I_SYSMODE) 2146 #include <sys/mode.h> 2147 #endif 2148 2149 #ifndef S_IFMT 2150 # ifdef _S_IFMT 2151 # define S_IFMT _S_IFMT 2152 # else 2153 # define S_IFMT 0170000 2154 # endif 2155 #endif 2156 2157 #ifndef S_ISDIR 2158 # define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR) 2159 #endif 2160 2161 #ifndef S_ISCHR 2162 # define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR) 2163 #endif 2164 2165 #ifndef S_ISBLK 2166 # ifdef S_IFBLK 2167 # define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK) 2168 # else 2169 # define S_ISBLK(m) (0) 2170 # endif 2171 #endif 2172 2173 #ifndef S_ISREG 2174 # define S_ISREG(m) ((m & S_IFMT) == S_IFREG) 2175 #endif 2176 2177 #ifndef S_ISFIFO 2178 # ifdef S_IFIFO 2179 # define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO) 2180 # else 2181 # define S_ISFIFO(m) (0) 2182 # endif 2183 #endif 2184 2185 #ifndef S_ISLNK 2186 # ifdef _S_ISLNK 2187 # define S_ISLNK(m) _S_ISLNK(m) 2188 # elif defined(_S_IFLNK) 2189 # define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK) 2190 # elif defined(S_IFLNK) 2191 # define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK) 2192 # else 2193 # define S_ISLNK(m) (0) 2194 # endif 2195 #endif 2196 2197 #ifndef S_ISSOCK 2198 # ifdef _S_ISSOCK 2199 # define S_ISSOCK(m) _S_ISSOCK(m) 2200 # elif defined(_S_IFSOCK) 2201 # define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK) 2202 # elif defined(S_IFSOCK) 2203 # define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK) 2204 # else 2205 # define S_ISSOCK(m) (0) 2206 # endif 2207 #endif 2208 2209 #ifndef S_IRUSR 2210 # ifdef S_IREAD 2211 # define S_IRUSR S_IREAD 2212 # define S_IWUSR S_IWRITE 2213 # define S_IXUSR S_IEXEC 2214 # else 2215 # define S_IRUSR 0400 2216 # define S_IWUSR 0200 2217 # define S_IXUSR 0100 2218 # endif 2219 #endif 2220 2221 #ifndef S_IRGRP 2222 # ifdef S_IRUSR 2223 # define S_IRGRP (S_IRUSR>>3) 2224 # define S_IWGRP (S_IWUSR>>3) 2225 # define S_IXGRP (S_IXUSR>>3) 2226 # else 2227 # define S_IRGRP 0040 2228 # define S_IWGRP 0020 2229 # define S_IXGRP 0010 2230 # endif 2231 #endif 2232 2233 #ifndef S_IROTH 2234 # ifdef S_IRUSR 2235 # define S_IROTH (S_IRUSR>>6) 2236 # define S_IWOTH (S_IWUSR>>6) 2237 # define S_IXOTH (S_IXUSR>>6) 2238 # else 2239 # define S_IROTH 0040 2240 # define S_IWOTH 0020 2241 # define S_IXOTH 0010 2242 # endif 2243 #endif 2244 2245 #ifndef S_ISUID 2246 # define S_ISUID 04000 2247 #endif 2248 2249 #ifndef S_ISGID 2250 # define S_ISGID 02000 2251 #endif 2252 2253 #ifndef S_IRWXU 2254 # define S_IRWXU (S_IRUSR|S_IWUSR|S_IXUSR) 2255 #endif 2256 2257 #ifndef S_IRWXG 2258 # define S_IRWXG (S_IRGRP|S_IWGRP|S_IXGRP) 2259 #endif 2260 2261 #ifndef S_IRWXO 2262 # define S_IRWXO (S_IROTH|S_IWOTH|S_IXOTH) 2263 #endif 2264 2265 /* Haiku R1 seems to define S_IREAD and S_IWRITE in <posix/fcntl.h> 2266 * which would get included through <sys/file.h >, but that is 3000 2267 * lines in the future. --jhi */ 2268 2269 #if !defined(S_IREAD) && !defined(__HAIKU__) 2270 # define S_IREAD S_IRUSR 2271 #endif 2272 2273 #if !defined(S_IWRITE) && !defined(__HAIKU__) 2274 # define S_IWRITE S_IWUSR 2275 #endif 2276 2277 #ifndef S_IEXEC 2278 # define S_IEXEC S_IXUSR 2279 #endif 2280 2281 #if defined(cray) || defined(gould) || defined(i860) || defined(pyr) 2282 # define SLOPPYDIVIDE 2283 #endif 2284 2285 #ifdef UV 2286 #undef UV 2287 #endif 2288 2289 /* This used to be conditionally defined based on whether we had a sprintf() 2290 * that correctly returns the string length (as required by C89), but we no 2291 * longer need that. XS modules can (and do) use this name, so it must remain 2292 * a part of the API that's visible to modules. 2293 2294 =for apidoc_section $string 2295 =for apidoc ATmD|int|my_sprintf|NN char *buffer|NN const char *pat|... 2296 2297 Do NOT use this due to the possibility of overflowing C<buffer>. Instead use 2298 my_snprintf() 2299 2300 =cut 2301 */ 2302 #define my_sprintf sprintf 2303 2304 /* 2305 * If we have v?snprintf() and the C99 variadic macros, we can just 2306 * use just the v?snprintf(). It is nice to try to trap the buffer 2307 * overflow, however, so if we are DEBUGGING, and we cannot use the 2308 * gcc statement expressions, then use the function wrappers which try 2309 * to trap the overflow. If we can use the gcc statement expressions, 2310 * we can try that even with the version that uses the C99 variadic 2311 * macros. 2312 */ 2313 2314 /* Note that we do not check against snprintf()/vsnprintf() returning 2315 * negative values because that is non-standard behaviour and we use 2316 * snprintf/vsnprintf only iff HAS_VSNPRINTF has been defined, and 2317 * that should be true only if the snprintf()/vsnprintf() are true 2318 * to the standard. */ 2319 2320 #define PERL_SNPRINTF_CHECK(len, max, api) STMT_START { if ((max) > 0 && (Size_t)len > (max)) Perl_croak_nocontext("panic: %s buffer overflow", STRINGIFY(api)); } STMT_END 2321 2322 #if defined(USE_LOCALE_NUMERIC) || defined(USE_QUADMATH) 2323 # define my_snprintf Perl_my_snprintf 2324 # define PERL_MY_SNPRINTF_GUARDED 2325 #elif defined(HAS_SNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC) 2326 # ifdef PERL_USE_GCC_BRACE_GROUPS 2327 # define my_snprintf(buffer, max, ...) ({ int len = snprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, snprintf); len; }) 2328 # define PERL_MY_SNPRINTF_GUARDED 2329 # else 2330 # define my_snprintf(buffer, max, ...) snprintf(buffer, max, __VA_ARGS__) 2331 # endif 2332 #else 2333 # define my_snprintf Perl_my_snprintf 2334 # define PERL_MY_SNPRINTF_GUARDED 2335 #endif 2336 2337 /* There is no quadmath_vsnprintf, and therefore my_vsnprintf() 2338 * dies if called under USE_QUADMATH. */ 2339 #if ! defined(USE_LOCALE_NUMERIC) \ 2340 && defined(HAS_VSNPRINTF) \ 2341 && defined(HAS_C99_VARIADIC_MACROS) \ 2342 && ! (defined(DEBUGGING) && ! defined(PERL_USE_GCC_BRACE_GROUPS)) \ 2343 && ! defined(PERL_GCC_PEDANTIC) 2344 # ifdef PERL_USE_GCC_BRACE_GROUPS 2345 # define my_vsnprintf(buffer, max, ...) \ 2346 ({ int len = vsnprintf(buffer, max, __VA_ARGS__); \ 2347 PERL_SNPRINTF_CHECK(len, max, vsnprintf); \ 2348 len; }) 2349 # define PERL_MY_VSNPRINTF_GUARDED 2350 # else 2351 # define my_vsnprintf(buffer, max, ...) vsnprintf(buffer, max, __VA_ARGS__) 2352 # endif 2353 #else 2354 # define my_vsnprintf Perl_my_vsnprintf 2355 # define PERL_MY_VSNPRINTF_GUARDED 2356 #endif 2357 2358 /* You will definitely need to use the PERL_MY_SNPRINTF_POST_GUARD() 2359 * or PERL_MY_VSNPRINTF_POST_GUARD() if you otherwise decide to ignore 2360 * the result of my_snprintf() or my_vsnprintf(). (No, you should not 2361 * completely ignore it: otherwise you cannot know whether your output 2362 * was too long.) 2363 * 2364 * int len = my_sprintf(buf, max, ...); 2365 * PERL_MY_SNPRINTF_POST_GUARD(len, max); 2366 * 2367 * The trick is that in certain platforms [a] the my_sprintf() already 2368 * contains the sanity check, while in certain platforms [b] it needs 2369 * to be done as a separate step. The POST_GUARD is that step-- in [a] 2370 * platforms the POST_GUARD actually does nothing since the check has 2371 * already been done. Watch out for the max being the same in both calls. 2372 * 2373 * If you actually use the snprintf/vsnprintf return value already, 2374 * you assumedly are checking its validity somehow. But you can 2375 * insert the POST_GUARD() also in that case. */ 2376 2377 #ifndef PERL_MY_SNPRINTF_GUARDED 2378 # define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, snprintf) 2379 #else 2380 # define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len) 2381 #endif 2382 2383 #ifndef PERL_MY_VSNPRINTF_GUARDED 2384 # define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, vsnprintf) 2385 #else 2386 # define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len) 2387 #endif 2388 2389 #ifdef HAS_STRLCAT 2390 # define my_strlcat strlcat 2391 #endif 2392 2393 #if defined(PERL_CORE) || defined(PERL_EXT) 2394 # ifdef HAS_MEMRCHR 2395 # define my_memrchr memrchr 2396 # else 2397 # define my_memrchr S_my_memrchr 2398 # endif 2399 #endif 2400 2401 #ifdef HAS_STRLCPY 2402 # define my_strlcpy strlcpy 2403 #endif 2404 2405 #ifdef HAS_STRNLEN 2406 # define my_strnlen strnlen 2407 #endif 2408 2409 /* 2410 The IV type is supposed to be long enough to hold any integral 2411 value or a pointer. 2412 --Andy Dougherty August 1996 2413 */ 2414 2415 typedef IVTYPE IV; 2416 typedef UVTYPE UV; 2417 2418 #if defined(USE_64_BIT_INT) && defined(HAS_QUAD) 2419 # if QUADKIND == QUAD_IS_INT64_T && defined(INT64_MAX) 2420 # define IV_MAX ((IV)INT64_MAX) 2421 # define IV_MIN ((IV)INT64_MIN) 2422 # define UV_MAX ((UV)UINT64_MAX) 2423 # ifndef UINT64_MIN 2424 # define UINT64_MIN 0 2425 # endif 2426 # define UV_MIN ((UV)UINT64_MIN) 2427 # else 2428 # define IV_MAX PERL_QUAD_MAX 2429 # define IV_MIN PERL_QUAD_MIN 2430 # define UV_MAX PERL_UQUAD_MAX 2431 # define UV_MIN PERL_UQUAD_MIN 2432 # endif 2433 # define IV_IS_QUAD 2434 # define UV_IS_QUAD 2435 #else 2436 # if defined(INT32_MAX) && IVSIZE == 4 2437 # define IV_MAX ((IV)INT32_MAX) 2438 # define IV_MIN ((IV)INT32_MIN) 2439 # ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */ 2440 # define UV_MAX ((UV)UINT32_MAX) 2441 # else 2442 # define UV_MAX ((UV)4294967295U) 2443 # endif 2444 # ifndef UINT32_MIN 2445 # define UINT32_MIN 0 2446 # endif 2447 # define UV_MIN ((UV)UINT32_MIN) 2448 # else 2449 # define IV_MAX PERL_LONG_MAX 2450 # define IV_MIN PERL_LONG_MIN 2451 # define UV_MAX PERL_ULONG_MAX 2452 # define UV_MIN PERL_ULONG_MIN 2453 # endif 2454 # if IVSIZE == 8 2455 # define IV_IS_QUAD 2456 # define UV_IS_QUAD 2457 # ifndef HAS_QUAD 2458 # define HAS_QUAD 2459 # endif 2460 # else 2461 # undef IV_IS_QUAD 2462 # undef UV_IS_QUAD 2463 #if !defined(PERL_CORE) 2464 /* We think that removing this decade-old undef this will cause too much 2465 breakage on CPAN for too little gain. (See RT #119753) 2466 However, we do need HAS_QUAD in the core for use by the drand48 code. */ 2467 # undef HAS_QUAD 2468 #endif 2469 # endif 2470 #endif 2471 2472 #define Size_t_MAX (~(Size_t)0) 2473 #define SSize_t_MAX (SSize_t)(~(Size_t)0 >> 1) 2474 2475 #define IV_DIG (BIT_DIGITS(IVSIZE * 8)) 2476 #define UV_DIG (BIT_DIGITS(UVSIZE * 8)) 2477 2478 #ifndef NO_PERL_PRESERVE_IVUV 2479 #define PERL_PRESERVE_IVUV /* We like our integers to stay integers. */ 2480 #endif 2481 2482 /* 2483 * The macros INT2PTR and NUM2PTR are (despite their names) 2484 * bi-directional: they will convert int/float to or from pointers. 2485 * However the conversion to int/float are named explicitly: 2486 * PTR2IV, PTR2UV, PTR2NV. 2487 * 2488 * For int conversions we do not need two casts if pointers are 2489 * the same size as IV and UV. Otherwise we need an explicit 2490 * cast (PTRV) to avoid compiler warnings. 2491 * 2492 * These are mentioned in perlguts 2493 */ 2494 #if (IVSIZE == PTRSIZE) && (UVSIZE == PTRSIZE) 2495 # define PTRV UV 2496 # define INT2PTR(any,d) (any)(d) 2497 #elif PTRSIZE == LONGSIZE 2498 # define PTRV unsigned long 2499 # define PTR2ul(p) (unsigned long)(p) 2500 #else 2501 # define PTRV unsigned 2502 #endif 2503 2504 #ifndef INT2PTR 2505 # define INT2PTR(any,d) (any)(PTRV)(d) 2506 #endif 2507 2508 #ifndef PTR2ul 2509 # define PTR2ul(p) INT2PTR(unsigned long,p) 2510 #endif 2511 2512 /* 2513 =for apidoc_section $casting 2514 =for apidoc Cyh|type|NUM2PTR|type|int value 2515 You probably want to be using L<C</INT2PTR>> instead. 2516 2517 =cut 2518 */ 2519 2520 #define NUM2PTR(any,d) (any)(PTRV)(d) 2521 #define PTR2IV(p) INT2PTR(IV,p) 2522 #define PTR2UV(p) INT2PTR(UV,p) 2523 #define PTR2NV(p) NUM2PTR(NV,p) 2524 #define PTR2nat(p) (PTRV)(p) /* pointer to integer of PTRSIZE */ 2525 2526 /* According to strict ANSI C89 one cannot freely cast between 2527 * data pointers and function (code) pointers. There are at least 2528 * two ways around this. One (used below) is to do two casts, 2529 * first the other pointer to an (unsigned) integer, and then 2530 * the integer to the other pointer. The other way would be 2531 * to use unions to "overlay" the pointers. For an example of 2532 * the latter technique, see union dirpu in struct xpvio in sv.h. 2533 * The only feasible use is probably temporarily storing 2534 * function pointers in a data pointer (such as a void pointer). */ 2535 2536 #define DPTR2FPTR(t,p) ((t)PTR2nat(p)) /* data pointer to function pointer */ 2537 #define FPTR2DPTR(t,p) ((t)PTR2nat(p)) /* function pointer to data pointer */ 2538 2539 #ifdef USE_LONG_DOUBLE 2540 # if LONG_DOUBLESIZE == DOUBLESIZE 2541 # define LONG_DOUBLE_EQUALS_DOUBLE 2542 # undef USE_LONG_DOUBLE /* Ouch! */ 2543 # endif 2544 #endif 2545 2546 /* The following is all to get LDBL_DIG, in order to pick a nice 2547 default value for printing floating point numbers in Gconvert. 2548 (see config.h) 2549 */ 2550 #ifndef HAS_LDBL_DIG 2551 # if LONG_DOUBLESIZE == 10 2552 # define LDBL_DIG 18 /* assume IEEE */ 2553 # elif LONG_DOUBLESIZE == 12 2554 # define LDBL_DIG 18 /* gcc? */ 2555 # elif LONG_DOUBLESIZE == 16 2556 # define LDBL_DIG 33 /* assume IEEE */ 2557 # elif LONG_DOUBLESIZE == DOUBLESIZE 2558 # define LDBL_DIG DBL_DIG /* bummer */ 2559 # endif 2560 #endif 2561 2562 /* On MS Windows,with 64-bit mingw-w64 compilers, we 2563 need to attend to a __float128 alignment issue if 2564 USE_QUADMATH is defined. Otherwise we simply: 2565 typedef NVTYPE NV 2566 32-bit mingw.org compilers might also require 2567 aligned(32) - at least that's what I found with my 2568 Math::Foat128 module. But this is as yet untested 2569 here, so no allowance is being made for mingw.org 2570 compilers at this stage. -- sisyphus January 2021 2571 */ 2572 #if (defined(USE_LONG_DOUBLE) || defined(USE_QUADMATH)) && defined(__MINGW64__) 2573 /* 64-bit build, mingw-w64 compiler only */ 2574 typedef NVTYPE NV __attribute__ ((aligned(8))); 2575 #else 2576 typedef NVTYPE NV; 2577 #endif 2578 2579 #ifdef I_IEEEFP 2580 # include <ieeefp.h> 2581 #endif 2582 2583 #if defined(__DECC) && defined(__osf__) 2584 /* Also Tru64 cc has broken NaN comparisons. */ 2585 # define NAN_COMPARE_BROKEN 2586 #endif 2587 #if defined(__sgi) 2588 # define NAN_COMPARE_BROKEN 2589 #endif 2590 2591 #ifdef USE_LONG_DOUBLE 2592 # ifdef I_SUNMATH 2593 # include <sunmath.h> 2594 # endif 2595 # if defined(LDBL_DIG) 2596 # define NV_DIG LDBL_DIG 2597 # ifdef LDBL_MANT_DIG 2598 # define NV_MANT_DIG LDBL_MANT_DIG 2599 # endif 2600 # ifdef LDBL_MIN 2601 # define NV_MIN LDBL_MIN 2602 # endif 2603 # ifdef LDBL_MAX 2604 # define NV_MAX LDBL_MAX 2605 # endif 2606 # ifdef LDBL_MIN_EXP 2607 # define NV_MIN_EXP LDBL_MIN_EXP 2608 # endif 2609 # ifdef LDBL_MAX_EXP 2610 # define NV_MAX_EXP LDBL_MAX_EXP 2611 # endif 2612 # ifdef LDBL_MIN_10_EXP 2613 # define NV_MIN_10_EXP LDBL_MIN_10_EXP 2614 # endif 2615 # ifdef LDBL_MAX_10_EXP 2616 # define NV_MAX_10_EXP LDBL_MAX_10_EXP 2617 # endif 2618 # ifdef LDBL_EPSILON 2619 # define NV_EPSILON LDBL_EPSILON 2620 # endif 2621 # ifdef LDBL_MAX 2622 # define NV_MAX LDBL_MAX 2623 /* Having LDBL_MAX doesn't necessarily mean that we have LDBL_MIN... -Allen */ 2624 # elif defined(HUGE_VALL) 2625 # define NV_MAX HUGE_VALL 2626 # endif 2627 # endif 2628 # if defined(HAS_SQRTL) 2629 # define Perl_acos acosl 2630 # define Perl_asin asinl 2631 # define Perl_atan atanl 2632 # define Perl_atan2 atan2l 2633 # define Perl_ceil ceill 2634 # define Perl_cos cosl 2635 # define Perl_cosh coshl 2636 # define Perl_exp expl 2637 # define Perl_fabs fabsl 2638 # define Perl_floor floorl 2639 # define Perl_fmod fmodl 2640 # define Perl_log logl 2641 # define Perl_log10 log10l 2642 # define Perl_pow powl 2643 # define Perl_sin sinl 2644 # define Perl_sinh sinhl 2645 # define Perl_sqrt sqrtl 2646 # define Perl_tan tanl 2647 # define Perl_tanh tanhl 2648 # endif 2649 /* e.g. libsunmath doesn't have modfl and frexpl as of mid-March 2000 */ 2650 # ifndef Perl_modf 2651 # ifdef HAS_MODFL 2652 # define Perl_modf(x,y) modfl(x,y) 2653 /* eg glibc 2.2 series seems to provide modfl on ppc and arm, but has no 2654 prototype in <math.h> */ 2655 # ifndef HAS_MODFL_PROTO 2656 EXTERN_C long double modfl(long double, long double *); 2657 # endif 2658 # elif (defined(HAS_TRUNCL) || defined(HAS_AINTL)) && defined(HAS_COPYSIGNL) 2659 extern long double Perl_my_modfl(long double x, long double *ip); 2660 # define Perl_modf(x,y) Perl_my_modfl(x,y) 2661 # endif 2662 # endif 2663 # ifndef Perl_frexp 2664 # ifdef HAS_FREXPL 2665 # define Perl_frexp(x,y) frexpl(x,y) 2666 # elif defined(HAS_ILOGBL) && defined(HAS_SCALBNL) 2667 extern long double Perl_my_frexpl(long double x, int *e); 2668 # define Perl_frexp(x,y) Perl_my_frexpl(x,y) 2669 # endif 2670 # endif 2671 # ifndef Perl_ldexp 2672 # ifdef HAS_LDEXPL 2673 # define Perl_ldexp(x, y) ldexpl(x,y) 2674 # elif defined(HAS_SCALBNL) && FLT_RADIX == 2 2675 # define Perl_ldexp(x,y) scalbnl(x,y) 2676 # endif 2677 # endif 2678 # ifndef Perl_isnan 2679 # if defined(HAS_ISNANL) && !(defined(isnan) && defined(HAS_C99)) 2680 # define Perl_isnan(x) isnanl(x) 2681 # elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */ 2682 # define Perl_isnan(x) isnan(x) 2683 # endif 2684 # endif 2685 # ifndef Perl_isinf 2686 # if defined(HAS_ISINFL) && !(defined(isinf) && defined(HAS_C99)) 2687 # define Perl_isinf(x) isinfl(x) 2688 # elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */ 2689 # define Perl_isinf(x) isinf(x) 2690 # elif defined(LDBL_MAX) && !defined(NAN_COMPARE_BROKEN) 2691 # define Perl_isinf(x) ((x) > LDBL_MAX || (x) < -LDBL_MAX) 2692 # endif 2693 # endif 2694 # ifndef Perl_isfinite 2695 # define Perl_isfinite(x) Perl_isfinitel(x) 2696 # endif 2697 #elif defined(USE_QUADMATH) && defined(I_QUADMATH) 2698 # include <quadmath.h> 2699 # define NV_DIG FLT128_DIG 2700 # define NV_MANT_DIG FLT128_MANT_DIG 2701 # define NV_MIN FLT128_MIN 2702 # define NV_MAX FLT128_MAX 2703 # define NV_MIN_EXP FLT128_MIN_EXP 2704 # define NV_MAX_EXP FLT128_MAX_EXP 2705 # define NV_EPSILON FLT128_EPSILON 2706 # define NV_MIN_10_EXP FLT128_MIN_10_EXP 2707 # define NV_MAX_10_EXP FLT128_MAX_10_EXP 2708 # define Perl_acos acosq 2709 # define Perl_asin asinq 2710 # define Perl_atan atanq 2711 # define Perl_atan2 atan2q 2712 # define Perl_ceil ceilq 2713 # define Perl_cos cosq 2714 # define Perl_cosh coshq 2715 # define Perl_exp expq 2716 # define Perl_fabs fabsq 2717 # define Perl_floor floorq 2718 # define Perl_fmod fmodq 2719 # define Perl_log logq 2720 # define Perl_log10 log10q 2721 # define Perl_signbit signbitq 2722 # define Perl_pow powq 2723 # define Perl_sin sinq 2724 # define Perl_sinh sinhq 2725 # define Perl_sqrt sqrtq 2726 # define Perl_tan tanq 2727 # define Perl_tanh tanhq 2728 # define Perl_modf(x,y) modfq(x,y) 2729 # define Perl_frexp(x,y) frexpq(x,y) 2730 # define Perl_ldexp(x, y) ldexpq(x,y) 2731 # define Perl_isinf(x) isinfq(x) 2732 # define Perl_isnan(x) isnanq(x) 2733 # define Perl_isfinite(x) (!(isnanq(x) || isinfq(x))) 2734 # define Perl_fp_class(x) ((x) == 0.0Q ? 0 : isinfq(x) ? 3 : isnanq(x) ? 4 : PERL_ABS(x) < FLT128_MIN ? 2 : 1) 2735 # define Perl_fp_class_inf(x) (Perl_fp_class(x) == 3) 2736 # define Perl_fp_class_nan(x) (Perl_fp_class(x) == 4) 2737 # define Perl_fp_class_norm(x) (Perl_fp_class(x) == 1) 2738 # define Perl_fp_class_denorm(x) (Perl_fp_class(x) == 2) 2739 # define Perl_fp_class_zero(x) (Perl_fp_class(x) == 0) 2740 #else 2741 # define NV_DIG DBL_DIG 2742 # define NV_MANT_DIG DBL_MANT_DIG 2743 # define NV_MIN DBL_MIN 2744 # define NV_MAX DBL_MAX 2745 # define NV_MIN_EXP DBL_MIN_EXP 2746 # define NV_MAX_EXP DBL_MAX_EXP 2747 # define NV_MIN_10_EXP DBL_MIN_10_EXP 2748 # define NV_MAX_10_EXP DBL_MAX_10_EXP 2749 # define NV_EPSILON DBL_EPSILON 2750 # define NV_MAX DBL_MAX 2751 # define NV_MIN DBL_MIN 2752 2753 /* These math interfaces are C89. */ 2754 # define Perl_acos acos 2755 # define Perl_asin asin 2756 # define Perl_atan atan 2757 # define Perl_atan2 atan2 2758 # define Perl_ceil ceil 2759 # define Perl_cos cos 2760 # define Perl_cosh cosh 2761 # define Perl_exp exp 2762 # define Perl_fabs fabs 2763 # define Perl_floor floor 2764 # define Perl_fmod fmod 2765 # define Perl_log log 2766 # define Perl_log10 log10 2767 # define Perl_pow pow 2768 # define Perl_sin sin 2769 # define Perl_sinh sinh 2770 # define Perl_sqrt sqrt 2771 # define Perl_tan tan 2772 # define Perl_tanh tanh 2773 2774 # define Perl_modf(x,y) modf(x,y) 2775 # define Perl_frexp(x,y) frexp(x,y) 2776 # define Perl_ldexp(x,y) ldexp(x,y) 2777 2778 # ifndef Perl_isnan 2779 # ifdef HAS_ISNAN 2780 # define Perl_isnan(x) isnan(x) 2781 # endif 2782 # endif 2783 # ifndef Perl_isinf 2784 # if defined(HAS_ISINF) 2785 # define Perl_isinf(x) isinf(x) 2786 # elif defined(DBL_MAX) && !defined(NAN_COMPARE_BROKEN) 2787 # define Perl_isinf(x) ((x) > DBL_MAX || (x) < -DBL_MAX) 2788 # endif 2789 # endif 2790 # ifndef Perl_isfinite 2791 # ifdef HAS_ISFINITE 2792 # define Perl_isfinite(x) isfinite(x) 2793 # elif defined(HAS_FINITE) 2794 # define Perl_isfinite(x) finite(x) 2795 # endif 2796 # endif 2797 #endif 2798 2799 /* fpclassify(): C99. It is supposed to be a macro that switches on 2800 * the sizeof() of its argument, so there's no need for e.g. fpclassifyl().*/ 2801 #if !defined(Perl_fp_class) && defined(HAS_FPCLASSIFY) 2802 # include <math.h> 2803 # if defined(FP_INFINITE) && defined(FP_NAN) 2804 # define Perl_fp_class(x) fpclassify(x) 2805 # define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE) 2806 # define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN) 2807 # define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL) 2808 # define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL) 2809 # define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO) 2810 # elif defined(FP_PLUS_INF) && defined(FP_QNAN) 2811 /* Some versions of HP-UX (10.20) have (only) fpclassify() but which is 2812 * actually not the C99 fpclassify, with its own set of return defines. */ 2813 # define Perl_fp_class(x) fpclassify(x) 2814 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF) 2815 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF) 2816 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN) 2817 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN) 2818 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM) 2819 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM) 2820 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM) 2821 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM) 2822 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO) 2823 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO) 2824 # else 2825 # undef Perl_fp_class /* Unknown set of defines */ 2826 # endif 2827 #endif 2828 2829 /* fp_classify(): Legacy: VMS, maybe Unicos? The values, however, 2830 * are identical to the C99 fpclassify(). */ 2831 #if !defined(Perl_fp_class) && defined(HAS_FP_CLASSIFY) 2832 # include <math.h> 2833 # ifdef __VMS 2834 /* FP_INFINITE and others are here rather than in math.h as C99 stipulates */ 2835 # include <fp.h> 2836 /* oh, and the isnormal macro has a typo in it! */ 2837 # undef isnormal 2838 # define isnormal(x) Perl_fp_class_norm(x) 2839 # endif 2840 # if defined(FP_INFINITE) && defined(FP_NAN) 2841 # define Perl_fp_class(x) fp_classify(x) 2842 # define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE) 2843 # define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN) 2844 # define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL) 2845 # define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL) 2846 # define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO) 2847 # else 2848 # undef Perl_fp_class /* Unknown set of defines */ 2849 # endif 2850 #endif 2851 2852 /* Feel free to check with me for the SGI manpages, SGI testing, 2853 * etcetera, if you want to try getting this to work with IRIX. 2854 * 2855 * - Allen <allens@cpan.org> */ 2856 2857 /* fpclass(): SysV, at least Solaris and some versions of IRIX. */ 2858 #if !defined(Perl_fp_class) && (defined(HAS_FPCLASS)||defined(HAS_FPCLASSL)) 2859 /* Solaris and IRIX have fpclass/fpclassl, but they are using 2860 * an enum typedef, not cpp symbols, and Configure doesn't detect that. 2861 * Define some symbols also as cpp symbols so we can detect them. */ 2862 # if defined(__sun) || defined(__sgi) /* XXX Configure test instead */ 2863 # define FP_PINF FP_PINF 2864 # define FP_QNAN FP_QNAN 2865 # endif 2866 # include <math.h> 2867 # ifdef I_IEEEFP 2868 # include <ieeefp.h> 2869 # endif 2870 # ifdef I_FP 2871 # include <fp.h> 2872 # endif 2873 # if defined(USE_LONG_DOUBLE) && defined(HAS_FPCLASSL) 2874 # define Perl_fp_class(x) fpclassl(x) 2875 # else 2876 # define Perl_fp_class(x) fpclass(x) 2877 # endif 2878 # if defined(FP_CLASS_PINF) && defined(FP_CLASS_SNAN) 2879 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_CLASS_SNAN) 2880 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_CLASS_QNAN) 2881 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_CLASS_NINF) 2882 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_CLASS_PINF) 2883 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_CLASS_NNORM) 2884 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_CLASS_PNORM) 2885 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_CLASS_NDENORM) 2886 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_CLASS_PDENORM) 2887 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_CLASS_NZERO) 2888 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_CLASS_PZERO) 2889 # elif defined(FP_PINF) && defined(FP_QNAN) 2890 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN) 2891 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN) 2892 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NINF) 2893 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PINF) 2894 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NNORM) 2895 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PNORM) 2896 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NDENORM) 2897 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PDENORM) 2898 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NZERO) 2899 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PZERO) 2900 # else 2901 # undef Perl_fp_class /* Unknown set of defines */ 2902 # endif 2903 #endif 2904 2905 /* fp_class(): Legacy: at least Tru64, some versions of IRIX. */ 2906 #if !defined(Perl_fp_class) && (defined(HAS_FP_CLASS)||defined(HAS_FP_CLASSL)) 2907 # include <math.h> 2908 # if !defined(FP_SNAN) && defined(I_FP_CLASS) 2909 # include <fp_class.h> 2910 # endif 2911 # if defined(FP_POS_INF) && defined(FP_QNAN) 2912 # ifdef __sgi /* XXX Configure test instead */ 2913 # ifdef USE_LONG_DOUBLE 2914 # define Perl_fp_class(x) fp_class_l(x) 2915 # else 2916 # define Perl_fp_class(x) fp_class_d(x) 2917 # endif 2918 # else 2919 # if defined(USE_LONG_DOUBLE) && defined(HAS_FP_CLASSL) 2920 # define Perl_fp_class(x) fp_classl(x) 2921 # else 2922 # define Perl_fp_class(x) fp_class(x) 2923 # endif 2924 # endif 2925 # if defined(FP_POS_INF) && defined(FP_QNAN) 2926 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN) 2927 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN) 2928 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NEG_INF) 2929 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_POS_INF) 2930 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NEG_NORM) 2931 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_POS_NORM) 2932 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NEG_DENORM) 2933 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_POS_DENORM) 2934 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NEG_ZERO) 2935 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_POS_ZERO) 2936 # else 2937 # undef Perl_fp_class /* Unknown set of defines */ 2938 # endif 2939 # endif 2940 #endif 2941 2942 /* class(), _class(): Legacy: AIX. */ 2943 #if !defined(Perl_fp_class) && defined(HAS_CLASS) 2944 # include <math.h> 2945 # if defined(FP_PLUS_NORM) && defined(FP_PLUS_INF) 2946 # ifndef _cplusplus 2947 # define Perl_fp_class(x) class(x) 2948 # else 2949 # define Perl_fp_class(x) _class(x) 2950 # endif 2951 # if defined(FP_PLUS_INF) && defined(FP_NANQ) 2952 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_NANS) 2953 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_NANQ) 2954 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF) 2955 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF) 2956 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM) 2957 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM) 2958 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM) 2959 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM) 2960 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO) 2961 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO) 2962 # else 2963 # undef Perl_fp_class /* Unknown set of defines */ 2964 # endif 2965 # endif 2966 #endif 2967 2968 /* Win32: _fpclass(), _isnan(), _finite(). */ 2969 #ifdef _MSC_VER 2970 # ifndef Perl_isnan 2971 # define Perl_isnan(x) _isnan(x) 2972 # endif 2973 # ifndef Perl_isfinite 2974 # define Perl_isfinite(x) _finite(x) 2975 # endif 2976 # ifndef Perl_fp_class_snan 2977 /* No simple way to #define Perl_fp_class because _fpclass() 2978 * returns a set of bits. */ 2979 # define Perl_fp_class_snan(x) (_fpclass(x) & _FPCLASS_SNAN) 2980 # define Perl_fp_class_qnan(x) (_fpclass(x) & _FPCLASS_QNAN) 2981 # define Perl_fp_class_nan(x) (_fpclass(x) & (_FPCLASS_SNAN|_FPCLASS_QNAN)) 2982 # define Perl_fp_class_ninf(x) (_fpclass(x) & _FPCLASS_NINF) 2983 # define Perl_fp_class_pinf(x) (_fpclass(x) & _FPCLASS_PINF) 2984 # define Perl_fp_class_inf(x) (_fpclass(x) & (_FPCLASS_NINF|_FPCLASS_PINF)) 2985 # define Perl_fp_class_nnorm(x) (_fpclass(x) & _FPCLASS_NN) 2986 # define Perl_fp_class_pnorm(x) (_fpclass(x) & _FPCLASS_PN) 2987 # define Perl_fp_class_norm(x) (_fpclass(x) & (_FPCLASS_NN|_FPCLASS_PN)) 2988 # define Perl_fp_class_ndenorm(x) (_fpclass(x) & _FPCLASS_ND) 2989 # define Perl_fp_class_pdenorm(x) (_fpclass(x) & _FPCLASS_PD) 2990 # define Perl_fp_class_denorm(x) (_fpclass(x) & (_FPCLASS_ND|_FPCLASS_PD)) 2991 # define Perl_fp_class_nzero(x) (_fpclass(x) & _FPCLASS_NZ) 2992 # define Perl_fp_class_pzero(x) (_fpclass(x) & _FPCLASS_PZ) 2993 # define Perl_fp_class_zero(x) (_fpclass(x) & (_FPCLASS_NZ|_FPCLASS_PZ)) 2994 # endif 2995 #endif 2996 2997 #if !defined(Perl_fp_class_inf) && \ 2998 defined(Perl_fp_class_pinf) && defined(Perl_fp_class_ninf) 2999 # define Perl_fp_class_inf(x) \ 3000 (Perl_fp_class_pinf(x) || Perl_fp_class_ninf(x)) 3001 #endif 3002 3003 #if !defined(Perl_fp_class_nan) && \ 3004 defined(Perl_fp_class_snan) && defined(Perl_fp_class_qnan) 3005 # define Perl_fp_class_nan(x) \ 3006 (Perl_fp_class_snan(x) || Perl_fp_class_qnan(x)) 3007 #endif 3008 3009 #if !defined(Perl_fp_class_zero) && \ 3010 defined(Perl_fp_class_pzero) && defined(Perl_fp_class_nzero) 3011 # define Perl_fp_class_zero(x) \ 3012 (Perl_fp_class_pzero(x) || Perl_fp_class_nzero(x)) 3013 #endif 3014 3015 #if !defined(Perl_fp_class_norm) && \ 3016 defined(Perl_fp_class_pnorm) && defined(Perl_fp_class_nnorm) 3017 # define Perl_fp_class_norm(x) \ 3018 (Perl_fp_class_pnorm(x) || Perl_fp_class_nnorm(x)) 3019 #endif 3020 3021 #if !defined(Perl_fp_class_denorm) && \ 3022 defined(Perl_fp_class_pdenorm) && defined(Perl_fp_class_ndenorm) 3023 # define Perl_fp_class_denorm(x) \ 3024 (Perl_fp_class_pdenorm(x) || Perl_fp_class_ndenorm(x)) 3025 #endif 3026 3027 #ifndef Perl_isnan 3028 # ifdef Perl_fp_class_nan 3029 # define Perl_isnan(x) Perl_fp_class_nan(x) 3030 # elif defined(HAS_UNORDERED) 3031 # define Perl_isnan(x) unordered((x), 0.0) 3032 # else 3033 # define Perl_isnan(x) ((x)!=(x)) 3034 # endif 3035 #endif 3036 3037 #ifndef Perl_isinf 3038 # ifdef Perl_fp_class_inf 3039 # define Perl_isinf(x) Perl_fp_class_inf(x) 3040 # endif 3041 #endif 3042 3043 #ifndef Perl_isfinite 3044 # if defined(HAS_ISFINITE) && !defined(isfinite) 3045 # define Perl_isfinite(x) isfinite((double)(x)) 3046 # elif defined(HAS_FINITE) 3047 # define Perl_isfinite(x) finite((double)(x)) 3048 # elif defined(Perl_fp_class_finite) 3049 # define Perl_isfinite(x) Perl_fp_class_finite(x) 3050 # else 3051 /* For the infinities the multiplication returns nan, 3052 * for the nan the multiplication also returns nan, 3053 * for everything else (that is, finite) zero should be returned. */ 3054 # define Perl_isfinite(x) (((x) * 0) == 0) 3055 # endif 3056 #endif 3057 3058 #ifndef Perl_isinf 3059 # if defined(Perl_isfinite) && defined(Perl_isnan) 3060 # define Perl_isinf(x) (!(Perl_isfinite(x)||Perl_isnan(x))) 3061 # endif 3062 #endif 3063 3064 /* We need Perl_isfinitel (ends with ell) (if available) even when 3065 * not USE_LONG_DOUBLE because the printf code (sv_catpvfn_flags) 3066 * needs that. */ 3067 #if defined(HAS_LONG_DOUBLE) && !defined(Perl_isfinitel) 3068 /* If isfinite() is a macro and looks like we have C99, 3069 * we assume it's the type-aware C99 isfinite(). */ 3070 # if defined(HAS_ISFINITE) && defined(isfinite) && defined(HAS_C99) 3071 # define Perl_isfinitel(x) isfinite(x) 3072 # elif defined(HAS_ISFINITEL) 3073 # define Perl_isfinitel(x) isfinitel(x) 3074 # elif defined(HAS_FINITEL) 3075 # define Perl_isfinitel(x) finitel(x) 3076 # elif defined(HAS_ISINFL) && defined(HAS_ISNANL) 3077 # define Perl_isfinitel(x) (!(isinfl(x)||isnanl(x))) 3078 # else 3079 # define Perl_isfinitel(x) ((x) * 0 == 0) /* See Perl_isfinite. */ 3080 # endif 3081 #endif 3082 3083 /* The default is to use Perl's own atof() implementation (in numeric.c). 3084 * This knows about if 'use locale' is in effect or not, and handles the radix 3085 * character accordingly. On some platforms (e.g. UNICOS) it is however best 3086 * to use the native implementation of atof, as long as you accept that the 3087 * current underlying locale will affect the radix character. Perl's version 3088 * uses a dot for a radix, execpt within the lexical scope of a Perl C<use 3089 * locale> statement. 3090 * 3091 * You can experiment with using your native one by -DUSE_PERL_ATOF=0. 3092 * Some good tests to try out with either setting are t/base/num.t, 3093 * t/op/numconvert.t, and t/op/pack.t. Note that if using long doubles 3094 * you may need to be using a different function than atof! */ 3095 3096 #ifndef USE_PERL_ATOF 3097 # ifndef _UNICOS 3098 # define USE_PERL_ATOF 3099 # endif 3100 #else 3101 # if USE_PERL_ATOF == 0 3102 # undef USE_PERL_ATOF 3103 # endif 3104 #endif 3105 3106 #ifdef USE_PERL_ATOF 3107 # define Perl_atof(s) Perl_my_atof(aTHX_ s) 3108 # define Perl_atof2(s, n) Perl_my_atof3(aTHX_ (s), &(n), 0) 3109 #else 3110 # define Perl_atof(s) (NV)atof(s) 3111 # define Perl_atof2(s, n) ((n) = atof(s)) 3112 #endif 3113 #define my_atof2(a,b) my_atof3(a,b,0) 3114 3115 /* 3116 =for apidoc AmTR|NV|Atof|NN const char * const s 3117 3118 This is a synonym for L</C<my_atof>>. 3119 3120 =cut 3121 3122 */ 3123 3124 #define Atof my_atof 3125 3126 /* 3127 =for apidoc_section $numeric 3128 =for apidoc AmT|NV|Perl_acos|NV x 3129 =for apidoc_item |NV|Perl_asin|NV x 3130 =for apidoc_item |NV|Perl_atan|NV x 3131 =for apidoc_item |NV|Perl_atan2|NV x|NV y 3132 =for apidoc_item |NV|Perl_ceil|NV x 3133 =for apidoc_item |NV|Perl_cos|NV x 3134 =for apidoc_item |NV|Perl_cosh|NV x 3135 =for apidoc_item |NV|Perl_exp|NV x 3136 =for apidoc_item |NV|Perl_floor|NV x 3137 =for apidoc_item |NV|Perl_fmod|NV x|NV y 3138 =for apidoc_item |NV|Perl_frexp|NV x|int *exp 3139 =for apidoc_item |IV|Perl_isfinite|NV x 3140 =for apidoc_item |IV|Perl_isinf|NV x 3141 =for apidoc_item |IV|Perl_isnan|NV x 3142 =for apidoc_item |NV|Perl_ldexp|NV x|int exp 3143 =for apidoc_item |NV|Perl_log|NV x 3144 =for apidoc_item |NV|Perl_log10|NV x 3145 =for apidoc_item |NV|Perl_modf|NV x|NV *iptr 3146 =for apidoc_item |NV|Perl_pow|NV x|NV y 3147 =for apidoc_item |NV|Perl_sin|NV x 3148 =for apidoc_item |NV|Perl_sinh|NV x 3149 =for apidoc_item |NV|Perl_sqrt|NV x 3150 =for apidoc_item |NV|Perl_tan|NV x 3151 =for apidoc_item |NV|Perl_tanh|NV x 3152 3153 These perform the corresponding mathematical operation on the operand(s), using 3154 the libc function designed for the task that has just enough precision for an 3155 NV on this platform. If no such function with sufficient precision exists, 3156 the highest precision one available is used. 3157 3158 =cut 3159 3160 */ 3161 3162 /* 3163 * CHAR_MIN and CHAR_MAX are not included here, as the (char) type may be 3164 * ambiguous. It may be equivalent to (signed char) or (unsigned char) 3165 * depending on local options. Until Configure detects this (or at least 3166 * detects whether the "signed" keyword is available) the CHAR ranges 3167 * will not be included. UCHAR functions normally. 3168 * - kja 3169 */ 3170 3171 #define PERL_UCHAR_MIN ((unsigned char)0) 3172 #define PERL_UCHAR_MAX ((unsigned char)UCHAR_MAX) 3173 3174 #define PERL_USHORT_MIN ((unsigned short)0) 3175 #define PERL_USHORT_MAX ((unsigned short)USHRT_MAX) 3176 3177 #define PERL_SHORT_MAX ((short)SHRT_MAX) 3178 #define PERL_SHORT_MIN ((short)SHRT_MIN) 3179 3180 #define PERL_UINT_MAX ((unsigned int)UINT_MAX) 3181 #define PERL_UINT_MIN ((unsigned int)0) 3182 3183 #define PERL_INT_MAX ((int)INT_MAX) 3184 #define PERL_INT_MIN ((int)INT_MIN) 3185 3186 #define PERL_ULONG_MAX ((unsigned long)ULONG_MAX) 3187 #define PERL_ULONG_MIN ((unsigned long)0L) 3188 3189 #define PERL_LONG_MAX ((long)LONG_MAX) 3190 #define PERL_LONG_MIN ((long)LONG_MIN) 3191 3192 #ifdef UV_IS_QUAD 3193 # define PERL_UQUAD_MAX (~(UV)0) 3194 # define PERL_UQUAD_MIN ((UV)0) 3195 # define PERL_QUAD_MAX ((IV) (PERL_UQUAD_MAX >> 1)) 3196 # define PERL_QUAD_MIN (-PERL_QUAD_MAX - ((3 & -1) == 3)) 3197 #endif 3198 3199 /* 3200 =for apidoc_section $integer 3201 3202 =for apidoc Amn |int|PERL_INT_MAX 3203 =for apidoc_item |int|PERL_INT_MIN 3204 =for apidoc_item |long|PERL_LONG_MAX 3205 =for apidoc_item |long|PERL_LONG_MIN 3206 =for apidoc_item |IV|PERL_QUAD_MAX 3207 =for apidoc_item |IV|PERL_QUAD_MIN 3208 =for apidoc_item |short|PERL_SHORT_MAX 3209 =for apidoc_item |short|PERL_SHORT_MIN 3210 =for apidoc_item |U8|PERL_UCHAR_MAX 3211 =for apidoc_item |U8|PERL_UCHAR_MIN 3212 =for apidoc_item |unsigned int|PERL_UINT_MAX 3213 =for apidoc_item |unsigned int|PERL_UINT_MIN 3214 =for apidoc_item |unsigned long|PERL_ULONG_MAX 3215 =for apidoc_item |unsigned long|PERL_ULONG_MIN 3216 =for apidoc_item |UV|PERL_UQUAD_MAX 3217 =for apidoc_item |UV|PERL_UQUAD_MIN 3218 =for apidoc_item |unsigned short|PERL_USHORT_MAX 3219 =for apidoc_item |unsigned short|PERL_USHORT_MIN 3220 3221 These give the largest and smallest number representable in the current 3222 platform in variables of the corresponding types. 3223 3224 For signed types, the smallest representable number is the most negative 3225 number, the one furthest away from zero. 3226 3227 For C99 and later compilers, these correspond to things like C<INT_MAX>, which 3228 are available to the C code. But these constants, furnished by Perl, 3229 allow code compiled on earlier compilers to portably have access to the same 3230 constants. 3231 3232 =cut 3233 3234 */ 3235 3236 typedef MEM_SIZE STRLEN; 3237 3238 typedef struct op OP; 3239 typedef struct cop COP; 3240 typedef struct unop UNOP; 3241 typedef struct unop_aux UNOP_AUX; 3242 typedef struct binop BINOP; 3243 typedef struct listop LISTOP; 3244 typedef struct logop LOGOP; 3245 typedef struct pmop PMOP; 3246 typedef struct svop SVOP; 3247 typedef struct padop PADOP; 3248 typedef struct pvop PVOP; 3249 typedef struct loop LOOP; 3250 typedef struct methop METHOP; 3251 3252 #ifdef PERL_CORE 3253 typedef struct opslab OPSLAB; 3254 typedef struct opslot OPSLOT; 3255 #endif 3256 3257 typedef struct block_hooks BHK; 3258 typedef struct custom_op XOP; 3259 3260 typedef struct interpreter PerlInterpreter; 3261 3262 /* SGI's <sys/sema.h> has struct sv */ 3263 #if defined(__sgi) 3264 # define STRUCT_SV perl_sv 3265 #else 3266 # define STRUCT_SV sv 3267 #endif 3268 typedef struct STRUCT_SV SV; 3269 typedef struct av AV; 3270 typedef struct hv HV; 3271 typedef struct cv CV; 3272 typedef struct p5rx REGEXP; 3273 typedef struct gp GP; 3274 typedef struct gv GV; 3275 typedef struct io IO; 3276 typedef struct context PERL_CONTEXT; 3277 typedef struct block BLOCK; 3278 typedef struct invlist INVLIST; 3279 3280 typedef struct magic MAGIC; 3281 typedef struct xpv XPV; 3282 typedef struct xpviv XPVIV; 3283 typedef struct xpvuv XPVUV; 3284 typedef struct xpvnv XPVNV; 3285 typedef struct xpvmg XPVMG; 3286 typedef struct xpvlv XPVLV; 3287 typedef struct xpvinvlist XINVLIST; 3288 typedef struct xpvav XPVAV; 3289 typedef struct xpvhv XPVHV; 3290 typedef struct xpvgv XPVGV; 3291 typedef struct xpvcv XPVCV; 3292 typedef struct xpvbm XPVBM; 3293 typedef struct xpvfm XPVFM; 3294 typedef struct xpvio XPVIO; 3295 typedef struct xobject XPVOBJ; 3296 typedef struct mgvtbl MGVTBL; 3297 typedef union any ANY; 3298 typedef struct ptr_tbl_ent PTR_TBL_ENT_t; 3299 typedef struct ptr_tbl PTR_TBL_t; 3300 typedef struct clone_params CLONE_PARAMS; 3301 3302 /* a pad is currently just an AV; but that might change, 3303 * so hide the type. */ 3304 typedef struct padlist PADLIST; 3305 typedef AV PAD; 3306 typedef struct padnamelist PADNAMELIST; 3307 typedef struct padname PADNAME; 3308 3309 /* always enable PERL_OP_PARENT */ 3310 #if !defined(PERL_OP_PARENT) 3311 # define PERL_OP_PARENT 3312 #endif 3313 3314 /* enable PERL_COPY_ON_WRITE by default */ 3315 #if !defined(PERL_COPY_ON_WRITE) && !defined(PERL_NO_COW) 3316 # define PERL_COPY_ON_WRITE 3317 #endif 3318 3319 #ifdef PERL_COPY_ON_WRITE 3320 # define PERL_ANY_COW 3321 #else 3322 # define PERL_SAWAMPERSAND 3323 #endif 3324 3325 #if defined(PERL_DEBUG_READONLY_OPS) && !defined(USE_ITHREADS) 3326 # error PERL_DEBUG_READONLY_OPS only works with ithreads 3327 #endif 3328 3329 #include "handy.h" 3330 #include "charclass_invlists.h" 3331 3332 #if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_RAWIO) 3333 # if LSEEKSIZE == 8 && !defined(USE_64_BIT_RAWIO) 3334 # define USE_64_BIT_RAWIO /* implicit */ 3335 # endif 3336 #endif 3337 3338 /* Notice the use of HAS_FSEEKO: now we are obligated to always use 3339 * fseeko/ftello if possible. Don't go #defining ftell to ftello yourself, 3340 * however, because operating systems like to do that themself. */ 3341 #ifndef FSEEKSIZE 3342 # ifdef HAS_FSEEKO 3343 # define FSEEKSIZE LSEEKSIZE 3344 # else 3345 # define FSEEKSIZE LONGSIZE 3346 # endif 3347 #endif 3348 3349 #if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_STDIO) 3350 # if FSEEKSIZE == 8 && !defined(USE_64_BIT_STDIO) 3351 # define USE_64_BIT_STDIO /* implicit */ 3352 # endif 3353 #endif 3354 3355 #ifdef USE_64_BIT_RAWIO 3356 # ifdef HAS_OFF64_T 3357 # undef Off_t 3358 # define Off_t off64_t 3359 # undef LSEEKSIZE 3360 # define LSEEKSIZE 8 3361 # endif 3362 /* Most 64-bit environments have defines like _LARGEFILE_SOURCE that 3363 * will trigger defines like the ones below. Some 64-bit environments, 3364 * however, do not. Therefore we have to explicitly mix and match. */ 3365 # if defined(USE_OPEN64) 3366 # define open open64 3367 # endif 3368 # if defined(USE_LSEEK64) 3369 # define lseek lseek64 3370 # else 3371 # if defined(USE_LLSEEK) 3372 # define lseek llseek 3373 # endif 3374 # endif 3375 # if defined(USE_STAT64) 3376 # define stat stat64 3377 # endif 3378 # if defined(USE_FSTAT64) 3379 # define fstat fstat64 3380 # endif 3381 # if defined(USE_LSTAT64) 3382 # define lstat lstat64 3383 # endif 3384 # if defined(USE_FLOCK64) 3385 # define flock flock64 3386 # endif 3387 # if defined(USE_LOCKF64) 3388 # define lockf lockf64 3389 # endif 3390 # if defined(USE_FCNTL64) 3391 # define fcntl fcntl64 3392 # endif 3393 # if defined(USE_TRUNCATE64) 3394 # define truncate truncate64 3395 # endif 3396 # if defined(USE_FTRUNCATE64) 3397 # define ftruncate ftruncate64 3398 # endif 3399 #endif 3400 3401 #ifdef USE_64_BIT_STDIO 3402 # ifdef HAS_FPOS64_T 3403 # undef Fpos_t 3404 # define Fpos_t fpos64_t 3405 # endif 3406 /* Most 64-bit environments have defines like _LARGEFILE_SOURCE that 3407 * will trigger defines like the ones below. Some 64-bit environments, 3408 * however, do not. */ 3409 # if defined(USE_FOPEN64) 3410 # define fopen fopen64 3411 # endif 3412 # if defined(USE_FSEEK64) 3413 # define fseek fseek64 /* don't do fseeko here, see perlio.c */ 3414 # endif 3415 # if defined(USE_FTELL64) 3416 # define ftell ftell64 /* don't do ftello here, see perlio.c */ 3417 # endif 3418 # if defined(USE_FSETPOS64) 3419 # define fsetpos fsetpos64 3420 # endif 3421 # if defined(USE_FGETPOS64) 3422 # define fgetpos fgetpos64 3423 # endif 3424 # if defined(USE_TMPFILE64) 3425 # define tmpfile tmpfile64 3426 # endif 3427 # if defined(USE_FREOPEN64) 3428 # define freopen freopen64 3429 # endif 3430 #endif 3431 3432 #if defined(OS2) 3433 # include "iperlsys.h" 3434 #endif 3435 3436 #ifdef DOSISH 3437 # if defined(OS2) 3438 # include "os2ish.h" 3439 # else 3440 # include "dosish.h" 3441 # endif 3442 #elif defined(VMS) 3443 # include "vmsish.h" 3444 #elif defined(PLAN9) 3445 # include "./plan9/plan9ish.h" 3446 #elif defined(__VOS__) 3447 # ifdef __GNUC__ 3448 # include "./vos/vosish.h" 3449 # else 3450 # include "vos/vosish.h" 3451 # endif 3452 #elif defined(__HAIKU__) 3453 # include "haiku/haikuish.h" 3454 #else 3455 # include "unixish.h" 3456 #endif 3457 3458 #ifdef __amigaos4__ 3459 # include "amigaos.h" 3460 # undef FD_CLOEXEC /* a lie in AmigaOS */ 3461 #endif 3462 3463 /* NSIG logic from Configure --> */ 3464 #ifndef NSIG 3465 # ifdef _NSIG 3466 # define NSIG (_NSIG) 3467 # elif defined(SIGMAX) 3468 # define NSIG (SIGMAX+1) 3469 # elif defined(SIG_MAX) 3470 # define NSIG (SIG_MAX+1) 3471 # elif defined(_SIG_MAX) 3472 # define NSIG (_SIG_MAX+1) 3473 # elif defined(MAXSIG) 3474 # define NSIG (MAXSIG+1) 3475 # elif defined(MAX_SIG) 3476 # define NSIG (MAX_SIG+1) 3477 # elif defined(SIGARRAYSIZE) 3478 # define NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 3479 # elif defined(_sys_nsig) 3480 # define NSIG (_sys_nsig) /* Solaris 2.5 */ 3481 # else 3482 /* Default to some arbitrary number that's big enough to get most 3483 * of the common signals. */ 3484 # define NSIG 50 3485 # endif 3486 #endif 3487 /* <-- NSIG logic from Configure */ 3488 3489 #ifndef NO_ENVIRON_ARRAY 3490 # define USE_ENVIRON_ARRAY 3491 #endif 3492 3493 #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) 3494 /* having sigaction(2) means that the OS supports both 1-arg and 3-arg 3495 * signal handlers. But the perl core itself only fully supports 1-arg 3496 * handlers, so don't enable for now. 3497 * NB: POSIX::sigaction() supports both. 3498 * 3499 * # define PERL_USE_3ARG_SIGHANDLER 3500 */ 3501 #endif 3502 3503 /* Siginfo_t: 3504 * This is an alias for the OS's siginfo_t, except that where the OS 3505 * doesn't support it, declare a dummy version instead. This allows us to 3506 * have signal handler functions which always have a Siginfo_t parameter 3507 * regardless of platform, (and which will just be passed a NULL value 3508 * where the OS doesn't support HAS_SIGACTION). 3509 */ 3510 3511 #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) 3512 typedef siginfo_t Siginfo_t; 3513 #else 3514 #ifdef si_signo /* minix */ 3515 #undef si_signo 3516 #endif 3517 typedef struct { 3518 int si_signo; 3519 } Siginfo_t; 3520 #endif 3521 3522 3523 /* 3524 * initialise to avoid floating-point exceptions from overflow, etc 3525 */ 3526 #ifndef PERL_FPU_INIT 3527 # ifdef HAS_FPSETMASK 3528 # if HAS_FLOATINGPOINT_H 3529 # include <floatingpoint.h> 3530 # endif 3531 /* Some operating systems have this as a macro, which in turn expands to a comma 3532 expression, and the last sub-expression is something that gets calculated, 3533 and then they have the gall to warn that a value computed is not used. Hence 3534 cast to void. */ 3535 # define PERL_FPU_INIT (void)fpsetmask(0) 3536 # elif defined(SIGFPE) && defined(SIG_IGN) 3537 # define PERL_FPU_INIT PL_sigfpe_saved = (Sighandler_t) signal(SIGFPE, SIG_IGN) 3538 # define PERL_FPU_PRE_EXEC { Sigsave_t xfpe; rsignal_save(SIGFPE, PL_sigfpe_saved, &xfpe); 3539 # define PERL_FPU_POST_EXEC rsignal_restore(SIGFPE, &xfpe); } 3540 # else 3541 # define PERL_FPU_INIT 3542 # endif 3543 #endif 3544 #ifndef PERL_FPU_PRE_EXEC 3545 # define PERL_FPU_PRE_EXEC { 3546 # define PERL_FPU_POST_EXEC } 3547 #endif 3548 3549 /* In Tru64 the cc -ieee enables the IEEE math but disables traps. 3550 * We need to reenable the "invalid" trap because otherwise generation 3551 * of NaN values leaves the IEEE fp flags in bad state, leaving any further 3552 * fp ops behaving strangely (Inf + 1 resulting in zero, for example). */ 3553 #ifdef __osf__ 3554 # include <machine/fpu.h> 3555 # define PERL_SYS_FPU_INIT \ 3556 STMT_START { \ 3557 ieee_set_fp_control(IEEE_TRAP_ENABLE_INV); \ 3558 signal(SIGFPE, SIG_IGN); \ 3559 } STMT_END 3560 #endif 3561 /* In IRIX the default for Flush to Zero bit is true, 3562 * which means that results going below the minimum of normal 3563 * floating points go to zero, instead of going denormal/subnormal. 3564 * This is unlike almost any other system running Perl, so let's clear it. 3565 * [perl #123767] IRIX64 blead (ddce084a) opbasic/arith.t failure, originally 3566 * [perl #120426] small numbers shouldn't round to zero if they have extra floating digits 3567 * 3568 * XXX The flush-to-zero behaviour should be a Configure scan. 3569 * To change the behaviour usually requires some system-specific 3570 * incantation, though, like the below. */ 3571 #ifdef __sgi 3572 # include <sys/fpu.h> 3573 # define PERL_SYS_FPU_INIT \ 3574 STMT_START { \ 3575 union fpc_csr csr; \ 3576 csr.fc_word = get_fpc_csr(); \ 3577 csr.fc_struct.flush = 0; \ 3578 set_fpc_csr(csr.fc_word); \ 3579 } STMT_END 3580 #endif 3581 3582 #ifndef PERL_SYS_FPU_INIT 3583 # define PERL_SYS_FPU_INIT NOOP 3584 #endif 3585 3586 #ifndef PERL_SYS_INIT3_BODY 3587 # define PERL_SYS_INIT3_BODY(argvp,argcp,envp) PERL_SYS_INIT_BODY(argvp,argcp) 3588 #endif 3589 3590 /* 3591 =for apidoc_section $embedding 3592 3593 =for apidoc Am|void|PERL_SYS_INIT |int *argc|char*** argv 3594 =for apidoc_item| |PERL_SYS_INIT3|int *argc|char*** argv|char*** env 3595 3596 These provide system-specific tune up of the C runtime environment necessary to 3597 run Perl interpreters. Only one should be used, and it should be called only 3598 once, before creating any Perl interpreters. 3599 3600 They differ in that C<PERL_SYS_INIT3> also initializes C<env>. 3601 3602 =for apidoc Am|void|PERL_SYS_TERM| 3603 Provides system-specific clean up of the C runtime environment after 3604 running Perl interpreters. This should be called only once, after 3605 freeing any remaining Perl interpreters. 3606 3607 =cut 3608 */ 3609 3610 #define PERL_SYS_INIT(argc, argv) Perl_sys_init(argc, argv) 3611 #define PERL_SYS_INIT3(argc, argv, env) Perl_sys_init3(argc, argv, env) 3612 #define PERL_SYS_TERM() Perl_sys_term() 3613 3614 #ifndef PERL_WRITE_MSG_TO_CONSOLE 3615 # define PERL_WRITE_MSG_TO_CONSOLE(io, msg, len) PerlIO_write(io, msg, len) 3616 #endif 3617 3618 #ifndef MAXPATHLEN 3619 # ifdef PATH_MAX 3620 # ifdef _POSIX_PATH_MAX 3621 # if PATH_MAX > _POSIX_PATH_MAX 3622 /* POSIX 1990 (and pre) was ambiguous about whether PATH_MAX 3623 * included the null byte or not. Later amendments of POSIX, 3624 * XPG4, the Austin Group, and the Single UNIX Specification 3625 * all explicitly include the null byte in the PATH_MAX. 3626 * Ditto for _POSIX_PATH_MAX. */ 3627 # define MAXPATHLEN PATH_MAX 3628 # else 3629 # define MAXPATHLEN _POSIX_PATH_MAX 3630 # endif 3631 # else 3632 # define MAXPATHLEN (PATH_MAX+1) 3633 # endif 3634 # else 3635 # define MAXPATHLEN 1024 /* Err on the large side. */ 3636 # endif 3637 #endif 3638 3639 /* clang Thread Safety Analysis/Annotations/Attributes 3640 * http://clang.llvm.org/docs/ThreadSafetyAnalysis.html 3641 * 3642 * Available since clang 3.6-ish (appeared in 3.4, but shaky still in 3.5). 3643 * Apple XCode hijacks __clang_major__ and __clang_minor__ 3644 * (6.1 means really clang 3.6), so needs extra hijinks 3645 * (could probably also test the contents of __apple_build_version__). 3646 */ 3647 #if defined(USE_ITHREADS) && defined(I_PTHREAD) && \ 3648 defined(__clang__) && \ 3649 !defined(SWIG) && \ 3650 ((!defined(__apple_build_version__) && \ 3651 ((__clang_major__ == 3 && __clang_minor__ >= 6) || \ 3652 (__clang_major__ >= 4))) || \ 3653 (defined(__apple_build_version__) && \ 3654 ((__clang_major__ == 6 && __clang_minor__ >= 1) || \ 3655 (__clang_major__ >= 7)))) 3656 # define PERL_TSA__(x) __attribute__((x)) 3657 # define PERL_TSA_ACTIVE 3658 #else 3659 # define PERL_TSA__(x) /* No TSA, make TSA attributes no-ops. */ 3660 # undef PERL_TSA_ACTIVE 3661 #endif 3662 3663 /* PERL_TSA_CAPABILITY() is used to annotate typedefs. 3664 * typedef old_type PERL_TSA_CAPABILITY("mutex") new_type; 3665 */ 3666 #define PERL_TSA_CAPABILITY(x) \ 3667 PERL_TSA__(capability(x)) 3668 3669 /* In the below examples the mutex must be lexically visible, usually 3670 * either as global variables, or as function arguments. */ 3671 3672 /* PERL_TSA_GUARDED_BY() is used to annotate global variables. 3673 * 3674 * Foo foo PERL_TSA_GUARDED_BY(mutex); 3675 */ 3676 #define PERL_TSA_GUARDED_BY(x) \ 3677 PERL_TSA__(guarded_by(x)) 3678 3679 /* PERL_TSA_PT_GUARDED_BY() is used to annotate global pointers. 3680 * The data _behind_ the pointer is guarded. 3681 * 3682 * Foo* ptr PERL_TSA_PT_GUARDED_BY(mutex); 3683 */ 3684 #define PERL_TSA_PT_GUARDED_BY(x) \ 3685 PERL_TSA__(pt_guarded_by(x)) 3686 3687 /* PERL_TSA_REQUIRES() is used to annotate functions. 3688 * The caller MUST hold the resource when calling the function. 3689 * 3690 * void Foo() PERL_TSA_REQUIRES(mutex); 3691 */ 3692 #define PERL_TSA_REQUIRES(x) \ 3693 PERL_TSA__(requires_capability(x)) 3694 3695 /* PERL_TSA_EXCLUDES() is used to annotate functions. 3696 * The caller MUST NOT hold resource when calling the function. 3697 * 3698 * EXCLUDES should be used when the function first acquires 3699 * the resource and then releases it. Use to avoid deadlock. 3700 * 3701 * void Foo() PERL_TSA_EXCLUDES(mutex); 3702 */ 3703 #define PERL_TSA_EXCLUDES(x) \ 3704 PERL_TSA__(locks_excluded(x)) 3705 3706 /* PERL_TSA_ACQUIRE() is used to annotate functions. 3707 * The caller MUST NOT hold the resource when calling the function, 3708 * and the function will acquire the resource. 3709 * 3710 * void Foo() PERL_TSA_ACQUIRE(mutex); 3711 */ 3712 #define PERL_TSA_ACQUIRE(x) \ 3713 PERL_TSA__(acquire_capability(x)) 3714 3715 /* PERL_TSA_RELEASE() is used to annotate functions. 3716 * The caller MUST hold the resource when calling the function, 3717 * and the function will release the resource. 3718 * 3719 * void Foo() PERL_TSA_RELEASE(mutex); 3720 */ 3721 #define PERL_TSA_RELEASE(x) \ 3722 PERL_TSA__(release_capability(x)) 3723 3724 /* PERL_TSA_NO_TSA is used to annotate functions. 3725 * Used when being intentionally unsafe, or when the code is too 3726 * complicated for the analysis. Use sparingly. 3727 * 3728 * void Foo() PERL_TSA_NO_TSA; 3729 */ 3730 #define PERL_TSA_NO_TSA \ 3731 PERL_TSA__(no_thread_safety_analysis) 3732 3733 /* There are more annotations/attributes available, see the clang 3734 * documentation for details. */ 3735 3736 #if defined(USE_ITHREADS) 3737 # if defined(WIN32) 3738 # include <win32thread.h> 3739 # elif defined(OS2) 3740 # include "os2thread.h" 3741 # elif defined(I_MACH_CTHREADS) 3742 # include <mach/cthreads.h> 3743 typedef cthread_t perl_os_thread; 3744 typedef mutex_t perl_mutex; 3745 typedef condition_t perl_cond; 3746 typedef void * perl_key; 3747 # elif defined(I_PTHREAD) /* Posix threads */ 3748 # include <pthread.h> 3749 typedef pthread_t perl_os_thread; 3750 typedef pthread_mutex_t PERL_TSA_CAPABILITY("mutex") perl_mutex; 3751 typedef pthread_cond_t perl_cond; 3752 typedef pthread_key_t perl_key; 3753 # endif 3754 3755 /* Many readers; single writer */ 3756 typedef struct { 3757 perl_mutex lock; 3758 perl_cond wakeup; 3759 SSize_t readers_count; 3760 } perl_RnW1_mutex_t; 3761 3762 3763 #endif /* USE_ITHREADS */ 3764 3765 #ifdef PERL_TSA_ACTIVE 3766 /* Since most pthread mutex interfaces have not been annotated, we 3767 * need to have these wrappers. The NO_TSA annotation is quite ugly 3768 * but it cannot be avoided in plain C, unlike in C++, where one could 3769 * e.g. use ACQUIRE() with no arg on a mutex lock method. 3770 * 3771 * The bodies of these wrappers are in util.c 3772 * 3773 * TODO: however, some platforms are starting to get these clang 3774 * thread safety annotations for pthreads, for example FreeBSD. 3775 * Do we need a way to a bypass these wrappers? */ 3776 EXTERN_C int perl_tsa_mutex_lock(perl_mutex* mutex) 3777 PERL_TSA_ACQUIRE(*mutex) 3778 PERL_TSA_NO_TSA; 3779 EXTERN_C int perl_tsa_mutex_unlock(perl_mutex* mutex) 3780 PERL_TSA_RELEASE(*mutex) 3781 PERL_TSA_NO_TSA; 3782 #endif 3783 3784 #if defined(WIN32) 3785 # include "win32.h" 3786 #endif 3787 3788 #define STATUS_UNIX PL_statusvalue 3789 #ifdef VMS 3790 # define STATUS_NATIVE PL_statusvalue_vms 3791 /* 3792 * vaxc$errno is only guaranteed to be valid if errno == EVMSERR, otherwise 3793 * its contents can not be trusted. Unfortunately, Perl seems to check 3794 * it on exit, so it when PL_statusvalue_vms is updated, vaxc$errno should 3795 * be updated also. 3796 */ 3797 # include <stsdef.h> 3798 # include <ssdef.h> 3799 /* Presume this because if VMS changes it, it will require a new 3800 * set of APIs for waiting on children for binary compatibility. 3801 */ 3802 # define child_offset_bits (8) 3803 # ifndef C_FAC_POSIX 3804 # define C_FAC_POSIX 0x35A000 3805 # endif 3806 3807 /* STATUS_EXIT - validates and returns a NATIVE exit status code for the 3808 * platform from the existing UNIX or Native status values. 3809 */ 3810 3811 # define STATUS_EXIT \ 3812 (((I32)PL_statusvalue_vms == -1 ? SS$_ABORT : PL_statusvalue_vms) | \ 3813 (VMSISH_HUSHED ? STS$M_INHIB_MSG : 0)) 3814 3815 3816 /* STATUS_NATIVE_CHILD_SET - Calculate UNIX status that matches the child 3817 * exit code and shifts the UNIX value over the correct number of bits to 3818 * be a child status. Usually the number of bits is 8, but that could be 3819 * platform dependent. The NATIVE status code is presumed to have either 3820 * from a child process. 3821 */ 3822 3823 /* This is complicated. The child processes return a true native VMS 3824 status which must be saved. But there is an assumption in Perl that 3825 the UNIX child status has some relationship to errno values, so 3826 Perl tries to translate it to text in some of the tests. 3827 In order to get the string translation correct, for the error, errno 3828 must be EVMSERR, but that generates a different text message 3829 than what the test programs are expecting. So an errno value must 3830 be derived from the native status value when an error occurs. 3831 That will hide the true native status message. With this version of 3832 perl, the true native child status can always be retrieved so that 3833 is not a problem. But in this case, Pl_statusvalue and errno may 3834 have different values in them. 3835 */ 3836 3837 # define STATUS_NATIVE_CHILD_SET(n) \ 3838 STMT_START { \ 3839 I32 evalue = (I32)n; \ 3840 if (evalue == EVMSERR) { \ 3841 PL_statusvalue_vms = vaxc$errno; \ 3842 PL_statusvalue = evalue; \ 3843 } else { \ 3844 PL_statusvalue_vms = evalue; \ 3845 if (evalue == -1) { \ 3846 PL_statusvalue = -1; \ 3847 PL_statusvalue_vms = SS$_ABORT; /* Should not happen */ \ 3848 } else \ 3849 PL_statusvalue = Perl_vms_status_to_unix(evalue, 1); \ 3850 set_vaxc_errno(evalue); \ 3851 if ((PL_statusvalue_vms & C_FAC_POSIX) == C_FAC_POSIX) \ 3852 set_errno(EVMSERR); \ 3853 else set_errno(Perl_vms_status_to_unix(evalue, 0)); \ 3854 PL_statusvalue = PL_statusvalue << child_offset_bits; \ 3855 } \ 3856 } STMT_END 3857 3858 # ifdef VMSISH_STATUS 3859 # define STATUS_CURRENT (VMSISH_STATUS ? STATUS_NATIVE : STATUS_UNIX) 3860 # else 3861 # define STATUS_CURRENT STATUS_UNIX 3862 # endif 3863 3864 /* STATUS_UNIX_SET - takes a UNIX/POSIX errno value and attempts to update 3865 * the NATIVE status to an equivalent value. Can not be used to translate 3866 * exit code values as exit code values are not guaranteed to have any 3867 * relationship at all to errno values. 3868 * This is used when Perl is forcing errno to have a specific value. 3869 */ 3870 # define STATUS_UNIX_SET(n) \ 3871 STMT_START { \ 3872 I32 evalue = (I32)n; \ 3873 PL_statusvalue = evalue; \ 3874 if (PL_statusvalue != -1) { \ 3875 if (PL_statusvalue != EVMSERR) { \ 3876 PL_statusvalue &= 0xFFFF; \ 3877 if (MY_POSIX_EXIT) \ 3878 PL_statusvalue_vms=PL_statusvalue ? SS$_ABORT : SS$_NORMAL;\ 3879 else PL_statusvalue_vms = Perl_unix_status_to_vms(evalue); \ 3880 } \ 3881 else { \ 3882 PL_statusvalue_vms = vaxc$errno; \ 3883 } \ 3884 } \ 3885 else PL_statusvalue_vms = SS$_ABORT; \ 3886 set_vaxc_errno(PL_statusvalue_vms); \ 3887 } STMT_END 3888 3889 /* STATUS_UNIX_EXIT_SET - Takes a UNIX/POSIX exit code and sets 3890 * the NATIVE error status based on it. 3891 * 3892 * When in the default mode to comply with the Perl VMS documentation, 3893 * 0 is a success and any other code sets the NATIVE status to a failure 3894 * code of SS$_ABORT. 3895 * 3896 * In the new POSIX EXIT mode, native status will be set so that the 3897 * actual exit code will can be retrieved by the calling program or 3898 * shell. 3899 * 3900 * If the exit code is not clearly a UNIX parent or child exit status, 3901 * it will be passed through as a VMS status. 3902 */ 3903 3904 # define STATUS_UNIX_EXIT_SET(n) \ 3905 STMT_START { \ 3906 I32 evalue = (I32)n; \ 3907 PL_statusvalue = evalue; \ 3908 if (MY_POSIX_EXIT) { \ 3909 if (evalue <= 0xFF00) { \ 3910 if (evalue > 0xFF) \ 3911 evalue = ((U8) (evalue >> child_offset_bits)); \ 3912 PL_statusvalue_vms = \ 3913 (C_FAC_POSIX | (evalue << 3 ) | \ 3914 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1)); \ 3915 } else /* forgive them Perl, for they have sinned */ \ 3916 PL_statusvalue_vms = evalue; \ 3917 } else { \ 3918 if (evalue == 0) \ 3919 PL_statusvalue_vms = SS$_NORMAL; \ 3920 else if (evalue <= 0xFF00) \ 3921 PL_statusvalue_vms = SS$_ABORT; \ 3922 else { /* forgive them Perl, for they have sinned */ \ 3923 if (evalue != EVMSERR) PL_statusvalue_vms = evalue; \ 3924 else PL_statusvalue_vms = vaxc$errno; \ 3925 /* And obviously used a VMS status value instead of UNIX */ \ 3926 PL_statusvalue = EVMSERR; \ 3927 } \ 3928 set_vaxc_errno(PL_statusvalue_vms); \ 3929 } \ 3930 } STMT_END 3931 3932 3933 /* STATUS_EXIT_SET - Takes a NATIVE/UNIX/POSIX exit code 3934 * and sets the NATIVE error status based on it. This special case 3935 * is needed to maintain compatibility with past VMS behavior. 3936 * 3937 * In the default mode on VMS, this number is passed through as 3938 * both the NATIVE and UNIX status. Which makes it different 3939 * that the STATUS_UNIX_EXIT_SET. 3940 * 3941 * In the new POSIX EXIT mode, native status will be set so that the 3942 * actual exit code will can be retrieved by the calling program or 3943 * shell. 3944 * 3945 * A POSIX exit code is from 0 to 255. If the exit code is higher 3946 * than this, it needs to be assumed that it is a VMS exit code and 3947 * passed through. 3948 */ 3949 3950 # define STATUS_EXIT_SET(n) \ 3951 STMT_START { \ 3952 I32 evalue = (I32)n; \ 3953 PL_statusvalue = evalue; \ 3954 if (MY_POSIX_EXIT) \ 3955 if (evalue > 255) PL_statusvalue_vms = evalue; else { \ 3956 PL_statusvalue_vms = \ 3957 (C_FAC_POSIX | (evalue << 3 ) | \ 3958 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1));} \ 3959 else \ 3960 PL_statusvalue_vms = evalue ? evalue : SS$_NORMAL; \ 3961 set_vaxc_errno(PL_statusvalue_vms); \ 3962 } STMT_END 3963 3964 3965 /* This macro forces a success status */ 3966 # define STATUS_ALL_SUCCESS \ 3967 (PL_statusvalue = 0, PL_statusvalue_vms = SS$_NORMAL) 3968 3969 /* This macro forces a failure status */ 3970 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, \ 3971 vaxc$errno = PL_statusvalue_vms = MY_POSIX_EXIT ? \ 3972 (C_FAC_POSIX | (1 << 3) | STS$K_ERROR | STS$M_INHIB_MSG) : SS$_ABORT) 3973 3974 #elif defined(__amigaos4__) 3975 /* A somewhat experimental attempt to simulate posix return code values */ 3976 # define STATUS_NATIVE PL_statusvalue_posix 3977 # define STATUS_NATIVE_CHILD_SET(n) \ 3978 STMT_START { \ 3979 PL_statusvalue_posix = (n); \ 3980 if (PL_statusvalue_posix < 0) { \ 3981 PL_statusvalue = -1; \ 3982 } \ 3983 else { \ 3984 PL_statusvalue = n << 8; \ 3985 } \ 3986 } STMT_END 3987 # define STATUS_UNIX_SET(n) \ 3988 STMT_START { \ 3989 PL_statusvalue = (n); \ 3990 if (PL_statusvalue != -1) \ 3991 PL_statusvalue &= 0xFFFF; \ 3992 } STMT_END 3993 # define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n) 3994 # define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n) 3995 # define STATUS_CURRENT STATUS_UNIX 3996 # define STATUS_EXIT STATUS_UNIX 3997 # define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0) 3998 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1) 3999 4000 #else 4001 # define STATUS_NATIVE PL_statusvalue_posix 4002 # if defined(WCOREDUMP) 4003 # define STATUS_NATIVE_CHILD_SET(n) \ 4004 STMT_START { \ 4005 PL_statusvalue_posix = (n); \ 4006 if (PL_statusvalue_posix == -1) \ 4007 PL_statusvalue = -1; \ 4008 else { \ 4009 PL_statusvalue = \ 4010 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \ 4011 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0) | \ 4012 (WIFSIGNALED(PL_statusvalue_posix) && WCOREDUMP(PL_statusvalue_posix) ? 0x80 : 0); \ 4013 } \ 4014 } STMT_END 4015 # elif defined(WIFEXITED) 4016 # define STATUS_NATIVE_CHILD_SET(n) \ 4017 STMT_START { \ 4018 PL_statusvalue_posix = (n); \ 4019 if (PL_statusvalue_posix == -1) \ 4020 PL_statusvalue = -1; \ 4021 else { \ 4022 PL_statusvalue = \ 4023 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \ 4024 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0); \ 4025 } \ 4026 } STMT_END 4027 # else 4028 # define STATUS_NATIVE_CHILD_SET(n) \ 4029 STMT_START { \ 4030 PL_statusvalue_posix = (n); \ 4031 if (PL_statusvalue_posix == -1) \ 4032 PL_statusvalue = -1; \ 4033 else { \ 4034 PL_statusvalue = \ 4035 PL_statusvalue_posix & 0xFFFF; \ 4036 } \ 4037 } STMT_END 4038 # endif 4039 # define STATUS_UNIX_SET(n) \ 4040 STMT_START { \ 4041 PL_statusvalue = (n); \ 4042 if (PL_statusvalue != -1) \ 4043 PL_statusvalue &= 0xFFFF; \ 4044 } STMT_END 4045 # define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n) 4046 # define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n) 4047 # define STATUS_CURRENT STATUS_UNIX 4048 # define STATUS_EXIT STATUS_UNIX 4049 # define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0) 4050 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1) 4051 #endif 4052 4053 /* flags in PL_exit_flags for nature of exit() */ 4054 #define PERL_EXIT_EXPECTED 0x01 4055 #define PERL_EXIT_DESTRUCT_END 0x02 /* Run END in perl_destruct */ 4056 #define PERL_EXIT_WARN 0x04 /* Warn if Perl_my_exit() or Perl_my_failure_exit() called */ 4057 #define PERL_EXIT_ABORT 0x08 /* Call abort() if Perl_my_exit() or Perl_my_failure_exit() called */ 4058 4059 #ifndef PERL_CORE 4060 /* format to use for version numbers in file/directory names */ 4061 /* XXX move to Configure? */ 4062 /* This was only ever used for the current version, and that can be done at 4063 compile time, as PERL_FS_VERSION, so should we just delete it? */ 4064 # ifndef PERL_FS_VER_FMT 4065 # define PERL_FS_VER_FMT "%d.%d.%d" 4066 # endif 4067 #endif 4068 4069 #ifndef PERL_FS_VERSION 4070 # define PERL_FS_VERSION PERL_VERSION_STRING 4071 #endif 4072 4073 /* 4074 4075 =for apidoc_section $io 4076 =for apidoc Amn|void|PERL_FLUSHALL_FOR_CHILD 4077 4078 This defines a way to flush all output buffers. This may be a 4079 performance issue, so we allow people to disable it. Also, if 4080 we are using stdio, there are broken implementations of fflush(NULL) 4081 out there, Solaris being the most prominent. 4082 4083 =cut 4084 */ 4085 4086 #ifndef PERL_FLUSHALL_FOR_CHILD 4087 # if defined(USE_PERLIO) || defined(FFLUSH_NULL) 4088 # define PERL_FLUSHALL_FOR_CHILD PerlIO_flush((PerlIO*)NULL) 4089 # elif defined(FFLUSH_ALL) 4090 # define PERL_FLUSHALL_FOR_CHILD my_fflush_all() 4091 # else 4092 # define PERL_FLUSHALL_FOR_CHILD NOOP 4093 # endif 4094 #endif 4095 4096 #ifndef PERL_WAIT_FOR_CHILDREN 4097 # define PERL_WAIT_FOR_CHILDREN NOOP 4098 #endif 4099 4100 /* the traditional thread-unsafe notion of "current interpreter". */ 4101 #ifndef PERL_SET_INTERP 4102 # define PERL_SET_INTERP(i) \ 4103 STMT_START { PL_curinterp = (PerlInterpreter*)(i); \ 4104 PERL_SET_NON_tTHX_CONTEXT(i); \ 4105 } STMT_END 4106 #endif 4107 4108 #ifndef PERL_GET_INTERP 4109 # define PERL_GET_INTERP (PL_curinterp) 4110 #endif 4111 4112 #if defined(MULTIPLICITY) && !defined(PERL_GET_THX) 4113 # define PERL_GET_THX ((PerlInterpreter *)PERL_GET_CONTEXT) 4114 # define PERL_SET_THX(t) PERL_SET_CONTEXT(t) 4115 #endif 4116 4117 /* 4118 This replaces the previous %_ "hack" by the "%p" hacks. 4119 All that is required is that the perl source does not 4120 use "%-p" or "%-<number>p" or "%<number>p" formats. 4121 These formats will still work in perl code. 4122 See comments in sv.c for further details. 4123 4124 Robin Barker 2005-07-14 4125 4126 No longer use %1p for VDf = %vd. RMB 2007-10-19 4127 */ 4128 4129 #ifndef SVf_ 4130 # define SVf_(n) "-" STRINGIFY(n) "p" 4131 #endif 4132 4133 #ifndef SVf 4134 # define SVf "-p" 4135 #endif 4136 4137 #ifndef SVf32 4138 # define SVf32 SVf_(32) 4139 #endif 4140 4141 #ifndef SVf256 4142 # define SVf256 SVf_(256) 4143 #endif 4144 4145 #define SVfARG(p) ((void*)(p)) 4146 4147 /* Render an SV as a quoted and escaped string suitable for an error message. 4148 * Only shows the first PERL_QUOTEDPREFIX_LEN characters, and adds ellipses if the 4149 * string is too long. 4150 */ 4151 #ifndef PERL_QUOTEDPREFIX_LEN 4152 # define PERL_QUOTEDPREFIX_LEN 256 4153 #endif 4154 #ifndef SVf_QUOTEDPREFIX 4155 # define SVf_QUOTEDPREFIX "5p" 4156 #endif 4157 4158 /* like %s but runs through the quoted prefix logic */ 4159 #ifndef PVf_QUOTEDPREFIX 4160 # define PVf_QUOTEDPREFIX "1p" 4161 #endif 4162 4163 #ifndef HEKf 4164 # define HEKf "2p" 4165 #endif 4166 4167 #ifndef HEKf_QUOTEDPREFIX 4168 # define HEKf_QUOTEDPREFIX "7p" 4169 #endif 4170 4171 /* Not ideal, but we cannot easily include a number in an already-numeric 4172 * format sequence. */ 4173 #ifndef HEKf256 4174 # define HEKf256 "3p" 4175 #endif 4176 4177 #ifndef HEKf256_QUOTEDPREFIX 4178 # define HEKf256_QUOTEDPREFIX "8p" 4179 #endif 4180 4181 #define HEKfARG(p) ((void*)(p)) 4182 4183 /* Documented in perlguts 4184 * 4185 * %4p and %9p are custom formats for handling UTF8 parameters. 4186 * They only occur when prefixed by specific other formats. 4187 */ 4188 #ifndef UTF8f 4189 # define UTF8f "d%" UVuf "%4p" 4190 #endif 4191 #ifndef UTF8f_QUOTEDPREFIX 4192 # define UTF8f_QUOTEDPREFIX "d%" UVuf "%9p" 4193 #endif 4194 #define UTF8fARG(u,l,p) (int)cBOOL(u), (UV)(l), (void*)(p) 4195 4196 #define PNf UTF8f 4197 #define PNfARG(pn) (int)1, (UV)PadnameLEN(pn), (void *)PadnamePV(pn) 4198 4199 #define HvNAMEf "6p" 4200 #define HvNAMEf_QUOTEDPREFIX "10p" 4201 4202 #define HvNAMEfARG(hv) ((void*)(hv)) 4203 4204 #ifdef PERL_CORE 4205 /* not used; but needed for backward compatibility with XS code? - RMB 4206 =for apidoc_section $io_formats 4207 =for apidoc AmnD|const char *|UVf 4208 4209 Obsolete form of C<UVuf>, which you should convert to instead use 4210 4211 =cut 4212 */ 4213 # undef UVf 4214 #elif !defined(UVf) 4215 # define UVf UVuf 4216 #endif 4217 4218 #if !defined(DEBUGGING) && !defined(NDEBUG) 4219 # define NDEBUG 1 4220 #endif 4221 #include <assert.h> 4222 4223 /* For functions that are marked as __attribute__noreturn__, it's not 4224 appropriate to call return. In either case, include the lint directive. 4225 */ 4226 #ifdef HASATTRIBUTE_NORETURN 4227 # define NORETURN_FUNCTION_END NOT_REACHED; 4228 #else 4229 # define NORETURN_FUNCTION_END NOT_REACHED; return 0 4230 #endif 4231 4232 #ifdef HAS_BUILTIN_EXPECT 4233 # define EXPECT(expr,val) __builtin_expect(expr,val) 4234 #else 4235 # define EXPECT(expr,val) (expr) 4236 #endif 4237 4238 /* 4239 =for apidoc_section $directives 4240 4241 =for apidoc Am||LIKELY|bool expr 4242 4243 Returns the input unchanged, but at the same time it gives a branch prediction 4244 hint to the compiler that this condition is likely to be true. 4245 4246 =for apidoc Am||UNLIKELY|bool expr 4247 4248 Returns the input unchanged, but at the same time it gives a branch prediction 4249 hint to the compiler that this condition is likely to be false. 4250 4251 =cut 4252 */ 4253 #define LIKELY(cond) EXPECT(cBOOL(cond),TRUE) 4254 #define UNLIKELY(cond) EXPECT(cBOOL(cond),FALSE) 4255 4256 #ifdef HAS_BUILTIN_CHOOSE_EXPR 4257 /* placeholder */ 4258 #endif 4259 4260 /* STATIC_ASSERT_DECL/STATIC_ASSERT_STMT are like assert(), but for compile 4261 time invariants. That is, their argument must be a constant expression that 4262 can be verified by the compiler. This expression can contain anything that's 4263 known to the compiler, e.g. #define constants, enums, or sizeof (...). If 4264 the expression evaluates to 0, compilation fails. 4265 Because they generate no runtime code (i.e. their use is "free"), they're 4266 always active, even under non-DEBUGGING builds. 4267 STATIC_ASSERT_DECL expands to a declaration and is suitable for use at 4268 file scope (outside of any function). 4269 STATIC_ASSERT_STMT expands to a statement and is suitable for use inside a 4270 function. 4271 */ 4272 #if (! defined(__IBMC__) || __IBMC__ >= 1210) \ 4273 && (( defined(static_assert) && ( defined(_ISOC11_SOURCE) \ 4274 || (__STDC_VERSION__ - 0) >= 201101L)) \ 4275 || (defined(__cplusplus) && __cplusplus >= 201103L)) 4276 /* XXX static_assert is a macro defined in <assert.h> in C11 or a compiler 4277 builtin in C++11. But IBM XL C V11 does not support _Static_assert, no 4278 matter what <assert.h> says. 4279 */ 4280 # define STATIC_ASSERT_DECL(COND) static_assert(COND, #COND) 4281 #else 4282 /* We use a bit-field instead of an array because gcc accepts 4283 'typedef char x[n]' where n is not a compile-time constant. 4284 We want to enforce constantness. 4285 */ 4286 # define STATIC_ASSERT_2(COND, SUFFIX) \ 4287 typedef struct { \ 4288 unsigned int _static_assertion_failed_##SUFFIX : (COND) ? 1 : -1; \ 4289 } _static_assertion_failed_##SUFFIX PERL_UNUSED_DECL 4290 # define STATIC_ASSERT_1(COND, SUFFIX) STATIC_ASSERT_2(COND, SUFFIX) 4291 # define STATIC_ASSERT_DECL(COND) STATIC_ASSERT_1(COND, __LINE__) 4292 #endif 4293 /* We need this wrapper even in C11 because 'case X: static_assert(...);' is an 4294 error (static_assert is a declaration, and only statements can have labels). 4295 */ 4296 #define STATIC_ASSERT_STMT(COND) STMT_START { STATIC_ASSERT_DECL(COND); } STMT_END 4297 4298 #ifndef __has_builtin 4299 # define __has_builtin(x) 0 /* not a clang style compiler */ 4300 #endif 4301 4302 #ifdef PERL_STACK_OFFSET_SSIZET 4303 typedef SSize_t Stack_off_t; 4304 # define Stack_off_t_MAX SSize_t_MAX 4305 #else 4306 typedef I32 Stack_off_t; 4307 # define Stack_off_t_MAX I32_MAX 4308 #endif 4309 #define PERL_STACK_OFFSET_DEFINED 4310 4311 /* 4312 =for apidoc Am||ASSUME|bool expr 4313 C<ASSUME> is like C<assert()>, but it has a benefit in a release build. It is a 4314 hint to a compiler about a statement of fact in a function call free 4315 expression, which allows the compiler to generate better machine code. In a 4316 debug build, C<ASSUME(x)> is a synonym for C<assert(x)>. C<ASSUME(0)> means the 4317 control path is unreachable. In a for loop, C<ASSUME> can be used to hint that 4318 a loop will run at least X times. C<ASSUME> is based off MSVC's C<__assume> 4319 intrinsic function, see its documents for more details. 4320 4321 =cut 4322 */ 4323 4324 #if __has_builtin(__builtin_unreachable) 4325 # define HAS_BUILTIN_UNREACHABLE 4326 #elif PERL_GCC_VERSION_GE(4,5,0) 4327 # define HAS_BUILTIN_UNREACHABLE 4328 #endif 4329 4330 #ifdef DEBUGGING 4331 # define ASSUME(x) assert(x) 4332 #elif __has_builtin(__builtin_assume) 4333 # if defined(__clang__) || defined(__clang) 4334 # define ASSUME(x) CLANG_DIAG_IGNORE(-Wassume) \ 4335 __builtin_assume (x) \ 4336 CLANG_DIAG_RESTORE 4337 # else 4338 # define ASSUME(x) __builtin_assume(x) 4339 # endif 4340 #elif defined(_MSC_VER) 4341 # define ASSUME(x) __assume(x) 4342 #elif defined(__ARMCC_VERSION) /* untested */ 4343 # define ASSUME(x) __promise(x) 4344 #elif defined(HAS_BUILTIN_UNREACHABLE) 4345 /* Compilers can take the hint from something being unreachable */ 4346 # define ASSUME(x) ((x) ? (void) 0 : __builtin_unreachable()) 4347 #else 4348 /* Not DEBUGGING, so assert() is a no-op, but a random compiler might 4349 * define assert() to its own special optimization token so pass it through 4350 * to C lib as a last resort */ 4351 # define ASSUME(x) assert(x) 4352 #endif 4353 4354 #ifdef HAS_BUILTIN_UNREACHABLE 4355 # define NOT_REACHED \ 4356 STMT_START { \ 4357 ASSUME(!"UNREACHABLE"); __builtin_unreachable(); \ 4358 } STMT_END 4359 # undef HAS_BUILTIN_UNREACHABLE /* Don't leak out this internal symbol */ 4360 #elif ! defined(__GNUC__) && (defined(__sun) || defined(__hpux)) 4361 /* These just complain that NOT_REACHED isn't reached */ 4362 # define NOT_REACHED 4363 #else 4364 # define NOT_REACHED ASSUME(!"UNREACHABLE") 4365 #endif 4366 4367 /* Some unistd.h's give a prototype for pause() even though 4368 HAS_PAUSE ends up undefined. This causes the #define 4369 below to be rejected by the compiler. Sigh. 4370 */ 4371 #ifdef HAS_PAUSE 4372 #define Pause pause 4373 #else 4374 #define Pause() sleep((32767<<16)+32767) 4375 #endif 4376 4377 #ifndef IOCPARM_LEN 4378 # ifdef IOCPARM_MASK 4379 /* on BSDish systems we're safe */ 4380 # define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK) 4381 # elif defined(_IOC_SIZE) && defined(__GLIBC__) 4382 /* on Linux systems we're safe; except when we're not [perl #38223] */ 4383 # define IOCPARM_LEN(x) (_IOC_SIZE(x) < 256 ? 256 : _IOC_SIZE(x)) 4384 # else 4385 /* otherwise guess at what's safe */ 4386 # define IOCPARM_LEN(x) 256 4387 # endif 4388 #endif 4389 4390 #if defined(__CYGWIN__) 4391 /* USEMYBINMODE 4392 * This symbol, if defined, indicates that the program should 4393 * use the routine my_binmode(FILE *fp, char iotype, int mode) to insure 4394 * that a file is in "binary" mode -- that is, that no translation 4395 * of bytes occurs on read or write operations. 4396 */ 4397 # define USEMYBINMODE /**/ 4398 # include <io.h> /* for setmode() prototype */ 4399 # define my_binmode(fp, iotype, mode) \ 4400 cBOOL(PerlLIO_setmode(fileno(fp), mode) != -1) 4401 #endif 4402 4403 #ifdef __CYGWIN__ 4404 void init_os_extras(void); 4405 #endif 4406 4407 #ifdef UNION_ANY_DEFINITION 4408 UNION_ANY_DEFINITION; 4409 #else 4410 union any { 4411 void* any_ptr; 4412 SV* any_sv; 4413 SV** any_svp; 4414 GV* any_gv; 4415 AV* any_av; 4416 HV* any_hv; 4417 OP* any_op; 4418 char* any_pv; 4419 char** any_pvp; 4420 I32 any_i32; 4421 U32 any_u32; 4422 IV any_iv; 4423 UV any_uv; 4424 long any_long; 4425 bool any_bool; 4426 Size_t any_size; 4427 SSize_t any_ssize; 4428 STRLEN any_strlen; 4429 void (*any_dptr) (void*); 4430 void (*any_dxptr) (pTHX_ void*); 4431 }; 4432 #endif 4433 4434 typedef I32 (*filter_t) (pTHX_ int, SV *, int); 4435 4436 #define FILTER_READ(idx, sv, len) filter_read(idx, sv, len) 4437 #define FILTER_DATA(idx) \ 4438 (PL_parser ? AvARRAY(PL_parser->rsfp_filters)[idx] : NULL) 4439 #define FILTER_ISREADER(idx) \ 4440 (PL_parser && PL_parser->rsfp_filters \ 4441 && idx >= AvFILLp(PL_parser->rsfp_filters)) 4442 #define PERL_FILTER_EXISTS(i) \ 4443 (PL_parser && PL_parser->rsfp_filters \ 4444 && (Size_t) (i) < av_count(PL_parser->rsfp_filters)) 4445 4446 #if defined(_AIX) && !defined(_AIX43) 4447 #if defined(USE_REENTRANT) || defined(_REENTRANT) || defined(_THREAD_SAFE) 4448 /* We cannot include <crypt.h> to get the struct crypt_data 4449 * because of setkey prototype problems when threading */ 4450 typedef struct crypt_data { /* straight from /usr/include/crypt.h */ 4451 /* From OSF, Not needed in AIX 4452 char C[28], D[28]; 4453 */ 4454 char E[48]; 4455 char KS[16][48]; 4456 char block[66]; 4457 char iobuf[16]; 4458 } CRYPTD; 4459 #endif /* threading */ 4460 #endif /* AIX */ 4461 4462 #ifndef PERL_CALLCONV 4463 # ifdef __cplusplus 4464 # define PERL_CALLCONV EXTERN_C 4465 # else 4466 # define PERL_CALLCONV 4467 # endif 4468 #endif 4469 #ifndef PERL_CALLCONV_NO_RET 4470 # define PERL_CALLCONV_NO_RET PERL_CALLCONV 4471 #endif 4472 4473 /* PERL_STATIC_NO_RET is supposed to be equivalent to STATIC on builds that 4474 dont have a noreturn as a declaration specifier 4475 */ 4476 #ifndef PERL_STATIC_NO_RET 4477 # define PERL_STATIC_NO_RET STATIC 4478 #endif 4479 4480 /* PERL_STATIC_INLINE_NO_RET is supposed to be equivalent to PERL_STATIC_INLINE 4481 * on builds that dont have a noreturn as a declaration specifier 4482 */ 4483 #ifndef PERL_STATIC_INLINE_NO_RET 4484 # define PERL_STATIC_INLINE_NO_RET PERL_STATIC_INLINE 4485 #endif 4486 4487 #ifndef PERL_STATIC_FORCE_INLINE 4488 # define PERL_STATIC_FORCE_INLINE PERL_STATIC_INLINE 4489 #endif 4490 4491 #ifndef PERL_STATIC_FORCE_INLINE_NO_RET 4492 # define PERL_STATIC_FORCE_INLINE_NO_RET PERL_STATIC_INLINE 4493 #endif 4494 4495 #if !defined(OS2) 4496 # include "iperlsys.h" 4497 #endif 4498 4499 #ifdef __LIBCATAMOUNT__ 4500 #undef HAS_PASSWD /* unixish.h but not unixish enough. */ 4501 #undef HAS_GROUP 4502 #define FAKE_BIT_BUCKET 4503 #endif 4504 4505 /* [perl #22371] Algorithmic Complexity Attack on Perl 5.6.1, 5.8.0. 4506 * Note that the USE_HASH_SEED and similar defines are *NOT* defined by 4507 * Configure, despite their names being similar to other defines like 4508 * USE_ITHREADS. Configure in fact knows nothing about the randomised 4509 * hashes. Therefore to enable/disable the hash randomisation defines 4510 * use the Configure -Accflags=... instead. */ 4511 #if !defined(NO_HASH_SEED) && !defined(USE_HASH_SEED) 4512 # define USE_HASH_SEED 4513 #endif 4514 4515 #include "perly.h" 4516 4517 4518 /* macros to define bit-fields in structs. */ 4519 #ifndef PERL_BITFIELD8 4520 # ifdef HAS_NON_INT_BITFIELDS 4521 # define PERL_BITFIELD8 U8 4522 # else 4523 # define PERL_BITFIELD8 unsigned 4524 # endif 4525 #endif 4526 #ifndef PERL_BITFIELD16 4527 # ifdef HAS_NON_INT_BITFIELDS 4528 # define PERL_BITFIELD16 U16 4529 # else 4530 # define PERL_BITFIELD16 unsigned 4531 # endif 4532 #endif 4533 #ifndef PERL_BITFIELD32 4534 # ifdef HAS_NON_INT_BITFIELDS 4535 # define PERL_BITFIELD32 U32 4536 # else 4537 # define PERL_BITFIELD32 unsigned 4538 # endif 4539 #endif 4540 4541 #include "sv.h" 4542 #include "regexp.h" 4543 #include "util.h" 4544 #include "form.h" 4545 #include "gv.h" 4546 #include "pad.h" 4547 #include "cv.h" 4548 #include "opnames.h" 4549 #include "op.h" 4550 #include "hv.h" 4551 #include "cop.h" 4552 #include "av.h" 4553 #include "mg.h" 4554 #include "scope.h" 4555 #include "warnings.h" 4556 #include "utf8.h" 4557 4558 /* these would be in doio.h if there was such a file */ 4559 #define my_stat() my_stat_flags(SV_GMAGIC) 4560 #define my_lstat() my_lstat_flags(SV_GMAGIC) 4561 4562 /* defined in sv.c, but also used in [ach]v.c */ 4563 #undef _XPV_HEAD 4564 #undef _XPVMG_HEAD 4565 #undef _XPVCV_COMMON 4566 4567 #include "parser.h" 4568 4569 typedef struct magic_state MGS; /* struct magic_state defined in mg.c */ 4570 4571 #if defined(PERL_IN_REGEX_ENGINE) || defined(PERL_EXT_RE_BUILD) 4572 4573 /* These have to be predeclared, as they are used in proto.h which is #included 4574 * before their definitions in regcomp.h. */ 4575 4576 struct scan_data_t; 4577 typedef struct regnode_charclass regnode_charclass; 4578 4579 /* A hopefully less confusing name. The sub-classes are all Posix classes only 4580 * used under /l matching */ 4581 typedef struct regnode_charclass_posixl regnode_charclass_class; 4582 typedef struct regnode_charclass_posixl regnode_charclass_posixl; 4583 4584 typedef struct regnode_ssc regnode_ssc; 4585 typedef struct RExC_state_t RExC_state_t; 4586 struct _reg_trie_data; 4587 typedef struct scan_data_t scan_data_t; 4588 4589 #endif 4590 4591 struct ptr_tbl_ent { 4592 struct ptr_tbl_ent* next; 4593 const void* oldval; 4594 void* newval; 4595 }; 4596 4597 struct ptr_tbl { 4598 struct ptr_tbl_ent** tbl_ary; 4599 UV tbl_max; 4600 UV tbl_items; 4601 struct ptr_tbl_arena *tbl_arena; 4602 struct ptr_tbl_ent *tbl_arena_next; 4603 struct ptr_tbl_ent *tbl_arena_end; 4604 }; 4605 4606 #if defined(htonl) && !defined(HAS_HTONL) 4607 #define HAS_HTONL 4608 #endif 4609 #if defined(htons) && !defined(HAS_HTONS) 4610 #define HAS_HTONS 4611 #endif 4612 #if defined(ntohl) && !defined(HAS_NTOHL) 4613 #define HAS_NTOHL 4614 #endif 4615 #if defined(ntohs) && !defined(HAS_NTOHS) 4616 #define HAS_NTOHS 4617 #endif 4618 #ifndef HAS_HTONL 4619 #define HAS_HTONS 4620 #define HAS_HTONL 4621 #define HAS_NTOHS 4622 #define HAS_NTOHL 4623 # if (BYTEORDER & 0xffff) == 0x4321 4624 /* Big endian system, so ntohl, ntohs, htonl and htons do not need to 4625 re-order their values. However, to behave identically to the alternative 4626 implementations, they should truncate to the correct size. */ 4627 # define ntohl(x) ((x)&0xFFFFFFFF) 4628 # define htonl(x) ntohl(x) 4629 # define ntohs(x) ((x)&0xFFFF) 4630 # define htons(x) ntohs(x) 4631 # elif BYTEORDER == 0x1234 || BYTEORDER == 0x12345678 4632 4633 /* Note that we can't straight out declare our own htonl and htons because 4634 the Win32 build process forcibly undefines HAS_HTONL etc for its miniperl, 4635 to avoid the overhead of initialising the socket subsystem, but the headers 4636 that *declare* the various functions are still seen. If we declare our own 4637 htonl etc they will clash with the declarations in the Win32 headers. */ 4638 4639 PERL_STATIC_INLINE U32 4640 my_swap32(const U32 x) { 4641 return ((x & 0xFF) << 24) | ((x >> 24) & 0xFF) 4642 | ((x & 0x0000FF00) << 8) | ((x & 0x00FF0000) >> 8); 4643 } 4644 4645 PERL_STATIC_INLINE U16 4646 my_swap16(const U16 x) { 4647 return ((x & 0xFF) << 8) | ((x >> 8) & 0xFF); 4648 } 4649 4650 # define htonl(x) my_swap32(x) 4651 # define ntohl(x) my_swap32(x) 4652 # define ntohs(x) my_swap16(x) 4653 # define htons(x) my_swap16(x) 4654 # else 4655 # error "Unsupported byteorder" 4656 /* The C pre-processor doesn't let us return the value of BYTEORDER as part of 4657 the error message. Please check the value of the macro BYTEORDER, as defined 4658 in config.h. The values of BYTEORDER we expect are 4659 4660 big endian little endian 4661 32 bit 0x4321 0x1234 4662 64 bit 0x87654321 0x12345678 4663 4664 If you have a system with a different byte order, please see 4665 pod/perlhack.pod for how to submit a patch to add supporting code. 4666 */ 4667 # endif 4668 #endif 4669 4670 /* 4671 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'. 4672 * -DWS 4673 */ 4674 #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678 4675 /* Little endian system, so vtohl, vtohs, htovl and htovs do not need to 4676 re-order their values. However, to behave identically to the alternative 4677 implementations, they should truncate to the correct size. */ 4678 # define vtohl(x) ((x)&0xFFFFFFFF) 4679 # define vtohs(x) ((x)&0xFFFF) 4680 # define htovl(x) vtohl(x) 4681 # define htovs(x) vtohs(x) 4682 #elif BYTEORDER == 0x4321 || BYTEORDER == 0x87654321 4683 # define vtohl(x) ((((x)&0xFF)<<24) \ 4684 +(((x)>>24)&0xFF) \ 4685 +(((x)&0x0000FF00)<<8) \ 4686 +(((x)&0x00FF0000)>>8) ) 4687 # define vtohs(x) ((((x)&0xFF)<<8) + (((x)>>8)&0xFF)) 4688 # define htovl(x) vtohl(x) 4689 # define htovs(x) vtohs(x) 4690 #else 4691 # error "Unsupported byteorder" 4692 /* If you have need for current perl on PDP-11 or similar, and can help test 4693 that blead keeps working on a mixed-endian system, then see 4694 pod/perlhack.pod for how to submit patches to things working again. */ 4695 #endif 4696 4697 /* *MAX Plus 1. A floating point value. 4698 Hopefully expressed in a way that dodgy floating point can't mess up. 4699 >> 2 rather than 1, so that value is safely less than I32_MAX after 1 4700 is added to it 4701 May find that some broken compiler will want the value cast to I32. 4702 [after the shift, as signed >> may not be as secure as unsigned >>] 4703 */ 4704 #define I32_MAX_P1 (2.0 * (1 + (((U32)I32_MAX) >> 1))) 4705 #define U32_MAX_P1 (4.0 * (1 + ((U32_MAX) >> 2))) 4706 /* For compilers that can't correctly cast NVs over 0x7FFFFFFF (or 4707 0x7FFFFFFFFFFFFFFF) to an unsigned integer. In the future, sizeof(UV) 4708 may be greater than sizeof(IV), so don't assume that half max UV is max IV. 4709 */ 4710 #define U32_MAX_P1_HALF (2.0 * (1 + ((U32_MAX) >> 2))) 4711 4712 #define UV_MAX_P1 (4.0 * (1 + ((UV_MAX) >> 2))) 4713 #define IV_MAX_P1 (2.0 * (1 + (((UV)IV_MAX) >> 1))) 4714 #define UV_MAX_P1_HALF (2.0 * (1 + ((UV_MAX) >> 2))) 4715 4716 /* This may look like unnecessary jumping through hoops, but converting 4717 out of range floating point values to integers *is* undefined behaviour, 4718 and it is starting to bite. 4719 4720 =for apidoc_section $casting 4721 =for apidoc Am|I32|I_32|NV what 4722 Cast an NV to I32 while avoiding undefined C behavior 4723 4724 =for apidoc Am|U32|U_32|NV what 4725 Cast an NV to U32 while avoiding undefined C behavior 4726 4727 =for apidoc Am|IV|I_V|NV what 4728 Cast an NV to IV while avoiding undefined C behavior 4729 4730 =for apidoc Am|UV|U_V|NV what 4731 Cast an NV to UV while avoiding undefined C behavior 4732 4733 =cut 4734 */ 4735 #ifndef CAST_INLINE 4736 #define I_32(what) (cast_i32((NV)(what))) 4737 #define U_32(what) (cast_ulong((NV)(what))) 4738 #define I_V(what) (cast_iv((NV)(what))) 4739 #define U_V(what) (cast_uv((NV)(what))) 4740 #else 4741 #define I_32(n) ((n) < I32_MAX_P1 ? ((n) < I32_MIN ? I32_MIN : (I32) (n)) \ 4742 : ((n) < U32_MAX_P1 ? (I32)(U32) (n) \ 4743 : ((n) > 0 ? (I32) U32_MAX : 0 /* NaN */))) 4744 #define U_32(n) ((n) < 0.0 ? ((n) < I32_MIN ? (UV) I32_MIN : (U32)(I32) (n)) \ 4745 : ((n) < U32_MAX_P1 ? (U32) (n) \ 4746 : ((n) > 0 ? U32_MAX : 0 /* NaN */))) 4747 #define I_V(n) (LIKELY((n) < IV_MAX_P1) ? (UNLIKELY((n) < IV_MIN) ? IV_MIN : (IV) (n)) \ 4748 : (LIKELY((n) < UV_MAX_P1) ? (IV)(UV) (n) \ 4749 : ((n) > 0 ? (IV)UV_MAX : 0 /* NaN */))) 4750 #define U_V(n) ((n) < 0.0 ? (UNLIKELY((n) < IV_MIN) ? (UV) IV_MIN : (UV)(IV) (n)) \ 4751 : (LIKELY((n) < UV_MAX_P1) ? (UV) (n) \ 4752 : ((n) > 0 ? UV_MAX : 0 /* NaN */))) 4753 #endif 4754 4755 #define U_S(what) ((U16)U_32(what)) 4756 #define U_I(what) ((unsigned int)U_32(what)) 4757 #define U_L(what) U_32(what) 4758 4759 /* 4760 =for apidoc_section $integer 4761 =for apidoc Amn|IV|IV_MAX 4762 The largest signed integer that fits in an IV on this platform. 4763 4764 =for apidoc Amn|IV|IV_MIN 4765 The negative signed integer furthest away from 0 that fits in an IV on this 4766 platform. 4767 4768 =for apidoc Amn|UV|UV_MAX 4769 The largest unsigned integer that fits in a UV on this platform. 4770 4771 =for apidoc Amn|UV|UV_MIN 4772 The smallest unsigned integer that fits in a UV on this platform. It should 4773 equal zero. 4774 4775 =cut 4776 */ 4777 4778 #ifdef HAS_SIGNBIT 4779 # ifndef Perl_signbit 4780 # define Perl_signbit signbit 4781 # endif 4782 #endif 4783 4784 /* These do not care about the fractional part, only about the range. */ 4785 #define NV_WITHIN_IV(nv) (I_V(nv) >= IV_MIN && I_V(nv) <= IV_MAX) 4786 #define NV_WITHIN_UV(nv) ((nv)>=0.0 && U_V(nv) >= UV_MIN && U_V(nv) <= UV_MAX) 4787 4788 /* Used with UV/IV arguments: */ 4789 /* XXXX: need to speed it up */ 4790 #define CLUMP_2UV(iv) ((iv) < 0 ? 0 : (UV)(iv)) 4791 #define CLUMP_2IV(uv) ((uv) > (UV)IV_MAX ? IV_MAX : (IV)(uv)) 4792 4793 #ifndef MAXSYSFD 4794 # define MAXSYSFD 2 4795 #endif 4796 4797 #ifndef __cplusplus 4798 #if !defined(WIN32) 4799 Uid_t getuid (void); 4800 Uid_t geteuid (void); 4801 Gid_t getgid (void); 4802 Gid_t getegid (void); 4803 #endif 4804 #endif 4805 4806 #ifndef Perl_debug_log 4807 # define Perl_debug_log PerlIO_stderr() 4808 #endif 4809 4810 #ifndef Perl_error_log 4811 # define Perl_error_log (PL_stderrgv \ 4812 && isGV(PL_stderrgv) \ 4813 && GvIOp(PL_stderrgv) \ 4814 && IoOFP(GvIOp(PL_stderrgv)) \ 4815 ? IoOFP(GvIOp(PL_stderrgv)) \ 4816 : PerlIO_stderr()) 4817 #endif 4818 4819 4820 #define DEBUG_p_FLAG 0x00000001 /* 1 */ 4821 #define DEBUG_s_FLAG 0x00000002 /* 2 */ 4822 #define DEBUG_l_FLAG 0x00000004 /* 4 */ 4823 #define DEBUG_t_FLAG 0x00000008 /* 8 */ 4824 #define DEBUG_o_FLAG 0x00000010 /* 16 */ 4825 #define DEBUG_c_FLAG 0x00000020 /* 32 */ 4826 #define DEBUG_P_FLAG 0x00000040 /* 64 */ 4827 #define DEBUG_m_FLAG 0x00000080 /* 128 */ 4828 #define DEBUG_f_FLAG 0x00000100 /* 256 */ 4829 #define DEBUG_r_FLAG 0x00000200 /* 512 */ 4830 #define DEBUG_x_FLAG 0x00000400 /* 1024 */ 4831 #define DEBUG_u_FLAG 0x00000800 /* 2048 */ 4832 /* U is reserved for Unofficial, exploratory hacking */ 4833 #define DEBUG_U_FLAG 0x00001000 /* 4096 */ 4834 #define DEBUG_h_FLAG 0x00002000 /* 8192 */ 4835 #define DEBUG_X_FLAG 0x00004000 /* 16384 */ 4836 #define DEBUG_D_FLAG 0x00008000 /* 32768 */ 4837 #define DEBUG_S_FLAG 0x00010000 /* 65536 */ 4838 #define DEBUG_T_FLAG 0x00020000 /* 131072 */ 4839 #define DEBUG_R_FLAG 0x00040000 /* 262144 */ 4840 #define DEBUG_J_FLAG 0x00080000 /* 524288 */ 4841 #define DEBUG_v_FLAG 0x00100000 /*1048576 */ 4842 #define DEBUG_C_FLAG 0x00200000 /*2097152 */ 4843 #define DEBUG_A_FLAG 0x00400000 /*4194304 */ 4844 #define DEBUG_q_FLAG 0x00800000 /*8388608 */ 4845 #define DEBUG_M_FLAG 0x01000000 /*16777216*/ 4846 #define DEBUG_B_FLAG 0x02000000 /*33554432*/ 4847 #define DEBUG_L_FLAG 0x04000000 /*67108864*/ 4848 #define DEBUG_i_FLAG 0x08000000 /*134217728*/ 4849 #define DEBUG_y_FLAG 0x10000000 /*268435456*/ 4850 #define DEBUG_MASK 0x1FFFEFFF /* mask of all the standard flags */ 4851 4852 #define DEBUG_DB_RECURSE_FLAG 0x40000000 4853 #define DEBUG_TOP_FLAG 0x80000000 /* -D was given --> PL_debug |= FLAG */ 4854 4855 /* Both flags have to be set */ 4856 # define DEBUG_BOTH_FLAGS_TEST_(flag1, flag2) \ 4857 UNLIKELY((PL_debug & ((flag1)|(flag2))) \ 4858 == ((flag1)|(flag2))) 4859 4860 # define DEBUG_p_TEST_ UNLIKELY(PL_debug & DEBUG_p_FLAG) 4861 # define DEBUG_s_TEST_ UNLIKELY(PL_debug & DEBUG_s_FLAG) 4862 # define DEBUG_l_TEST_ UNLIKELY(PL_debug & DEBUG_l_FLAG) 4863 # define DEBUG_t_TEST_ UNLIKELY(PL_debug & DEBUG_t_FLAG) 4864 # define DEBUG_o_TEST_ UNLIKELY(PL_debug & DEBUG_o_FLAG) 4865 # define DEBUG_c_TEST_ UNLIKELY(PL_debug & DEBUG_c_FLAG) 4866 # define DEBUG_P_TEST_ UNLIKELY(PL_debug & DEBUG_P_FLAG) 4867 # define DEBUG_m_TEST_ UNLIKELY(PL_debug & DEBUG_m_FLAG) 4868 # define DEBUG_f_TEST_ UNLIKELY(PL_debug & DEBUG_f_FLAG) 4869 # define DEBUG_r_TEST_ UNLIKELY(PL_debug & DEBUG_r_FLAG) 4870 # define DEBUG_x_TEST_ UNLIKELY(PL_debug & DEBUG_x_FLAG) 4871 # define DEBUG_u_TEST_ UNLIKELY(PL_debug & DEBUG_u_FLAG) 4872 # define DEBUG_U_TEST_ UNLIKELY(PL_debug & DEBUG_U_FLAG) 4873 # define DEBUG_h_TEST_ UNLIKELY(PL_debug & DEBUG_h_FLAG) 4874 # define DEBUG_X_TEST_ UNLIKELY(PL_debug & DEBUG_X_FLAG) 4875 # define DEBUG_D_TEST_ UNLIKELY(PL_debug & DEBUG_D_FLAG) 4876 # define DEBUG_S_TEST_ UNLIKELY(PL_debug & DEBUG_S_FLAG) 4877 # define DEBUG_T_TEST_ UNLIKELY(PL_debug & DEBUG_T_FLAG) 4878 # define DEBUG_R_TEST_ UNLIKELY(PL_debug & DEBUG_R_FLAG) 4879 # define DEBUG_J_TEST_ UNLIKELY(PL_debug & DEBUG_J_FLAG) 4880 # define DEBUG_v_TEST_ UNLIKELY(PL_debug & DEBUG_v_FLAG) 4881 # define DEBUG_C_TEST_ UNLIKELY(PL_debug & DEBUG_C_FLAG) 4882 # define DEBUG_A_TEST_ UNLIKELY(PL_debug & DEBUG_A_FLAG) 4883 # define DEBUG_q_TEST_ UNLIKELY(PL_debug & DEBUG_q_FLAG) 4884 # define DEBUG_M_TEST_ UNLIKELY(PL_debug & DEBUG_M_FLAG) 4885 # define DEBUG_B_TEST_ UNLIKELY(PL_debug & DEBUG_B_FLAG) 4886 4887 /* Locale initialization comes earlier than PL_debug gets set, 4888 * DEBUG_LOCALE_INITIALIZATION_, if defined, will be set early enough */ 4889 # ifndef DEBUG_LOCALE_INITIALIZATION_ 4890 # define DEBUG_LOCALE_INITIALIZATION_ 0 4891 # endif 4892 # define DEBUG_L_TEST_ \ 4893 ( UNLIKELY(DEBUG_LOCALE_INITIALIZATION_) \ 4894 || UNLIKELY(PL_debug & DEBUG_L_FLAG)) 4895 # define DEBUG_Lv_TEST_ \ 4896 ( UNLIKELY(DEBUG_LOCALE_INITIALIZATION_) \ 4897 || UNLIKELY(DEBUG_BOTH_FLAGS_TEST_(DEBUG_L_FLAG, DEBUG_v_FLAG))) 4898 # define DEBUG_i_TEST_ UNLIKELY(PL_debug & DEBUG_i_FLAG) 4899 # define DEBUG_y_TEST_ UNLIKELY(PL_debug & DEBUG_y_FLAG) 4900 # define DEBUG_Xv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_X_FLAG, DEBUG_v_FLAG) 4901 # define DEBUG_Uv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_U_FLAG, DEBUG_v_FLAG) 4902 # define DEBUG_Pv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_P_FLAG, DEBUG_v_FLAG) 4903 # define DEBUG_yv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_y_FLAG, DEBUG_v_FLAG) 4904 4905 #ifdef DEBUGGING 4906 4907 # define DEBUG_p_TEST DEBUG_p_TEST_ 4908 # define DEBUG_s_TEST DEBUG_s_TEST_ 4909 # define DEBUG_l_TEST DEBUG_l_TEST_ 4910 # define DEBUG_t_TEST DEBUG_t_TEST_ 4911 # define DEBUG_o_TEST DEBUG_o_TEST_ 4912 # define DEBUG_c_TEST DEBUG_c_TEST_ 4913 # define DEBUG_P_TEST DEBUG_P_TEST_ 4914 # define DEBUG_m_TEST DEBUG_m_TEST_ 4915 # define DEBUG_f_TEST DEBUG_f_TEST_ 4916 # define DEBUG_r_TEST DEBUG_r_TEST_ 4917 # define DEBUG_x_TEST DEBUG_x_TEST_ 4918 # define DEBUG_u_TEST DEBUG_u_TEST_ 4919 # define DEBUG_U_TEST DEBUG_U_TEST_ 4920 # define DEBUG_h_TEST DEBUG_h_TEST_ 4921 # define DEBUG_X_TEST DEBUG_X_TEST_ 4922 # define DEBUG_D_TEST DEBUG_D_TEST_ 4923 # define DEBUG_S_TEST DEBUG_S_TEST_ 4924 # define DEBUG_T_TEST DEBUG_T_TEST_ 4925 # define DEBUG_R_TEST DEBUG_R_TEST_ 4926 # define DEBUG_J_TEST DEBUG_J_TEST_ 4927 # define DEBUG_v_TEST DEBUG_v_TEST_ 4928 # define DEBUG_C_TEST DEBUG_C_TEST_ 4929 # define DEBUG_A_TEST DEBUG_A_TEST_ 4930 # define DEBUG_q_TEST DEBUG_q_TEST_ 4931 # define DEBUG_M_TEST DEBUG_M_TEST_ 4932 # define DEBUG_B_TEST DEBUG_B_TEST_ 4933 # define DEBUG_L_TEST DEBUG_L_TEST_ 4934 # define DEBUG_i_TEST DEBUG_i_TEST_ 4935 # define DEBUG_y_TEST DEBUG_y_TEST_ 4936 # define DEBUG_Xv_TEST DEBUG_Xv_TEST_ 4937 # define DEBUG_Uv_TEST DEBUG_Uv_TEST_ 4938 # define DEBUG_Pv_TEST DEBUG_Pv_TEST_ 4939 # define DEBUG_Lv_TEST DEBUG_Lv_TEST_ 4940 # define DEBUG_yv_TEST DEBUG_yv_TEST_ 4941 4942 # define PERL_DEB(a) a 4943 # define PERL_DEB2(a,b) a 4944 # define PERL_DEBUG(a) if (PL_debug) a 4945 # define DEBUG_p(a) if (DEBUG_p_TEST) a 4946 # define DEBUG_s(a) if (DEBUG_s_TEST) a 4947 # define DEBUG_l(a) if (DEBUG_l_TEST) a 4948 # define DEBUG_t(a) if (DEBUG_t_TEST) a 4949 # define DEBUG_o(a) if (DEBUG_o_TEST) a 4950 # define DEBUG_c(a) if (DEBUG_c_TEST) a 4951 # define DEBUG_P(a) if (DEBUG_P_TEST) a 4952 4953 /* Temporarily turn off memory debugging in case the a 4954 * does memory allocation, either directly or indirectly. */ 4955 # define DEBUG_m(a) \ 4956 STMT_START { \ 4957 if (PERL_GET_INTERP) { \ 4958 dTHX; \ 4959 if (DEBUG_m_TEST) { \ 4960 PL_debug &= ~DEBUG_m_FLAG; \ 4961 a; \ 4962 PL_debug |= DEBUG_m_FLAG; \ 4963 } \ 4964 } \ 4965 } STMT_END 4966 4967 /* These allow you to customize your debugging output for specialized, 4968 * generally temporary ad-hoc purposes. For example, if you need 'errno' 4969 * preserved, you can add definitions to these macros (either in this file for 4970 * the whole program, or before the #include "perl.h" in a particular .c file 4971 * you're trying to debug) and recompile: 4972 * 4973 * #define DEBUG_PRE_STMTS dSAVE_ERRNO; 4974 * #define DEBUG_POST_STMTS RESTORE_ERRNO; 4975 * 4976 * Other potential things include displaying timestamps, location information, 4977 * which thread, etc. Here's an example with both errno and location info: 4978 * 4979 * #define DEBUG_PRE_STMTS dSAVE_ERRNO; \ 4980 * PerlIO_printf(Perl_debug_log, "%s:%d: ", __FILE__, __LINE__); 4981 * #define DEBUG_POST RESTORE_ERRNO; 4982 * 4983 * All DEBUG statements in the compiled scope will have these extra statements 4984 * compiled in; they will be executed only for the DEBUG statements whose flags 4985 * are turned on. 4986 */ 4987 #ifndef DEBUG_PRE_STMTS 4988 # define DEBUG_PRE_STMTS 4989 #endif 4990 #ifndef DEBUG_POST_STMTS 4991 # define DEBUG_POST_STMTS 4992 #endif 4993 4994 # define DEBUG__(t, a) \ 4995 STMT_START { \ 4996 if (t) { \ 4997 DEBUG_PRE_STMTS a; DEBUG_POST_STMTS \ 4998 } \ 4999 } STMT_END 5000 5001 # define DEBUG_f(a) DEBUG__(DEBUG_f_TEST, a) 5002 5003 /* For re_comp.c, re_exec.c, assume -Dr has been specified */ 5004 # ifdef PERL_EXT_RE_BUILD 5005 # define DEBUG_r(a) STMT_START { \ 5006 DEBUG_PRE_STMTS a; DEBUG_POST_STMTS \ 5007 } STMT_END; 5008 # else 5009 # define DEBUG_r(a) DEBUG__(DEBUG_r_TEST, a) 5010 # endif /* PERL_EXT_RE_BUILD */ 5011 5012 # define DEBUG_x(a) DEBUG__(DEBUG_x_TEST, a) 5013 # define DEBUG_u(a) DEBUG__(DEBUG_u_TEST, a) 5014 # define DEBUG_U(a) DEBUG__(DEBUG_U_TEST, a) 5015 # define DEBUG_X(a) DEBUG__(DEBUG_X_TEST, a) 5016 # define DEBUG_D(a) DEBUG__(DEBUG_D_TEST, a) 5017 # define DEBUG_Xv(a) DEBUG__(DEBUG_Xv_TEST, a) 5018 # define DEBUG_Uv(a) DEBUG__(DEBUG_Uv_TEST, a) 5019 # define DEBUG_Pv(a) DEBUG__(DEBUG_Pv_TEST, a) 5020 # define DEBUG_Lv(a) DEBUG__(DEBUG_Lv_TEST, a) 5021 # define DEBUG_yv(a) DEBUG__(DEBUG_yv_TEST, a) 5022 5023 # define DEBUG_S(a) DEBUG__(DEBUG_S_TEST, a) 5024 # define DEBUG_T(a) DEBUG__(DEBUG_T_TEST, a) 5025 # define DEBUG_R(a) DEBUG__(DEBUG_R_TEST, a) 5026 # define DEBUG_v(a) DEBUG__(DEBUG_v_TEST, a) 5027 # define DEBUG_C(a) DEBUG__(DEBUG_C_TEST, a) 5028 # define DEBUG_A(a) DEBUG__(DEBUG_A_TEST, a) 5029 # define DEBUG_q(a) DEBUG__(DEBUG_q_TEST, a) 5030 # define DEBUG_M(a) DEBUG__(DEBUG_M_TEST, a) 5031 # define DEBUG_B(a) DEBUG__(DEBUG_B_TEST, a) 5032 # define DEBUG_L(a) DEBUG__(DEBUG_L_TEST, a) 5033 # define DEBUG_i(a) DEBUG__(DEBUG_i_TEST, a) 5034 # define DEBUG_y(a) DEBUG__(DEBUG_y_TEST, a) 5035 5036 #else /* ! DEBUGGING below */ 5037 5038 # define DEBUG_p_TEST (0) 5039 # define DEBUG_s_TEST (0) 5040 # define DEBUG_l_TEST (0) 5041 # define DEBUG_t_TEST (0) 5042 # define DEBUG_o_TEST (0) 5043 # define DEBUG_c_TEST (0) 5044 # define DEBUG_P_TEST (0) 5045 # define DEBUG_m_TEST (0) 5046 # define DEBUG_f_TEST (0) 5047 # define DEBUG_r_TEST (0) 5048 # define DEBUG_x_TEST (0) 5049 # define DEBUG_u_TEST (0) 5050 # define DEBUG_U_TEST (0) 5051 # define DEBUG_h_TEST (0) 5052 # define DEBUG_X_TEST (0) 5053 # define DEBUG_D_TEST (0) 5054 # define DEBUG_S_TEST (0) 5055 # define DEBUG_T_TEST (0) 5056 # define DEBUG_R_TEST (0) 5057 # define DEBUG_J_TEST (0) 5058 # define DEBUG_v_TEST (0) 5059 # define DEBUG_C_TEST (0) 5060 # define DEBUG_A_TEST (0) 5061 # define DEBUG_q_TEST (0) 5062 # define DEBUG_M_TEST (0) 5063 # define DEBUG_B_TEST (0) 5064 # define DEBUG_L_TEST (0) 5065 # define DEBUG_i_TEST (0) 5066 # define DEBUG_y_TEST (0) 5067 # define DEBUG_Xv_TEST (0) 5068 # define DEBUG_Uv_TEST (0) 5069 # define DEBUG_Pv_TEST (0) 5070 # define DEBUG_Lv_TEST (0) 5071 # define DEBUG_yv_TEST (0) 5072 5073 # define PERL_DEB(a) 5074 # define PERL_DEB2(a,b) b 5075 # define PERL_DEBUG(a) 5076 # define DEBUG_p(a) 5077 # define DEBUG_s(a) 5078 # define DEBUG_l(a) 5079 # define DEBUG_t(a) 5080 # define DEBUG_o(a) 5081 # define DEBUG_c(a) 5082 # define DEBUG_P(a) 5083 # define DEBUG_m(a) 5084 # define DEBUG_f(a) 5085 # define DEBUG_r(a) 5086 # define DEBUG_x(a) 5087 # define DEBUG_u(a) 5088 # define DEBUG_U(a) 5089 # define DEBUG_X(a) 5090 # define DEBUG_D(a) 5091 # define DEBUG_S(a) 5092 # define DEBUG_T(a) 5093 # define DEBUG_R(a) 5094 # define DEBUG_v(a) 5095 # define DEBUG_C(a) 5096 # define DEBUG_A(a) 5097 # define DEBUG_q(a) 5098 # define DEBUG_M(a) 5099 # define DEBUG_B(a) 5100 # define DEBUG_L(a) 5101 # define DEBUG_i(a) 5102 # define DEBUG_y(a) 5103 # define DEBUG_Xv(a) 5104 # define DEBUG_Uv(a) 5105 # define DEBUG_Pv(a) 5106 # define DEBUG_Lv(a) 5107 # define DEBUG_yv(a) 5108 #endif /* DEBUGGING */ 5109 5110 5111 #define DEBUG_SCOPE(where) \ 5112 DEBUG_l( \ 5113 Perl_deb(aTHX_ "%s scope %ld (savestack=%ld) at %s:%d\n", \ 5114 where, (long)PL_scopestack_ix, (long)PL_savestack_ix, \ 5115 __FILE__, __LINE__)); 5116 5117 /* Keep the old croak based assert for those who want it, and as a fallback if 5118 the platform is so heretically non-ANSI that it can't assert. */ 5119 5120 #define Perl_assert(what) PERL_DEB2( \ 5121 ((what) ? ((void) 0) : \ 5122 (Perl_croak_nocontext("Assertion %s failed: file \"" __FILE__ \ 5123 "\", line %d", STRINGIFY(what), __LINE__), \ 5124 (void) 0)), ((void)0)) 5125 5126 /* assert() gets defined if DEBUGGING. 5127 * If no DEBUGGING, the <assert.h> has not been included. */ 5128 #ifndef assert 5129 # define assert(what) Perl_assert(what) 5130 #endif 5131 #ifdef DEBUGGING 5132 # define assert_(what) assert(what), 5133 #else 5134 # define assert_(what) 5135 #endif 5136 5137 struct ufuncs { 5138 I32 (*uf_val)(pTHX_ IV, SV*); 5139 I32 (*uf_set)(pTHX_ IV, SV*); 5140 IV uf_index; 5141 }; 5142 5143 /* In pre-5.7-Perls the PERL_MAGIC_uvar magic didn't get the thread context. 5144 * XS code wanting to be backward compatible can do something 5145 * like the following: 5146 5147 #ifndef PERL_MG_UFUNC 5148 #define PERL_MG_UFUNC(name,ix,sv) I32 name(IV ix, SV *sv) 5149 #endif 5150 5151 static PERL_MG_UFUNC(foo_get, index, val) 5152 { 5153 sv_setsv(val, ...); 5154 return TRUE; 5155 } 5156 5157 -- Doug MacEachern 5158 5159 */ 5160 5161 #ifndef PERL_MG_UFUNC 5162 #define PERL_MG_UFUNC(name,ix,sv) I32 name(pTHX_ IV ix, SV *sv) 5163 #endif 5164 5165 #include <math.h> 5166 #ifdef __VMS 5167 /* isfinite and others are here rather than in math.h as C99 stipulates */ 5168 # include <fp.h> 5169 #endif 5170 5171 #ifndef __cplusplus 5172 # if !defined(WIN32) && !defined(VMS) 5173 #ifndef crypt 5174 char *crypt (const char*, const char*); 5175 #endif 5176 # endif /* !WIN32 */ 5177 # ifndef WIN32 5178 # ifndef getlogin 5179 char *getlogin (void); 5180 # endif 5181 # endif /* !WIN32 */ 5182 #endif /* !__cplusplus */ 5183 5184 /* Fixme on VMS. This needs to be a run-time, not build time options */ 5185 /* Also rename() is affected by this */ 5186 #ifdef UNLINK_ALL_VERSIONS /* Currently only makes sense for VMS */ 5187 #define UNLINK unlnk 5188 I32 unlnk (pTHX_ const char*); 5189 #else 5190 #define UNLINK PerlLIO_unlink 5191 #endif 5192 5193 /* some versions of glibc are missing the setresuid() proto */ 5194 #if defined(HAS_SETRESUID) && !defined(HAS_SETRESUID_PROTO) 5195 int setresuid(uid_t ruid, uid_t euid, uid_t suid); 5196 #endif 5197 /* some versions of glibc are missing the setresgid() proto */ 5198 #if defined(HAS_SETRESGID) && !defined(HAS_SETRESGID_PROTO) 5199 int setresgid(gid_t rgid, gid_t egid, gid_t sgid); 5200 #endif 5201 5202 #ifndef HAS_SETREUID 5203 # ifdef HAS_SETRESUID 5204 # define setreuid(r,e) setresuid(r,e,(Uid_t)-1) 5205 # define HAS_SETREUID 5206 # endif 5207 #endif 5208 #ifndef HAS_SETREGID 5209 # ifdef HAS_SETRESGID 5210 # define setregid(r,e) setresgid(r,e,(Gid_t)-1) 5211 # define HAS_SETREGID 5212 # endif 5213 #endif 5214 5215 /* Sighandler_t defined in iperlsys.h */ 5216 5217 #ifdef HAS_SIGACTION 5218 typedef struct sigaction Sigsave_t; 5219 #else 5220 typedef Sighandler_t Sigsave_t; 5221 #endif 5222 5223 #define SCAN_DEF 0 5224 #define SCAN_TR 1 5225 #define SCAN_REPL 2 5226 5227 #if defined DEBUGGING || defined PERL_USE_HWM 5228 # ifndef register 5229 # define register 5230 # endif 5231 # define RUNOPS_DEFAULT Perl_runops_debug 5232 #else 5233 # define RUNOPS_DEFAULT Perl_runops_standard 5234 #endif 5235 5236 #if defined(USE_PERLIO) 5237 EXTERN_C void PerlIO_teardown(void); 5238 # ifdef USE_THREADS 5239 # define PERLIO_INIT MUTEX_INIT(&PL_perlio_mutex) 5240 # define PERLIO_TERM \ 5241 STMT_START { \ 5242 PerlIO_teardown(); \ 5243 MUTEX_DESTROY(&PL_perlio_mutex);\ 5244 } STMT_END 5245 # else 5246 # define PERLIO_INIT 5247 # define PERLIO_TERM PerlIO_teardown() 5248 # endif 5249 #else 5250 # define PERLIO_INIT 5251 # define PERLIO_TERM 5252 #endif 5253 5254 #ifdef MYMALLOC 5255 # ifdef MUTEX_INIT_CALLS_MALLOC 5256 # define MALLOC_INIT \ 5257 STMT_START { \ 5258 PL_malloc_mutex = NULL; \ 5259 MUTEX_INIT(&PL_malloc_mutex); \ 5260 } STMT_END 5261 # define MALLOC_TERM \ 5262 STMT_START { \ 5263 perl_mutex tmp = PL_malloc_mutex; \ 5264 PL_malloc_mutex = NULL; \ 5265 MUTEX_DESTROY(&tmp); \ 5266 } STMT_END 5267 # else 5268 # define MALLOC_INIT MUTEX_INIT(&PL_malloc_mutex) 5269 # define MALLOC_TERM MUTEX_DESTROY(&PL_malloc_mutex) 5270 # endif 5271 #else 5272 # define MALLOC_INIT 5273 # define MALLOC_TERM 5274 #endif 5275 5276 #if defined(MULTIPLICITY) 5277 5278 struct perl_memory_debug_header; 5279 struct perl_memory_debug_header { 5280 tTHX interpreter; 5281 # if defined(PERL_POISON) || defined(PERL_DEBUG_READONLY_COW) 5282 MEM_SIZE size; 5283 # endif 5284 struct perl_memory_debug_header *prev; 5285 struct perl_memory_debug_header *next; 5286 # ifdef PERL_DEBUG_READONLY_COW 5287 bool readonly; 5288 # endif 5289 }; 5290 5291 #elif defined(PERL_DEBUG_READONLY_COW) 5292 5293 struct perl_memory_debug_header; 5294 struct perl_memory_debug_header { 5295 MEM_SIZE size; 5296 }; 5297 5298 #endif 5299 5300 #if defined (PERL_TRACK_MEMPOOL) || defined (PERL_DEBUG_READONLY_COW) 5301 5302 # define PERL_MEMORY_DEBUG_HEADER_SIZE \ 5303 (sizeof(struct perl_memory_debug_header) + \ 5304 (MEM_ALIGNBYTES - sizeof(struct perl_memory_debug_header) \ 5305 %MEM_ALIGNBYTES) % MEM_ALIGNBYTES) 5306 5307 #else 5308 # define PERL_MEMORY_DEBUG_HEADER_SIZE 0 5309 #endif 5310 5311 #ifdef PERL_TRACK_MEMPOOL 5312 # ifdef PERL_DEBUG_READONLY_COW 5313 # define INIT_TRACK_MEMPOOL(header, interp) \ 5314 STMT_START { \ 5315 (header).interpreter = (interp); \ 5316 (header).prev = (header).next = &(header); \ 5317 (header).readonly = 0; \ 5318 } STMT_END 5319 # else 5320 # define INIT_TRACK_MEMPOOL(header, interp) \ 5321 STMT_START { \ 5322 (header).interpreter = (interp); \ 5323 (header).prev = (header).next = &(header); \ 5324 } STMT_END 5325 # endif 5326 # else 5327 # define INIT_TRACK_MEMPOOL(header, interp) 5328 #endif 5329 5330 #ifdef I_MALLOCMALLOC 5331 /* Needed for malloc_size(), malloc_good_size() on some systems */ 5332 # include <malloc/malloc.h> 5333 #endif 5334 5335 #ifdef MYMALLOC 5336 # define Perl_safesysmalloc_size(where) Perl_malloced_size(where) 5337 #else 5338 # if defined(HAS_MALLOC_SIZE) && !defined(PERL_DEBUG_READONLY_COW) 5339 # ifdef PERL_TRACK_MEMPOOL 5340 # define Perl_safesysmalloc_size(where) \ 5341 (malloc_size(((char *)(where)) - PERL_MEMORY_DEBUG_HEADER_SIZE) - PERL_MEMORY_DEBUG_HEADER_SIZE) 5342 # else 5343 # define Perl_safesysmalloc_size(where) malloc_size(where) 5344 # endif 5345 # endif 5346 # ifdef HAS_MALLOC_GOOD_SIZE 5347 # ifdef PERL_TRACK_MEMPOOL 5348 # define Perl_malloc_good_size(how_much) \ 5349 (malloc_good_size((how_much) + PERL_MEMORY_DEBUG_HEADER_SIZE) - PERL_MEMORY_DEBUG_HEADER_SIZE) 5350 # else 5351 # define Perl_malloc_good_size(how_much) malloc_good_size(how_much) 5352 # endif 5353 # else 5354 /* Having this as the identity operation makes some code simpler. */ 5355 # define Perl_malloc_good_size(how_much) (how_much) 5356 # endif 5357 #endif 5358 5359 typedef int (*runops_proc_t)(pTHX); 5360 typedef void (*share_proc_t) (pTHX_ SV *sv); 5361 typedef int (*thrhook_proc_t) (pTHX); 5362 typedef OP* (*PPADDR_t[]) (pTHX); 5363 typedef bool (*destroyable_proc_t) (pTHX_ SV *sv); 5364 typedef void (*despatch_signals_proc_t) (pTHX); 5365 5366 #if defined(__DYNAMIC__) && defined(PERL_DARWIN) && defined(PERL_CORE) 5367 # include <crt_externs.h> /* for the env array */ 5368 # define environ (*_NSGetEnviron()) 5369 #elif defined(USE_ENVIRON_ARRAY) && !defined(environ) 5370 /* VMS and some other platforms don't use the environ array */ 5371 EXTERN_C char **environ; /* environment variables supplied via exec */ 5372 #endif 5373 5374 #define PERL_PATCHLEVEL_H_IMPLICIT 5375 #include "patchlevel.h" 5376 #undef PERL_PATCHLEVEL_H_IMPLICIT 5377 5378 #define PERL_VERSION_STRING STRINGIFY(PERL_REVISION) "." \ 5379 STRINGIFY(PERL_VERSION) "." \ 5380 STRINGIFY(PERL_SUBVERSION) 5381 5382 #define PERL_API_VERSION_STRING STRINGIFY(PERL_API_REVISION) "." \ 5383 STRINGIFY(PERL_API_VERSION) "." \ 5384 STRINGIFY(PERL_API_SUBVERSION) 5385 5386 START_EXTERN_C 5387 5388 /* handy constants */ 5389 EXTCONST char PL_warn_uninit[] 5390 INIT("Use of uninitialized value%s%s%s"); 5391 EXTCONST char PL_warn_uninit_sv[] 5392 INIT("Use of uninitialized value%" SVf "%s%s"); 5393 EXTCONST char PL_warn_nosemi[] 5394 INIT("Semicolon seems to be missing"); 5395 EXTCONST char PL_warn_reserved[] 5396 INIT("Unquoted string \"%s\" may clash with future reserved word"); 5397 EXTCONST char PL_warn_nl[] 5398 INIT("Unsuccessful %s on filename containing newline"); 5399 EXTCONST char PL_no_wrongref[] 5400 INIT("Can't use %s ref as %s ref"); 5401 /* The core no longer needs this here. If you require the string constant, 5402 please inline a copy into your own code. */ 5403 EXTCONST char PL_no_symref[] __attribute__deprecated__ 5404 INIT("Can't use string (\"%.32s\") as %s ref while \"strict refs\" in use"); 5405 EXTCONST char PL_no_symref_sv[] 5406 INIT("Can't use string (\"%" SVf32 "\"%s) as %s ref while \"strict refs\" in use"); 5407 5408 EXTCONST char PL_no_usym[] 5409 INIT("Can't use an undefined value as %s reference"); 5410 EXTCONST char PL_no_aelem[] 5411 INIT("Modification of non-creatable array value attempted, subscript %d"); 5412 EXTCONST char PL_no_helem_sv[] 5413 INIT("Modification of non-creatable hash value attempted, subscript \"%" SVf "\""); 5414 EXTCONST char PL_no_modify[] 5415 INIT("Modification of a read-only value attempted"); 5416 EXTCONST char PL_no_security[] 5417 INIT("Insecure dependency in %s%s"); 5418 EXTCONST char PL_no_sock_func[] 5419 INIT("Unsupported socket function \"%s\" called"); 5420 EXTCONST char PL_no_dir_func[] 5421 INIT("Unsupported directory function \"%s\" called"); 5422 EXTCONST char PL_no_func[] 5423 INIT("The %s function is unimplemented"); 5424 EXTCONST char PL_no_myglob[] 5425 INIT("\"%s\" %s %s can't be in a package"); 5426 EXTCONST char PL_no_localize_ref[] 5427 INIT("Can't localize through a reference"); 5428 EXTCONST char PL_memory_wrap[] 5429 INIT("panic: memory wrap"); 5430 EXTCONST char PL_extended_cp_format[] 5431 INIT("Code point 0x%" UVXf " is not Unicode, requires a Perl extension," 5432 " and so is not portable"); 5433 EXTCONST char PL_Yes[] 5434 INIT("1"); 5435 EXTCONST char PL_No[] 5436 INIT(""); 5437 EXTCONST char PL_Zero[] 5438 INIT("0"); 5439 5440 /* 5441 =for apidoc_section $numeric 5442 =for apidoc AmTuU|const char *|PL_hexdigit|U8 value 5443 5444 This array, indexed by an integer, converts that value into the character that 5445 represents it. For example, if the input is 8, the return will be a string 5446 whose first character is '8'. What is actually returned is a pointer into a 5447 string. All you are interested in is the first character of that string. To 5448 get uppercase letters (for the values 10..15), add 16 to the index. Hence, 5449 C<PL_hexdigit[11]> is C<'b'>, and C<PL_hexdigit[11+16]> is C<'B'>. Adding 16 5450 to an index whose representation is '0'..'9' yields the same as not adding 16. 5451 Indices outside the range 0..31 result in (bad) undedefined behavior. 5452 5453 =cut 5454 */ 5455 EXTCONST char PL_hexdigit[] 5456 INIT("0123456789abcdef0123456789ABCDEF"); 5457 5458 EXT char PL_WARN_ALL 5459 INIT(0); 5460 EXT char PL_WARN_NONE 5461 INIT(0); 5462 5463 /* This is constant on most architectures, a global on OS/2 */ 5464 #ifndef OS2 5465 EXTCONST char PL_sh_path[] 5466 INIT(SH_PATH); /* full path of shell */ 5467 #endif 5468 5469 #ifdef CSH 5470 EXTCONST char PL_cshname[] 5471 INIT(CSH); 5472 # define PL_cshlen (sizeof(CSH "") - 1) 5473 #endif 5474 5475 /* These are baked at compile time into any shared perl library. 5476 In future releases this will allow us in main() to sanity test the 5477 library we're linking against. */ 5478 5479 EXTCONST U8 PL_revision 5480 INIT(PERL_REVISION); 5481 EXTCONST U8 PL_version 5482 INIT(PERL_VERSION); 5483 EXTCONST U8 PL_subversion 5484 INIT(PERL_SUBVERSION); 5485 5486 EXTCONST char PL_uuemap[65] 5487 INIT("`!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"); 5488 5489 /* a special string address whose value is "isa", but which perl knows 5490 * to treat as if it were really "DOES" when printing the method name in 5491 * the "Can't call method '%s'" error message */ 5492 EXTCONST char PL_isa_DOES[] 5493 INIT("isa"); 5494 5495 #ifdef DOINIT 5496 EXTCONST char PL_uudmap[256] = 5497 # include "uudmap.h" 5498 ; 5499 EXTCONST char PL_bitcount[256] = 5500 # include "bitcount.h" 5501 ; 5502 EXTCONST char* const PL_sig_name[] = { SIG_NAME }; 5503 EXTCONST int PL_sig_num[] = { SIG_NUM }; 5504 #else 5505 EXTCONST char PL_uudmap[256]; 5506 EXTCONST char PL_bitcount[256]; 5507 EXTCONST char* const PL_sig_name[]; 5508 EXTCONST int PL_sig_num[]; 5509 #endif 5510 5511 /* fast conversion and case folding tables. The folding tables complement the 5512 * fold, so that 'a' maps to 'A' and 'A' maps to 'a', ignoring more complicated 5513 * folds such as outside the range or to multiple characters. */ 5514 5515 #ifdef DOINIT 5516 # ifndef EBCDIC 5517 5518 /* The EBCDIC fold table depends on the code page, and hence is found in 5519 * ebcdic_tables.h */ 5520 5521 EXTCONST unsigned char PL_fold[] = { 5522 0, 1, 2, 3, 4, 5, 6, 7, 5523 8, 9, 10, 11, 12, 13, 14, 15, 5524 16, 17, 18, 19, 20, 21, 22, 23, 5525 24, 25, 26, 27, 28, 29, 30, 31, 5526 32, 33, 34, 35, 36, 37, 38, 39, 5527 40, 41, 42, 43, 44, 45, 46, 47, 5528 48, 49, 50, 51, 52, 53, 54, 55, 5529 56, 57, 58, 59, 60, 61, 62, 63, 5530 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 5531 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 5532 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 5533 'x', 'y', 'z', 91, 92, 93, 94, 95, 5534 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G', 5535 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 5536 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 5537 'X', 'Y', 'Z', 123, 124, 125, 126, 127, 5538 128, 129, 130, 131, 132, 133, 134, 135, 5539 136, 137, 138, 139, 140, 141, 142, 143, 5540 144, 145, 146, 147, 148, 149, 150, 151, 5541 152, 153, 154, 155, 156, 157, 158, 159, 5542 160, 161, 162, 163, 164, 165, 166, 167, 5543 168, 169, 170, 171, 172, 173, 174, 175, 5544 176, 177, 178, 179, 180, 181, 182, 183, 5545 184, 185, 186, 187, 188, 189, 190, 191, 5546 192, 193, 194, 195, 196, 197, 198, 199, 5547 200, 201, 202, 203, 204, 205, 206, 207, 5548 208, 209, 210, 211, 212, 213, 214, 215, 5549 216, 217, 218, 219, 220, 221, 222, 223, 5550 224, 225, 226, 227, 228, 229, 230, 231, 5551 232, 233, 234, 235, 236, 237, 238, 239, 5552 240, 241, 242, 243, 244, 245, 246, 247, 5553 248, 249, 250, 251, 252, 253, 254, 255 5554 }; 5555 5556 EXTCONST unsigned char PL_fold_latin1[] = { 5557 /* Full latin1 complement folding, except for three problematic code points: 5558 * Micro sign (181 = 0xB5) and y with diearesis (255 = 0xFF) have their 5559 * fold complements outside the Latin1 range, so can't match something 5560 * that isn't in utf8. 5561 * German lower case sharp s (223 = 0xDF) folds to two characters, 'ss', 5562 * not one, so can't be represented in this table. 5563 * 5564 * All have to be specially handled */ 5565 0, 1, 2, 3, 4, 5, 6, 7, 5566 8, 9, 10, 11, 12, 13, 14, 15, 5567 16, 17, 18, 19, 20, 21, 22, 23, 5568 24, 25, 26, 27, 28, 29, 30, 31, 5569 32, 33, 34, 35, 36, 37, 38, 39, 5570 40, 41, 42, 43, 44, 45, 46, 47, 5571 48, 49, 50, 51, 52, 53, 54, 55, 5572 56, 57, 58, 59, 60, 61, 62, 63, 5573 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 5574 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 5575 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 5576 'x', 'y', 'z', 91, 92, 93, 94, 95, 5577 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G', 5578 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 5579 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 5580 'X', 'Y', 'Z', 123, 124, 125, 126, 127, 5581 128, 129, 130, 131, 132, 133, 134, 135, 5582 136, 137, 138, 139, 140, 141, 142, 143, 5583 144, 145, 146, 147, 148, 149, 150, 151, 5584 152, 153, 154, 155, 156, 157, 158, 159, 5585 160, 161, 162, 163, 164, 165, 166, 167, 5586 168, 169, 170, 171, 172, 173, 174, 175, 5587 176, 177, 178, 179, 180, 181 /*micro */, 182, 183, 5588 184, 185, 186, 187, 188, 189, 190, 191, 5589 192+32, 193+32, 194+32, 195+32, 196+32, 197+32, 198+32, 199+32, 5590 200+32, 201+32, 202+32, 203+32, 204+32, 205+32, 206+32, 207+32, 5591 208+32, 209+32, 210+32, 211+32, 212+32, 213+32, 214+32, 215, 5592 216+32, 217+32, 218+32, 219+32, 220+32, 221+32, 222+32, 223 /* ss */, 5593 224-32, 225-32, 226-32, 227-32, 228-32, 229-32, 230-32, 231-32, 5594 232-32, 233-32, 234-32, 235-32, 236-32, 237-32, 238-32, 239-32, 5595 240-32, 241-32, 242-32, 243-32, 244-32, 245-32, 246-32, 247, 5596 248-32, 249-32, 250-32, 251-32, 252-32, 253-32, 254-32, 5597 255 /* y with diaeresis */ 5598 }; 5599 5600 /* If these tables are accessed through ebcdic, the access will be converted to 5601 * latin1 first */ 5602 EXTCONST unsigned char PL_latin1_lc[] = { /* lowercasing */ 5603 0, 1, 2, 3, 4, 5, 6, 7, 5604 8, 9, 10, 11, 12, 13, 14, 15, 5605 16, 17, 18, 19, 20, 21, 22, 23, 5606 24, 25, 26, 27, 28, 29, 30, 31, 5607 32, 33, 34, 35, 36, 37, 38, 39, 5608 40, 41, 42, 43, 44, 45, 46, 47, 5609 48, 49, 50, 51, 52, 53, 54, 55, 5610 56, 57, 58, 59, 60, 61, 62, 63, 5611 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 5612 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 5613 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 5614 'x', 'y', 'z', 91, 92, 93, 94, 95, 5615 96, 97, 98, 99, 100, 101, 102, 103, 5616 104, 105, 106, 107, 108, 109, 110, 111, 5617 112, 113, 114, 115, 116, 117, 118, 119, 5618 120, 121, 122, 123, 124, 125, 126, 127, 5619 128, 129, 130, 131, 132, 133, 134, 135, 5620 136, 137, 138, 139, 140, 141, 142, 143, 5621 144, 145, 146, 147, 148, 149, 150, 151, 5622 152, 153, 154, 155, 156, 157, 158, 159, 5623 160, 161, 162, 163, 164, 165, 166, 167, 5624 168, 169, 170, 171, 172, 173, 174, 175, 5625 176, 177, 178, 179, 180, 181, 182, 183, 5626 184, 185, 186, 187, 188, 189, 190, 191, 5627 192+32, 193+32, 194+32, 195+32, 196+32, 197+32, 198+32, 199+32, 5628 200+32, 201+32, 202+32, 203+32, 204+32, 205+32, 206+32, 207+32, 5629 208+32, 209+32, 210+32, 211+32, 212+32, 213+32, 214+32, 215, 5630 216+32, 217+32, 218+32, 219+32, 220+32, 221+32, 222+32, 223, 5631 224, 225, 226, 227, 228, 229, 230, 231, 5632 232, 233, 234, 235, 236, 237, 238, 239, 5633 240, 241, 242, 243, 244, 245, 246, 247, 5634 248, 249, 250, 251, 252, 253, 254, 255 5635 }; 5636 5637 /* upper and title case of latin1 characters, modified so that the three tricky 5638 * ones are mapped to 255 (which is one of the three) */ 5639 EXTCONST unsigned char PL_mod_latin1_uc[] = { 5640 0, 1, 2, 3, 4, 5, 6, 7, 5641 8, 9, 10, 11, 12, 13, 14, 15, 5642 16, 17, 18, 19, 20, 21, 22, 23, 5643 24, 25, 26, 27, 28, 29, 30, 31, 5644 32, 33, 34, 35, 36, 37, 38, 39, 5645 40, 41, 42, 43, 44, 45, 46, 47, 5646 48, 49, 50, 51, 52, 53, 54, 55, 5647 56, 57, 58, 59, 60, 61, 62, 63, 5648 64, 65, 66, 67, 68, 69, 70, 71, 5649 72, 73, 74, 75, 76, 77, 78, 79, 5650 80, 81, 82, 83, 84, 85, 86, 87, 5651 88, 89, 90, 91, 92, 93, 94, 95, 5652 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G', 5653 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 5654 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 5655 'X', 'Y', 'Z', 123, 124, 125, 126, 127, 5656 128, 129, 130, 131, 132, 133, 134, 135, 5657 136, 137, 138, 139, 140, 141, 142, 143, 5658 144, 145, 146, 147, 148, 149, 150, 151, 5659 152, 153, 154, 155, 156, 157, 158, 159, 5660 160, 161, 162, 163, 164, 165, 166, 167, 5661 168, 169, 170, 171, 172, 173, 174, 175, 5662 176, 177, 178, 179, 180, 255 /*micro*/, 182, 183, 5663 184, 185, 186, 187, 188, 189, 190, 191, 5664 192, 193, 194, 195, 196, 197, 198, 199, 5665 200, 201, 202, 203, 204, 205, 206, 207, 5666 208, 209, 210, 211, 212, 213, 214, 215, 5667 216, 217, 218, 219, 220, 221, 222, 5668 # if UNICODE_MAJOR_VERSION > 2 \ 5669 || (UNICODE_MAJOR_VERSION == 2 && UNICODE_DOT_VERSION >= 1 \ 5670 && UNICODE_DOT_DOT_VERSION >= 8) 5671 255 /*sharp s*/, 5672 # else /* uc(sharp s) is 'sharp s' itself in early unicode */ 5673 223, 5674 # endif 5675 224-32, 225-32, 226-32, 227-32, 228-32, 229-32, 230-32, 231-32, 5676 232-32, 233-32, 234-32, 235-32, 236-32, 237-32, 238-32, 239-32, 5677 240-32, 241-32, 242-32, 243-32, 244-32, 245-32, 246-32, 247, 5678 248-32, 249-32, 250-32, 251-32, 252-32, 253-32, 254-32, 255 5679 }; 5680 # endif /* !EBCDIC, but still in DOINIT */ 5681 #else /* ! DOINIT */ 5682 # ifndef EBCDIC 5683 EXTCONST unsigned char PL_fold[]; 5684 EXTCONST unsigned char PL_fold_latin1[]; 5685 EXTCONST unsigned char PL_mod_latin1_uc[]; 5686 EXTCONST unsigned char PL_latin1_lc[]; 5687 # endif 5688 #endif 5689 5690 /* Although only used for debugging, these constants must be available in 5691 * non-debugging builds too, since they're used in ext/re/re_exec.c, 5692 * which has DEBUGGING enabled always */ 5693 #ifdef DOINIT 5694 EXTCONST char* const PL_block_type[] = { 5695 "NULL", 5696 "WHEN", 5697 "BLOCK", 5698 "GIVEN", 5699 "LOOP_ARY", 5700 "LOOP_LAZYSV", 5701 "LOOP_LAZYIV", 5702 "LOOP_LIST", 5703 "LOOP_PLAIN", 5704 "SUB", 5705 "FORMAT", 5706 "EVAL", 5707 "SUBST", 5708 "DEFER" 5709 }; 5710 #else 5711 EXTCONST char* PL_block_type[]; 5712 #endif 5713 5714 /* These are all the compile time options that affect binary compatibility. 5715 Other compile time options that are binary compatible are in perl.c 5716 (in S_Internals_V()). Both are combined for the output of perl -V 5717 However, this string will be embedded in any shared perl library, which will 5718 allow us add a comparison check in perlmain.c in the near future. */ 5719 #ifdef DOINIT 5720 EXTCONST char PL_bincompat_options[] = 5721 # ifdef DEBUG_LEAKING_SCALARS 5722 " DEBUG_LEAKING_SCALARS" 5723 # endif 5724 # ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP 5725 " DEBUG_LEAKING_SCALARS_FORK_DUMP" 5726 # endif 5727 # ifdef HAS_TIMES 5728 " HAS_TIMES" 5729 # endif 5730 # ifdef HAVE_INTERP_INTERN 5731 " HAVE_INTERP_INTERN" 5732 # endif 5733 # ifdef MULTIPLICITY 5734 " MULTIPLICITY" 5735 # endif 5736 # ifdef MYMALLOC 5737 " MYMALLOC" 5738 # endif 5739 # ifdef NO_HASH_SEED 5740 " NO_HASH_SEED" 5741 # endif 5742 # ifdef PERLIO_LAYERS 5743 " PERLIO_LAYERS" 5744 # endif 5745 # ifdef PERL_DEBUG_READONLY_COW 5746 " PERL_DEBUG_READONLY_COW" 5747 # endif 5748 # ifdef PERL_DEBUG_READONLY_OPS 5749 " PERL_DEBUG_READONLY_OPS" 5750 # endif 5751 # ifdef PERL_HASH_FUNC_DEFINE 5752 /* note that this is different from the others, PERL_HASH_FUNC_DEFINE 5753 * is a string which says which define was defined. */ 5754 " " PERL_HASH_FUNC_DEFINE 5755 # endif 5756 # ifdef PERL_HASH_USE_SBOX32 5757 " PERL_HASH_USE_SBOX32" 5758 # else 5759 " PERL_HASH_NO_SBOX32" 5760 # endif 5761 # ifdef PERL_IMPLICIT_SYS 5762 " PERL_IMPLICIT_SYS" 5763 # endif 5764 # ifdef PERL_POISON 5765 " PERL_POISON" 5766 # endif 5767 # ifdef PERL_SAWAMPERSAND 5768 " PERL_SAWAMPERSAND" 5769 # endif 5770 # ifdef PERL_TRACK_MEMPOOL 5771 " PERL_TRACK_MEMPOOL" 5772 # endif 5773 # ifdef PERL_USES_PL_PIDSTATUS 5774 " PERL_USES_PL_PIDSTATUS" 5775 # endif 5776 # ifdef USE_64_BIT_ALL 5777 " USE_64_BIT_ALL" 5778 # endif 5779 # ifdef USE_64_BIT_INT 5780 " USE_64_BIT_INT" 5781 # endif 5782 # ifdef USE_IEEE 5783 " USE_IEEE" 5784 # endif 5785 # ifdef USE_ITHREADS 5786 " USE_ITHREADS" 5787 # endif 5788 # ifdef USE_LARGE_FILES 5789 " USE_LARGE_FILES" 5790 # endif 5791 # ifdef USE_LOCALE_COLLATE 5792 " USE_LOCALE_COLLATE" 5793 # endif 5794 # ifdef USE_LOCALE_NUMERIC 5795 " USE_LOCALE_NUMERIC" 5796 # endif 5797 # ifdef USE_LOCALE_TIME 5798 " USE_LOCALE_TIME" 5799 # endif 5800 # ifdef USE_LONG_DOUBLE 5801 " USE_LONG_DOUBLE" 5802 # endif 5803 # ifdef USE_PERLIO 5804 " USE_PERLIO" 5805 # endif 5806 # ifdef USE_QUADMATH 5807 " USE_QUADMATH" 5808 # endif 5809 # ifdef USE_REENTRANT_API 5810 " USE_REENTRANT_API" 5811 # endif 5812 # ifdef USE_SOCKS 5813 " USE_SOCKS" 5814 # endif 5815 # ifdef VMS_DO_SOCKETS 5816 " VMS_DO_SOCKETS" 5817 # endif 5818 # ifdef VMS_SHORTEN_LONG_SYMBOLS 5819 " VMS_SHORTEN_LONG_SYMBOLS" 5820 # endif 5821 # ifdef VMS_WE_ARE_CASE_SENSITIVE 5822 " VMS_SYMBOL_CASE_AS_IS" 5823 # endif 5824 ""; /* keep this on a line by itself, WITH the empty string */ 5825 #else 5826 EXTCONST char PL_bincompat_options[]; 5827 #endif 5828 5829 #ifndef PERL_SET_PHASE 5830 # define PERL_SET_PHASE(new_phase) \ 5831 PERL_DTRACE_PROBE_PHASE(new_phase); \ 5832 PL_phase = new_phase; 5833 #endif 5834 5835 /* The interpreter phases. If these ever change, PL_phase_names right below will 5836 * need to be updated accordingly. */ 5837 enum perl_phase { 5838 PERL_PHASE_CONSTRUCT = 0, 5839 PERL_PHASE_START = 1, 5840 PERL_PHASE_CHECK = 2, 5841 PERL_PHASE_INIT = 3, 5842 PERL_PHASE_RUN = 4, 5843 PERL_PHASE_END = 5, 5844 PERL_PHASE_DESTRUCT = 6 5845 }; 5846 5847 #ifdef DOINIT 5848 EXTCONST char *const PL_phase_names[] = { 5849 "CONSTRUCT", 5850 "START", 5851 "CHECK", 5852 "INIT", 5853 "RUN", 5854 "END", 5855 "DESTRUCT" 5856 }; 5857 #else 5858 EXTCONST char *const PL_phase_names[]; 5859 #endif 5860 5861 /* 5862 =for apidoc_section $utility 5863 5864 =for apidoc phase_name 5865 5866 Returns the given phase's name as a NUL-terminated string. 5867 5868 For example, to print a stack trace that includes the current 5869 interpreter phase you might do: 5870 5871 const char* phase_name = phase_name(PL_phase); 5872 mess("This is weird. (Perl phase: %s)", phase_name); 5873 5874 =cut 5875 */ 5876 5877 #define phase_name(phase) (PL_phase_names[phase]) 5878 5879 #ifndef PERL_CORE 5880 /* Do not use this macro. It only exists for extensions that rely on PL_dirty 5881 * instead of using the newer PL_phase, which provides everything PL_dirty 5882 * provided, and more. */ 5883 # define PL_dirty cBOOL(PL_phase == PERL_PHASE_DESTRUCT) 5884 5885 # define PL_amagic_generation PL_na 5886 # define PL_encoding ((SV *)NULL) 5887 #endif /* !PERL_CORE */ 5888 5889 #define PL_hints PL_compiling.cop_hints 5890 #define PL_maxo MAXO 5891 5892 END_EXTERN_C 5893 5894 /*****************************************************************************/ 5895 /* This lexer/parser stuff is currently global since yacc is hard to reenter */ 5896 /*****************************************************************************/ 5897 /* XXX This needs to be revisited, since BEGIN makes yacc re-enter... */ 5898 5899 #ifdef __Lynx__ 5900 /* LynxOS defines these in scsi.h which is included via ioctl.h */ 5901 #ifdef FORMAT 5902 #undef FORMAT 5903 #endif 5904 #ifdef SPACE 5905 #undef SPACE 5906 #endif 5907 #endif 5908 5909 #define LEX_NOTPARSING 11 /* borrowed from toke.c */ 5910 5911 typedef enum { 5912 XOPERATOR, 5913 XTERM, 5914 XREF, 5915 XSTATE, 5916 XBLOCK, 5917 XATTRBLOCK, /* next token should be an attribute or block */ 5918 XATTRTERM, /* next token should be an attribute, or block in a term */ 5919 XTERMBLOCK, 5920 XBLOCKTERM, 5921 XPOSTDEREF, 5922 XTERMORDORDOR /* evil hack */ 5923 /* update exp_name[] in toke.c if adding to this enum */ 5924 } expectation; 5925 5926 #define KEY_sigvar 0xFFFF /* fake keyword representing a signature var */ 5927 5928 /* Hints are now stored in a dedicated U32, so the bottom 8 bits are no longer 5929 special and there is no need for HINT_PRIVATE_MASK for COPs. 5930 5931 NOTE: The typical module using these has the bit value hard-coded, so don't 5932 blindly change the values of these. 5933 5934 If we run out of bits, the 2 locale ones could be combined. The PARTIAL one 5935 is for "use locale 'FOO'" which excludes some categories. It requires going 5936 to %^H to find out which are in and which are out. This could be extended 5937 for the normal case of a plain HINT_LOCALE, so that %^H would be used for 5938 any locale form. */ 5939 #define HINT_INTEGER 0x00000001 /* integer pragma */ 5940 #define HINT_STRICT_REFS 0x00000002 /* strict pragma */ 5941 #define HINT_LOCALE 0x00000004 /* locale pragma */ 5942 #define HINT_BYTES 0x00000008 /* bytes pragma */ 5943 #define HINT_LOCALE_PARTIAL 0x00000010 /* locale, but a subset of categories */ 5944 5945 #define HINT_EXPLICIT_STRICT_REFS 0x00000020 /* strict.pm */ 5946 #define HINT_EXPLICIT_STRICT_SUBS 0x00000040 /* strict.pm */ 5947 #define HINT_EXPLICIT_STRICT_VARS 0x00000080 /* strict.pm */ 5948 5949 #define HINT_BLOCK_SCOPE 0x00000100 5950 #define HINT_STRICT_SUBS 0x00000200 /* strict pragma */ 5951 #define HINT_STRICT_VARS 0x00000400 /* strict pragma */ 5952 #define HINT_UNI_8_BIT 0x00000800 /* unicode_strings feature */ 5953 5954 /* The HINT_NEW_* constants are used by the overload pragma */ 5955 #define HINT_NEW_INTEGER 0x00001000 5956 #define HINT_NEW_FLOAT 0x00002000 5957 #define HINT_NEW_BINARY 0x00004000 5958 #define HINT_NEW_STRING 0x00008000 5959 #define HINT_NEW_RE 0x00010000 5960 #define HINT_LOCALIZE_HH 0x00020000 /* %^H needs to be copied */ 5961 #define HINT_LEXICAL_IO_IN 0x00040000 /* ${^OPEN} is set for input */ 5962 #define HINT_LEXICAL_IO_OUT 0x00080000 /* ${^OPEN} is set for output */ 5963 5964 #define HINT_RE_TAINT 0x00100000 /* re pragma */ 5965 #define HINT_RE_EVAL 0x00200000 /* re pragma */ 5966 5967 #define HINT_FILETEST_ACCESS 0x00400000 /* filetest pragma */ 5968 #define HINT_UTF8 0x00800000 /* utf8 pragma */ 5969 5970 #define HINT_NO_AMAGIC 0x01000000 /* overloading pragma */ 5971 5972 #define HINT_RE_FLAGS 0x02000000 /* re '/xism' pragma */ 5973 5974 #define HINT_FEATURE_MASK 0x3c000000 /* 4 bits for feature bundles */ 5975 5976 /* Note: Used for HINT_M_VMSISH_*, 5977 currently defined by vms/vmsish.h: 5978 0x40000000 5979 0x80000000 5980 */ 5981 5982 #define HINT_ALL_STRICT HINT_STRICT_REFS \ 5983 | HINT_STRICT_SUBS \ 5984 | HINT_STRICT_VARS 5985 5986 #ifdef USE_STRICT_BY_DEFAULT 5987 #define HINTS_DEFAULT HINT_ALL_STRICT 5988 #else 5989 #define HINTS_DEFAULT 0 5990 #endif 5991 5992 /* flags for PL_sawampersand */ 5993 5994 #define SAWAMPERSAND_LEFT 1 /* saw $` */ 5995 #define SAWAMPERSAND_MIDDLE 2 /* saw $& */ 5996 #define SAWAMPERSAND_RIGHT 4 /* saw $' */ 5997 5998 #ifndef PERL_SAWAMPERSAND 5999 # define PL_sawampersand \ 6000 (SAWAMPERSAND_LEFT|SAWAMPERSAND_MIDDLE|SAWAMPERSAND_RIGHT) 6001 #endif 6002 6003 /* Used for debugvar magic */ 6004 #define DBVARMG_SINGLE 0 6005 #define DBVARMG_TRACE 1 6006 #define DBVARMG_SIGNAL 2 6007 #define DBVARMG_COUNT 3 6008 6009 #define PL_DBsingle_iv (PL_DBcontrol[DBVARMG_SINGLE]) 6010 #define PL_DBtrace_iv (PL_DBcontrol[DBVARMG_TRACE]) 6011 #define PL_DBsignal_iv (PL_DBcontrol[DBVARMG_SIGNAL]) 6012 6013 /* Various states of the input record separator SV (rs) */ 6014 #define RsSNARF(sv) (! SvOK(sv)) 6015 #define RsSIMPLE(sv) (SvOK(sv) && (! SvPOK(sv) || SvCUR(sv))) 6016 #define RsPARA(sv) (SvPOK(sv) && ! SvCUR(sv)) 6017 #define RsRECORD(sv) (SvROK(sv) && (SvIV(SvRV(sv)) > 0)) 6018 6019 /* A struct for keeping various DEBUGGING related stuff, 6020 * neatly packed. Currently only scratch variables for 6021 * constructing debug output are included. Needed always, 6022 * not just when DEBUGGING, though, because of the re extension. c*/ 6023 struct perl_debug_pad { 6024 SV pad[3]; 6025 }; 6026 6027 #define PERL_DEBUG_PAD(i) &(PL_debug_pad.pad[i]) 6028 #define PERL_DEBUG_PAD_ZERO(i) (SvPVX(PERL_DEBUG_PAD(i))[0] = 0, \ 6029 (((XPV*) SvANY(PERL_DEBUG_PAD(i)))->xpv_cur = 0), \ 6030 PERL_DEBUG_PAD(i)) 6031 6032 /* Enable variables which are pointers to functions */ 6033 typedef void (*peep_t)(pTHX_ OP* o); 6034 typedef regexp* (*regcomp_t) (pTHX_ char* exp, char* xend, PMOP* pm); 6035 typedef I32 (*regexec_t) (pTHX_ regexp* prog, char* stringarg, 6036 char* strend, char* strbeg, I32 minend, 6037 SV* screamer, void* data, U32 flags); 6038 typedef char* (*re_intuit_start_t) (pTHX_ regexp *prog, SV *sv, 6039 char *strpos, char *strend, 6040 U32 flags, 6041 re_scream_pos_data *d); 6042 typedef SV* (*re_intuit_string_t) (pTHX_ regexp *prog); 6043 typedef void (*regfree_t) (pTHX_ struct regexp* r); 6044 typedef regexp* (*regdupe_t) (pTHX_ const regexp* r, CLONE_PARAMS *param); 6045 typedef I32 (*re_fold_t)(pTHX_ const char *, char const *, I32); 6046 6047 typedef void (*DESTRUCTORFUNC_NOCONTEXT_t) (void*); 6048 typedef void (*DESTRUCTORFUNC_t) (pTHX_ void*); 6049 typedef void (*SVFUNC_t) (pTHX_ SV* const); 6050 typedef I32 (*SVCOMPARE_t) (pTHX_ SV* const, SV* const); 6051 typedef void (*XSINIT_t) (pTHX); 6052 typedef void (*ATEXIT_t) (pTHX_ void*); 6053 typedef void (*XSUBADDR_t) (pTHX_ CV *); 6054 6055 enum Perl_custom_infix_precedence { 6056 /* These numbers are spaced out to give room to insert new values as 6057 * required. They form part of the ABI contract with XS::Parse::Infix so 6058 * they should not be changed within a stable release cycle, but they can 6059 * be freely altered during a development cycle because no ABI guarantees 6060 * are made at that time */ 6061 INFIX_PREC_LOW = 10, /* non-associative */ 6062 INFIX_PREC_LOGICAL_OR_LOW = 30, /* left-associative, as `or` */ 6063 INFIX_PREC_LOGICAL_AND_LOW = 40, /* left-associative, as `and` */ 6064 INFIX_PREC_ASSIGN = 50, /* right-associative, as `=` */ 6065 INFIX_PREC_LOGICAL_OR = 70, /* left-associative, as `||` */ 6066 INFIX_PREC_LOGICAL_AND = 80, /* left-associative, as `&&` */ 6067 INFIX_PREC_REL = 90, /* non-associative, just below `==` */ 6068 INFIX_PREC_ADD = 110, /* left-associative, as `+` */ 6069 INFIX_PREC_MUL = 130, /* left-associative, as `*` */ 6070 INFIX_PREC_POW = 150, /* right-associative, as `**` */ 6071 INFIX_PREC_HIGH = 170, /* non-associative */ 6072 /* Try to keep within the range of a U8 in case we need to split the field 6073 * and add flags */ 6074 }; 6075 struct Perl_custom_infix; 6076 struct Perl_custom_infix { 6077 enum Perl_custom_infix_precedence prec; 6078 void (*parse)(pTHX_ SV **opdata, struct Perl_custom_infix *); /* optional */ 6079 OP *(*build_op)(pTHX_ SV **opdata, OP *lhs, OP *rhs, struct Perl_custom_infix *); 6080 }; 6081 6082 typedef OP* (*Perl_ppaddr_t)(pTHX); 6083 typedef OP* (*Perl_check_t) (pTHX_ OP*); 6084 typedef void(*Perl_ophook_t)(pTHX_ OP*); 6085 typedef int (*Perl_keyword_plugin_t)(pTHX_ char*, STRLEN, OP**); 6086 typedef STRLEN (*Perl_infix_plugin_t)(pTHX_ char*, STRLEN, struct Perl_custom_infix **); 6087 typedef void(*Perl_cpeep_t)(pTHX_ OP *, OP *); 6088 6089 typedef void(*globhook_t)(pTHX); 6090 6091 #define KEYWORD_PLUGIN_DECLINE 0 6092 #define KEYWORD_PLUGIN_STMT 1 6093 #define KEYWORD_PLUGIN_EXPR 2 6094 6095 /* Interpreter exitlist entry */ 6096 typedef struct exitlistentry { 6097 void (*fn) (pTHX_ void*); 6098 void *ptr; 6099 } PerlExitListEntry; 6100 6101 /* if you only have signal() and it resets on each signal, FAKE_PERSISTENT_SIGNAL_HANDLERS fixes */ 6102 /* These have to be before perlvars.h */ 6103 #if !defined(HAS_SIGACTION) && defined(VMS) 6104 # define FAKE_PERSISTENT_SIGNAL_HANDLERS 6105 #endif 6106 /* if we're doing kill() with sys$sigprc on VMS, FAKE_DEFAULT_SIGNAL_HANDLERS */ 6107 #if defined(KILL_BY_SIGPRC) 6108 # define FAKE_DEFAULT_SIGNAL_HANDLERS 6109 #endif 6110 6111 #if !defined(MULTIPLICITY) 6112 6113 struct interpreter { 6114 char broiled; 6115 }; 6116 6117 #else 6118 6119 /* If we have multiple interpreters define a struct 6120 holding variables which must be per-interpreter 6121 If we don't have threads anything that would have 6122 be per-thread is per-interpreter. 6123 */ 6124 6125 /* Set up PERLVAR macros for populating structs */ 6126 # define PERLVAR(prefix,var,type) type prefix##var; 6127 6128 /* 'var' is an array of length 'n' */ 6129 # define PERLVARA(prefix,var,n,type) type prefix##var[n]; 6130 6131 /* initialize 'var' to init' */ 6132 # define PERLVARI(prefix,var,type,init) type prefix##var; 6133 6134 /* like PERLVARI, but make 'var' a const */ 6135 # define PERLVARIC(prefix,var,type,init) type prefix##var; 6136 6137 struct interpreter { 6138 # include "intrpvar.h" 6139 }; 6140 6141 EXTCONST U16 PL_interp_size 6142 INIT(sizeof(struct interpreter)); 6143 6144 # define PERL_INTERPRETER_SIZE_UPTO_MEMBER(member) \ 6145 STRUCT_OFFSET(struct interpreter, member) + \ 6146 sizeof(((struct interpreter*)0)->member) 6147 6148 /* This will be useful for subsequent releases, because this has to be the 6149 same in your libperl as in main(), else you have a mismatch and must abort. 6150 */ 6151 EXTCONST U16 PL_interp_size_5_18_0 6152 INIT(PERL_INTERPRETER_SIZE_UPTO_MEMBER(PERL_LAST_5_18_0_INTERP_MEMBER)); 6153 6154 6155 /* Done with PERLVAR macros for now ... */ 6156 # undef PERLVAR 6157 # undef PERLVARA 6158 # undef PERLVARI 6159 # undef PERLVARIC 6160 6161 #endif /* MULTIPLICITY */ 6162 6163 struct tempsym; /* defined in pp_pack.c */ 6164 6165 #include "thread.h" 6166 #include "pp.h" 6167 6168 #undef PERL_CKDEF 6169 #undef PERL_PPDEF 6170 #define PERL_CKDEF(s) PERL_CALLCONV OP *s (pTHX_ OP *o); 6171 #define PERL_PPDEF(s) PERL_CALLCONV OP *s (pTHX); 6172 6173 #ifdef MYMALLOC 6174 # include "malloc_ctl.h" 6175 #endif 6176 6177 /* 6178 * This provides a layer of functions and macros to ensure extensions will 6179 * get to use the same RTL functions as the core. 6180 */ 6181 #if defined(WIN32) 6182 # include "win32iop.h" 6183 #endif 6184 6185 6186 #include "proto.h" 6187 6188 /* this has structure inits, so it cannot be included before here */ 6189 #include "opcode.h" 6190 6191 /* The following must follow proto.h as #defines mess up syntax */ 6192 6193 #if !defined(PERL_FOR_X2P) 6194 # include "embedvar.h" 6195 #endif 6196 6197 /* Now include all the 'global' variables 6198 * If we don't have threads or multiple interpreters 6199 * these include variables that would have been their struct-s 6200 */ 6201 6202 #define PERLVAR(prefix,var,type) EXT type PL_##var; 6203 #define PERLVARA(prefix,var,n,type) EXT type PL_##var[n]; 6204 #define PERLVARI(prefix,var,type,init) EXT type PL_##var INIT(init); 6205 #define PERLVARIC(prefix,var,type,init) EXTCONST type PL_##var INIT(init); 6206 6207 #if !defined(MULTIPLICITY) 6208 START_EXTERN_C 6209 # include "intrpvar.h" 6210 END_EXTERN_C 6211 # define PL_sv_yes (PL_sv_immortals[0]) 6212 # define PL_sv_undef (PL_sv_immortals[1]) 6213 # define PL_sv_no (PL_sv_immortals[2]) 6214 # define PL_sv_zero (PL_sv_immortals[3]) 6215 #endif 6216 6217 #ifdef PERL_CORE 6218 /* All core uses now exterminated. Ensure no zombies can return: */ 6219 # undef PL_na 6220 #endif 6221 6222 /* Now all the config stuff is setup we can include embed.h 6223 In particular, need the relevant *ish file included already, as it may 6224 define HAVE_INTERP_INTERN */ 6225 #include "embed.h" 6226 6227 START_EXTERN_C 6228 6229 # include "perlvars.h" 6230 6231 END_EXTERN_C 6232 6233 #undef PERLVAR 6234 #undef PERLVARA 6235 #undef PERLVARI 6236 #undef PERLVARIC 6237 6238 #if !defined(MULTIPLICITY) 6239 /* Set up PERLVAR macros for populating structs */ 6240 # define PERLVAR(prefix,var,type) type prefix##var; 6241 /* 'var' is an array of length 'n' */ 6242 # define PERLVARA(prefix,var,n,type) type prefix##var[n]; 6243 /* initialize 'var' to init' */ 6244 # define PERLVARI(prefix,var,type,init) type prefix##var; 6245 /* like PERLVARI, but make 'var' a const */ 6246 # define PERLVARIC(prefix,var,type,init) type prefix##var; 6247 6248 /* this is never instantiated, is it just used for sizeof(struct PerlHandShakeInterpreter) */ 6249 struct PerlHandShakeInterpreter { 6250 # include "intrpvar.h" 6251 }; 6252 # undef PERLVAR 6253 # undef PERLVARA 6254 # undef PERLVARI 6255 # undef PERLVARIC 6256 #endif 6257 6258 START_EXTERN_C 6259 6260 /* dummy variables that hold pointers to both runops functions, thus forcing 6261 * them *both* to get linked in (useful for Peek.xs, debugging etc) */ 6262 6263 EXTCONST runops_proc_t PL_runops_std 6264 INIT(Perl_runops_standard); 6265 EXTCONST runops_proc_t PL_runops_dbg 6266 INIT(Perl_runops_debug); 6267 6268 #define EXT_MGVTBL EXTCONST MGVTBL 6269 6270 #define PERL_MAGIC_READONLY_ACCEPTABLE 0x40 6271 #define PERL_MAGIC_VALUE_MAGIC 0x80 6272 #define PERL_MAGIC_VTABLE_MASK 0x3F 6273 6274 /* can this type of magic be attached to a readonly SV? */ 6275 #define PERL_MAGIC_TYPE_READONLY_ACCEPTABLE(t) \ 6276 (PL_magic_data[(U8)(t)] & PERL_MAGIC_READONLY_ACCEPTABLE) 6277 6278 /* Is this type of magic container magic (%ENV, $1 etc), 6279 * or value magic (pos, taint etc)? 6280 */ 6281 #define PERL_MAGIC_TYPE_IS_VALUE_MAGIC(t) \ 6282 (PL_magic_data[(U8)(t)] & PERL_MAGIC_VALUE_MAGIC) 6283 6284 #include "mg_vtable.h" 6285 6286 #ifdef DOINIT 6287 EXTCONST U8 PL_magic_data[256] = 6288 # include "mg_data.h" 6289 ; 6290 #else 6291 EXTCONST U8 PL_magic_data[256]; 6292 #endif 6293 6294 #ifdef DOINIT 6295 /* NL IV NV PV INV PI PN MG RX GV LV AV HV CV FM IO OBJ */ 6296 EXTCONST bool 6297 PL_valid_types_IVX[] = { 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0 }; 6298 EXTCONST bool 6299 PL_valid_types_NVX[] = { 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0 }; 6300 EXTCONST bool 6301 PL_valid_types_PVX[] = { 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0 }; 6302 EXTCONST bool 6303 PL_valid_types_RV[] = { 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0 }; 6304 EXTCONST bool 6305 PL_valid_types_IV_set[] = { 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0 }; 6306 EXTCONST bool 6307 PL_valid_types_NV_set[] = { 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0 }; 6308 6309 EXTCONST U8 6310 PL_deBruijn_bitpos_tab32[] = { 6311 /* https://graphics.stanford.edu/~seander/bithacks.html#IntegerLogDeBruijn */ 6312 0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8, 6313 31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9 6314 }; 6315 6316 EXTCONST U8 6317 PL_deBruijn_bitpos_tab64[] = { 6318 /* https://stackoverflow.com/questions/11376288/fast-computing-of-log2-for-64-bit-integers */ 6319 63, 0, 58, 1, 59, 47, 53, 2, 60, 39, 48, 27, 54, 33, 42, 3, 6320 61, 51, 37, 40, 49, 18, 28, 20, 55, 30, 34, 11, 43, 14, 22, 4, 6321 62, 57, 46, 52, 38, 26, 32, 41, 50, 36, 17, 19, 29, 10, 13, 21, 6322 56, 45, 25, 31, 35, 16, 9, 12, 44, 24, 15, 8, 23, 7, 6, 5 6323 }; 6324 6325 #else 6326 6327 EXTCONST bool PL_valid_types_IVX[]; 6328 EXTCONST bool PL_valid_types_NVX[]; 6329 EXTCONST bool PL_valid_types_PVX[]; 6330 EXTCONST bool PL_valid_types_RV[]; 6331 EXTCONST bool PL_valid_types_IV_set[]; 6332 EXTCONST bool PL_valid_types_NV_set[]; 6333 EXTCONST U8 PL_deBruijn_bitpos_tab32[]; 6334 EXTCONST U8 PL_deBruijn_bitpos_tab64[]; 6335 6336 #endif 6337 6338 /* The constants for using PL_deBruijn_bitpos_tab */ 6339 #define PERL_deBruijnMagic32_ 0x077CB531 6340 #define PERL_deBruijnShift32_ 27 6341 #define PERL_deBruijnMagic64_ 0x07EDD5E59A4E28C2 6342 #define PERL_deBruijnShift64_ 58 6343 6344 /* In C99 we could use designated (named field) union initializers. 6345 * In C89 we need to initialize the member declared first. 6346 * In C++ we need extern C initializers. 6347 * 6348 * With the U8_NV version you will want to have inner braces, 6349 * while with the NV_U8 use just the NV. */ 6350 6351 #define INFNAN_U8_NV_DECL EXTCONST union { U8 u8[NVSIZE]; NV nv; } 6352 #define INFNAN_NV_U8_DECL EXTCONST union { NV nv; U8 u8[NVSIZE]; } 6353 6354 /* if these never got defined, they need defaults */ 6355 #ifndef PERL_SET_CONTEXT 6356 # define PERL_SET_CONTEXT(i) PERL_SET_INTERP(i) 6357 #endif 6358 6359 #ifdef USE_PERL_SWITCH_LOCALE_CONTEXT 6360 # define PERL_SET_LOCALE_CONTEXT(i) \ 6361 STMT_START { \ 6362 if (LIKELY(! PL_veto_switch_non_tTHX_context)) \ 6363 Perl_switch_locale_context(i); \ 6364 } STMT_END 6365 6366 /* In some Configurations there may be per-thread information that is 6367 * carried in a library instead of perl's tTHX structure. This macro is to 6368 * be used to handle those when tTHX is changed. Only locale handling is 6369 * currently known to be affected. */ 6370 # define PERL_SET_NON_tTHX_CONTEXT(i) \ 6371 STMT_START { if (i) PERL_SET_LOCALE_CONTEXT(i); } STMT_END 6372 #else 6373 # define PERL_SET_LOCALE_CONTEXT(i) NOOP 6374 # define PERL_SET_NON_tTHX_CONTEXT(i) NOOP 6375 #endif 6376 6377 #ifndef PERL_GET_CONTEXT 6378 # define PERL_GET_CONTEXT PERL_GET_INTERP 6379 #endif 6380 6381 #ifndef PERL_GET_THX 6382 # define PERL_GET_THX ((void*)NULL) 6383 #endif 6384 6385 #ifndef PERL_SET_THX 6386 # define PERL_SET_THX(t) NOOP 6387 #endif 6388 6389 #ifdef WIN32 6390 /* Windows mutexes are all general semaphores; we don't currently bother 6391 * with reproducing the same panic behavior as on other systems */ 6392 # define PERL_REENTRANT_LOCK(name, mutex, counter, \ 6393 cond_to_panic_if_already_locked) \ 6394 MUTEX_LOCK(mutex) 6395 # define PERL_REENTRANT_UNLOCK(name, mutex, counter) MUTEX_UNLOCK(mutex) 6396 #else 6397 6398 /* Simulate a general (or recursive) semaphore on 'mutex' whose name will 6399 * be displayed as 'name' in any messages. There must be a per-thread 6400 * variable 'counter', initialized to 0 upon thread creation that this 6401 * macro otherwise controls and keeps set to the recursion depth of the 6402 * mutex. 'cond_to_panic_if_already_locked' should be set to '0' for a 6403 * fully reentrant semaphore. Otherwise set it to a bit of code which will 6404 * be evaluated if the macro is called recursively. If it evaluates to 6405 * 'true', it means something is seriously wrong, and the process panics. 6406 * 6407 * It locks the mutex if the 'counter' is zero, and then increments 6408 * 'counter'. Each corresponding UNLOCK decrements 'counter' until it is 6409 * 0, at which point it actually unlocks the mutex. Since the variable is 6410 * per-thread, initialized to 0, there is no race with other threads. 6411 * 6412 * Clang improperly gives warnings for this, if not silenced: 6413 * https://clang.llvm.org/docs/ThreadSafetyAnalysis.html#conditional-locks 6414 */ 6415 # define PERL_REENTRANT_LOCK(name, mutex, counter, \ 6416 cond_to_panic_if_already_locked) \ 6417 STMT_START { \ 6418 CLANG_DIAG_IGNORE(-Wthread-safety) \ 6419 if (LIKELY(counter <= 0)) { \ 6420 UNLESS_PERL_MEM_LOG(DEBUG_Lv(PerlIO_printf(Perl_debug_log, \ 6421 "%s: %d: locking " name "; lock depth=1\n", \ 6422 __FILE__, __LINE__)); \ 6423 ) \ 6424 MUTEX_LOCK(mutex); \ 6425 counter = 1; \ 6426 UNLESS_PERL_MEM_LOG(DEBUG_Lv(PerlIO_printf(Perl_debug_log, \ 6427 "%s: %d: " name " locked; lock depth=1\n", \ 6428 __FILE__, __LINE__)); \ 6429 ) \ 6430 } \ 6431 else { \ 6432 counter++; \ 6433 UNLESS_PERL_MEM_LOG(DEBUG_Lv(PerlIO_printf(Perl_debug_log, \ 6434 "%s: %d: avoided locking " name "; new lock" \ 6435 " depth=%d, but will panic if '%s' is true\n", \ 6436 __FILE__, __LINE__, counter, \ 6437 STRINGIFY(cond_to_panic_if_already_locked))); \ 6438 ) \ 6439 if (cond_to_panic_if_already_locked) { \ 6440 Perl_croak_nocontext("panic: %s: %d: attempting to lock" \ 6441 name " incompatibly: %s\n", \ 6442 __FILE__, __LINE__, \ 6443 STRINGIFY(cond_to_panic_if_already_locked));\ 6444 } \ 6445 } \ 6446 CLANG_DIAG_RESTORE \ 6447 } STMT_END 6448 6449 # define PERL_REENTRANT_UNLOCK(name, mutex, counter) \ 6450 STMT_START { \ 6451 if (LIKELY(counter == 1)) { \ 6452 UNLESS_PERL_MEM_LOG(DEBUG_Lv(PerlIO_printf(Perl_debug_log, \ 6453 "%s: %d: unlocking " name "; new lock depth=0\n", \ 6454 __FILE__, __LINE__)); \ 6455 ) \ 6456 counter = 0; \ 6457 MUTEX_UNLOCK(mutex); \ 6458 } \ 6459 else if (counter <= 0) { \ 6460 Perl_croak_nocontext("panic: %s: %d: attempting to unlock" \ 6461 " already unlocked " name "; depth was" \ 6462 " %d\n", __FILE__, __LINE__, \ 6463 counter); \ 6464 } \ 6465 else { \ 6466 counter--; \ 6467 UNLESS_PERL_MEM_LOG(DEBUG_Lv(PerlIO_printf(Perl_debug_log, \ 6468 "%s: %d: avoided unlocking " name "; new lock depth=%d\n", \ 6469 __FILE__, __LINE__, counter)); \ 6470 ) \ 6471 } \ 6472 } STMT_END 6473 6474 #endif 6475 6476 #ifndef EBCDIC 6477 6478 /* The tables below are adapted from 6479 * https://bjoern.hoehrmann.de/utf-8/decoder/dfa/, which requires this copyright 6480 * notice: 6481 6482 Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de> 6483 6484 Permission is hereby granted, free of charge, to any person obtaining a copy of 6485 this software and associated documentation files (the "Software"), to deal in 6486 the Software without restriction, including without limitation the rights to 6487 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies 6488 of the Software, and to permit persons to whom the Software is furnished to do 6489 so, subject to the following conditions: 6490 6491 The above copyright notice and this permission notice shall be included in all 6492 copies or substantial portions of the Software. 6493 6494 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 6495 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 6496 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 6497 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 6498 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 6499 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 6500 SOFTWARE. 6501 6502 */ 6503 6504 # ifdef DOINIT 6505 # if 0 /* This is the original table given in 6506 https://bjoern.hoehrmann.de/utf-8/decoder/dfa/ */ 6507 static U8 utf8d_C9[] = { 6508 /* The first part of the table maps bytes to character classes that 6509 * to reduce the size of the transition table and create bitmasks. */ 6510 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /*-1F*/ 6511 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /*-3F*/ 6512 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /*-5F*/ 6513 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /*-7F*/ 6514 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, /*-9F*/ 6515 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, /*-BF*/ 6516 8,8,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, /*-DF*/ 6517 10,3,3,3,3,3,3,3,3,3,3,3,3,4,3,3, 11,6,6,6,5,8,8,8,8,8,8,8,8,8,8,8, /*-FF*/ 6518 6519 /* The second part is a transition table that maps a combination 6520 * of a state of the automaton and a character class to a state. */ 6521 0,12,24,36,60,96,84,12,12,12,48,72, 12,12,12,12,12,12,12,12,12,12,12,12, 6522 12, 0,12,12,12,12,12, 0,12, 0,12,12, 12,24,12,12,12,12,12,24,12,24,12,12, 6523 12,12,12,12,12,12,12,24,12,12,12,12, 12,24,12,12,12,12,12,12,12,24,12,12, 6524 12,12,12,12,12,12,12,36,12,36,12,12, 12,36,12,12,12,12,12,36,12,36,12,12, 6525 12,36,12,12,12,12,12,12,12,12,12,12 6526 }; 6527 6528 # endif 6529 6530 /* This is a version of the above table customized for Perl that doesn't 6531 * exclude surrogates and accepts start bytes up through FD (FE on 64-bit 6532 * machines). The classes have been renumbered so that the patterns are more 6533 * evident in the table. The class numbers are structured so the values are: 6534 * 6535 * a) UTF-8 invariant code points 6536 * 0 6537 * b) Start bytes that always lead to either overlongs or some class of code 6538 * point that needs outside intervention for handling (such as to raise a 6539 * warning) 6540 * 1 6541 * c) Start bytes that never lead to one of the above 6542 * number of bytes in complete sequence 6543 * d) Rest of start bytes (they can be resolved through this algorithm) and 6544 * continuation bytes 6545 * arbitrary class number chosen to not conflict with the above 6546 * classes, and to index into the remaining table 6547 * 6548 * It would make the code simpler if start byte FF could also be handled, but 6549 * doing so would mean adding two more classes (one from splitting 80 from 81, 6550 * and one for FF), and nodes for each of 6 new continuation bytes. The 6551 * current table has 436 entries; the new one would require 140 more = 576 (2 6552 * additional classes for each of the 10 existing nodes, and 20 for each of 6 6553 * new nodes. The array would have to be made U16 instead of U8, not worth it 6554 * for this rarely encountered case 6555 * 6556 * The classes are 6557 * 00-7F 0 Always legal, single byte sequence 6558 * 80-81 7 Not legal immediately after start bytes E0 F0 F8 FC 6559 * FE 6560 * 82-83 8 Not legal immediately after start bytes E0 F0 F8 FC 6561 * 84-87 9 Not legal immediately after start bytes E0 F0 F8 6562 * 88-8F 10 Not legal immediately after start bytes E0 F0 6563 * 90-9F 11 Not legal immediately after start byte E0 6564 * A0-BF 12 Always legal continuation byte 6565 * C0,C1 1 Not legal: overlong 6566 * C2-DF 2 Legal start byte for two byte sequences 6567 * E0 13 Some sequences are overlong; others legal 6568 * E1-EF 3 Legal start byte for three byte sequences 6569 * F0 14 Some sequences are overlong; others legal 6570 * F1-F7 4 Legal start byte for four byte sequences 6571 * F8 15 Some sequences are overlong; others legal 6572 * F9-FB 5 Legal start byte for five byte sequences 6573 * FC 16 Some sequences are overlong; others legal 6574 * FD 6 Legal start byte for six byte sequences 6575 * FE 17 Some sequences are overlong; others legal 6576 * (is 1 on 32-bit machines, since it overflows) 6577 * FF 1 Need to handle specially 6578 */ 6579 6580 EXTCONST U8 PL_extended_utf8_dfa_tab[] = { 6581 /* The first part of the table maps bytes to character classes to reduce 6582 * the size of the transition table and create bitmasks. */ 6583 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*00-0F*/ 6584 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*10-1F*/ 6585 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*20-2F*/ 6586 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*30-3F*/ 6587 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*40-4F*/ 6588 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*50-5F*/ 6589 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*60-6F*/ 6590 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*70-7F*/ 6591 7, 7, 8, 8, 9, 9, 9, 9,10,10,10,10,10,10,10,10, /*80-8F*/ 6592 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11, /*90-9F*/ 6593 12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12, /*A0-AF*/ 6594 12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12, /*B0-BF*/ 6595 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*C0-CF*/ 6596 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*D0-DF*/ 6597 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /*E0-EF*/ 6598 14, 4, 4, 4, 4, 4, 4, 4,15, 5, 5, 5,16, 6, /*F0-FD*/ 6599 # ifdef UV_IS_QUAD 6600 17, /*FE*/ 6601 # else 6602 1, /*FE*/ 6603 # endif 6604 1, /*FF*/ 6605 6606 /* The second part is a transition table that maps a combination 6607 * of a state of the automaton and a character class to a new state, called a 6608 * node. The nodes are: 6609 * N0 The initial state, and final accepting one. 6610 * N1 Any one continuation byte (80-BF) left. This is transitioned to 6611 * immediately when the start byte indicates a two-byte sequence 6612 * N2 Any two continuation bytes left. 6613 * N3 Any three continuation bytes left. 6614 * N4 Any four continuation bytes left. 6615 * N5 Any five continuation bytes left. 6616 * N6 Start byte is E0. Continuation bytes 80-9F are illegal (overlong); 6617 * the other continuations transition to N1 6618 * N7 Start byte is F0. Continuation bytes 80-8F are illegal (overlong); 6619 * the other continuations transition to N2 6620 * N8 Start byte is F8. Continuation bytes 80-87 are illegal (overlong); 6621 * the other continuations transition to N3 6622 * N9 Start byte is FC. Continuation bytes 80-83 are illegal (overlong); 6623 * the other continuations transition to N4 6624 * N10 Start byte is FE. Continuation bytes 80-81 are illegal (overlong); 6625 * the other continuations transition to N5 6626 * 1 Reject. All transitions not mentioned above (except the single 6627 * byte ones (as they are always legal)) are to this state. 6628 */ 6629 6630 # if defined(PERL_CORE) 6631 # define NUM_CLASSES 18 6632 # define N0 0 6633 # define N1 ((N0) + NUM_CLASSES) 6634 # define N2 ((N1) + NUM_CLASSES) 6635 # define N3 ((N2) + NUM_CLASSES) 6636 # define N4 ((N3) + NUM_CLASSES) 6637 # define N5 ((N4) + NUM_CLASSES) 6638 # define N6 ((N5) + NUM_CLASSES) 6639 # define N7 ((N6) + NUM_CLASSES) 6640 # define N8 ((N7) + NUM_CLASSES) 6641 # define N9 ((N8) + NUM_CLASSES) 6642 # define N10 ((N9) + NUM_CLASSES) 6643 6644 /*Class: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 */ 6645 /*N0*/ 0, 1,N1,N2,N3,N4,N5, 1, 1, 1, 1, 1, 1,N6,N7,N8,N9,N10, 6646 /*N1*/ 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 6647 /*N2*/ 1, 1, 1, 1, 1, 1, 1,N1,N1,N1,N1,N1,N1, 1, 1, 1, 1, 1, 6648 /*N3*/ 1, 1, 1, 1, 1, 1, 1,N2,N2,N2,N2,N2,N2, 1, 1, 1, 1, 1, 6649 /*N4*/ 1, 1, 1, 1, 1, 1, 1,N3,N3,N3,N3,N3,N3, 1, 1, 1, 1, 1, 6650 /*N5*/ 1, 1, 1, 1, 1, 1, 1,N4,N4,N4,N4,N4,N4, 1, 1, 1, 1, 1, 6651 6652 /*N6*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,N1, 1, 1, 1, 1, 1, 6653 /*N7*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,N2,N2, 1, 1, 1, 1, 1, 6654 /*N8*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,N3,N3,N3, 1, 1, 1, 1, 1, 6655 /*N9*/ 1, 1, 1, 1, 1, 1, 1, 1, 1,N4,N4,N4,N4, 1, 1, 1, 1, 1, 6656 /*N10*/ 1, 1, 1, 1, 1, 1, 1, 1,N5,N5,N5,N5,N5, 1, 1, 1, 1, 1, 6657 }; 6658 6659 /* And below is a version of the above table that accepts only strict UTF-8. 6660 * Hence no surrogates nor non-characters, nor non-Unicode. Thus, if the input 6661 * passes this dfa, it will be for a well-formed, non-problematic code point 6662 * that can be returned immediately. 6663 * 6664 * The "Implementation details" portion of 6665 * https://bjoern.hoehrmann.de/utf-8/decoder/dfa/ shows how 6666 * the first portion of the table maps each possible byte into a character 6667 * class. And that the classes for those bytes which are start bytes have been 6668 * carefully chosen so they serve as well to be used as a shift value to mask 6669 * off the leading 1 bits of the start byte. Unfortunately the addition of 6670 * being able to distinguish non-characters makes this not fully work. This is 6671 * because, now, the start bytes E1-EF have to be broken into 3 classes instead 6672 * of 2: 6673 * 1) ED because it could be a surrogate 6674 * 2) EF because it could be a non-character 6675 * 3) the rest, which can never evaluate to a problematic code point. 6676 * 6677 * Each of E1-EF has three leading 1 bits, then a 0. That means we could use a 6678 * shift (and hence class number) of either 3 or 4 to get a mask that works. 6679 * But that only allows two categories, and we need three. khw made the 6680 * decision to therefore treat the ED start byte as an error, so that the dfa 6681 * drops out immediately for that. In the dfa, classes 3 and 4 are used to 6682 * distinguish EF vs the rest. Then special code is used to deal with ED, 6683 * that's executed only when the dfa drops out. The code points started by ED 6684 * are half surrogates, and half hangul syllables. This means that 2048 of 6685 * the hangul syllables (about 18%) take longer than all other non-problematic 6686 * code points to handle. 6687 * 6688 * The changes to handle non-characters requires the addition of states and 6689 * classes to the dfa. (See the section on "Mapping bytes to character 6690 * classes" in the linked-to document for further explanation of the original 6691 * dfa.) 6692 * 6693 * The classes are 6694 * 00-7F 0 6695 * 80-8E 9 6696 * 8F 10 6697 * 90-9E 11 6698 * 9F 12 6699 * A0-AE 13 6700 * AF 14 6701 * B0-B6 15 6702 * B7 16 6703 * B8-BD 15 6704 * BE 17 6705 * BF 18 6706 * C0,C1 1 6707 * C2-DF 2 6708 * E0 7 6709 * E1-EC 3 6710 * ED 1 6711 * EE 3 6712 * EF 4 6713 * F0 8 6714 * F1-F3 6 (6 bits can be stripped) 6715 * F4 5 (only 5 can be stripped) 6716 * F5-FF 1 6717 */ 6718 6719 EXTCONST U8 PL_strict_utf8_dfa_tab[] = { 6720 /* The first part of the table maps bytes to character classes to reduce 6721 * the size of the transition table and create bitmasks. */ 6722 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*00-0F*/ 6723 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*10-1F*/ 6724 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*20-2F*/ 6725 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*30-3F*/ 6726 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*40-4F*/ 6727 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*50-5F*/ 6728 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*60-6F*/ 6729 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*70-7F*/ 6730 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,10, /*80-8F*/ 6731 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,12, /*90-9F*/ 6732 13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,14, /*A0-AF*/ 6733 15,15,15,15,15,15,15,16,15,15,15,15,15,15,17,18, /*B0-BF*/ 6734 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*C0-CF*/ 6735 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*D0-DF*/ 6736 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 3, 4, /*E0-EF*/ 6737 8, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /*F0-FF*/ 6738 6739 /* The second part is a transition table that maps a combination 6740 * of a state of the automaton and a character class to a new state, called a 6741 * node. The nodes are: 6742 * N0 The initial state, and final accepting one. 6743 * N1 Any one continuation byte (80-BF) left. This is transitioned to 6744 * immediately when the start byte indicates a two-byte sequence 6745 * N2 Any two continuation bytes left. 6746 * N3 Start byte is E0. Continuation bytes 80-9F are illegal (overlong); 6747 * the other continuations transition to state N1 6748 * N4 Start byte is EF. Continuation byte B7 transitions to N8; BF to N9; 6749 * the other continuations transitions to N1 6750 * N5 Start byte is F0. Continuation bytes 80-8F are illegal (overlong); 6751 * [9AB]F transition to N10; the other continuations to N2. 6752 * N6 Start byte is F[123]. Continuation bytes [89AB]F transition 6753 * to N10; the other continuations to N2. 6754 * N7 Start byte is F4. Continuation bytes 90-BF are illegal 6755 * (non-unicode); 8F transitions to N10; the other continuations to N2 6756 * N8 Initial sequence is EF B7. Continuation bytes 90-AF are illegal 6757 * (non-characters); the other continuations transition to N0. 6758 * N9 Initial sequence is EF BF. Continuation bytes BE and BF are illegal 6759 * (non-characters); the other continuations transition to N0. 6760 * N10 Initial sequence is one of: F0 [9-B]F; F[123] [8-B]F; or F4 8F. 6761 * Continuation byte BF transitions to N11; the other continuations to 6762 * N1 6763 * N11 Initial sequence is the two bytes given in N10 followed by BF. 6764 * Continuation bytes BE and BF are illegal (non-characters); the other 6765 * continuations transition to N0. 6766 * 1 Reject. All transitions not mentioned above (except the single 6767 * byte ones (as they are always legal) are to this state. 6768 */ 6769 6770 # undef N0 6771 # undef N1 6772 # undef N2 6773 # undef N3 6774 # undef N4 6775 # undef N5 6776 # undef N6 6777 # undef N7 6778 # undef N8 6779 # undef N9 6780 # undef NUM_CLASSES 6781 # define NUM_CLASSES 19 6782 # define N0 0 6783 # define N1 ((N0) + NUM_CLASSES) 6784 # define N2 ((N1) + NUM_CLASSES) 6785 # define N3 ((N2) + NUM_CLASSES) 6786 # define N4 ((N3) + NUM_CLASSES) 6787 # define N5 ((N4) + NUM_CLASSES) 6788 # define N6 ((N5) + NUM_CLASSES) 6789 # define N7 ((N6) + NUM_CLASSES) 6790 # define N8 ((N7) + NUM_CLASSES) 6791 # define N9 ((N8) + NUM_CLASSES) 6792 # define N10 ((N9) + NUM_CLASSES) 6793 # define N11 ((N10) + NUM_CLASSES) 6794 6795 /*Class: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 */ 6796 /*N0*/ 0, 1, N1, N2, N4, N7, N6, N3, N5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 6797 /*N1*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6798 /*N2*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, N1, N1, N1, N1, N1, N1, N1, 6799 6800 /*N3*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, N1, N1, N1, 6801 /*N4*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, N1, N1, N1, N1, N8, N1, N9, 6802 /*N5*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, N2,N10, N2,N10, N2, N2, N2,N10, 6803 /*N6*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N2,N10, N2,N10, N2,N10, N2, N2, N2,N10, 6804 /*N7*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N2,N10, 1, 1, 1, 1, 1, 1, 1, 1, 6805 /*N8*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 6806 /*N9*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 6807 /*N10*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, N1, N1, N1, N1, N1, N1,N11, 6808 /*N11*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 6809 }; 6810 6811 /* And below is yet another version of the above tables that accepts only UTF-8 6812 * as defined by Corregidum #9. Hence no surrogates nor non-Unicode, but 6813 * it allows non-characters. This is isomorphic to the original table 6814 * in https://bjoern.hoehrmann.de/utf-8/decoder/dfa/ 6815 * 6816 * The classes are 6817 * 00-7F 0 6818 * 80-8F 9 6819 * 90-9F 10 6820 * A0-BF 11 6821 * C0,C1 1 6822 * C2-DF 2 6823 * E0 7 6824 * E1-EC 3 6825 * ED 4 6826 * EE-EF 3 6827 * F0 8 6828 * F1-F3 6 (6 bits can be stripped) 6829 * F4 5 (only 5 can be stripped) 6830 * F5-FF 1 6831 */ 6832 6833 EXTCONST U8 PL_c9_utf8_dfa_tab[] = { 6834 /* The first part of the table maps bytes to character classes to reduce 6835 * the size of the transition table and create bitmasks. */ 6836 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*00-0F*/ 6837 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*10-1F*/ 6838 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*20-2F*/ 6839 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*30-3F*/ 6840 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*40-4F*/ 6841 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*50-5F*/ 6842 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*60-6F*/ 6843 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*70-7F*/ 6844 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, /*80-8F*/ 6845 10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10, /*90-9F*/ 6846 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11, /*A0-AF*/ 6847 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11, /*B0-BF*/ 6848 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*C0-CF*/ 6849 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*D0-DF*/ 6850 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 3, 3, /*E0-EF*/ 6851 8, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /*F0-FF*/ 6852 6853 /* The second part is a transition table that maps a combination 6854 * of a state of the automaton and a character class to a new state, called a 6855 * node. The nodes are: 6856 * N0 The initial state, and final accepting one. 6857 * N1 Any one continuation byte (80-BF) left. This is transitioned to 6858 * immediately when the start byte indicates a two-byte sequence 6859 * N2 Any two continuation bytes left. 6860 * N3 Any three continuation bytes left. 6861 * N4 Start byte is E0. Continuation bytes 80-9F are illegal (overlong); 6862 * the other continuations transition to state N1 6863 * N5 Start byte is ED. Continuation bytes A0-BF all lead to surrogates, 6864 * so are illegal. The other continuations transition to state N1. 6865 * N6 Start byte is F0. Continuation bytes 80-8F are illegal (overlong); 6866 * the other continuations transition to N2 6867 * N7 Start byte is F4. Continuation bytes 90-BF are illegal 6868 * (non-unicode); the other continuations transition to N2 6869 * 1 Reject. All transitions not mentioned above (except the single 6870 * byte ones (as they are always legal) are to this state. 6871 */ 6872 6873 # undef N0 6874 # undef N1 6875 # undef N2 6876 # undef N3 6877 # undef N4 6878 # undef N5 6879 # undef N6 6880 # undef N7 6881 # undef NUM_CLASSES 6882 # define NUM_CLASSES 12 6883 # define N0 0 6884 # define N1 ((N0) + NUM_CLASSES) 6885 # define N2 ((N1) + NUM_CLASSES) 6886 # define N3 ((N2) + NUM_CLASSES) 6887 # define N4 ((N3) + NUM_CLASSES) 6888 # define N5 ((N4) + NUM_CLASSES) 6889 # define N6 ((N5) + NUM_CLASSES) 6890 # define N7 ((N6) + NUM_CLASSES) 6891 6892 /*Class: 0 1 2 3 4 5 6 7 8 9 10 11 */ 6893 /*N0*/ 0, 1, N1, N2, N5, N7, N3, N4, N6, 1, 1, 1, 6894 /*N1*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 6895 /*N2*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, 6896 /*N3*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N2, N2, N2, 6897 6898 /*N4*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, 6899 /*N5*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, 1, 6900 /*N6*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, N2, N2, 6901 /*N7*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N2, 1, 1, 6902 }; 6903 6904 # endif /* defined(PERL_CORE) */ 6905 # else /* End of is DOINIT */ 6906 6907 EXTCONST U8 PL_extended_utf8_dfa_tab[]; 6908 EXTCONST U8 PL_strict_utf8_dfa_tab[]; 6909 EXTCONST U8 PL_c9_utf8_dfa_tab[]; 6910 6911 # endif 6912 #endif /* end of isn't EBCDIC */ 6913 6914 #include "overload.h" 6915 6916 END_EXTERN_C 6917 6918 struct am_table { 6919 U8 flags; 6920 U8 fallback; 6921 U16 spare; 6922 U32 was_ok_sub; 6923 CV* table[NofAMmeth]; 6924 }; 6925 struct am_table_short { 6926 U8 flags; 6927 U8 fallback; 6928 U16 spare; 6929 U32 was_ok_sub; 6930 }; 6931 typedef struct am_table AMT; 6932 typedef struct am_table_short AMTS; 6933 6934 #define AMGfallNEVER 1 6935 #define AMGfallNO 2 6936 #define AMGfallYES 3 6937 6938 #define AMTf_AMAGIC 1 6939 #define AMT_AMAGIC(amt) ((amt)->flags & AMTf_AMAGIC) 6940 #define AMT_AMAGIC_on(amt) ((amt)->flags |= AMTf_AMAGIC) 6941 #define AMT_AMAGIC_off(amt) ((amt)->flags &= ~AMTf_AMAGIC) 6942 6943 #define StashHANDLER(stash,meth) gv_handler((stash),CAT2(meth,_amg)) 6944 6945 /* 6946 * some compilers like to redefine cos et alia as faster 6947 * (and less accurate?) versions called F_cos et cetera (Quidquid 6948 * latine dictum sit, altum viditur.) This trick collides with 6949 * the Perl overloading (amg). The following #defines fool both. 6950 */ 6951 6952 #ifdef _FASTMATH 6953 # ifdef atan2 6954 # define F_atan2_amg atan2_amg 6955 # endif 6956 # ifdef cos 6957 # define F_cos_amg cos_amg 6958 # endif 6959 # ifdef exp 6960 # define F_exp_amg exp_amg 6961 # endif 6962 # ifdef log 6963 # define F_log_amg log_amg 6964 # endif 6965 # ifdef pow 6966 # define F_pow_amg pow_amg 6967 # endif 6968 # ifdef sin 6969 # define F_sin_amg sin_amg 6970 # endif 6971 # ifdef sqrt 6972 # define F_sqrt_amg sqrt_amg 6973 # endif 6974 #endif /* _FASTMATH */ 6975 6976 #define PERLDB_ALL (PERLDBf_SUB | PERLDBf_LINE | \ 6977 PERLDBf_NOOPT | PERLDBf_INTER | \ 6978 PERLDBf_SUBLINE| PERLDBf_SINGLE| \ 6979 PERLDBf_NAMEEVAL| PERLDBf_NAMEANON | \ 6980 PERLDBf_SAVESRC) 6981 /* No _NONAME, _GOTO */ 6982 #define PERLDBf_SUB 0x01 /* Debug sub enter/exit */ 6983 #define PERLDBf_LINE 0x02 /* Keep line # */ 6984 #define PERLDBf_NOOPT 0x04 /* Switch off optimizations */ 6985 #define PERLDBf_INTER 0x08 /* Preserve more data for 6986 later inspections */ 6987 #define PERLDBf_SUBLINE 0x10 /* Keep subr source lines */ 6988 #define PERLDBf_SINGLE 0x20 /* Start with single-step on */ 6989 #define PERLDBf_NONAME 0x40 /* For _SUB: no name of the subr */ 6990 #define PERLDBf_GOTO 0x80 /* Report goto: call DB::goto */ 6991 #define PERLDBf_NAMEEVAL 0x100 /* Informative names for evals */ 6992 #define PERLDBf_NAMEANON 0x200 /* Informative names for anon subs */ 6993 #define PERLDBf_SAVESRC 0x400 /* Save source lines into @{"_<$filename"} */ 6994 #define PERLDBf_SAVESRC_NOSUBS 0x800 /* Including evals that generate no subroutines */ 6995 #define PERLDBf_SAVESRC_INVALID 0x1000 /* Save source that did not compile */ 6996 6997 #define PERLDB_SUB (PL_perldb & PERLDBf_SUB) 6998 #define PERLDB_LINE (PL_perldb & PERLDBf_LINE) 6999 #define PERLDB_NOOPT (PL_perldb & PERLDBf_NOOPT) 7000 #define PERLDB_INTER (PL_perldb & PERLDBf_INTER) 7001 #define PERLDB_SUBLINE (PL_perldb & PERLDBf_SUBLINE) 7002 #define PERLDB_SINGLE (PL_perldb & PERLDBf_SINGLE) 7003 #define PERLDB_SUB_NN (PL_perldb & PERLDBf_NONAME) 7004 #define PERLDB_GOTO (PL_perldb & PERLDBf_GOTO) 7005 #define PERLDB_NAMEEVAL (PL_perldb & PERLDBf_NAMEEVAL) 7006 #define PERLDB_NAMEANON (PL_perldb & PERLDBf_NAMEANON) 7007 #define PERLDB_SAVESRC (PL_perldb & PERLDBf_SAVESRC) 7008 #define PERLDB_SAVESRC_NOSUBS (PL_perldb & PERLDBf_SAVESRC_NOSUBS) 7009 #define PERLDB_SAVESRC_INVALID (PL_perldb & PERLDBf_SAVESRC_INVALID) 7010 7011 #define PERLDB_LINE_OR_SAVESRC (PL_perldb & (PERLDBf_LINE | PERLDBf_SAVESRC)) 7012 7013 #ifdef USE_THREADS 7014 # define KEYWORD_PLUGIN_MUTEX_INIT MUTEX_INIT(&PL_keyword_plugin_mutex) 7015 # define KEYWORD_PLUGIN_MUTEX_LOCK MUTEX_LOCK(&PL_keyword_plugin_mutex) 7016 # define KEYWORD_PLUGIN_MUTEX_UNLOCK MUTEX_UNLOCK(&PL_keyword_plugin_mutex) 7017 # define KEYWORD_PLUGIN_MUTEX_TERM MUTEX_DESTROY(&PL_keyword_plugin_mutex) 7018 # define USER_PROP_MUTEX_INIT MUTEX_INIT(&PL_user_prop_mutex) 7019 # define USER_PROP_MUTEX_LOCK MUTEX_LOCK(&PL_user_prop_mutex) 7020 # define USER_PROP_MUTEX_UNLOCK MUTEX_UNLOCK(&PL_user_prop_mutex) 7021 # define USER_PROP_MUTEX_TERM MUTEX_DESTROY(&PL_user_prop_mutex) 7022 #else 7023 # define KEYWORD_PLUGIN_MUTEX_INIT NOOP 7024 # define KEYWORD_PLUGIN_MUTEX_LOCK NOOP 7025 # define KEYWORD_PLUGIN_MUTEX_UNLOCK NOOP 7026 # define KEYWORD_PLUGIN_MUTEX_TERM NOOP 7027 # define USER_PROP_MUTEX_INIT NOOP 7028 # define USER_PROP_MUTEX_LOCK NOOP 7029 # define USER_PROP_MUTEX_UNLOCK NOOP 7030 # define USER_PROP_MUTEX_TERM NOOP 7031 #endif 7032 7033 #ifdef USE_THREADS 7034 # define ENV_LOCK PERL_WRITE_LOCK(&PL_env_mutex) 7035 # define ENV_UNLOCK PERL_WRITE_UNLOCK(&PL_env_mutex) 7036 # define ENV_READ_LOCK PERL_READ_LOCK(&PL_env_mutex) 7037 # define ENV_READ_UNLOCK PERL_READ_UNLOCK(&PL_env_mutex) 7038 # define ENV_INIT PERL_RW_MUTEX_INIT(&PL_env_mutex) 7039 # define ENV_TERM PERL_RW_MUTEX_DESTROY(&PL_env_mutex) 7040 7041 /* On platforms where the static buffer contained in getenv() is per-thread 7042 * rather than process-wide, another thread executing a getenv() at the same 7043 * time won't destroy ours before we have copied the result safely away and 7044 * unlocked the mutex. On such platforms (which is most), we can have many 7045 * readers of the environment at the same time. */ 7046 # ifdef GETENV_PRESERVES_OTHER_THREAD 7047 # define GETENV_LOCK ENV_READ_LOCK 7048 # define GETENV_UNLOCK ENV_READ_UNLOCK 7049 # else 7050 /* If, on the other hand, another thread could zap our getenv() return, we 7051 * need to keep them from executing until we are done */ 7052 # define GETENV_LOCK ENV_LOCK 7053 # define GETENV_UNLOCK ENV_UNLOCK 7054 # endif 7055 #else 7056 # define ENV_LOCK NOOP 7057 # define ENV_UNLOCK NOOP 7058 # define ENV_READ_LOCK NOOP 7059 # define ENV_READ_UNLOCK NOOP 7060 # define ENV_INIT NOOP 7061 # define ENV_TERM NOOP 7062 # define GETENV_LOCK NOOP 7063 # define GETENV_UNLOCK NOOP 7064 #endif 7065 7066 /* Locale/thread synchronization macros. */ 7067 #if ! defined(USE_LOCALE_THREADS) /* No threads, or no locales */ 7068 # define LOCALE_LOCK_(cond) NOOP 7069 # define LOCALE_UNLOCK_ NOOP 7070 # define LOCALE_LOCK NOOP 7071 # define LOCALE_UNLOCK NOOP 7072 #else /* Below: Threaded, and locales are supported */ 7073 7074 /* A locale mutex is required on all such threaded builds for at least 7075 * situations where there is a global static buffer. This base lock that 7076 * handles these has a trailing underscore in the name */ 7077 # define LOCALE_LOCK_(cond_to_panic_if_already_locked) \ 7078 PERL_REENTRANT_LOCK("locale", \ 7079 &PL_locale_mutex, PL_locale_mutex_depth, \ 7080 cond_to_panic_if_already_locked) 7081 # define LOCALE_UNLOCK_ \ 7082 PERL_REENTRANT_UNLOCK("locale", \ 7083 &PL_locale_mutex, PL_locale_mutex_depth) 7084 # ifdef USE_THREAD_SAFE_LOCALE 7085 /* But for most situations, we use the macro name without a trailing 7086 * underscore. 7087 * 7088 * In locale thread-safe Configurations, typical operations don't need 7089 * locking */ 7090 # define LOCALE_LOCK NOOP 7091 # define LOCALE_UNLOCK NOOP 7092 # else 7093 /* Whereas, thread-unsafe Configurations always requires locking */ 7094 # define LOCALE_LOCK_DOES_SOMETHING_ 7095 # define LOCALE_LOCK LOCALE_LOCK_(0) 7096 # define LOCALE_UNLOCK LOCALE_UNLOCK_ 7097 # ifdef USE_LOCALE_NUMERIC 7098 # define LC_NUMERIC_LOCK(cond_to_panic_if_already_locked) \ 7099 LOCALE_LOCK_(cond_to_panic_if_already_locked) 7100 # define LC_NUMERIC_UNLOCK LOCALE_UNLOCK_ 7101 # endif 7102 # endif 7103 #endif 7104 7105 /* There are some locale-related functions which may need locking only because 7106 * they share some common memory across threads, and hence there is the 7107 * potential for a race in accessing that space. Most are because their return 7108 * points to a global static buffer, but some just use some common space 7109 * internally. All functions accessing a given space need to have a critical 7110 * section to prevent any other thread from accessing it at the same time. 7111 * Ideally, there would be a separate mutex for each such space, so that 7112 * another thread isn't unnecessarily blocked. But, most of them need to be 7113 * locked against the locale changing while accessing that space, and it is not 7114 * expected that any will be called frequently, and the locked interval should 7115 * be short, and modern platforms will have reentrant versions (which don't 7116 * lock) for almost all of them, so khw thinks a single mutex should suffice. 7117 * Having a single mutex facilitates that, avoiding potential deadlock 7118 * situations. 7119 * 7120 * This will be a no-op iff the perl is unthreaded. 'gw' stands for 'global 7121 * write', to indicate the caller wants to be able to access memory that isn't 7122 * thread specific, either to write to itself, or to prevent anyone else from 7123 * writing. */ 7124 #define gwLOCALE_LOCK LOCALE_LOCK_(0) 7125 #define gwLOCALE_UNLOCK LOCALE_UNLOCK_ 7126 7127 /* Similar to gwLOCALE_LOCK, there are functions that require both the locale 7128 * and environment to be constant during their execution, and don't change 7129 * either of those things, but do write to some sort of shared global space. 7130 * They require some sort of exclusive lock against similar functions, and a 7131 * read lock on both the locale and environment. However, on systems which 7132 * have per-thread locales, the locale is constant during the execution of 7133 * these functions, and so no locale lock is necssary. For such systems, an 7134 * exclusive ENV lock is necessary and sufficient. On systems where the locale 7135 * could change out from under us, we use an exclusive LOCALE lock to prevent 7136 * that, and a read ENV lock to prevent other threads that have nothing to do 7137 * with locales here from changing the environment. */ 7138 #ifdef LOCALE_LOCK_DOES_SOMETHING 7139 # define gwENVr_LOCALEr_LOCK \ 7140 STMT_START { LOCALE_LOCK; ENV_READ_LOCK; } STMT_END 7141 # define gwENVr_LOCALEr_UNLOCK \ 7142 STMT_START { ENV_READ_UNLOCK; LOCALE_UNLOCK; } STMT_END 7143 #else 7144 # define gwENVr_LOCALEr_LOCK ENV_LOCK 7145 # define gwENVr_LOCALEr_UNLOCK ENV_UNLOCK 7146 #endif 7147 7148 /* On systems that don't have per-thread locales, even though we don't 7149 * think we are changing the locale ourselves, behind the scenes it does 7150 * get changed to whatever the thread's should be, so it has to be an 7151 * exclusive lock. By defining it here with this name, we can, for the 7152 * most part, hide this detail from the rest of the code */ 7153 /* Currently, the read lock is an exclusive lock */ 7154 #define LOCALE_READ_LOCK LOCALE_LOCK 7155 #define LOCALE_READ_UNLOCK LOCALE_UNLOCK 7156 7157 /* setlocale() generally returns in a global static buffer, but not on Windows 7158 * when operating in thread-safe mode */ 7159 #if defined(WIN32) && defined(USE_THREAD_SAFE_LOCALE) 7160 # define POSIX_SETLOCALE_LOCK \ 7161 STMT_START { \ 7162 if (_configthreadlocale(0) == _DISABLE_PER_THREAD_LOCALE) \ 7163 gwLOCALE_LOCK; \ 7164 } STMT_END 7165 # define POSIX_SETLOCALE_UNLOCK \ 7166 STMT_START { \ 7167 if (_configthreadlocale(0) == _DISABLE_PER_THREAD_LOCALE) \ 7168 gwLOCALE_UNLOCK; \ 7169 } STMT_END 7170 #else 7171 # define POSIX_SETLOCALE_LOCK gwLOCALE_LOCK 7172 # define POSIX_SETLOCALE_UNLOCK gwLOCALE_UNLOCK 7173 #endif 7174 7175 /* It handles _wsetlocale() as well */ 7176 #define WSETLOCALE_LOCK POSIX_SETLOCALE_LOCK 7177 #define WSETLOCALE_UNLOCK POSIX_SETLOCALE_UNLOCK 7178 7179 7180 #ifndef LC_NUMERIC_LOCK 7181 # define LC_NUMERIC_LOCK(cond) NOOP 7182 # define LC_NUMERIC_UNLOCK NOOP 7183 #endif 7184 7185 /* These non-reentrant versions use global space */ 7186 # define MBLEN_LOCK_ gwLOCALE_LOCK 7187 # define MBLEN_UNLOCK_ gwLOCALE_UNLOCK 7188 7189 # define MBTOWC_LOCK_ gwLOCALE_LOCK 7190 # define MBTOWC_UNLOCK_ gwLOCALE_UNLOCK 7191 7192 # define WCTOMB_LOCK_ gwLOCALE_LOCK 7193 # define WCTOMB_UNLOCK_ gwLOCALE_UNLOCK 7194 7195 /* Whereas the reentrant versions don't (assuming they are called with a 7196 * per-thread buffer; some have the capability of being called with a NULL 7197 * parameter, which defeats the reentrancy) */ 7198 # define MBRLEN_LOCK_ NOOP 7199 # define MBRLEN_UNLOCK_ NOOP 7200 # define MBRTOWC_LOCK_ NOOP 7201 # define MBRTOWC_UNLOCK_ NOOP 7202 # define WCRTOMB_LOCK_ NOOP 7203 # define WCRTOMB_UNLOCK_ NOOP 7204 7205 # define LC_COLLATE_LOCK LOCALE_LOCK 7206 # define LC_COLLATE_UNLOCK LOCALE_UNLOCK 7207 7208 /* Some critical sections need to lock both the locale and the environment from 7209 * changing, while allowing for any number of readers. To avoid deadlock, this 7210 * is always done in the same order. These should always be invoked, like all 7211 * locks really, at such a low level that its just a libc call that is wrapped, 7212 * so as to prevent recursive calls which could deadlock. */ 7213 #define ENVr_LOCALEr_LOCK \ 7214 STMT_START { LOCALE_READ_LOCK; ENV_READ_LOCK; } STMT_END 7215 #define ENVr_LOCALEr_UNLOCK \ 7216 STMT_START { ENV_READ_UNLOCK; LOCALE_READ_UNLOCK; } STMT_END 7217 7218 #define STRFTIME_LOCK ENVr_LOCALEr_LOCK 7219 #define STRFTIME_UNLOCK ENVr_LOCALEr_UNLOCK 7220 7221 /* These time-related functions all requre that the environment and locale 7222 * don't change while they are executing (at least in glibc; this appears to be 7223 * contrary to the POSIX standard). tzset() writes global variables, so 7224 * always needs to have write locking. ctime, localtime, mktime, and strftime 7225 * effectively call it, so they too need exclusive access. The rest need to 7226 * have exclusive locking as well so that they can copy the contents of the 7227 * returned static buffer before releasing the lock. That leaves asctime and 7228 * gmtime. There may be reentrant versions of these available on the platform 7229 * which don't require write locking. 7230 */ 7231 #ifdef PERL_REENTR_USING_ASCTIME_R 7232 # define ASCTIME_LOCK ENVr_LOCALEr_LOCK 7233 # define ASCTIME_UNLOCK ENVr_LOCALEr_UNLOCK 7234 #else 7235 # define ASCTIME_LOCK gwENVr_LOCALEr_LOCK 7236 # define ASCTIME_UNLOCK gwENVr_LOCALEr_UNLOCK 7237 #endif 7238 7239 #define CTIME_LOCK gwENVr_LOCALEr_LOCK 7240 #define CTIME_UNLOCK gwENVr_LOCALEr_UNLOCK 7241 7242 #ifdef PERL_REENTR_USING_GMTIME_R 7243 # define GMTIME_LOCK ENVr_LOCALEr_LOCK 7244 # define GMTIME_UNLOCK ENVr_LOCALEr_UNLOCK 7245 #else 7246 # define GMTIME_LOCK gwENVr_LOCALEr_LOCK 7247 # define GMTIME_UNLOCK gwENVr_LOCALEr_UNLOCK 7248 #endif 7249 7250 #define LOCALTIME_LOCK gwENVr_LOCALEr_LOCK 7251 #define LOCALTIME_UNLOCK gwENVr_LOCALEr_UNLOCK 7252 #define MKTIME_LOCK gwENVr_LOCALEr_LOCK 7253 #define MKTIME_UNLOCK gwENVr_LOCALEr_UNLOCK 7254 #define TZSET_LOCK gwENVr_LOCALEr_LOCK 7255 #define TZSET_UNLOCK gwENVr_LOCALEr_UNLOCK 7256 7257 /* Similiarly, these functions need a constant environment and/or locale. And 7258 * some have a buffer that is shared with another thread executing the same or 7259 * a related call. A mutex could be created for each class, but for now, share 7260 * the ENV mutex with everything, as none probably gets called so much that 7261 * performance would suffer by a thread being locked out by another thread that 7262 * could have used a different mutex. 7263 * 7264 * But, create a different macro name just to indicate the ones that don't 7265 * actually depend on the environment, but are using its mutex for want of a 7266 * better one */ 7267 #define gwLOCALEr_LOCK gwENVr_LOCALEr_LOCK 7268 #define gwLOCALEr_UNLOCK gwENVr_LOCALEr_UNLOCK 7269 7270 #ifdef PERL_REENTR_USING_GETHOSTBYADDR_R 7271 # define GETHOSTBYADDR_LOCK ENVr_LOCALEr_LOCK 7272 # define GETHOSTBYADDR_UNLOCK ENVr_LOCALEr_UNLOCK 7273 #else 7274 # define GETHOSTBYADDR_LOCK gwENVr_LOCALEr_LOCK 7275 # define GETHOSTBYADDR_UNLOCK gwENVr_LOCALEr_UNLOCK 7276 #endif 7277 #ifdef PERL_REENTR_USING_GETHOSTBYNAME_R 7278 # define GETHOSTBYNAME_LOCK ENVr_LOCALEr_LOCK 7279 # define GETHOSTBYNAME_UNLOCK ENVr_LOCALEr_UNLOCK 7280 #else 7281 # define GETHOSTBYNAME_LOCK gwENVr_LOCALEr_LOCK 7282 # define GETHOSTBYNAME_UNLOCK gwENVr_LOCALEr_UNLOCK 7283 #endif 7284 #ifdef PERL_REENTR_USING_GETNETBYADDR_R 7285 # define GETNETBYADDR_LOCK LOCALE_READ_LOCK 7286 # define GETNETBYADDR_UNLOCK LOCALE_READ_UNLOCK 7287 #else 7288 # define GETNETBYADDR_LOCK gwLOCALEr_LOCK 7289 # define GETNETBYADDR_UNLOCK gwLOCALEr_UNLOCK 7290 #endif 7291 #ifdef PERL_REENTR_USING_GETNETBYNAME_R 7292 # define GETNETBYNAME_LOCK LOCALE_READ_LOCK 7293 # define GETNETBYNAME_UNLOCK LOCALE_READ_UNLOCK 7294 #else 7295 # define GETNETBYNAME_LOCK gwLOCALEr_LOCK 7296 # define GETNETBYNAME_UNLOCK gwLOCALEr_UNLOCK 7297 #endif 7298 #ifdef PERL_REENTR_USING_GETPROTOBYNAME_R 7299 # define GETPROTOBYNAME_LOCK LOCALE_READ_LOCK 7300 # define GETPROTOBYNAME_UNLOCK LOCALE_READ_UNLOCK 7301 #else 7302 # define GETPROTOBYNAME_LOCK gwLOCALEr_LOCK 7303 # define GETPROTOBYNAME_UNLOCK gwLOCALEr_UNLOCK 7304 #endif 7305 #ifdef PERL_REENTR_USING_GETPROTOBYNUMBER_R 7306 # define GETPROTOBYNUMBER_LOCK LOCALE_READ_LOCK 7307 # define GETPROTOBYNUMBER_UNLOCK LOCALE_READ_UNLOCK 7308 #else 7309 # define GETPROTOBYNUMBER_LOCK gwLOCALEr_LOCK 7310 # define GETPROTOBYNUMBER_UNLOCK gwLOCALEr_UNLOCK 7311 #endif 7312 #ifdef PERL_REENTR_USING_GETPROTOENT_R 7313 # define GETPROTOENT_LOCK LOCALE_READ_LOCK 7314 # define GETPROTOENT_UNLOCK LOCALE_READ_UNLOCK 7315 #else 7316 # define GETPROTOENT_LOCK gwLOCALEr_LOCK 7317 # define GETPROTOENT_UNLOCK gwLOCALEr_UNLOCK 7318 #endif 7319 #ifdef PERL_REENTR_USING_GETPWNAM_R 7320 # define GETPWNAM_LOCK LOCALE_READ_LOCK 7321 # define GETPWNAM_UNLOCK LOCALE_READ_UNLOCK 7322 #else 7323 # define GETPWNAM_LOCK gwLOCALEr_LOCK 7324 # define GETPWNAM_UNLOCK gwLOCALEr_UNLOCK 7325 #endif 7326 #ifdef PERL_REENTR_USING_GETPWUID_R 7327 # define GETPWUID_LOCK LOCALE_READ_LOCK 7328 # define GETPWUID_UNLOCK LOCALE_READ_UNLOCK 7329 #else 7330 # define GETPWUID_LOCK gwLOCALEr_LOCK 7331 # define GETPWUID_UNLOCK gwLOCALEr_UNLOCK 7332 #endif 7333 #ifdef PERL_REENTR_USING_GETSERVBYNAME_R 7334 # define GETSERVBYNAME_LOCK LOCALE_READ_LOCK 7335 # define GETSERVBYNAME_UNLOCK LOCALE_READ_UNLOCK 7336 #else 7337 # define GETSERVBYNAME_LOCK gwLOCALEr_LOCK 7338 # define GETSERVBYNAME_UNLOCK gwLOCALEr_UNLOCK 7339 #endif 7340 #ifdef PERL_REENTR_USING_GETSERVBYPORT_R 7341 # define GETSERVBYPORT_LOCK LOCALE_READ_LOCK 7342 # define GETSERVBYPORT_UNLOCK LOCALE_READ_UNLOCK 7343 #else 7344 # define GETSERVBYPORT_LOCK gwLOCALEr_LOCK 7345 # define GETSERVBYPORT_UNLOCK gwLOCALEr_UNLOCK 7346 #endif 7347 #ifdef PERL_REENTR_USING_GETSERVENT_R 7348 # define GETSERVENT_LOCK LOCALE_READ_LOCK 7349 # define GETSERVENT_UNLOCK LOCALE_READ_UNLOCK 7350 #else 7351 # define GETSERVENT_LOCK gwLOCALEr_LOCK 7352 # define GETSERVENT_UNLOCK gwLOCALEr_UNLOCK 7353 #endif 7354 #ifdef PERL_REENTR_USING_GETSPNAM_R 7355 # define GETSPNAM_LOCK LOCALE_READ_LOCK 7356 # define GETSPNAM_UNLOCK LOCALE_READ_UNLOCK 7357 #else 7358 # define GETSPNAM_LOCK gwLOCALEr_LOCK 7359 # define GETSPNAM_UNLOCK gwLOCALEr_UNLOCK 7360 #endif 7361 7362 #define STRFMON_LOCK LC_MONETARY_LOCK 7363 #define STRFMON_UNLOCK LC_MONETARY_UNLOCK 7364 7365 /* End of locale/env synchronization */ 7366 7367 #if ! defined(USE_LOCALE_THREADS) 7368 # define LOCALE_INIT 7369 # define LOCALE_TERM 7370 #else 7371 # ifdef WIN32_USE_FAKE_OLD_MINGW_LOCALES 7372 /* This function is coerced by this Configure option into cleaning up 7373 * memory that is static to locale.c. So we call it at termination. Doing 7374 * it this way is kludgy but confines having to deal with this 7375 * Configuration to a bare minimum number of places. */ 7376 # define LOCALE_TERM_POSIX_2008_ Perl_thread_locale_term(NULL) 7377 # elif ! defined(USE_POSIX_2008_LOCALE) 7378 # define LOCALE_TERM_POSIX_2008_ NOOP 7379 # else 7380 /* We have a locale object holding the 'C' locale for Posix 2008 */ 7381 # define LOCALE_TERM_POSIX_2008_ \ 7382 STMT_START { \ 7383 if (PL_C_locale_obj) { \ 7384 /* Make sure we aren't using the locale \ 7385 * space we are about to free */ \ 7386 uselocale(LC_GLOBAL_LOCALE); \ 7387 freelocale(PL_C_locale_obj); \ 7388 PL_C_locale_obj = (locale_t) NULL; \ 7389 } \ 7390 } STMT_END 7391 # endif 7392 7393 # define LOCALE_INIT MUTEX_INIT(&PL_locale_mutex) 7394 # define LOCALE_TERM STMT_START { \ 7395 LOCALE_TERM_POSIX_2008_; \ 7396 MUTEX_DESTROY(&PL_locale_mutex); \ 7397 } STMT_END 7398 #endif 7399 7400 #ifdef USE_LOCALE /* These locale things are all subject to change */ 7401 7402 /* Returns TRUE if the plain locale pragma without a parameter is in effect. 7403 * */ 7404 # define IN_LOCALE_RUNTIME (PL_curcop \ 7405 && CopHINTS_get(PL_curcop) & HINT_LOCALE) 7406 7407 /* Returns TRUE if either form of the locale pragma is in effect */ 7408 # define IN_SOME_LOCALE_FORM_RUNTIME \ 7409 cBOOL(CopHINTS_get(PL_curcop) & (HINT_LOCALE|HINT_LOCALE_PARTIAL)) 7410 7411 # define IN_LOCALE_COMPILETIME cBOOL(PL_hints & HINT_LOCALE) 7412 # define IN_SOME_LOCALE_FORM_COMPILETIME \ 7413 cBOOL(PL_hints & (HINT_LOCALE|HINT_LOCALE_PARTIAL)) 7414 7415 /* 7416 =for apidoc_section $locale 7417 7418 =for apidoc Amn|bool|IN_LOCALE 7419 7420 Evaluates to TRUE if the plain locale pragma without a parameter (S<C<use 7421 locale>>) is in effect. 7422 7423 =for apidoc Amn|bool|IN_LOCALE_COMPILETIME 7424 7425 Evaluates to TRUE if, when compiling a perl program (including an C<eval>) if 7426 the plain locale pragma without a parameter (S<C<use locale>>) is in effect. 7427 7428 =for apidoc Amn|bool|IN_LOCALE_RUNTIME 7429 7430 Evaluates to TRUE if, when executing a perl program (including an C<eval>) if 7431 the plain locale pragma without a parameter (S<C<use locale>>) is in effect. 7432 7433 =cut 7434 */ 7435 7436 # define IN_LOCALE \ 7437 (IN_PERL_COMPILETIME ? IN_LOCALE_COMPILETIME : IN_LOCALE_RUNTIME) 7438 # define IN_SOME_LOCALE_FORM \ 7439 (IN_PERL_COMPILETIME ? IN_SOME_LOCALE_FORM_COMPILETIME \ 7440 : IN_SOME_LOCALE_FORM_RUNTIME) 7441 7442 # define IN_LC_ALL_COMPILETIME IN_LOCALE_COMPILETIME 7443 # define IN_LC_ALL_RUNTIME IN_LOCALE_RUNTIME 7444 7445 # define IN_LC_PARTIAL_COMPILETIME cBOOL(PL_hints & HINT_LOCALE_PARTIAL) 7446 # define IN_LC_PARTIAL_RUNTIME \ 7447 (PL_curcop && CopHINTS_get(PL_curcop) & HINT_LOCALE_PARTIAL) 7448 7449 # define IN_LC_COMPILETIME(category) \ 7450 ( IN_LC_ALL_COMPILETIME \ 7451 || ( IN_LC_PARTIAL_COMPILETIME \ 7452 && Perl__is_in_locale_category(aTHX_ TRUE, (category)))) 7453 # define IN_LC_RUNTIME(category) \ 7454 (IN_LC_ALL_RUNTIME || (IN_LC_PARTIAL_RUNTIME \ 7455 && Perl__is_in_locale_category(aTHX_ FALSE, (category)))) 7456 # define IN_LC(category) \ 7457 (IN_LC_COMPILETIME(category) || IN_LC_RUNTIME(category)) 7458 7459 # if defined (PERL_CORE) || defined (PERL_IN_XSUB_RE) || defined(PERL_EXT_POSIX) 7460 7461 /* This internal macro should be called from places that operate under 7462 * locale rules. If there is a problem with the current locale that 7463 * hasn't been raised yet, it will output a warning this time. Because 7464 * this will so rarely be true, there is no point to optimize for time; 7465 * instead it makes sense to minimize space used and do all the work in 7466 * the rarely called function */ 7467 # ifdef USE_LOCALE_CTYPE 7468 # define CHECK_AND_WARN_PROBLEMATIC_LOCALE_ \ 7469 STMT_START { \ 7470 if (UNLIKELY(PL_warn_locale)) { \ 7471 Perl_warn_problematic_locale(); \ 7472 } \ 7473 } STMT_END 7474 # else 7475 # define CHECK_AND_WARN_PROBLEMATIC_LOCALE_ 7476 # endif 7477 7478 7479 /* These two internal macros are called when a warning should be raised, 7480 * and will do so if enabled. The first takes a single code point 7481 * argument; the 2nd, is a pointer to the first byte of the UTF-8 encoded 7482 * string, and an end position which it won't try to read past */ 7483 # define _CHECK_AND_OUTPUT_WIDE_LOCALE_CP_MSG(cp) \ 7484 STMT_START { \ 7485 if (! IN_UTF8_CTYPE_LOCALE && ckWARN(WARN_LOCALE)) { \ 7486 Perl_warner(aTHX_ packWARN(WARN_LOCALE), \ 7487 "Wide character (U+%" UVXf ") in %s",\ 7488 (UV) cp, OP_DESC(PL_op)); \ 7489 } \ 7490 } STMT_END 7491 7492 # define _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(s, send) \ 7493 STMT_START { /* Check if to warn before doing the conversion work */\ 7494 if (! IN_UTF8_CTYPE_LOCALE && ckWARN(WARN_LOCALE)) { \ 7495 UV cp = utf8_to_uvchr_buf((U8 *) (s), (U8 *) (send), NULL); \ 7496 Perl_warner(aTHX_ packWARN(WARN_LOCALE), \ 7497 "Wide character (U+%" UVXf ") in %s", \ 7498 (cp == 0) \ 7499 ? UNICODE_REPLACEMENT \ 7500 : (UV) cp, \ 7501 OP_DESC(PL_op)); \ 7502 } \ 7503 } STMT_END 7504 7505 # endif /* PERL_CORE or PERL_IN_XSUB_RE */ 7506 #else /* No locale usage */ 7507 # define IN_LOCALE_RUNTIME 0 7508 # define IN_SOME_LOCALE_FORM_RUNTIME 0 7509 # define IN_LOCALE_COMPILETIME 0 7510 # define IN_SOME_LOCALE_FORM_COMPILETIME 0 7511 # define IN_LOCALE 0 7512 # define IN_SOME_LOCALE_FORM 0 7513 # define IN_LC_ALL_COMPILETIME 0 7514 # define IN_LC_ALL_RUNTIME 0 7515 # define IN_LC_PARTIAL_COMPILETIME 0 7516 # define IN_LC_PARTIAL_RUNTIME 0 7517 # define IN_LC_COMPILETIME(category) 0 7518 # define IN_LC_RUNTIME(category) 0 7519 # define IN_LC(category) 0 7520 # define CHECK_AND_WARN_PROBLEMATIC_LOCALE_ 7521 # define _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(s, send) 7522 # define _CHECK_AND_OUTPUT_WIDE_LOCALE_CP_MSG(c) 7523 #endif 7524 7525 #define locale_panic_via_(m, f, l) Perl_locale_panic((m), __LINE__, f, l) 7526 #define locale_panic_(m) locale_panic_via_((m), __FILE__, __LINE__) 7527 7528 #ifdef USE_LOCALE_NUMERIC 7529 7530 /* These macros are for toggling between the underlying locale (UNDERLYING or 7531 * LOCAL) and the C locale (STANDARD). (Actually we don't have to use the C 7532 * locale if the underlying locale is indistinguishable from it in the numeric 7533 * operations used by Perl, namely the decimal point, and even the thousands 7534 * separator.) 7535 7536 =for apidoc_section $locale 7537 7538 =for apidoc Amn|void|DECLARATION_FOR_LC_NUMERIC_MANIPULATION 7539 7540 This macro should be used as a statement. It declares a private variable 7541 (whose name begins with an underscore) that is needed by the other macros in 7542 this section. Failing to include this correctly should lead to a syntax error. 7543 For compatibility with C89 C compilers it should be placed in a block before 7544 any executable statements. 7545 7546 =for apidoc Am|void|STORE_LC_NUMERIC_FORCE_TO_UNDERLYING 7547 7548 This is used by XS code that is C<LC_NUMERIC> locale-aware to force the 7549 locale for category C<LC_NUMERIC> to be what perl thinks is the current 7550 underlying locale. (The perl interpreter could be wrong about what the 7551 underlying locale actually is if some C or XS code has called the C library 7552 function L<setlocale(3)> behind its back; calling L</sync_locale> before calling 7553 this macro will update perl's records.) 7554 7555 A call to L</DECLARATION_FOR_LC_NUMERIC_MANIPULATION> must have been made to 7556 declare at compile time a private variable used by this macro. This macro 7557 should be called as a single statement, not an expression, but with an empty 7558 argument list, like this: 7559 7560 { 7561 DECLARATION_FOR_LC_NUMERIC_MANIPULATION; 7562 ... 7563 STORE_LC_NUMERIC_FORCE_TO_UNDERLYING(); 7564 ... 7565 RESTORE_LC_NUMERIC(); 7566 ... 7567 } 7568 7569 The private variable is used to save the current locale state, so 7570 that the requisite matching call to L</RESTORE_LC_NUMERIC> can restore it. 7571 7572 On threaded perls not operating with thread-safe functionality, this macro uses 7573 a mutex to force a critical section. Therefore the matching RESTORE should be 7574 close by, and guaranteed to be called. 7575 7576 =for apidoc Am|void|STORE_LC_NUMERIC_SET_TO_NEEDED 7577 7578 This is used to help wrap XS or C code that is C<LC_NUMERIC> locale-aware. 7579 This locale category is generally kept set to a locale where the decimal radix 7580 character is a dot, and the separator between groups of digits is empty. This 7581 is because most XS code that reads floating point numbers is expecting them to 7582 have this syntax. 7583 7584 This macro makes sure the current C<LC_NUMERIC> state is set properly, to be 7585 aware of locale if the call to the XS or C code from the Perl program is 7586 from within the scope of a S<C<use locale>>; or to ignore locale if the call is 7587 instead from outside such scope. 7588 7589 This macro is the start of wrapping the C or XS code; the wrap ending is done 7590 by calling the L</RESTORE_LC_NUMERIC> macro after the operation. Otherwise 7591 the state can be changed that will adversely affect other XS code. 7592 7593 A call to L</DECLARATION_FOR_LC_NUMERIC_MANIPULATION> must have been made to 7594 declare at compile time a private variable used by this macro. This macro 7595 should be called as a single statement, not an expression, but with an empty 7596 argument list, like this: 7597 7598 { 7599 DECLARATION_FOR_LC_NUMERIC_MANIPULATION; 7600 ... 7601 STORE_LC_NUMERIC_SET_TO_NEEDED(); 7602 ... 7603 RESTORE_LC_NUMERIC(); 7604 ... 7605 } 7606 7607 On threaded perls not operating with thread-safe functionality, this macro uses 7608 a mutex to force a critical section. Therefore the matching RESTORE should be 7609 close by, and guaranteed to be called; see L</WITH_LC_NUMERIC_SET_TO_NEEDED> 7610 for a more contained way to ensure that. 7611 7612 =for apidoc Am|void|STORE_LC_NUMERIC_SET_TO_NEEDED_IN|bool in_lc_numeric 7613 7614 Same as L</STORE_LC_NUMERIC_SET_TO_NEEDED> with in_lc_numeric provided 7615 as the precalculated value of C<IN_LC(LC_NUMERIC)>. It is the caller's 7616 responsibility to ensure that the status of C<PL_compiling> and C<PL_hints> 7617 cannot have changed since the precalculation. 7618 7619 =for apidoc Am|void|RESTORE_LC_NUMERIC 7620 7621 This is used in conjunction with one of the macros 7622 L</STORE_LC_NUMERIC_SET_TO_NEEDED> 7623 and L</STORE_LC_NUMERIC_FORCE_TO_UNDERLYING> to properly restore the 7624 C<LC_NUMERIC> state. 7625 7626 A call to L</DECLARATION_FOR_LC_NUMERIC_MANIPULATION> must have been made to 7627 declare at compile time a private variable used by this macro and the two 7628 C<STORE> ones. This macro should be called as a single statement, not an 7629 expression, but with an empty argument list, like this: 7630 7631 { 7632 DECLARATION_FOR_LC_NUMERIC_MANIPULATION; 7633 ... 7634 RESTORE_LC_NUMERIC(); 7635 ... 7636 } 7637 7638 =for apidoc Am|void|WITH_LC_NUMERIC_SET_TO_NEEDED|block 7639 7640 This macro invokes the supplied statement or block within the context 7641 of a L</STORE_LC_NUMERIC_SET_TO_NEEDED> .. L</RESTORE_LC_NUMERIC> pair 7642 if required, so eg: 7643 7644 WITH_LC_NUMERIC_SET_TO_NEEDED( 7645 SNPRINTF_G(fv, ebuf, sizeof(ebuf), precis) 7646 ); 7647 7648 is equivalent to: 7649 7650 { 7651 #ifdef USE_LOCALE_NUMERIC 7652 DECLARATION_FOR_LC_NUMERIC_MANIPULATION; 7653 STORE_LC_NUMERIC_SET_TO_NEEDED(); 7654 #endif 7655 SNPRINTF_G(fv, ebuf, sizeof(ebuf), precis); 7656 #ifdef USE_LOCALE_NUMERIC 7657 RESTORE_LC_NUMERIC(); 7658 #endif 7659 } 7660 7661 =for apidoc Am|void|WITH_LC_NUMERIC_SET_TO_NEEDED_IN|bool in_lc_numeric|block 7662 7663 Same as L</WITH_LC_NUMERIC_SET_TO_NEEDED> with in_lc_numeric provided 7664 as the precalculated value of C<IN_LC(LC_NUMERIC)>. It is the caller's 7665 responsibility to ensure that the status of C<PL_compiling> and C<PL_hints> 7666 cannot have changed since the precalculation. 7667 7668 =cut 7669 7670 */ 7671 7672 /* If the underlying numeric locale has a non-dot decimal point or has a 7673 * non-empty floating point thousands separator, the current locale is instead 7674 * generally kept in the C locale instead of that underlying locale. The 7675 * current status is known by looking at two words. One is non-zero if the 7676 * current numeric locale is the standard C/POSIX one or is indistinguishable 7677 * from C. The other is non-zero if the current locale is the underlying 7678 * locale. Both can be non-zero if, as often happens, the underlying locale is 7679 * C or indistinguishable from it. 7680 * 7681 * khw believes the reason for the variables instead of the bits in a single 7682 * word is to avoid having to have masking instructions. */ 7683 7684 # define NOT_IN_NUMERIC_STANDARD_ (! PL_numeric_standard) 7685 7686 /* This macro is designed to be a helper macro when we think an operation needs 7687 * to take place in the underlying numeric locale category. When 'true', the 7688 * caller will attempt to toggle to that category. But a later addition was an 7689 * override that prevents that toggle when PL_numeric_standard >= 2. The name 7690 * of the macro was not changed when this was added. */ 7691 # define NOT_IN_NUMERIC_UNDERLYING_ \ 7692 (! PL_numeric_underlying && PL_numeric_standard < 2) 7693 7694 # define DECLARATION_FOR_LC_NUMERIC_MANIPULATION \ 7695 void (*_restore_LC_NUMERIC_function)(pTHX_ const char * const file, \ 7696 const line_t line) = NULL 7697 7698 # define STORE_LC_NUMERIC_SET_TO_NEEDED_IN(in) \ 7699 STMT_START { \ 7700 bool _in_lc_numeric = (in); \ 7701 LC_NUMERIC_LOCK( \ 7702 ( ( _in_lc_numeric && NOT_IN_NUMERIC_UNDERLYING_) \ 7703 || (! _in_lc_numeric && NOT_IN_NUMERIC_STANDARD_))); \ 7704 if (_in_lc_numeric) { \ 7705 if (NOT_IN_NUMERIC_UNDERLYING_) { \ 7706 Perl_set_numeric_underlying(aTHX_ __FILE__, __LINE__); \ 7707 _restore_LC_NUMERIC_function \ 7708 = &Perl_set_numeric_standard; \ 7709 } \ 7710 } \ 7711 else { \ 7712 if (NOT_IN_NUMERIC_STANDARD_) { \ 7713 Perl_set_numeric_standard(aTHX_ __FILE__, __LINE__); \ 7714 _restore_LC_NUMERIC_function \ 7715 = &Perl_set_numeric_underlying; \ 7716 } \ 7717 } \ 7718 } STMT_END 7719 7720 # define STORE_LC_NUMERIC_SET_TO_NEEDED() \ 7721 STORE_LC_NUMERIC_SET_TO_NEEDED_IN(IN_LC(LC_NUMERIC)) 7722 7723 # define RESTORE_LC_NUMERIC() \ 7724 STMT_START { \ 7725 if (_restore_LC_NUMERIC_function) { \ 7726 _restore_LC_NUMERIC_function(aTHX_ __FILE__, __LINE__); \ 7727 } \ 7728 LC_NUMERIC_UNLOCK; \ 7729 } STMT_END 7730 7731 /* The next two macros should be rarely used, and only after being sure that 7732 * this is what is needed */ 7733 # define SET_NUMERIC_STANDARD() \ 7734 STMT_START { \ 7735 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \ 7736 "%s: %d: lc_numeric standard=%d\n", \ 7737 __FILE__, __LINE__, PL_numeric_standard)); \ 7738 if (UNLIKELY(NOT_IN_NUMERIC_STANDARD_)) { \ 7739 Perl_set_numeric_standard(aTHX_ __FILE__, __LINE__); \ 7740 } \ 7741 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \ 7742 "%s: %d: lc_numeric standard=%d\n", \ 7743 __FILE__, __LINE__, PL_numeric_standard)); \ 7744 } STMT_END 7745 7746 # define SET_NUMERIC_UNDERLYING() \ 7747 STMT_START { \ 7748 /*assert(PL_locale_mutex_depth > 0);*/ \ 7749 if (NOT_IN_NUMERIC_UNDERLYING_) { \ 7750 Perl_set_numeric_underlying(aTHX_ __FILE__, __LINE__); \ 7751 } \ 7752 } STMT_END 7753 7754 /* The rest of these LC_NUMERIC macros toggle to one or the other state, with 7755 * the RESTORE_foo ones called to switch back, but only if need be */ 7756 # define STORE_LC_NUMERIC_SET_STANDARD() \ 7757 STMT_START { \ 7758 LC_NUMERIC_LOCK(NOT_IN_NUMERIC_STANDARD_); \ 7759 if (NOT_IN_NUMERIC_STANDARD_) { \ 7760 _restore_LC_NUMERIC_function = &Perl_set_numeric_underlying;\ 7761 Perl_set_numeric_standard(aTHX_ __FILE__, __LINE__); \ 7762 } \ 7763 } STMT_END 7764 7765 /* Rarely, we want to change to the underlying locale even outside of 'use 7766 * locale'. This is principally in the POSIX:: functions */ 7767 # define STORE_LC_NUMERIC_FORCE_TO_UNDERLYING() \ 7768 STMT_START { \ 7769 LC_NUMERIC_LOCK(NOT_IN_NUMERIC_UNDERLYING_); \ 7770 if (NOT_IN_NUMERIC_UNDERLYING_) { \ 7771 Perl_set_numeric_underlying(aTHX_ __FILE__, __LINE__); \ 7772 _restore_LC_NUMERIC_function = &Perl_set_numeric_standard; \ 7773 } \ 7774 } STMT_END 7775 7776 /* Lock/unlock changes to LC_NUMERIC. This needs to be recursively callable. 7777 * The highest level caller is responsible for making sure that LC_NUMERIC is 7778 * set to a locale with a dot radix character. These deliberately don't check 7779 * for the internal state being so, as they can be called from code that is not 7780 * party to the internal conventions, namely 'version' (vutil.c). 7781 * PL_numeric_standard changing doesn't affect anything about what locale is in 7782 * effect, etc. [perl #128207] */ 7783 # define DISABLE_LC_NUMERIC_CHANGES() \ 7784 STMT_START { \ 7785 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \ 7786 "%s: %d: lc_numeric_standard now locked to depth %d\n", \ 7787 __FILE__, __LINE__, PL_numeric_standard)); \ 7788 PL_numeric_standard++; \ 7789 } STMT_END 7790 7791 # define REENABLE_LC_NUMERIC_CHANGES() \ 7792 STMT_START { \ 7793 if (PL_numeric_standard > 1) { \ 7794 PL_numeric_standard--; \ 7795 } \ 7796 else { \ 7797 assert(0); \ 7798 } \ 7799 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \ 7800 "%s: %d: ", __FILE__, __LINE__); \ 7801 if (PL_numeric_standard <= 1) \ 7802 PerlIO_printf(Perl_debug_log, \ 7803 "lc_numeric_standard now unlocked\n");\ 7804 else PerlIO_printf(Perl_debug_log, \ 7805 "lc_numeric_standard lock decremented to depth %d\n", \ 7806 PL_numeric_standard););\ 7807 } STMT_END 7808 7809 /* Essentially synonyms for the above. The LOCK asserts at the top level that 7810 * we are in a locale equivalent to C. By including the top level, this can be 7811 * recursively called from chains which include DISABLE_LC_NUMERIC_CHANGES(). 7812 * */ 7813 # define LOCK_LC_NUMERIC_STANDARD() \ 7814 STMT_START { \ 7815 assert(PL_numeric_standard > 0 || PL_numeric_standard); \ 7816 DISABLE_LC_NUMERIC_CHANGES(); \ 7817 } STMT_END 7818 # define UNLOCK_LC_NUMERIC_STANDARD() REENABLE_LC_NUMERIC_CHANGES() 7819 7820 # define WITH_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric, block) \ 7821 STMT_START { \ 7822 DECLARATION_FOR_LC_NUMERIC_MANIPULATION; \ 7823 STORE_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric); \ 7824 block; \ 7825 RESTORE_LC_NUMERIC(); \ 7826 } STMT_END 7827 7828 # define WITH_LC_NUMERIC_SET_TO_NEEDED(block) \ 7829 WITH_LC_NUMERIC_SET_TO_NEEDED_IN(IN_LC(LC_NUMERIC), block) 7830 7831 #else /* !USE_LOCALE_NUMERIC */ 7832 7833 # define SET_NUMERIC_STANDARD() 7834 # define SET_NUMERIC_UNDERLYING() 7835 # define IS_NUMERIC_RADIX(a, b) (0) 7836 # define DECLARATION_FOR_LC_NUMERIC_MANIPULATION dNOOP 7837 # define STORE_LC_NUMERIC_SET_STANDARD() 7838 # define STORE_LC_NUMERIC_FORCE_TO_UNDERLYING() 7839 # define STORE_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric) 7840 # define STORE_LC_NUMERIC_SET_TO_NEEDED() 7841 # define RESTORE_LC_NUMERIC() 7842 # define LOCK_LC_NUMERIC_STANDARD() 7843 # define UNLOCK_LC_NUMERIC_STANDARD() 7844 # define DISABLE_LC_NUMERIC_CHANGES() 7845 # define REENABLE_LC_NUMERIC_CHANGES() 7846 # define WITH_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric, block) \ 7847 STMT_START { block; } STMT_END 7848 # define WITH_LC_NUMERIC_SET_TO_NEEDED(block) \ 7849 STMT_START { block; } STMT_END 7850 7851 #endif /* !USE_LOCALE_NUMERIC */ 7852 7853 #ifndef PERL_NO_INLINE_FUNCTIONS 7854 /* Static inline funcs that depend on includes and declarations above. 7855 Some of these reference functions in the perl object files, and some 7856 compilers aren't smart enough to eliminate unused static inline 7857 functions, so including this file in source code can cause link errors 7858 even if the source code uses none of the functions. Hence including these 7859 can be suppressed by setting PERL_NO_INLINE_FUNCTIONS. Doing this will 7860 (obviously) result in unworkable XS code, but allows simple probing code 7861 to continue to work, because it permits tests to include the perl headers 7862 for definitions without creating a link dependency on the perl library 7863 (which may not exist yet). 7864 */ 7865 7866 START_EXTERN_C 7867 7868 # include "perlstatic.h" 7869 # include "inline.h" 7870 # include "sv_inline.h" 7871 7872 END_EXTERN_C 7873 7874 #endif 7875 7876 /* 7877 7878 =for apidoc_section $numeric 7879 7880 =for apidoc AmTR|NV|Strtod|NN const char * const s|NULLOK char ** e 7881 7882 This is a synonym for L</my_strtod>. 7883 7884 =for apidoc AmTR|NV|Strtol|NN const char * const s|NULLOK char ** e|int base 7885 7886 Platform and configuration independent C<strtol>. This expands to the 7887 appropriate C<strotol>-like function based on the platform and F<Configure> 7888 options>. For example it could expand to C<strtoll> or C<strtoq> instead of 7889 C<strtol>. 7890 7891 =for apidoc AmTR|NV|Strtoul|NN const char * const s|NULLOK char ** e|int base 7892 7893 Platform and configuration independent C<strtoul>. This expands to the 7894 appropriate C<strotoul>-like function based on the platform and F<Configure> 7895 options>. For example it could expand to C<strtoull> or C<strtouq> instead of 7896 C<strtoul>. 7897 7898 =cut 7899 7900 */ 7901 7902 #define Strtod my_strtod 7903 7904 #if defined(HAS_STRTOD) \ 7905 || defined(USE_QUADMATH) \ 7906 || (defined(HAS_STRTOLD) && defined(HAS_LONG_DOUBLE) \ 7907 && defined(USE_LONG_DOUBLE)) 7908 # define Perl_strtod Strtod 7909 #endif 7910 7911 #if !defined(Strtol) && defined(USE_64_BIT_INT) && defined(IV_IS_QUAD) && \ 7912 (QUADKIND == QUAD_IS_LONG_LONG || QUADKIND == QUAD_IS___INT64) 7913 # ifdef __hpux 7914 # define strtoll __strtoll /* secret handshake */ 7915 # endif 7916 # if defined(WIN64) && defined(_MSC_VER) 7917 # define strtoll _strtoi64 /* secret handshake */ 7918 # endif 7919 # if !defined(Strtol) && defined(HAS_STRTOLL) 7920 # define Strtol strtoll 7921 # endif 7922 # if !defined(Strtol) && defined(HAS_STRTOQ) 7923 # define Strtol strtoq 7924 # endif 7925 /* is there atoq() anywhere? */ 7926 #endif 7927 #if !defined(Strtol) && defined(HAS_STRTOL) 7928 # define Strtol strtol 7929 #endif 7930 #ifndef Atol 7931 /* It would be more fashionable to use Strtol() to define atol() 7932 * (as is done for Atoul(), see below) but for backward compatibility 7933 * we just assume atol(). */ 7934 # if defined(USE_64_BIT_INT) && defined(IV_IS_QUAD) && defined(HAS_ATOLL) && \ 7935 (QUADKIND == QUAD_IS_LONG_LONG || QUADKIND == QUAD_IS___INT64) 7936 # ifdef WIN64 7937 # define atoll _atoi64 /* secret handshake */ 7938 # endif 7939 # define Atol atoll 7940 # else 7941 # define Atol atol 7942 # endif 7943 #endif 7944 7945 #if !defined(Strtoul) && defined(USE_64_BIT_INT) && defined(UV_IS_QUAD) && \ 7946 (QUADKIND == QUAD_IS_LONG_LONG || QUADKIND == QUAD_IS___INT64) 7947 # ifdef __hpux 7948 # define strtoull __strtoull /* secret handshake */ 7949 # endif 7950 # if defined(WIN64) && defined(_MSC_VER) 7951 # define strtoull _strtoui64 /* secret handshake */ 7952 # endif 7953 # if !defined(Strtoul) && defined(HAS_STRTOULL) 7954 # define Strtoul strtoull 7955 # endif 7956 # if !defined(Strtoul) && defined(HAS_STRTOUQ) 7957 # define Strtoul strtouq 7958 # endif 7959 /* is there atouq() anywhere? */ 7960 #endif 7961 #if !defined(Strtoul) && defined(HAS_STRTOUL) 7962 # define Strtoul strtoul 7963 #endif 7964 #if !defined(Strtoul) && defined(HAS_STRTOL) /* Last resort. */ 7965 # define Strtoul(s, e, b) strchr((s), '-') ? ULONG_MAX : (unsigned long)strtol((s), (e), (b)) 7966 #endif 7967 #ifndef Atoul 7968 # define Atoul(s) Strtoul(s, NULL, 10) 7969 #endif 7970 7971 #define grok_bin(s,lp,fp,rp) \ 7972 grok_bin_oct_hex(s, lp, fp, rp, 1, CC_BINDIGIT_, 'b') 7973 #define grok_oct(s,lp,fp,rp) \ 7974 (*(fp) |= PERL_SCAN_DISALLOW_PREFIX, \ 7975 grok_bin_oct_hex(s, lp, fp, rp, 3, CC_OCTDIGIT_, '\0')) 7976 #define grok_hex(s,lp,fp,rp) \ 7977 grok_bin_oct_hex(s, lp, fp, rp, 4, CC_XDIGIT_, 'x') 7978 7979 #ifndef PERL_SCRIPT_MODE 7980 #define PERL_SCRIPT_MODE "r" 7981 #endif 7982 7983 /* not used. Kept as a NOOP for backcompat */ 7984 #define PERL_STACK_OVERFLOW_CHECK() NOOP 7985 7986 /* 7987 * Some nonpreemptive operating systems find it convenient to 7988 * check for asynchronous conditions after each op execution. 7989 * Keep this check simple, or it may slow down execution 7990 * massively. 7991 */ 7992 7993 #ifndef PERL_ASYNC_CHECK 7994 #define PERL_ASYNC_CHECK() if (UNLIKELY(PL_sig_pending)) PL_signalhook(aTHX) 7995 #endif 7996 7997 /* 7998 * On some operating systems, a memory allocation may succeed, 7999 * but put the process too close to the system's comfort limit. 8000 * In this case, PERL_ALLOC_CHECK frees the pointer and sets 8001 * it to NULL. 8002 */ 8003 #ifndef PERL_ALLOC_CHECK 8004 #define PERL_ALLOC_CHECK(p) NOOP 8005 #endif 8006 8007 #ifdef HAS_SEM 8008 # include <sys/ipc.h> 8009 # include <sys/sem.h> 8010 # ifndef HAS_UNION_SEMUN /* Provide the union semun. */ 8011 union semun { 8012 int val; 8013 struct semid_ds *buf; 8014 unsigned short *array; 8015 }; 8016 # endif 8017 # ifdef USE_SEMCTL_SEMUN 8018 # ifdef IRIX32_SEMUN_BROKEN_BY_GCC 8019 union gccbug_semun { 8020 int val; 8021 struct semid_ds *buf; 8022 unsigned short *array; 8023 char __dummy[5]; 8024 }; 8025 # define semun gccbug_semun 8026 # endif 8027 # define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun) 8028 # elif defined(USE_SEMCTL_SEMID_DS) 8029 # ifdef EXTRA_F_IN_SEMUN_BUF 8030 # define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun.buff) 8031 # else 8032 # define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun.buf) 8033 # endif 8034 # endif 8035 #endif 8036 8037 /* 8038 * Boilerplate macros for initializing and accessing interpreter-local 8039 * data from C. All statics in extensions should be reworked to use 8040 * this, if you want to make the extension thread-safe. See 8041 * ext/XS/APItest/APItest.xs for an example of the use of these macros, 8042 * and perlxs.pod for more. 8043 * 8044 * Code that uses these macros is responsible for the following: 8045 * 1. #define MY_CXT_KEY to a unique string, e.g. 8046 * "DynaLoader::_guts" XS_VERSION 8047 * XXX in the current implementation, this string is ignored. 8048 * 2. Declare a typedef named my_cxt_t that is a structure that contains 8049 * all the data that needs to be interpreter-local that perl controls. This 8050 * doesn't include things that libc controls, such as the uselocale object 8051 * in Configurations that use it. 8052 * 3. Use the START_MY_CXT macro after the declaration of my_cxt_t. 8053 * 4. Use the MY_CXT_INIT macro such that it is called exactly once 8054 * (typically put in the BOOT: section). 8055 * 5. Use the members of the my_cxt_t structure everywhere as 8056 * MY_CXT.member. 8057 * 6. Use the dMY_CXT macro (a declaration) in all the functions that 8058 * access MY_CXT. 8059 */ 8060 8061 #if defined(MULTIPLICITY) 8062 8063 /* START_MY_CXT must appear in all extensions that define a my_cxt_t structure, 8064 * right after the definition (i.e. at file scope). The non-threads 8065 * case below uses it to declare the data as static. */ 8066 # define START_MY_CXT static int my_cxt_index = -1; 8067 # define MY_CXT_INDEX my_cxt_index 8068 # define MY_CXT_INIT_ARG &my_cxt_index 8069 8070 /* Creates and zeroes the per-interpreter data. 8071 * (We allocate my_cxtp in a Perl SV so that it will be released when 8072 * the interpreter goes away.) */ 8073 # define MY_CXT_INIT \ 8074 my_cxt_t *my_cxtp = \ 8075 (my_cxt_t*)Perl_my_cxt_init(aTHX_ MY_CXT_INIT_ARG, sizeof(my_cxt_t)); \ 8076 PERL_UNUSED_VAR(my_cxtp) 8077 # define MY_CXT_INIT_INTERP(my_perl) \ 8078 my_cxt_t *my_cxtp = \ 8079 (my_cxt_t*)Perl_my_cxt_init(my_perl, MY_CXT_INIT_ARG, sizeof(my_cxt_t)); \ 8080 PERL_UNUSED_VAR(my_cxtp) 8081 8082 /* This declaration should be used within all functions that use the 8083 * interpreter-local data. */ 8084 # define dMY_CXT \ 8085 my_cxt_t *my_cxtp = (my_cxt_t *)PL_my_cxt_list[MY_CXT_INDEX] 8086 # define dMY_CXT_INTERP(my_perl) \ 8087 my_cxt_t *my_cxtp = (my_cxt_t *)(my_perl)->Imy_cxt_list[MY_CXT_INDEX] 8088 8089 /* Clones the per-interpreter data. */ 8090 # define MY_CXT_CLONE \ 8091 my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1));\ 8092 void * old_my_cxtp = PL_my_cxt_list[MY_CXT_INDEX]; \ 8093 PL_my_cxt_list[MY_CXT_INDEX] = my_cxtp; \ 8094 Copy(old_my_cxtp, my_cxtp, 1, my_cxt_t); 8095 8096 8097 8098 /* This macro must be used to access members of the my_cxt_t structure. 8099 * e.g. MY_CXT.some_data */ 8100 # define MY_CXT (*my_cxtp) 8101 8102 /* Judicious use of these macros can reduce the number of times dMY_CXT 8103 * is used. Use is similar to pTHX, aTHX etc. */ 8104 # define pMY_CXT my_cxt_t *my_cxtp 8105 # define pMY_CXT_ pMY_CXT, 8106 # define _pMY_CXT ,pMY_CXT 8107 # define aMY_CXT my_cxtp 8108 # define aMY_CXT_ aMY_CXT, 8109 # define _aMY_CXT ,aMY_CXT 8110 8111 #else /* MULTIPLICITY */ 8112 # define START_MY_CXT static my_cxt_t my_cxt; 8113 # define dMY_CXT dNOOP 8114 # define dMY_CXT_INTERP(my_perl) dNOOP 8115 # define MY_CXT_INIT NOOP 8116 # define MY_CXT_CLONE NOOP 8117 # define MY_CXT my_cxt 8118 8119 # define pMY_CXT void 8120 # define pMY_CXT_ 8121 # define _pMY_CXT 8122 # define aMY_CXT 8123 # define aMY_CXT_ 8124 # define _aMY_CXT 8125 8126 #endif /* !defined(MULTIPLICITY) */ 8127 8128 #ifdef I_FCNTL 8129 # include <fcntl.h> 8130 #endif 8131 8132 #ifdef __Lynx__ 8133 # include <fcntl.h> 8134 #endif 8135 8136 #ifdef __amigaos4__ 8137 # undef FD_CLOEXEC /* a lie in AmigaOS */ 8138 #endif 8139 8140 #ifdef I_SYS_FILE 8141 # include <sys/file.h> 8142 #endif 8143 8144 #if defined(HAS_FLOCK) && !defined(HAS_FLOCK_PROTO) 8145 EXTERN_C int flock(int fd, int op); 8146 #endif 8147 8148 #ifndef O_RDONLY 8149 /* Assume UNIX defaults */ 8150 # define O_RDONLY 0000 8151 # define O_WRONLY 0001 8152 # define O_RDWR 0002 8153 # define O_CREAT 0100 8154 #endif 8155 8156 #ifndef O_BINARY 8157 # define O_BINARY 0 8158 #endif 8159 8160 #ifndef O_TEXT 8161 # define O_TEXT 0 8162 #endif 8163 8164 #if O_TEXT != O_BINARY 8165 /* If you have different O_TEXT and O_BINARY and you are a CRLF shop, 8166 * that is, you are somehow DOSish. */ 8167 # if defined(__HAIKU__) || defined(__VOS__) || defined(__CYGWIN__) 8168 /* Haiku has O_TEXT != O_BINARY but O_TEXT and O_BINARY have no effect; 8169 * Haiku is always UNIXoid (LF), not DOSish (CRLF). */ 8170 /* VOS has O_TEXT != O_BINARY, and they have effect, 8171 * but VOS always uses LF, never CRLF. */ 8172 /* If you have O_TEXT different from your O_BINARY but you still are 8173 * not a CRLF shop. */ 8174 # undef PERLIO_USING_CRLF 8175 # else 8176 /* If you really are DOSish. */ 8177 # define PERLIO_USING_CRLF 1 8178 # endif 8179 #endif 8180 8181 #ifdef I_LIBUTIL 8182 # include <libutil.h> /* setproctitle() in some FreeBSDs */ 8183 #endif 8184 8185 #ifndef EXEC_ARGV_CAST 8186 #define EXEC_ARGV_CAST(x) (char **)x 8187 #endif 8188 8189 #define IS_NUMBER_IN_UV 0x01 /* number within UV range (maybe not 8190 int). value returned in pointed- 8191 to UV */ 8192 #define IS_NUMBER_GREATER_THAN_UV_MAX 0x02 /* pointed to UV undefined */ 8193 #define IS_NUMBER_NOT_INT 0x04 /* saw . or E notation or infnan */ 8194 #define IS_NUMBER_NEG 0x08 /* leading minus sign */ 8195 #define IS_NUMBER_INFINITY 0x10 /* this is big */ 8196 #define IS_NUMBER_NAN 0x20 /* this is not */ 8197 #define IS_NUMBER_TRAILING 0x40 /* number has trailing trash */ 8198 8199 /* 8200 =for apidoc_section $numeric 8201 8202 =for apidoc AmdR|bool|GROK_NUMERIC_RADIX|NN const char **sp|NN const char *send 8203 8204 A synonym for L</grok_numeric_radix> 8205 8206 =cut 8207 */ 8208 #define GROK_NUMERIC_RADIX(sp, send) grok_numeric_radix(sp, send) 8209 8210 /* Number scan flags. All are used for input, the ones used for output are so 8211 * marked */ 8212 #define PERL_SCAN_ALLOW_UNDERSCORES 0x01 /* grok_??? accept _ in numbers */ 8213 #define PERL_SCAN_DISALLOW_PREFIX 0x02 /* grok_??? reject 0x in hex etc */ 8214 8215 /* grok_??? input: ignored; output: found overflow */ 8216 #define PERL_SCAN_GREATER_THAN_UV_MAX 0x04 8217 8218 /* grok_??? don't warn about illegal digits. To preserve total backcompat, 8219 * this isn't set on output if one is found. Instead, see 8220 * PERL_SCAN_NOTIFY_ILLDIGIT. */ 8221 #define PERL_SCAN_SILENT_ILLDIGIT 0x08 8222 8223 #define PERL_SCAN_TRAILING 0x10 /* grok_number_flags() allow trailing 8224 and set IS_NUMBER_TRAILING */ 8225 8226 /* These are considered experimental, so not exposed publicly */ 8227 #if defined(PERL_CORE) || defined(PERL_EXT) 8228 /* grok_??? don't warn about very large numbers which are <= UV_MAX; 8229 * output: found such a number */ 8230 # define PERL_SCAN_SILENT_NON_PORTABLE 0x20 8231 8232 /* If this is set on input, and no illegal digit is found, it will be cleared 8233 * on output; otherwise unchanged */ 8234 # define PERL_SCAN_NOTIFY_ILLDIGIT 0x40 8235 8236 /* Don't warn on overflow; output flag still set */ 8237 # define PERL_SCAN_SILENT_OVERFLOW 0x80 8238 8239 /* Forbid a leading underscore, which the other one doesn't */ 8240 # define PERL_SCAN_ALLOW_MEDIAL_UNDERSCORES (0x100|PERL_SCAN_ALLOW_UNDERSCORES) 8241 #endif 8242 8243 8244 /* to let user control profiling */ 8245 #ifdef PERL_GPROF_CONTROL 8246 extern void moncontrol(int); 8247 #define PERL_GPROF_MONCONTROL(x) moncontrol(x) 8248 #else 8249 #define PERL_GPROF_MONCONTROL(x) 8250 #endif 8251 8252 /* ISO 6429 NEL - C1 control NExt Line */ 8253 /* See https://www.unicode.org/unicode/reports/tr13/ */ 8254 #define NEXT_LINE_CHAR NEXT_LINE_NATIVE 8255 8256 #ifndef PIPESOCK_MODE 8257 # define PIPESOCK_MODE 8258 #endif 8259 8260 #ifndef SOCKET_OPEN_MODE 8261 # define SOCKET_OPEN_MODE PIPESOCK_MODE 8262 #endif 8263 8264 #ifndef PIPE_OPEN_MODE 8265 # define PIPE_OPEN_MODE PIPESOCK_MODE 8266 #endif 8267 8268 #define PERL_MAGIC_UTF8_CACHESIZE 2 8269 8270 #ifdef PERL_CORE 8271 8272 #define PERL_UNICODE_STDIN_FLAG 0x0001 8273 #define PERL_UNICODE_STDOUT_FLAG 0x0002 8274 #define PERL_UNICODE_STDERR_FLAG 0x0004 8275 #define PERL_UNICODE_IN_FLAG 0x0008 8276 #define PERL_UNICODE_OUT_FLAG 0x0010 8277 #define PERL_UNICODE_ARGV_FLAG 0x0020 8278 #define PERL_UNICODE_LOCALE_FLAG 0x0040 8279 #define PERL_UNICODE_WIDESYSCALLS_FLAG 0x0080 /* for Sarathy */ 8280 #define PERL_UNICODE_UTF8CACHEASSERT_FLAG 0x0100 8281 8282 #define PERL_UNICODE_STD_FLAG \ 8283 (PERL_UNICODE_STDIN_FLAG | \ 8284 PERL_UNICODE_STDOUT_FLAG | \ 8285 PERL_UNICODE_STDERR_FLAG) 8286 8287 #define PERL_UNICODE_INOUT_FLAG \ 8288 (PERL_UNICODE_IN_FLAG | \ 8289 PERL_UNICODE_OUT_FLAG) 8290 8291 #define PERL_UNICODE_DEFAULT_FLAGS \ 8292 (PERL_UNICODE_STD_FLAG | \ 8293 PERL_UNICODE_INOUT_FLAG | \ 8294 PERL_UNICODE_LOCALE_FLAG) 8295 8296 #define PERL_UNICODE_ALL_FLAGS 0x01ff 8297 8298 #define PERL_UNICODE_STDIN 'I' 8299 #define PERL_UNICODE_STDOUT 'O' 8300 #define PERL_UNICODE_STDERR 'E' 8301 #define PERL_UNICODE_STD 'S' 8302 #define PERL_UNICODE_IN 'i' 8303 #define PERL_UNICODE_OUT 'o' 8304 #define PERL_UNICODE_INOUT 'D' 8305 #define PERL_UNICODE_ARGV 'A' 8306 #define PERL_UNICODE_LOCALE 'L' 8307 #define PERL_UNICODE_WIDESYSCALLS 'W' 8308 #define PERL_UNICODE_UTF8CACHEASSERT 'a' 8309 8310 #endif 8311 8312 /* 8313 =for apidoc_section $signals 8314 =for apidoc Amn|U32|PERL_SIGNALS_UNSAFE_FLAG 8315 If this bit in C<PL_signals> is set, the system is uing the pre-Perl 5.8 8316 unsafe signals. See L<perlrun/PERL_SIGNALS> and L<perlipc/Deferred Signals 8317 (Safe Signals)>. 8318 8319 =cut 8320 */ 8321 #define PERL_SIGNALS_UNSAFE_FLAG 0x0001 8322 8323 /* 8324 =for apidoc_section $numeric 8325 8326 =for apidoc Am|int|PERL_ABS|int x 8327 8328 Typeless C<abs> or C<fabs>, I<etc>. (The usage below indicates it is for 8329 integers, but it works for any type.) Use instead of these, since the C 8330 library ones force their argument to be what it is expecting, potentially 8331 leading to disaster. But also beware that this evaluates its argument twice, 8332 so no C<x++>. 8333 8334 =cut 8335 */ 8336 8337 #define PERL_ABS(x) ((x) < 0 ? -(x) : (x)) 8338 8339 #if defined(__DECC) && defined(__osf__) 8340 #pragma message disable (mainparm) /* Perl uses the envp in main(). */ 8341 #endif 8342 8343 #define do_open(g, n, l, a, rm, rp, sf) \ 8344 do_openn(g, n, l, a, rm, rp, sf, (SV **) NULL, 0) 8345 #ifdef PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION 8346 # define do_exec(cmd) do_exec3(cmd,0,0) 8347 #endif 8348 #ifdef OS2 8349 # define do_aexec Perl_do_aexec 8350 #else 8351 # define do_aexec(really, mark,sp) do_aexec5(really, mark, sp, 0, 0) 8352 #endif 8353 8354 8355 /* 8356 =for apidoc_section $utility 8357 8358 =for apidoc Am|bool|IS_SAFE_SYSCALL|NN const char *pv|STRLEN len|NN const char *what|NN const char *op_name 8359 8360 Same as L</is_safe_syscall>. 8361 8362 =cut 8363 8364 Allows one ending \0 8365 */ 8366 #define IS_SAFE_SYSCALL(p, len, what, op_name) (Perl_is_safe_syscall(aTHX_ (p), (len), (what), (op_name))) 8367 8368 #define IS_SAFE_PATHNAME(p, len, op_name) IS_SAFE_SYSCALL((p), (len), "pathname", (op_name)) 8369 8370 #if defined(OEMVS) || defined(__amigaos4__) 8371 #define NO_ENV_ARRAY_IN_MAIN 8372 #endif 8373 8374 /* These are used by Perl_pv_escape() and Perl_pv_pretty() 8375 * are here so that they are available throughout the core 8376 * NOTE that even though some are for _escape and some for _pretty 8377 * there must not be any clashes as the flags from _pretty are 8378 * passed straight through to _escape. 8379 */ 8380 8381 #define PERL_PV_ESCAPE_QUOTE 0x000001 8382 #define PERL_PV_PRETTY_QUOTE PERL_PV_ESCAPE_QUOTE 8383 8384 #define PERL_PV_PRETTY_ELLIPSES 0x000002 8385 #define PERL_PV_PRETTY_LTGT 0x000004 8386 #define PERL_PV_PRETTY_EXACTSIZE 0x000008 8387 8388 #define PERL_PV_ESCAPE_UNI 0x000100 8389 #define PERL_PV_ESCAPE_UNI_DETECT 0x000200 8390 #define PERL_PV_ESCAPE_NONASCII 0x000400 8391 #define PERL_PV_ESCAPE_FIRSTCHAR 0x000800 8392 8393 #define PERL_PV_ESCAPE_ALL 0x001000 8394 #define PERL_PV_ESCAPE_NOBACKSLASH 0x002000 8395 #define PERL_PV_ESCAPE_NOCLEAR 0x004000 8396 #define PERL_PV_PRETTY_NOCLEAR PERL_PV_ESCAPE_NOCLEAR 8397 #define PERL_PV_ESCAPE_RE 0x008000 8398 8399 /* Escape PV with hex, except leave NULs as octal: */ 8400 #define PERL_PV_ESCAPE_DWIM 0x010000 8401 8402 /* Escape PV with all hex, including NUL. */ 8403 #define PERL_PV_ESCAPE_DWIM_ALL_HEX 0x020000 8404 8405 /* Do not escape word characters, alters meaning of other flags */ 8406 #define PERL_PV_ESCAPE_NON_WC 0x040000 8407 #define PERL_PV_ESCAPE_TRUNC_MIDDLE 0x080000 8408 8409 #define PERL_PV_PRETTY_QUOTEDPREFIX ( \ 8410 PERL_PV_PRETTY_ELLIPSES | \ 8411 PERL_PV_PRETTY_QUOTE | \ 8412 PERL_PV_ESCAPE_NONASCII | \ 8413 PERL_PV_ESCAPE_NON_WC | \ 8414 PERL_PV_ESCAPE_TRUNC_MIDDLE | \ 8415 0) 8416 8417 8418 /* used by pv_display in dump.c*/ 8419 #define PERL_PV_PRETTY_DUMP PERL_PV_PRETTY_ELLIPSES|PERL_PV_PRETTY_QUOTE 8420 #define PERL_PV_PRETTY_REGPROP PERL_PV_PRETTY_ELLIPSES|PERL_PV_PRETTY_LTGT|PERL_PV_ESCAPE_RE|PERL_PV_ESCAPE_NONASCII 8421 8422 #if DOUBLEKIND == DOUBLE_IS_VAX_F_FLOAT || \ 8423 DOUBLEKIND == DOUBLE_IS_VAX_D_FLOAT || \ 8424 DOUBLEKIND == DOUBLE_IS_VAX_G_FLOAT 8425 # define DOUBLE_IS_VAX_FLOAT 8426 #else 8427 # define DOUBLE_IS_IEEE_FORMAT 8428 #endif 8429 8430 #if DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_LITTLE_ENDIAN || \ 8431 DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_LITTLE_ENDIAN || \ 8432 DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN 8433 # define DOUBLE_LITTLE_ENDIAN 8434 #endif 8435 8436 #if DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_BIG_ENDIAN || \ 8437 DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_BIG_ENDIAN || \ 8438 DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN 8439 # define DOUBLE_BIG_ENDIAN 8440 #endif 8441 8442 #if DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_LE_BE || \ 8443 DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_BE_LE 8444 # define DOUBLE_MIX_ENDIAN 8445 #endif 8446 8447 /* The VAX fp formats are neither consistently little-endian nor 8448 * big-endian, and neither are they really IEEE-mixed endian like 8449 * the mixed-endian ARM IEEE formats (with swapped bytes). 8450 * Ultimately, the VAX format came from the PDP-11. 8451 * 8452 * The ordering of the parts in VAX floats is quite vexing. 8453 * In the below the fraction_n are the mantissa bits. 8454 * 8455 * The fraction_1 is the most significant (numbering as by DEC/Digital), 8456 * while the rightmost bit in each fraction is the least significant: 8457 * in other words, big-endian bit order within the fractions. 8458 * 8459 * The fraction segments themselves would be big-endianly, except that 8460 * within 32 bit segments the less significant half comes first, the more 8461 * significant after, except that in the format H (used for long doubles) 8462 * the first fraction segment is alone, because the exponent is wider. 8463 * This means for example that both the most and the least significant 8464 * bits can be in the middle of the floats, not at either end. 8465 * 8466 * References: 8467 * http://nssdc.gsfc.nasa.gov/nssdc/formats/VAXFloatingPoint.htm 8468 * http://www.quadibloc.com/comp/cp0201.htm 8469 * http://h71000.www7.hp.com/doc/82final/6443/6443pro_028.html 8470 * (somebody at HP should be fired for the URLs) 8471 * 8472 * F fraction_2:16 sign:1 exp:8 fraction_1:7 8473 * (exponent bias 128, hidden first one-bit) 8474 * 8475 * D fraction_2:16 sign:1 exp:8 fraction_1:7 8476 * fraction_4:16 fraction_3:16 8477 * (exponent bias 128, hidden first one-bit) 8478 * 8479 * G fraction_2:16 sign:1 exp:11 fraction_1:4 8480 * fraction_4:16 fraction_3:16 8481 * (exponent bias 1024, hidden first one-bit) 8482 * 8483 * H fraction_1:16 sign:1 exp:15 8484 * fraction_3:16 fraction_2:16 8485 * fraction_5:16 fraction_4:16 8486 * fraction_7:16 fraction_6:16 8487 * (exponent bias 16384, hidden first one-bit) 8488 * (available only on VAX, and only on Fortran?) 8489 * 8490 * The formats S, T and X are available on the Alpha (and Itanium, 8491 * also known as I64/IA64) and are equivalent with the IEEE-754 formats 8492 * binary32, binary64, and binary128 (commonly: float, double, long double). 8493 * 8494 * S sign:1 exp:8 mantissa:23 8495 * (exponent bias 127, hidden first one-bit) 8496 * 8497 * T sign:1 exp:11 mantissa:52 8498 * (exponent bias 1022, hidden first one-bit) 8499 * 8500 * X sign:1 exp:15 mantissa:112 8501 * (exponent bias 16382, hidden first one-bit) 8502 * 8503 */ 8504 8505 #ifdef DOUBLE_IS_VAX_FLOAT 8506 # define DOUBLE_VAX_ENDIAN 8507 #endif 8508 8509 #ifdef DOUBLE_IS_IEEE_FORMAT 8510 /* All the basic IEEE formats have the implicit bit, 8511 * except for the x86 80-bit extended formats, which will undef this. 8512 * Also note that the IEEE 754 subnormals (formerly known as denormals) 8513 * do not have the implicit bit of one. */ 8514 # define NV_IMPLICIT_BIT 8515 #endif 8516 8517 #if defined(LONG_DOUBLEKIND) && LONG_DOUBLEKIND != LONG_DOUBLE_IS_DOUBLE 8518 8519 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN || \ 8520 LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN || \ 8521 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE 8522 # define LONGDOUBLE_LITTLE_ENDIAN 8523 # endif 8524 8525 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN || \ 8526 LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN || \ 8527 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE 8528 # define LONGDOUBLE_BIG_ENDIAN 8529 # endif 8530 8531 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE || \ 8532 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE 8533 # define LONGDOUBLE_MIX_ENDIAN 8534 # endif 8535 8536 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN || \ 8537 LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN 8538 # define LONGDOUBLE_X86_80_BIT 8539 # ifdef USE_LONG_DOUBLE 8540 # undef NV_IMPLICIT_BIT 8541 # define NV_X86_80_BIT 8542 # endif 8543 # endif 8544 8545 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE || \ 8546 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE || \ 8547 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE || \ 8548 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE 8549 # define LONGDOUBLE_DOUBLEDOUBLE 8550 # endif 8551 8552 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_VAX_H_FLOAT 8553 # define LONGDOUBLE_VAX_ENDIAN 8554 # endif 8555 8556 #endif /* LONG_DOUBLEKIND */ 8557 8558 #ifdef USE_QUADMATH /* assume quadmath endianness == native double endianness */ 8559 # if defined(DOUBLE_LITTLE_ENDIAN) 8560 # define NV_LITTLE_ENDIAN 8561 # elif defined(DOUBLE_BIG_ENDIAN) 8562 # define NV_BIG_ENDIAN 8563 # elif defined(DOUBLE_MIX_ENDIAN) /* stretch */ 8564 # define NV_MIX_ENDIAN 8565 # endif 8566 #elif NVSIZE == DOUBLESIZE 8567 # ifdef DOUBLE_LITTLE_ENDIAN 8568 # define NV_LITTLE_ENDIAN 8569 # endif 8570 # ifdef DOUBLE_BIG_ENDIAN 8571 # define NV_BIG_ENDIAN 8572 # endif 8573 # ifdef DOUBLE_MIX_ENDIAN 8574 # define NV_MIX_ENDIAN 8575 # endif 8576 # ifdef DOUBLE_VAX_ENDIAN 8577 # define NV_VAX_ENDIAN 8578 # endif 8579 #elif NVSIZE == LONG_DOUBLESIZE 8580 # ifdef LONGDOUBLE_LITTLE_ENDIAN 8581 # define NV_LITTLE_ENDIAN 8582 # endif 8583 # ifdef LONGDOUBLE_BIG_ENDIAN 8584 # define NV_BIG_ENDIAN 8585 # endif 8586 # ifdef LONGDOUBLE_MIX_ENDIAN 8587 # define NV_MIX_ENDIAN 8588 # endif 8589 # ifdef LONGDOUBLE_VAX_ENDIAN 8590 # define NV_VAX_ENDIAN 8591 # endif 8592 #endif 8593 8594 /* We have somehow managed not to define the denormal/subnormal 8595 * detection. 8596 * 8597 * This may happen if the compiler doesn't expose the C99 math like 8598 * the fpclassify() without some special switches. Perl tries to 8599 * stay C89, so for example -std=c99 is not an option. 8600 * 8601 * The Perl_isinf() and Perl_isnan() should have been defined even if 8602 * the C99 isinf() and isnan() are unavailable, and the NV_MIN becomes 8603 * from the C89 DBL_MIN or moral equivalent. */ 8604 #if !defined(Perl_fp_class_denorm) && defined(Perl_isinf) && defined(Perl_isnan) && defined(NV_MIN) 8605 # define Perl_fp_class_denorm(x) ((x) != 0.0 && !Perl_isinf(x) && !Perl_isnan(x) && PERL_ABS(x) < NV_MIN) 8606 #endif 8607 8608 /* This is not a great fallback: subnormals tests will fail, 8609 * but at least Perl will link and 99.999% of tests will work. */ 8610 #if !defined(Perl_fp_class_denorm) 8611 # define Perl_fp_class_denorm(x) FALSE 8612 #endif 8613 8614 #ifdef DOUBLE_IS_IEEE_FORMAT 8615 # define DOUBLE_HAS_INF 8616 # define DOUBLE_HAS_NAN 8617 #endif 8618 8619 #ifdef DOUBLE_HAS_NAN 8620 8621 START_EXTERN_C 8622 8623 #ifdef DOINIT 8624 8625 /* PL_inf and PL_nan initialization. 8626 * 8627 * For inf and nan initialization the ultimate fallback is dividing 8628 * one or zero by zero: however, some compilers will warn or even fail 8629 * on divide-by-zero, but hopefully something earlier will work. 8630 * 8631 * If you are thinking of using HUGE_VAL for infinity, or using 8632 * <math.h> functions to generate NV_INF (e.g. exp(1e9), log(-1.0)), 8633 * stop. Neither will work portably: HUGE_VAL can be just DBL_MAX, 8634 * and the math functions might be just generating DBL_MAX, or even zero. 8635 * 8636 * Also, do NOT try doing NV_NAN based on NV_INF and trying (NV_INF-NV_INF). 8637 * Though logically correct, some compilers (like Visual C 2003) 8638 * falsely misoptimize that to zero (x-x is always zero, right?) 8639 * 8640 * Finally, note that not all floating point formats define Inf (or NaN). 8641 * For the infinity a large number may be used instead. Operations that 8642 * under the IEEE floating point would return Inf or NaN may return 8643 * either large numbers (positive or negative), or they may cause 8644 * a floating point exception or some other fault. 8645 */ 8646 8647 /* The quadmath literals are anon structs which -Wc++-compat doesn't like. */ 8648 # ifndef USE_CPLUSPLUS 8649 GCC_DIAG_IGNORE_DECL(-Wc++-compat); 8650 # endif 8651 8652 # ifdef USE_QUADMATH 8653 /* Cannot use HUGE_VALQ for PL_inf because not a compile-time 8654 * constant. */ 8655 INFNAN_NV_U8_DECL PL_inf = { 1.0Q/0.0Q }; 8656 # elif NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLINFBYTES) 8657 INFNAN_U8_NV_DECL PL_inf = { { LONGDBLINFBYTES } }; 8658 # elif NVSIZE == DOUBLESIZE && defined(DOUBLEINFBYTES) 8659 INFNAN_U8_NV_DECL PL_inf = { { DOUBLEINFBYTES } }; 8660 # else 8661 # if NVSIZE == LONG_DOUBLESIZE && defined(USE_LONG_DOUBLE) 8662 # if defined(LDBL_INFINITY) 8663 INFNAN_NV_U8_DECL PL_inf = { LDBL_INFINITY }; 8664 # elif defined(LDBL_INF) 8665 INFNAN_NV_U8_DECL PL_inf = { LDBL_INF }; 8666 # elif defined(INFINITY) 8667 INFNAN_NV_U8_DECL PL_inf = { (NV)INFINITY }; 8668 # elif defined(INF) 8669 INFNAN_NV_U8_DECL PL_inf = { (NV)INF }; 8670 # else 8671 INFNAN_NV_U8_DECL PL_inf = { 1.0L/0.0L }; /* keep last */ 8672 # endif 8673 # else 8674 # if defined(DBL_INFINITY) 8675 INFNAN_NV_U8_DECL PL_inf = { DBL_INFINITY }; 8676 # elif defined(DBL_INF) 8677 INFNAN_NV_U8_DECL PL_inf = { DBL_INF }; 8678 # elif defined(INFINITY) /* C99 */ 8679 INFNAN_NV_U8_DECL PL_inf = { (NV)INFINITY }; 8680 # elif defined(INF) 8681 INFNAN_NV_U8_DECL PL_inf = { (NV)INF }; 8682 # else 8683 INFNAN_NV_U8_DECL PL_inf = { 1.0/0.0 }; /* keep last */ 8684 # endif 8685 # endif 8686 # endif 8687 8688 # ifdef USE_QUADMATH 8689 /* Cannot use nanq("0") for PL_nan because not a compile-time 8690 * constant. */ 8691 INFNAN_NV_U8_DECL PL_nan = { 0.0Q/0.0Q }; 8692 # elif NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLNANBYTES) 8693 INFNAN_U8_NV_DECL PL_nan = { { LONGDBLNANBYTES } }; 8694 # elif NVSIZE == DOUBLESIZE && defined(DOUBLENANBYTES) 8695 INFNAN_U8_NV_DECL PL_nan = { { DOUBLENANBYTES } }; 8696 # else 8697 # if NVSIZE == LONG_DOUBLESIZE && defined(USE_LONG_DOUBLE) 8698 # if defined(LDBL_NAN) 8699 INFNAN_NV_U8_DECL PL_nan = { LDBL_NAN }; 8700 # elif defined(LDBL_QNAN) 8701 INFNAN_NV_U8_DECL PL_nan = { LDBL_QNAN }; 8702 # elif defined(NAN) 8703 INFNAN_NV_U8_DECL PL_nan = { (NV)NAN }; 8704 # else 8705 INFNAN_NV_U8_DECL PL_nan = { 0.0L/0.0L }; /* keep last */ 8706 # endif 8707 # else 8708 # if defined(DBL_NAN) 8709 INFNAN_NV_U8_DECL PL_nan = { DBL_NAN }; 8710 # elif defined(DBL_QNAN) 8711 INFNAN_NV_U8_DECL PL_nan = { DBL_QNAN }; 8712 # elif defined(NAN) /* C99 */ 8713 INFNAN_NV_U8_DECL PL_nan = { (NV)NAN }; 8714 # else 8715 INFNAN_NV_U8_DECL PL_nan = { 0.0/0.0 }; /* keep last */ 8716 # endif 8717 # endif 8718 # endif 8719 8720 # ifndef USE_CPLUSPLUS 8721 GCC_DIAG_RESTORE_DECL; 8722 # endif 8723 8724 #else 8725 8726 /* The declarations here need to match the initializations done above, 8727 since a mismatch across compilation units causes undefined 8728 behavior. It also prevents warnings from LTO builds. 8729 */ 8730 # if !defined(USE_QUADMATH) && \ 8731 (NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLINFBYTES) || \ 8732 NVSIZE == DOUBLESIZE && defined(DOUBLEINFBYTES)) 8733 INFNAN_U8_NV_DECL PL_inf; 8734 # else 8735 INFNAN_NV_U8_DECL PL_inf; 8736 # endif 8737 8738 # if !defined(USE_QUADMATH) && \ 8739 (NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLNANBYTES) || \ 8740 NVSIZE == DOUBLESIZE && defined(DOUBLENANBYTES)) 8741 INFNAN_U8_NV_DECL PL_nan; 8742 # else 8743 INFNAN_NV_U8_DECL PL_nan; 8744 # endif 8745 8746 #endif 8747 8748 END_EXTERN_C 8749 8750 /* If you have not defined NV_INF/NV_NAN (like for example win32/win32.h), 8751 * we will define NV_INF/NV_NAN as the nv part of the global const 8752 * PL_inf/PL_nan. Note, however, that the preexisting NV_INF/NV_NAN 8753 * might not be a compile-time constant, in which case it cannot be 8754 * used to initialize PL_inf/PL_nan above. */ 8755 #ifndef NV_INF 8756 # define NV_INF PL_inf.nv 8757 #endif 8758 #ifndef NV_NAN 8759 # define NV_NAN PL_nan.nv 8760 #endif 8761 8762 /* NaNs (not-a-numbers) can carry payload bits, in addition to 8763 * "nan-ness". Part of the payload is the quiet/signaling bit. 8764 * To back up a bit (harhar): 8765 * 8766 * For IEEE 754 64-bit formats [1]: 8767 * 8768 * s 000 (mantissa all-zero) zero 8769 * s 000 (mantissa non-zero) subnormals (denormals) 8770 * s 001 ... 7fe normals 8771 * s 7ff q nan 8772 * 8773 * For IEEE 754 128-bit formats: 8774 * 8775 * s 0000 (mantissa all-zero) zero 8776 * s 0000 (mantissa non-zero) subnormals (denormals) 8777 * s 0001 ... 7ffe normals 8778 * s 7fff q nan 8779 * 8780 * [1] this looks like big-endian, but applies equally to little-endian. 8781 * 8782 * s = Sign bit. Yes, zeros and nans can have negative sign, 8783 * the interpretation is application-specific. 8784 * 8785 * q = Quietness bit, the interpretation is platform-specific. 8786 * Most platforms have the most significant bit being one 8787 * meaning quiet, but some (older mips, hppa) have the msb 8788 * being one meaning signaling. Note that the above means 8789 * that on most platforms there cannot be signaling nan with 8790 * zero payload because that is identical with infinity; 8791 * while conversely on older mips/hppa there cannot be a quiet nan 8792 * because that is identical with infinity. 8793 * 8794 * Moreover, whether there is any behavioral difference 8795 * between quiet and signaling NaNs, depends on the platform. 8796 * 8797 * x86 80-bit extended precision is different, the mantissa bits: 8798 * 8799 * 63 62 61 30387+ pre-387 visual c 8800 * -------- ---- -------- -------- 8801 * 0 0 0 invalid infinity 8802 * 0 0 1 invalid snan 8803 * 0 1 0 invalid snan 8804 * 0 1 1 invalid snan 8805 * 1 0 0 infinity snan 1.#INF 8806 * 1 0 1 snan 1.#SNAN 8807 * 1 1 0 qnan -1.#IND (x86 chooses this to negative) 8808 * 1 1 1 qnan 1.#QNAN 8809 * 8810 * This means that in this format there are 61 bits available 8811 * for the nan payload. 8812 * 8813 * Note that the 32-bit x86 ABI cannot do signaling nans: the x87 8814 * simply cannot preserve the bit. You can either use the 80-bit 8815 * extended precision (long double, -Duselongdouble), or use x86-64. 8816 * 8817 * In all platforms, the payload bytes (and bits, some of them are 8818 * often in a partial byte) themselves can be either all zero (x86), 8819 * all one (sparc or mips), or a mixture: in IEEE 754 128-bit double 8820 * or in a double-double, the first half of the payload can follow the 8821 * native double, while in the second half the payload can be all 8822 * zeros. (Therefore the mask for payload bits is not necessarily 8823 * identical to bit complement of the NaN.) Another way of putting 8824 * this: the payload for the default NaN might not be zero. 8825 * 8826 * For the x86 80-bit long doubles, the trailing bytes (the 80 bits 8827 * being 'packaged' in either 12 or 16 bytes) can be whatever random 8828 * garbage. 8829 * 8830 * Furthermore, the semantics of the sign bit on NaNs are platform-specific. 8831 * On normal floats, the sign bit being on means negative. But this may, 8832 * or may not, be reverted on NaNs: in other words, the default NaN might 8833 * have the sign bit on, and therefore look like negative if you look 8834 * at it at the bit level. 8835 * 8836 * NaN payloads are not propagated even on copies, or in arithmetics. 8837 * They *might* be, according to some rules, on your particular 8838 * cpu/os/compiler/libraries, but no guarantees. 8839 * 8840 * To summarize, on most platforms, and for 64-bit doubles 8841 * (using big-endian ordering here): 8842 * 8843 * [7FF8000000000000..7FFFFFFFFFFFFFFF] quiet 8844 * [FFF8000000000000..FFFFFFFFFFFFFFFF] quiet 8845 * [7FF0000000000001..7FF7FFFFFFFFFFFF] signaling 8846 * [FFF0000000000001..FFF7FFFFFFFFFFFF] signaling 8847 * 8848 * The C99 nan() is supposed to generate *quiet* NaNs. 8849 * 8850 * Note the asymmetry: 8851 * The 7FF0000000000000 is positive infinity, 8852 * the FFF0000000000000 is negative infinity. 8853 */ 8854 8855 /* NVMANTBITS is the number of _real_ mantissa bits in an NV. 8856 * For the standard IEEE 754 fp this number is usually one less that 8857 * *DBL_MANT_DIG because of the implicit (aka hidden) bit, which isn't 8858 * real. For the 80-bit extended precision formats (x86*), the number 8859 * of mantissa bits... depends. For normal floats, it's 64. But for 8860 * the inf/nan, it's different (zero for inf, 61 for nan). 8861 * NVMANTBITS works for normal floats. */ 8862 8863 /* We do not want to include the quiet/signaling bit. */ 8864 #define NV_NAN_BITS (NVMANTBITS - 1) 8865 8866 #if defined(USE_LONG_DOUBLE) && NVSIZE > DOUBLESIZE 8867 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN 8868 # define NV_NAN_QS_BYTE_OFFSET 13 8869 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN 8870 # define NV_NAN_QS_BYTE_OFFSET 2 8871 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN 8872 # define NV_NAN_QS_BYTE_OFFSET 7 8873 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN 8874 # define NV_NAN_QS_BYTE_OFFSET 2 8875 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE 8876 # define NV_NAN_QS_BYTE_OFFSET 13 8877 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE 8878 # define NV_NAN_QS_BYTE_OFFSET 1 8879 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE 8880 # define NV_NAN_QS_BYTE_OFFSET 9 8881 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE 8882 # define NV_NAN_QS_BYTE_OFFSET 6 8883 # else 8884 # error "Unexpected long double format" 8885 # endif 8886 #else 8887 # ifdef USE_QUADMATH 8888 # ifdef NV_LITTLE_ENDIAN 8889 # define NV_NAN_QS_BYTE_OFFSET 13 8890 # elif defined(NV_BIG_ENDIAN) 8891 # define NV_NAN_QS_BYTE_OFFSET 2 8892 # else 8893 # error "Unexpected quadmath format" 8894 # endif 8895 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_LITTLE_ENDIAN 8896 # define NV_NAN_QS_BYTE_OFFSET 2 8897 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_BIG_ENDIAN 8898 # define NV_NAN_QS_BYTE_OFFSET 1 8899 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_LITTLE_ENDIAN 8900 # define NV_NAN_QS_BYTE_OFFSET 6 8901 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_BIG_ENDIAN 8902 # define NV_NAN_QS_BYTE_OFFSET 1 8903 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN 8904 # define NV_NAN_QS_BYTE_OFFSET 13 8905 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN 8906 # define NV_NAN_QS_BYTE_OFFSET 2 8907 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_LE_BE 8908 # define NV_NAN_QS_BYTE_OFFSET 2 /* bytes 4 5 6 7 0 1 2 3 (MSB 7) */ 8909 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_BE_LE 8910 # define NV_NAN_QS_BYTE_OFFSET 5 /* bytes 3 2 1 0 7 6 5 4 (MSB 7) */ 8911 # else 8912 /* For example the VAX formats should never 8913 * get here because they do not have NaN. */ 8914 # error "Unexpected double format" 8915 # endif 8916 #endif 8917 /* NV_NAN_QS_BYTE is the byte to test for the quiet/signaling */ 8918 #define NV_NAN_QS_BYTE(nvp) (((U8*)(nvp))[NV_NAN_QS_BYTE_OFFSET]) 8919 /* NV_NAN_QS_BIT is the bit to test in the NV_NAN_QS_BYTE_OFFSET 8920 * for the quiet/signaling */ 8921 #if defined(USE_LONG_DOUBLE) && \ 8922 (LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN || \ 8923 LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN) 8924 # define NV_NAN_QS_BIT_SHIFT 6 /* 0x40 */ 8925 #elif defined(USE_LONG_DOUBLE) && \ 8926 (LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE || \ 8927 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE || \ 8928 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE || \ 8929 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE) 8930 # define NV_NAN_QS_BIT_SHIFT 3 /* 0x08, but not via NV_NAN_BITS */ 8931 #else 8932 # define NV_NAN_QS_BIT_SHIFT ((NV_NAN_BITS) % 8) /* usually 3, or 0x08 */ 8933 #endif 8934 #define NV_NAN_QS_BIT (1 << (NV_NAN_QS_BIT_SHIFT)) 8935 /* NV_NAN_QS_BIT_OFFSET is the bit offset from the beginning of a NV 8936 * (bytes ordered big-endianly) for the quiet/signaling bit 8937 * for the quiet/signaling */ 8938 #define NV_NAN_QS_BIT_OFFSET \ 8939 (8 * (NV_NAN_QS_BYTE_OFFSET) + (NV_NAN_QS_BIT_SHIFT)) 8940 /* NV_NAN_QS_QUIET (always defined) is true if the NV_NAN_QS_QS_BIT being 8941 * on indicates quiet NaN. NV_NAN_QS_SIGNALING (also always defined) 8942 * is true if the NV_NAN_QS_BIT being on indicates signaling NaN. */ 8943 #define NV_NAN_QS_QUIET \ 8944 ((NV_NAN_QS_BYTE(PL_nan.u8) & NV_NAN_QS_BIT) == NV_NAN_QS_BIT) 8945 #define NV_NAN_QS_SIGNALING (!(NV_NAN_QS_QUIET)) 8946 #define NV_NAN_QS_TEST(nvp) (NV_NAN_QS_BYTE(nvp) & NV_NAN_QS_BIT) 8947 /* NV_NAN_IS_QUIET() returns true if the NV behind nvp is a NaN, 8948 * whether it is a quiet NaN, NV_NAN_IS_SIGNALING() if a signaling NaN. 8949 * Note however that these do not check whether the nvp is a NaN. */ 8950 #define NV_NAN_IS_QUIET(nvp) \ 8951 (NV_NAN_QS_TEST(nvp) == (NV_NAN_QS_QUIET ? NV_NAN_QS_BIT : 0)) 8952 #define NV_NAN_IS_SIGNALING(nvp) \ 8953 (NV_NAN_QS_TEST(nvp) == (NV_NAN_QS_QUIET ? 0 : NV_NAN_QS_BIT)) 8954 #define NV_NAN_SET_QUIET(nvp) \ 8955 (NV_NAN_QS_QUIET ? \ 8956 (NV_NAN_QS_BYTE(nvp) |= NV_NAN_QS_BIT) : \ 8957 (NV_NAN_QS_BYTE(nvp) &= ~NV_NAN_QS_BIT)) 8958 #define NV_NAN_SET_SIGNALING(nvp) \ 8959 (NV_NAN_QS_QUIET ? \ 8960 (NV_NAN_QS_BYTE(nvp) &= ~NV_NAN_QS_BIT) : \ 8961 (NV_NAN_QS_BYTE(nvp) |= NV_NAN_QS_BIT)) 8962 #define NV_NAN_QS_XOR(nvp) (NV_NAN_QS_BYTE(nvp) ^= NV_NAN_QS_BIT) 8963 8964 /* NV_NAN_PAYLOAD_MASK: masking the nan payload bits. 8965 * 8966 * NV_NAN_PAYLOAD_PERM: permuting the nan payload bytes. 8967 * 0xFF means "don't go here".*/ 8968 8969 /* Shorthands to avoid typoses. */ 8970 #define NV_NAN_PAYLOAD_MASK_SKIP_EIGHT \ 8971 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 8972 #define NV_NAN_PAYLOAD_PERM_SKIP_EIGHT \ 8973 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff 8974 #define NV_NAN_PAYLOAD_PERM_0_TO_7 \ 8975 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7 8976 #define NV_NAN_PAYLOAD_PERM_7_TO_0 \ 8977 0x7, 0x6, 0x5, 0x4, 0x3, 0x2, 0x1, 0x0 8978 #define NV_NAN_PAYLOAD_MASK_IEEE_754_128_LE \ 8979 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 8980 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f, 0x00, 0x00 8981 #define NV_NAN_PAYLOAD_PERM_IEEE_754_128_LE \ 8982 NV_NAN_PAYLOAD_PERM_0_TO_7, \ 8983 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xFF, 0xFF 8984 #define NV_NAN_PAYLOAD_MASK_IEEE_754_128_BE \ 8985 0x00, 0x00, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, \ 8986 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff 8987 #define NV_NAN_PAYLOAD_PERM_IEEE_754_128_BE \ 8988 0xFF, 0xFF, 0xd, 0xc, 0xb, 0xa, 0x9, 0x8, \ 8989 NV_NAN_PAYLOAD_PERM_7_TO_0 8990 #define NV_NAN_PAYLOAD_MASK_IEEE_754_64_LE \ 8991 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x00 8992 #define NV_NAN_PAYLOAD_PERM_IEEE_754_64_LE \ 8993 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0xFF 8994 #define NV_NAN_PAYLOAD_MASK_IEEE_754_64_BE \ 8995 0x00, 0x07, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff 8996 #define NV_NAN_PAYLOAD_PERM_IEEE_754_64_BE \ 8997 0xFF, 0x6, 0x5, 0x4, 0x3, 0x2, 0x1, 0x0 8998 8999 #if defined(USE_LONG_DOUBLE) && NVSIZE > DOUBLESIZE 9000 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN 9001 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_LE 9002 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_LE 9003 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN 9004 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_BE 9005 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_BE 9006 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN 9007 # if LONG_DOUBLESIZE == 10 9008 # define NV_NAN_PAYLOAD_MASK \ 9009 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, \ 9010 0x00, 0x00 9011 # define NV_NAN_PAYLOAD_PERM \ 9012 NV_NAN_PAYLOAD_PERM_0_TO_7, 0xFF, 0xFF 9013 # elif LONG_DOUBLESIZE == 12 9014 # define NV_NAN_PAYLOAD_MASK \ 9015 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, \ 9016 0x00, 0x00, 0x00, 0x00 9017 # define NV_NAN_PAYLOAD_PERM \ 9018 NV_NAN_PAYLOAD_PERM_0_TO_7, 0xFF, 0xFF, 0xFF, 0xFF 9019 # elif LONG_DOUBLESIZE == 16 9020 # define NV_NAN_PAYLOAD_MASK \ 9021 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, \ 9022 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 9023 # define NV_NAN_PAYLOAD_PERM \ 9024 NV_NAN_PAYLOAD_PERM_0_TO_7, \ 9025 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF 9026 # else 9027 # error "Unexpected x86 80-bit little-endian long double format" 9028 # endif 9029 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN 9030 # if LONG_DOUBLESIZE == 10 9031 # define NV_NAN_PAYLOAD_MASK \ 9032 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, \ 9033 0xff, 0xff 9034 # define NV_NAN_PAYLOAD_PERM \ 9035 NV_NAN_PAYLOAD_PERM_7_TO_0, 0xFF, 0xFF 9036 # elif LONG_DOUBLESIZE == 12 9037 # define NV_NAN_PAYLOAD_MASK \ 9038 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, \ 9039 0xff, 0xff, 0x00, 0x00 9040 # define NV_NAN_PAYLOAD_PERM \ 9041 NV_NAN_PAYLOAD_PERM_7_TO_0, 0xFF, 0xFF, 0xFF, 0xFF 9042 # elif LONG_DOUBLESIZE == 16 9043 # define NV_NAN_PAYLOAD_MASK \ 9044 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, \ 9045 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 9046 # define NV_NAN_PAYLOAD_PERM \ 9047 NV_NAN_PAYLOAD_PERM_7_TO_0, \ 9048 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF 9049 # else 9050 # error "Unexpected x86 80-bit big-endian long double format" 9051 # endif 9052 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE 9053 /* For double-double we assume only the first double (in LE or BE terms) 9054 * is used for NaN. */ 9055 # define NV_NAN_PAYLOAD_MASK \ 9056 NV_NAN_PAYLOAD_MASK_SKIP_EIGHT, NV_NAN_PAYLOAD_MASK_IEEE_754_64_LE 9057 # define NV_NAN_PAYLOAD_PERM \ 9058 NV_NAN_PAYLOAD_PERM_SKIP_EIGHT, NV_NAN_PAYLOAD_PERM_IEEE_754_64_LE 9059 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE 9060 # define NV_NAN_PAYLOAD_MASK \ 9061 NV_NAN_PAYLOAD_MASK_IEEE_754_64_BE 9062 # define NV_NAN_PAYLOAD_PERM \ 9063 NV_NAN_PAYLOAD_PERM_IEEE_754_64_BE 9064 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE 9065 # define NV_NAN_PAYLOAD_MASK \ 9066 NV_NAN_PAYLOAD_MASK_IEEE_754_64_LE 9067 # define NV_NAN_PAYLOAD_PERM \ 9068 NV_NAN_PAYLOAD_PERM_IEEE_754_64_LE 9069 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE 9070 # define NV_NAN_PAYLOAD_MASK \ 9071 NV_NAN_PAYLOAD_MASK_SKIP_EIGHT, NV_NAN_PAYLOAD_MASK_IEEE_754_64_BE 9072 # define NV_NAN_PAYLOAD_PERM \ 9073 NV_NAN_PAYLOAD_PERM_SKIP_EIGHT, NV_NAN_PAYLOAD_PERM_IEEE_754_64_BE 9074 # else 9075 # error "Unexpected long double format" 9076 # endif 9077 #else 9078 # ifdef USE_QUADMATH /* quadmath is not long double */ 9079 # ifdef NV_LITTLE_ENDIAN 9080 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_LE 9081 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_LE 9082 # elif defined(NV_BIG_ENDIAN) 9083 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_BE 9084 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_BE 9085 # else 9086 # error "Unexpected quadmath format" 9087 # endif 9088 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_LITTLE_ENDIAN 9089 # define NV_NAN_PAYLOAD_MASK 0xff, 0xff, 0x07, 0x00 9090 # define NV_NAN_PAYLOAD_PERM 0x0, 0x1, 0x2, 0xFF 9091 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_BIG_ENDIAN 9092 # define NV_NAN_PAYLOAD_MASK 0x00, 0x07, 0xff, 0xff 9093 # define NV_NAN_PAYLOAD_PERM 0xFF, 0x2, 0x1, 0x0 9094 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_LITTLE_ENDIAN 9095 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_64_LE 9096 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_64_LE 9097 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_BIG_ENDIAN 9098 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_64_BE 9099 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_64_BE 9100 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN 9101 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_LE 9102 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_LE 9103 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN 9104 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_BE 9105 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_BE 9106 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_LE_BE 9107 # define NV_NAN_PAYLOAD_MASK 0xff, 0xff, 0x07, 0x00, 0xff, 0xff, 0xff, 0xff 9108 # define NV_NAN_PAYLOAD_PERM 0x4, 0x5, 0x6, 0xFF, 0x0, 0x1, 0x2, 0x3 9109 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_BE_LE 9110 # define NV_NAN_PAYLOAD_MASK 0xff, 0xff, 0xff, 0xff, 0x00, 0x07, 0xff, 0xff 9111 # define NV_NAN_PAYLOAD_PERM 0x3, 0x2, 0x1, 0x0, 0xFF, 0x6, 0x5, 0x4 9112 # else 9113 # error "Unexpected double format" 9114 # endif 9115 #endif 9116 9117 #endif /* DOUBLE_HAS_NAN */ 9118 9119 /* these are used to faciliate the env var PERL_RAND_SEED, 9120 * which allows consistent behavior from code that calls 9121 * srand() with no arguments, either explicitly or implicitly. 9122 */ 9123 #define PERL_SRAND_OVERRIDE_NEXT() PERL_XORSHIFT32_A(PL_srand_override_next); 9124 9125 #define PERL_SRAND_OVERRIDE_NEXT_INIT() STMT_START { \ 9126 PL_srand_override = PL_srand_override_next; \ 9127 PERL_SRAND_OVERRIDE_NEXT(); \ 9128 } STMT_END 9129 9130 #define PERL_SRAND_OVERRIDE_GET(into) STMT_START { \ 9131 into= PL_srand_override; \ 9132 PERL_SRAND_OVERRIDE_NEXT_INIT(); \ 9133 } STMT_END 9134 9135 #define PERL_SRAND_OVERRIDE_NEXT_CHILD() STMT_START { \ 9136 PERL_XORSHIFT32_B(PL_srand_override_next); \ 9137 PERL_SRAND_OVERRIDE_NEXT_INIT(); \ 9138 } STMT_END 9139 9140 #define PERL_SRAND_OVERRIDE_NEXT_PARENT() \ 9141 PERL_SRAND_OVERRIDE_NEXT() 9142 9143 /* in something like 9144 * 9145 * perl -le'sub f { eval "BEGIN{ f() }" }' 9146 * 9147 * Each iteration chews up 8 stacks frames, and we will eventually SEGV 9148 * due to C stack overflow. 9149 * 9150 * This define provides a maximum limit to prevent the SEGV. Such code is 9151 * unusual, so it unlikely we need a very large number here. 9152 */ 9153 #ifndef PERL_MAX_NESTED_EVAL_BEGIN_BLOCKS_DEFAULT 9154 #define PERL_MAX_NESTED_EVAL_BEGIN_BLOCKS_DEFAULT 1000 9155 #endif 9156 /* ${^MAX_NESTED_EVAL_BEGIN_BLOCKS} */ 9157 #define PERL_VAR_MAX_NESTED_EVAL_BEGIN_BLOCKS "\015AX_NESTED_EVAL_BEGIN_BLOCKS" 9158 9159 /* Defines like this make it easier to do porting/diag.t. They are no- 9160 * ops that return their argument which can be used to hint to diag.t 9161 * that a string is actually an error message. By putting the category 9162 * information into the macro name it considerably simplifies extended 9163 * diag.t to support these cases. Feel free to add more. 9164 * 9165 * While it seems tempting to try to convert all of our diagnostics to 9166 * this format, it would miss part of the point of diag.t in that it 9167 * detects NEW diagnostics, which would not necessarily use these 9168 * macros. The macros instead exist where we know we have an error 9169 * message that isnt being picked up by diag.t because it is declared 9170 * as a string independently of the function it is fed to, something 9171 * diag.t can never handle right without help. 9172 */ 9173 #define PERL_DIAG_STR_(x) ("" x "") 9174 #define PERL_DIAG_WARN_SYNTAX(x) PERL_DIAG_STR_(x) 9175 #define PERL_DIAG_DIE_SYNTAX(x) PERL_DIAG_STR_(x) 9176 9177 #ifndef PERL_STOP_PARSING_AFTER_N_ERRORS 9178 #define PERL_STOP_PARSING_AFTER_N_ERRORS 10 9179 #endif 9180 9181 #define PERL_PARSE_ERROR_COUNT(f) (f) 9182 9183 9184 /* Work around 9185 9186 https://github.com/Perl/perl5/issues/21313 9187 9188 Where gcc when generating code for 32-bit windows assumes the stack 9189 is 16 byte aligned, where the system doesn't guarantee that. 9190 9191 The code generated by gcc itself does maintain 16 byte alignment, 9192 but callbacks from the CRT or Windows APIs don't, so calls to 9193 code that is generated to SSE instructions (like the quadmath code 9194 by default), crashes when called from a callback. 9195 9196 Since other code other than quadmath might use SSE instructions, 9197 also enable this outside of quadmath builds. 9198 9199 This change is a little risky: if an XS module uses callbacks 9200 and those callbacks may also produce alignment errors, if that 9201 becomes a problem we'll need to use the nuclear option: building 9202 32-bit perl with -mstackrealign. 9203 */ 9204 #if defined(WIN32) && !defined(WIN64) && defined(__GNUC__) 9205 # define PERL_STACK_REALIGN __attribute__((force_align_arg_pointer)) 9206 #else 9207 # define PERL_STACK_REALIGN 9208 #endif 9209 9210 /* 9211 9212 (KEEP THIS LAST IN perl.h!) 9213 9214 Mention 9215 9216 NV_PRESERVES_UV 9217 9218 HAS_MKSTEMP 9219 HAS_MKSTEMPS 9220 HAS_MKDTEMP 9221 9222 HAS_GETCWD 9223 9224 HAS_MMAP 9225 HAS_MPROTECT 9226 HAS_MSYNC 9227 HAS_MADVISE 9228 HAS_MUNMAP 9229 I_SYSMMAN 9230 Mmap_t 9231 9232 NVef 9233 NVff 9234 NVgf 9235 9236 HAS_UALARM 9237 HAS_USLEEP 9238 9239 HAS_SETITIMER 9240 HAS_GETITIMER 9241 9242 HAS_SENDMSG 9243 HAS_RECVMSG 9244 HAS_READV 9245 HAS_WRITEV 9246 I_SYSUIO 9247 HAS_STRUCT_MSGHDR 9248 HAS_STRUCT_CMSGHDR 9249 9250 HAS_NL_LANGINFO 9251 9252 HAS_DIRFD 9253 9254 so that Configure picks them up. 9255 9256 (KEEP THIS LAST IN perl.h!) 9257 9258 */ 9259 9260 #endif /* Include guard */ 9261 9262 /* 9263 * ex: set ts=8 sts=4 sw=4 et: 9264 */ 9265