1after 5.003_05: 2 PERLLIB_PREFIX was not active if it matches an element of @INC 3 as a whole. 4 Do not need PERL_SBRK if crtdll-revision is >= 50. 5 Use -Zsmall-conv if crtdll-revision is >= 50 (in static perl!). 6:7: warning: #warning <dirent.h> requires <sys/types.h> 7 We compile miniperl static. It cannot fork, thus there may be 8 problems with pipes (since HAS_FORK is in 9 place). Pipes are required by makemaker. 10 We compile perl___.exe A.OUT and dynamic. It should be able to 11 fork. 12 If we can fork, we my_popen by popen unless "-|". Thus we 13 write a cooky "-1" into the pid array to indicate 14 this. 15 Apparently we can fork, and we can load dynamic extensions 16 now, though probably not simultaneously. 17 *DB tests corrected for OS/2 one-user stat[2]. 18 /bin/sh is intercepted and replaced by SH_PATH. 19 Note that having '\\' in the command line of one-arg `system' 20 would trigger call via shell. 21 Segfault with system {'ls'} 'blah'; corrected. 22 Documentation of OS/2-different features added to main PODs. 23 New buitins in Cwd:: 24 25 Cwd::current_drive 26 Cwd::sys_chdir - leaves drive as it is. 27 Cwd::change_drive 28 Cwd::sys_is_absolute - has drive letter and is_rooted 29 Cwd::sys_is_rooted - has leading [/\\] (maybe 30 after a drive) 31 Cwd::sys_is_relative - changes with current dir 32 Cwd::sys_cwd - Interface to cwd from EMX. 33 Cwd::sys_abspath(name, dir) 34 - Really really odious 35 function. Returns absolute 36 name of file which would 37 have 'name' if CWD were 'dir'. 38 Dir defaults to the current dir. 39 Cwd::extLibpath [type] - Get/set current value of extended 40 Cwd::extLibpath_set - library search path. 41 path [type] 42 The optional last argument redirects 43 to END-path if true, 44 default is to search BEGIN-path. 45 (Note that some of these may be moved to different 46 libraries - eventually). 47 Executables: 48 perl - can fork, can dynalink (but not simultaneously) 49 perl_ - can fork, cannot dynalink 50 perl__ - same as perl___, but PM. 51 perl___ - cannot fork, can dynalink. 52 The build of the first one - perl - is rather convoluted, and 53 requires a build of miniperl_. 54 55after 5.003_07: 56 custom tmpfile and tmpname which may use $TMP, $TEMP. 57 all the calls to OS/2 API wrapped so that it is safe to use 58 them under DOS (may die(), though). 59 Tested that popen works under DOS with modified PDKSH and RSX. 60 File::Copy works under DOS. 61 MakeMaker modified to work under DOS (perlmain.c.tmp and sh -c true). 62 63after 5.003_08: 64 OS2::PrfDB exports symbols as documented; 65 should work on OS/2 2.1 again. 66 uses reliable signals when spawing. 67 do not use popen() any more - no intermediate shell unless needed. 68 69after 5.003_11: 70 Functions emx_{malloc,realloc,calloc,free} are exported from DLL. 71 get_sysinfo() bugs corrected (flags were not used and wrongly defined). 72 73after 5.003_20: 74 _isterm is substituted instead of isatty, s?random instead of srand. 75 `register' disabled if -DDEBUGGING and not AOUT build: stupid SD386. 76 3-argument select() was stomping over memory. 77 78after 5.003_21: 79 Can start scripts by executing 'dir/script' and 80 'script.sh'. Form without extension will call shell only if 81 the specified file exists (will not look on path) (to prohibit 82 trying to run shell commands directly). - Needed by magic.t. 83 84after 5.003_27: 85 ALTERNATE_SHEBANG="extproc " supported, thus options on this 86 line are processed (possibly twice). -S is made legal on such 87 a line. This -S -x is not needed any more. 88 perl.dll may be used from non-EMX programs (via PERL_SYS_INIT 89 - the caller should have valid variable "env" with 90 environment). Known problems: $$ does not work - is 0, waitpid 91 returns immediately, thus Perl cannot wait for completion of 92 started programs. 93 94after 5.004_01: 95 flock emulation added (disable by setting env PERL_USE_FLOCK=0), 96 thanks to Rocco Caputo; 97 RSX bug with missing waitpid circomvented; 98 -S bug with full path with \ corrected. 99 100before 5.004_02: 101 -S switch to perl enables a search with additional extensions 102 .cmd, .btm, .bat, .pl as well. This means that if you have 103 mycmd.pl or mycmd.bat on PATH, 104 perl -S mycmd 105 will work. Perl will also look in the current directory first. 106 Moreover, a bug with \; in PATH being non-separator is fixed. 107 108after 5.004_03: 109 $^E tracks calls to CRT now. (May break if Perl masks some 110 changes to errno?) 111 $0 may be edited to longer lengths (at least under OS/2). 112 OS2::REXX->loads looks in the OS/2-ish fashion too. 113 114after 5.004_04: 115 Default perl.exe was built with a shorter stack than expected. 116 Strip extensions DLLs too (unless debugging build). 117 ./os2.c being RO could stop cp. 118 When starting scripts, Perl will find them on path (using the same 119 extensions as for -S command-line switch). If it finds magic 120 `extproc ' or `#!' cookies, it will start the scripts directly. 121 May use `cmd /c more <' as a pager. 122 If a program could not be started, this might have been hidden. 123 End of pipe was closed twice when `open'ing a pipeline. 124 125after 5.004_53: 126 Minimal thread support added. One needs to manually move pthread.h 127 128after 5.004_64: 129 Make DLL names different if thread-enabled. 130 Emit more informative internal DLL descriptions. 131 1325.004_72: 133 Updated OS2::Process (v0.2) included. 134 135after 5.004_73: 136 Fixed a bug with argv not NULL-terminated when starting scripts. 137 Support all the forms of starting scripts. 138 Support killing a child when receiving a signal during system() 139 (in two stage, on first send the same signal, on the next 140 send SIGKILL). 141 Add the same logic for scripts as in pdksh, including 142 stripping the path from #! line if needed, 143 calling EXECSHELL or COMSPEC for magic-less scripts; 144 Now pdksh is called only if one-arg system()/friends contains 145 metachars, or if magic-line asks for sh, or there is no magic 146 line and EXECSHELL is set to sh. 147 Shell is supplied the original command line if possible. 148 149after 5.005_02: 150 Can start PM programs from non-PM sessions by plain system() 151 and friends. Can start DOS/Win programs. Can start 152 fullscreen programs from non-fullscreen sessions too. 153 In fact system(P_PM,...) was broken. 154 We mangle the name of perl*.DLL, to allow coexistence of different 155 versions of Perl executables on the system. Mangling of 156 names of extension DLL is also changed, thus running two 157 different versions of the executable with loaded 158 extensions should not lead to conflicts (since 159 extension-full-name and Perl-version mangling work in the 160 same set ot 576 possible keys, this may lead to clashes). 161 $^E was reset on the second read, and contained ".\r\n" at the end. 162 163after 5.005_53: 164 Would segfault system()ing non-existing program; 165 AOUT build was hosed; 166 warning-test for getpriority() might lock the system hard on 167 pre-fixpak22 configuration (calling getpriority() on 168 non-existing process triggers a system-wide bug). 169 170 171 PrfDB was using a bug in processing XSUBs returning U32. 172 173 Variable $OS2::emx_rev implemented (string and numberic values 174 are the same as C variables _emx_rev and _emx_vprt). 175 Variable $OS2::emx_env implemented (same as C variable _emx_env). 176 Variable $OS2::os_ver implemented (_osmajor + 0.001 * _osminor). 177 178 Improved centralized management of HAB and HMQ. To get Perl's 179 HAB, call perl_hab_GET(). (After the initial call one 180 can use Perl_hab instead.) To require Perl's HMQ, 181 call perl_hmq_GET(), to release it call perl_hmq_UNSET(), 182 to obtain it between these calls use Perl_hmq. 183 HMQ management is refcounted, and the program will morph 184 itself into/from PM if required. 185 If perl.h cannot be included, hab may be obtained by Perl_hab_GET(). 186 187 New function OS2::Error(do_harderror,do_exception). Returns 188 undef if it was not called yet, otherwise bit 1 is 189 set if on previous call do_harderror was enabled, bit 190 2 is set if if on previous call do_exception was enabled. 191 This function enables/disables error popups associated with 192 hardware errors (Disk not ready etc.) and software exceptions. 193 194 New function OS2::Errors2Drive(drive). Returns undef if it was 195 not called yet, otherwise return false if Errors were 196 not requested to be written to a hard drive, or the 197 drive letter if this was requested. 198 This function may redirect error popups associated with 199 hardware errors (Disk not ready etc.) and software exceptions 200 to the file POPUPLOG.OS2 at the root directory of the 201 specified drive. Overrides OS2::Error() specified by 202 individual programs. Given argument undef will 203 disable redirection. Has global effect, persists 204 after the application exits. 205 206 New function OS2::SysInfo(). Returns a hash with system information. 207 The keys of the hash are 208 209 MAX_PATH_LENGTH, MAX_TEXT_SESSIONS, MAX_PM_SESSIONS, 210 MAX_VDM_SESSIONS, BOOT_DRIVE, DYN_PRI_VARIATION, 211 MAX_WAIT, MIN_SLICE, MAX_SLICE, PAGE_SIZE, 212 VERSION_MAJOR, VERSION_MINOR, VERSION_REVISION, 213 MS_COUNT, TIME_LOW, TIME_HIGH, TOTPHYSMEM, TOTRESMEM, 214 TOTAVAILMEM, MAXPRMEM, MAXSHMEM, TIMER_INTERVAL, 215 MAX_COMP_LENGTH, FOREGROUND_FS_SESSION, 216 FOREGROUND_PROCESS 217 218 New function OS2::BootDrive(force). Returns a letter without colon. 219 220 New functions OS2::MorphPM(serve)/OS2::UnMorphPM(serve). Transforms 221 the current application into a PM application and back. 222 The argument true means that a real message loop is 223 going to be performed. 224 OS2::MorphPM() returns the PM message queue handle as an integer. 225 226 New function OS2::Serve_Messages(force). Fake on-demand 227 retrieval of outstanding PM messages. If force is false, 228 will not dispatch messages if a real message loop is known to 229 be present. Returns number of messages retrieved. 230 Dies with "QUITing..." if WM_QUIT message is obtained. 231 232 New function OS2::Process_Messages(force [, cnt]). Retrieval 233 of PM messages until window creation/destruction. 234 If force is false, will not dispatch messages 235 if a real message loop is known to be present. 236 Returns change in number of windows. If cnt is given, 237 it is incremented by the number of messages retrieved. 238 Dies with "QUITing..." if WM_QUIT message is obtained. 239 240after 5.005_54: 241 Opening pipes from/to processes could fail if (un)appropriate 242 combination of STDIN/STDOUT was closed. 243 244 If the only shell-metachars of a command are ' 2>&1' at the 245 end of a command, it is executed without calling the external shell. 246 247after 5.005_57: 248 Make UDP sockets return correct caller address (OS2 API bug); 249 Enable TCPIPV4 defines (works with Warp 3 IAK too?!); 250 Force Unix-domain sockets to start with "/socket", convert 251 '/' to '\' in the calls; 252 Make C<system 1, $cmd> to treat $cmd as in C<system $cmd>; 253 Autopatch Configure; 254 Find name and location of g[nu]patch.exe; 255 Autocopy perl????.dll to t/ when testing; 256 257after 5.005_62: 258 Extract a lightweight DLL access module OS2::DLL from OS2::REXX 259 which would not load REXX runtime system; 260 Allow compile with os2.h which loads os2tk.h instead of os2emx.h; 261 Put the version of EMX CRTL into -D define; 262 Use _setsyserror() to store last error of OS/2 API for $^E; 263 New macro PERL_SYS_INIT3(argvp, argcp, envp); 264 Make Dynaloader return info on the failing module after failed dl_open(); 265 OS2::REXX test were done for interactive testing (were writing 266 "ok" to stderr); 267 system() and friends return -1 on failure (was 0xFF00); 268 Put the full name of executable into $^X 269 (alas, uppercased - but with /); 270 t/io/fs.t was failing on HPFS386; 271 Remove extra ';' from defines for MQ operations. 272 273pre 5.6.1: 274 Resolved: "Bad free()" messages (e.g., from DB_File) with -Zomf build. 275 The reason was: when an extension DLL was linked, the order of 276 libraries was similar to this: 277 f1.obj f2.obj libperl.lib -llibr1 -llibr2 278 (with C RTL implicitly after this). When libperl.lib overrides 279 some C RTL functions, they are correctly resolved when mentioned 280 in f1.obj and f2.obj. However, the resolution for libr1.lib and 281 libr2.lib is implementation-dependent. 282 283 With -Zomf linking the symbols are resolved for libr1.lib and 284 libr2.lib *only if* they reside in .obj-file-sections of libperl.lib 285 which were already "picked up" for symbols in f1.obj f2.obj. 286 However, libperl.lib is an import library for a .DLL, so *each 287 symbol in libperl.lib sits in its own pseudo-section*! 288 289 Corollary: only those symbol from libperl.lib which were already 290 mentioned in f1.obj f2.obj would be used for libr1.lib and 291 libr2.lib. Example: if f1.obj f2.obj do not mention calloc() but 292 libr1.lib and libr2.lib do, then .lib's will get calloc() of C RTL, 293 not one of libperl.lib. 294 295 Solution: create a small duplicate of libperl.lib with overriding 296 symbols only. Put it *after* -llibr1 -llibr2 on the link line. 297 Map strdup() and putenv() to Perl_strdup() and Perl_putenv() 298 inside this library. 299 300 Resolved: rmdir() and mkdir() do not accept trailing slashes. 301 Wrappers are implemented. 302 Resolved: when loading modules, FP mask may be erroneously changed by 303 _DLLInitTerm() (e.g., TCP32IP). 304 Solutions: a) dlopen() saves/restores the FP mask. 305 b) When starting, reset FP mask to a sane value 306 (if the DLL was compile-time linked). 307 New functions in package OS2: 308 unsigned _control87(unsigned new,unsigned mask) # as in EMX 309 unsigned get_control87() 310 # with default values good for handling exception mask: 311 unsigned set_control87_em(new=MCW_EM,mask=MCW_EM) 312 Needed to guard against other situations when the FP mask is 313 stompted upon. Apparently, IBM used a compiler (for some period 314 of time around '95?) which changes FP mask right and left... 315 Resolved: $^X was always uppercased (cosmetic). Solution: 316 use argv[0] if it differs from what the OS returns only in case. 317 Resolved: when creating PM message queues, WinCancelShutdown() was 318 not called even if the application said that it would not serve 319 messages in this queue. Could result in PM refusing to shutdown. 320 321 Solution: resolve WinCancelShutdown at run time, keep the refcount 322 of who is going to serve the queue. 323 Resolved: Perl_Deregister_MQ() segfaulted (pid/tid not initialized). 324 Resolved: FillWinError() would not fetch the error. 325 Solution: resolve WinGetLastError at run time, call it. 326 Resolved: OS2::REXX would ignore arguments given to a Perl function 327 imported into the REXX compartment via REXX_eval_with(). 328 Resolved: OS2::REXX would treat arguments given to a Perl function 329 imported into the REXX compartment via _register() as ASCIIZ 330 strings inside of binary strings. 331 Resolved: OS2::REXX did not document _register(). 332 Resolved: OS2::REXX would not report the error to REXX if an error 333 condition appeared during a call to Perl function from REXX 334 compartment. As a result, the return string was not initialized. 335 A complete example of a mini-application added to OS2::REXX. 336 README.os2 updated to reflect the current state of Perl. 337