1 #if defined(USE_THREADS) || defined(USE_ITHREADS) 2 3 #ifdef WIN32 4 # include <win32thread.h> 5 #else 6 # ifdef OLD_PTHREADS_API /* Here be dragons. */ 7 # define DETACH(t) \ 8 STMT_START { \ 9 if (pthread_detach(&(t)->self)) { \ 10 MUTEX_UNLOCK(&(t)->mutex); \ 11 Perl_croak_nocontext("panic: DETACH"); \ 12 } \ 13 } STMT_END 14 15 # define PERL_GET_CONTEXT Perl_get_context() 16 # define PERL_SET_CONTEXT(t) Perl_set_context((void*)t) 17 18 # define PTHREAD_GETSPECIFIC_INT 19 # ifdef DJGPP 20 # define pthread_addr_t any_t 21 # define NEED_PTHREAD_INIT 22 # define PTHREAD_CREATE_JOINABLE (1) 23 # endif 24 # ifdef __OPEN_VM 25 # define pthread_addr_t void * 26 # endif 27 # ifdef VMS 28 # define pthread_attr_init(a) pthread_attr_create(a) 29 # define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_setdetach_np(a,s) 30 # define PTHREAD_CREATE(t,a,s,d) pthread_create(t,a,s,d) 31 # define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d)) 32 # define pthread_mutexattr_init(a) pthread_mutexattr_create(a) 33 # define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t) 34 # endif 35 # if defined(__hpux) && defined(__ux_version) && __ux_version <= 1020 36 # define pthread_attr_init(a) pthread_attr_create(a) 37 /* XXX pthread_setdetach_np() missing in DCE threads on HP-UX 10.20 */ 38 # define PTHREAD_ATTR_SETDETACHSTATE(a,s) (0) 39 # define PTHREAD_CREATE(t,a,s,d) pthread_create(t,a,s,d) 40 # define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d)) 41 # define pthread_mutexattr_init(a) pthread_mutexattr_create(a) 42 # define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t) 43 # endif 44 # if defined(DJGPP) || defined(__OPEN_VM) 45 # define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,&(s)) 46 # define YIELD pthread_yield(NULL) 47 # endif 48 # endif 49 # if !defined(__hpux) || !defined(__ux_version) || __ux_version > 1020 50 # define pthread_mutexattr_default NULL 51 # define pthread_condattr_default NULL 52 # endif 53 #endif 54 55 #ifndef PTHREAD_CREATE 56 /* You are not supposed to pass NULL as the 2nd arg of PTHREAD_CREATE(). */ 57 # define PTHREAD_CREATE(t,a,s,d) pthread_create(t,&(a),s,d) 58 #endif 59 60 #ifndef PTHREAD_ATTR_SETDETACHSTATE 61 # define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,s) 62 #endif 63 64 #ifndef PTHREAD_CREATE_JOINABLE 65 # ifdef OLD_PTHREAD_CREATE_JOINABLE 66 # define PTHREAD_CREATE_JOINABLE OLD_PTHREAD_CREATE_JOINABLE 67 # else 68 # define PTHREAD_CREATE_JOINABLE 0 /* Panic? No, guess. */ 69 # endif 70 #endif 71 72 #ifdef I_MACH_CTHREADS 73 74 /* cthreads interface */ 75 76 /* #include <mach/cthreads.h> is in perl.h #ifdef I_MACH_CTHREADS */ 77 78 #define MUTEX_INIT(m) \ 79 STMT_START { \ 80 *m = mutex_alloc(); \ 81 if (*m) { \ 82 mutex_init(*m); \ 83 } else { \ 84 Perl_croak_nocontext("panic: MUTEX_INIT"); \ 85 } \ 86 } STMT_END 87 88 #define MUTEX_LOCK(m) mutex_lock(*m) 89 #define MUTEX_UNLOCK(m) mutex_unlock(*m) 90 #define MUTEX_DESTROY(m) \ 91 STMT_START { \ 92 mutex_free(*m); \ 93 *m = 0; \ 94 } STMT_END 95 96 #define COND_INIT(c) \ 97 STMT_START { \ 98 *c = condition_alloc(); \ 99 if (*c) { \ 100 condition_init(*c); \ 101 } \ 102 else { \ 103 Perl_croak_nocontext("panic: COND_INIT"); \ 104 } \ 105 } STMT_END 106 107 #define COND_SIGNAL(c) condition_signal(*c) 108 #define COND_BROADCAST(c) condition_broadcast(*c) 109 #define COND_WAIT(c, m) condition_wait(*c, *m) 110 #define COND_DESTROY(c) \ 111 STMT_START { \ 112 condition_free(*c); \ 113 *c = 0; \ 114 } STMT_END 115 116 #define THREAD_CREATE(thr, f) (thr->self = cthread_fork(f, thr), 0) 117 #define THREAD_POST_CREATE(thr) 118 119 #define THREAD_RET_TYPE any_t 120 #define THREAD_RET_CAST(x) ((any_t) x) 121 122 #define DETACH(t) cthread_detach(t->self) 123 #define JOIN(t, avp) (*(avp) = (AV *)cthread_join(t->self)) 124 125 #define PERL_SET_CONTEXT(t) cthread_set_data(cthread_self(), t) 126 #define PERL_GET_CONTEXT cthread_data(cthread_self()) 127 128 #define INIT_THREADS cthread_init() 129 #define YIELD cthread_yield() 130 #define ALLOC_THREAD_KEY NOOP 131 #define FREE_THREAD_KEY NOOP 132 #define SET_THREAD_SELF(thr) (thr->self = cthread_self()) 133 134 #endif /* I_MACH_CTHREADS */ 135 136 #ifndef YIELD 137 # ifdef SCHED_YIELD 138 # define YIELD SCHED_YIELD 139 # else 140 # ifdef HAS_SCHED_YIELD 141 # define YIELD sched_yield() 142 # else 143 # ifdef HAS_PTHREAD_YIELD 144 /* pthread_yield(NULL) platforms are expected 145 * to have #defined YIELD for themselves. */ 146 # define YIELD pthread_yield() 147 # endif 148 # endif 149 # endif 150 #endif 151 152 #ifdef __hpux 153 # define MUTEX_INIT_NEEDS_MUTEX_ZEROED 154 #endif 155 156 #ifndef MUTEX_INIT 157 158 # ifdef MUTEX_INIT_NEEDS_MUTEX_ZEROED 159 /* Temporary workaround, true bug is deeper. --jhi 1999-02-25 */ 160 # define MUTEX_INIT(m) \ 161 STMT_START { \ 162 Zero((m), 1, perl_mutex); \ 163 if (pthread_mutex_init((m), pthread_mutexattr_default)) \ 164 Perl_croak_nocontext("panic: MUTEX_INIT"); \ 165 } STMT_END 166 # else 167 # define MUTEX_INIT(m) \ 168 STMT_START { \ 169 if (pthread_mutex_init((m), pthread_mutexattr_default)) \ 170 Perl_croak_nocontext("panic: MUTEX_INIT"); \ 171 } STMT_END 172 # endif 173 174 # define MUTEX_LOCK(m) \ 175 STMT_START { \ 176 if (pthread_mutex_lock((m))) \ 177 Perl_croak_nocontext("panic: MUTEX_LOCK"); \ 178 } STMT_END 179 180 # define MUTEX_UNLOCK(m) \ 181 STMT_START { \ 182 if (pthread_mutex_unlock((m))) \ 183 Perl_croak_nocontext("panic: MUTEX_UNLOCK"); \ 184 } STMT_END 185 186 # define MUTEX_DESTROY(m) \ 187 STMT_START { \ 188 if (pthread_mutex_destroy((m))) \ 189 Perl_croak_nocontext("panic: MUTEX_DESTROY"); \ 190 } STMT_END 191 #endif /* MUTEX_INIT */ 192 193 #ifndef COND_INIT 194 # define COND_INIT(c) \ 195 STMT_START { \ 196 if (pthread_cond_init((c), pthread_condattr_default)) \ 197 Perl_croak_nocontext("panic: COND_INIT"); \ 198 } STMT_END 199 200 # define COND_SIGNAL(c) \ 201 STMT_START { \ 202 if (pthread_cond_signal((c))) \ 203 Perl_croak_nocontext("panic: COND_SIGNAL"); \ 204 } STMT_END 205 206 # define COND_BROADCAST(c) \ 207 STMT_START { \ 208 if (pthread_cond_broadcast((c))) \ 209 Perl_croak_nocontext("panic: COND_BROADCAST"); \ 210 } STMT_END 211 212 # define COND_WAIT(c, m) \ 213 STMT_START { \ 214 if (pthread_cond_wait((c), (m))) \ 215 Perl_croak_nocontext("panic: COND_WAIT"); \ 216 } STMT_END 217 218 # define COND_DESTROY(c) \ 219 STMT_START { \ 220 if (pthread_cond_destroy((c))) \ 221 Perl_croak_nocontext("panic: COND_DESTROY"); \ 222 } STMT_END 223 #endif /* COND_INIT */ 224 225 /* DETACH(t) must only be called while holding t->mutex */ 226 #ifndef DETACH 227 # define DETACH(t) \ 228 STMT_START { \ 229 if (pthread_detach((t)->self)) { \ 230 MUTEX_UNLOCK(&(t)->mutex); \ 231 Perl_croak_nocontext("panic: DETACH"); \ 232 } \ 233 } STMT_END 234 #endif /* DETACH */ 235 236 #ifndef JOIN 237 # define JOIN(t, avp) \ 238 STMT_START { \ 239 if (pthread_join((t)->self, (void**)(avp))) \ 240 Perl_croak_nocontext("panic: pthread_join"); \ 241 } STMT_END 242 #endif /* JOIN */ 243 244 #ifndef PERL_GET_CONTEXT 245 # define PERL_GET_CONTEXT pthread_getspecific(PL_thr_key) 246 #endif 247 248 #ifndef PERL_SET_CONTEXT 249 # define PERL_SET_CONTEXT(t) \ 250 STMT_START { \ 251 if (pthread_setspecific(PL_thr_key, (void *)(t))) \ 252 Perl_croak_nocontext("panic: pthread_setspecific"); \ 253 } STMT_END 254 #endif /* PERL_SET_CONTEXT */ 255 256 #ifndef INIT_THREADS 257 # ifdef NEED_PTHREAD_INIT 258 # define INIT_THREADS pthread_init() 259 # endif 260 #endif 261 262 #ifndef ALLOC_THREAD_KEY 263 # define ALLOC_THREAD_KEY \ 264 STMT_START { \ 265 if (pthread_key_create(&PL_thr_key, 0)) { \ 266 PerlIO_printf(PerlIO_stderr(), "panic: pthread_key_create"); \ 267 exit(1); \ 268 } \ 269 } STMT_END 270 #endif 271 272 #ifndef FREE_THREAD_KEY 273 # define FREE_THREAD_KEY \ 274 STMT_START { \ 275 pthread_key_delete(PL_thr_key); \ 276 } STMT_END 277 #endif 278 279 #ifndef THREAD_RET_TYPE 280 # define THREAD_RET_TYPE void * 281 # define THREAD_RET_CAST(p) ((void *)(p)) 282 #endif /* THREAD_RET */ 283 284 #if defined(USE_THREADS) 285 286 /* Accessor for per-thread SVs */ 287 # define THREADSV(i) (thr->threadsvp[i]) 288 289 /* 290 * LOCK_SV_MUTEX and UNLOCK_SV_MUTEX are performance-critical. Here, we 291 * try only locking them if there may be more than one thread in existence. 292 * Systems with very fast mutexes (and/or slow conditionals) may wish to 293 * remove the "if (threadnum) ..." test. 294 * XXX do NOT use C<if (PL_threadnum) ...> -- it sets up race conditions! 295 */ 296 # define LOCK_SV_MUTEX MUTEX_LOCK(&PL_sv_mutex) 297 # define UNLOCK_SV_MUTEX MUTEX_UNLOCK(&PL_sv_mutex) 298 # define LOCK_STRTAB_MUTEX MUTEX_LOCK(&PL_strtab_mutex) 299 # define UNLOCK_STRTAB_MUTEX MUTEX_UNLOCK(&PL_strtab_mutex) 300 # define LOCK_CRED_MUTEX MUTEX_LOCK(&PL_cred_mutex) 301 # define UNLOCK_CRED_MUTEX MUTEX_UNLOCK(&PL_cred_mutex) 302 # define LOCK_FDPID_MUTEX MUTEX_LOCK(&PL_fdpid_mutex) 303 # define UNLOCK_FDPID_MUTEX MUTEX_UNLOCK(&PL_fdpid_mutex) 304 # define LOCK_SV_LOCK_MUTEX MUTEX_LOCK(&PL_sv_lock_mutex) 305 # define UNLOCK_SV_LOCK_MUTEX MUTEX_UNLOCK(&PL_sv_lock_mutex) 306 307 /* Values and macros for thr->flags */ 308 #define THRf_STATE_MASK 7 309 #define THRf_R_JOINABLE 0 310 #define THRf_R_JOINED 1 311 #define THRf_R_DETACHED 2 312 #define THRf_ZOMBIE 3 313 #define THRf_DEAD 4 314 315 #define THRf_DID_DIE 8 316 317 /* ThrSTATE(t) and ThrSETSTATE(t) must only be called while holding t->mutex */ 318 #define ThrSTATE(t) ((t)->flags & THRf_STATE_MASK) 319 #define ThrSETSTATE(t, s) STMT_START { \ 320 (t)->flags &= ~THRf_STATE_MASK; \ 321 (t)->flags |= (s); \ 322 DEBUG_S(PerlIO_printf(Perl_debug_log, \ 323 "thread %p set to state %d\n", (t), (s))); \ 324 } STMT_END 325 326 typedef struct condpair { 327 perl_mutex mutex; /* Protects all other fields */ 328 perl_cond owner_cond; /* For when owner changes at all */ 329 perl_cond cond; /* For cond_signal and cond_broadcast */ 330 Thread owner; /* Currently owning thread */ 331 } condpair_t; 332 333 #define MgMUTEXP(mg) (&((condpair_t *)(mg->mg_ptr))->mutex) 334 #define MgOWNERCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->owner_cond) 335 #define MgCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->cond) 336 #define MgOWNER(mg) ((condpair_t *)(mg->mg_ptr))->owner 337 338 #endif /* USE_THREADS */ 339 #endif /* USE_THREADS || USE_ITHREADS */ 340 341 #ifndef MUTEX_LOCK 342 # define MUTEX_LOCK(m) 343 #endif 344 345 #ifndef MUTEX_UNLOCK 346 # define MUTEX_UNLOCK(m) 347 #endif 348 349 #ifndef MUTEX_INIT 350 # define MUTEX_INIT(m) 351 #endif 352 353 #ifndef MUTEX_DESTROY 354 # define MUTEX_DESTROY(m) 355 #endif 356 357 #ifndef COND_INIT 358 # define COND_INIT(c) 359 #endif 360 361 #ifndef COND_SIGNAL 362 # define COND_SIGNAL(c) 363 #endif 364 365 #ifndef COND_BROADCAST 366 # define COND_BROADCAST(c) 367 #endif 368 369 #ifndef COND_WAIT 370 # define COND_WAIT(c, m) 371 #endif 372 373 #ifndef COND_DESTROY 374 # define COND_DESTROY(c) 375 #endif 376 377 #ifndef LOCK_SV_MUTEX 378 # define LOCK_SV_MUTEX 379 #endif 380 381 #ifndef UNLOCK_SV_MUTEX 382 # define UNLOCK_SV_MUTEX 383 #endif 384 385 #ifndef LOCK_STRTAB_MUTEX 386 # define LOCK_STRTAB_MUTEX 387 #endif 388 389 #ifndef UNLOCK_STRTAB_MUTEX 390 # define UNLOCK_STRTAB_MUTEX 391 #endif 392 393 #ifndef LOCK_CRED_MUTEX 394 # define LOCK_CRED_MUTEX 395 #endif 396 397 #ifndef UNLOCK_CRED_MUTEX 398 # define UNLOCK_CRED_MUTEX 399 #endif 400 401 #ifndef LOCK_FDPID_MUTEX 402 # define LOCK_FDPID_MUTEX 403 #endif 404 405 #ifndef UNLOCK_FDPID_MUTEX 406 # define UNLOCK_FDPID_MUTEX 407 #endif 408 409 #ifndef LOCK_SV_LOCK_MUTEX 410 # define LOCK_SV_LOCK_MUTEX 411 #endif 412 413 #ifndef UNLOCK_SV_LOCK_MUTEX 414 # define UNLOCK_SV_LOCK_MUTEX 415 #endif 416 417 /* THR, SET_THR, and dTHR are there for compatibility with old versions */ 418 #ifndef THR 419 # define THR PERL_GET_THX 420 #endif 421 422 #ifndef SET_THR 423 # define SET_THR(t) PERL_SET_THX(t) 424 #endif 425 426 #ifndef dTHR 427 # define dTHR dNOOP 428 #endif 429 430 #ifndef INIT_THREADS 431 # define INIT_THREADS NOOP 432 #endif 433