3 * Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005
4 * by Larry Wall and others
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.
11 #if defined(USE_5005THREADS) || defined(USE_ITHREADS)
18 # include <win32thread.h>
21 # include <nw5thread.h>
23 # ifdef OLD_PTHREADS_API /* Here be dragons. */
27 if ((_eC_ = pthread_detach(&(t)->self))) { \
28 MUTEX_UNLOCK(&(t)->mutex); \
29 Perl_croak_nocontext("panic: DETACH (%d) [%s:%d]", \
30 _eC_, __FILE__, __LINE__); \
34 # define PERL_GET_CONTEXT Perl_get_context()
35 # define PERL_SET_CONTEXT(t) Perl_set_context((void*)t)
37 # define PTHREAD_GETSPECIFIC_INT
39 # define pthread_addr_t any_t
40 # define NEED_PTHREAD_INIT
41 # define PTHREAD_CREATE_JOINABLE (1)
44 # define pthread_addr_t void *
47 # define pthread_addr_t void *
48 # define pthread_create(t,a,s,d) pthread_create(t,&(a),s,d)
49 # define pthread_keycreate pthread_key_create
52 # define pthread_attr_init(a) pthread_attr_create(a)
53 # define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_setdetach_np(a,s)
54 # define PTHREAD_CREATE(t,a,s,d) pthread_create(t,a,s,d)
55 # define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d))
56 # define pthread_mutexattr_init(a) pthread_mutexattr_create(a)
57 # define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t)
59 # if defined(__hpux) && defined(__ux_version) && __ux_version <= 1020
60 # define pthread_attr_init(a) pthread_attr_create(a)
61 /* XXX pthread_setdetach_np() missing in DCE threads on HP-UX 10.20 */
62 # define PTHREAD_ATTR_SETDETACHSTATE(a,s) (0)
63 # define PTHREAD_CREATE(t,a,s,d) pthread_create(t,a,s,d)
64 # define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d))
65 # define pthread_mutexattr_init(a) pthread_mutexattr_create(a)
66 # define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t)
68 # if defined(DJGPP) || defined(__OPEN_VM) || defined(OEMVS)
69 # define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,&(s))
70 # define YIELD pthread_yield(NULL)
73 # if !defined(__hpux) || !defined(__ux_version) || __ux_version > 1020
74 # define pthread_mutexattr_default NULL
75 # define pthread_condattr_default NULL
80 #ifndef PTHREAD_CREATE
81 /* You are not supposed to pass NULL as the 2nd arg of PTHREAD_CREATE(). */
82 # define PTHREAD_CREATE(t,a,s,d) pthread_create(t,&(a),s,d)
85 #ifndef PTHREAD_ATTR_SETDETACHSTATE
86 # define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,s)
89 #ifndef PTHREAD_CREATE_JOINABLE
90 # ifdef OLD_PTHREAD_CREATE_JOINABLE
91 # define PTHREAD_CREATE_JOINABLE OLD_PTHREAD_CREATE_JOINABLE
93 # define PTHREAD_CREATE_JOINABLE 0 /* Panic? No, guess. */
98 # define THREAD_CREATE_NEEDS_STACK (32*1024)
101 #ifdef I_MACH_CTHREADS
103 /* cthreads interface */
105 /* #include <mach/cthreads.h> is in perl.h #ifdef I_MACH_CTHREADS */
107 #define MUTEX_INIT(m) \
109 *m = mutex_alloc(); \
113 Perl_croak_nocontext("panic: MUTEX_INIT [%s:%d]", \
114 __FILE__, __LINE__); \
118 #define MUTEX_LOCK(m) mutex_lock(*m)
119 #define MUTEX_UNLOCK(m) mutex_unlock(*m)
120 #define MUTEX_DESTROY(m) \
126 #define COND_INIT(c) \
128 *c = condition_alloc(); \
130 condition_init(*c); \
133 Perl_croak_nocontext("panic: COND_INIT [%s:%d]", \
134 __FILE__, __LINE__); \
138 #define COND_SIGNAL(c) condition_signal(*c)
139 #define COND_BROADCAST(c) condition_broadcast(*c)
140 #define COND_WAIT(c, m) condition_wait(*c, *m)
141 #define COND_DESTROY(c) \
143 condition_free(*c); \
147 #define THREAD_CREATE(thr, f) (thr->self = cthread_fork(f, thr), 0)
148 #define THREAD_POST_CREATE(thr)
150 #define THREAD_RET_TYPE any_t
151 #define THREAD_RET_CAST(x) ((any_t) x)
153 #define DETACH(t) cthread_detach(t->self)
154 #define JOIN(t, avp) (*(avp) = (AV *)cthread_join(t->self))
156 #define PERL_SET_CONTEXT(t) cthread_set_data(cthread_self(), t)
157 #define PERL_GET_CONTEXT cthread_data(cthread_self())
159 #define INIT_THREADS cthread_init()
160 #define YIELD cthread_yield()
161 #define ALLOC_THREAD_KEY NOOP
162 #define FREE_THREAD_KEY NOOP
163 #define SET_THREAD_SELF(thr) (thr->self = cthread_self())
165 #endif /* I_MACH_CTHREADS */
169 # define YIELD SCHED_YIELD
171 # ifdef HAS_SCHED_YIELD
172 # define YIELD sched_yield()
174 # ifdef HAS_PTHREAD_YIELD
175 /* pthread_yield(NULL) platforms are expected
176 * to have #defined YIELD for themselves. */
177 # define YIELD pthread_yield()
184 # define MUTEX_INIT_NEEDS_MUTEX_ZEROED
189 # ifdef MUTEX_INIT_NEEDS_MUTEX_ZEROED
190 /* Temporary workaround, true bug is deeper. --jhi 1999-02-25 */
191 # define MUTEX_INIT(m) \
194 Zero((m), 1, perl_mutex); \
195 if ((_eC_ = pthread_mutex_init((m), pthread_mutexattr_default))) \
196 Perl_croak_nocontext("panic: MUTEX_INIT (%d) [%s:%d]", \
197 _eC_, __FILE__, __LINE__); \
200 # define MUTEX_INIT(m) \
203 if ((_eC_ = pthread_mutex_init((m), pthread_mutexattr_default))) \
204 Perl_croak_nocontext("panic: MUTEX_INIT (%d) [%s:%d]", \
205 _eC_, __FILE__, __LINE__); \
209 # define MUTEX_LOCK(m) \
212 if ((_eC_ = pthread_mutex_lock((m)))) \
213 Perl_croak_nocontext("panic: MUTEX_LOCK (%d) [%s:%d]", \
214 _eC_, __FILE__, __LINE__); \
217 # define MUTEX_UNLOCK(m) \
220 if ((_eC_ = pthread_mutex_unlock((m)))) \
221 Perl_croak_nocontext("panic: MUTEX_UNLOCK (%d) [%s:%d]", \
222 _eC_, __FILE__, __LINE__); \
225 # define MUTEX_DESTROY(m) \
228 if ((_eC_ = pthread_mutex_destroy((m)))) \
229 Perl_croak_nocontext("panic: MUTEX_DESTROY (%d) [%s:%d]", \
230 _eC_, __FILE__, __LINE__); \
232 #endif /* MUTEX_INIT */
235 # define COND_INIT(c) \
238 if ((_eC_ = pthread_cond_init((c), pthread_condattr_default))) \
239 Perl_croak_nocontext("panic: COND_INIT (%d) [%s:%d]", \
240 _eC_, __FILE__, __LINE__); \
243 # define COND_SIGNAL(c) \
246 if ((_eC_ = pthread_cond_signal((c)))) \
247 Perl_croak_nocontext("panic: COND_SIGNAL (%d) [%s:%d]", \
248 _eC_, __FILE__, __LINE__); \
251 # define COND_BROADCAST(c) \
254 if ((_eC_ = pthread_cond_broadcast((c)))) \
255 Perl_croak_nocontext("panic: COND_BROADCAST (%d) [%s:%d]", \
256 _eC_, __FILE__, __LINE__); \
259 # define COND_WAIT(c, m) \
262 if ((_eC_ = pthread_cond_wait((c), (m)))) \
263 Perl_croak_nocontext("panic: COND_WAIT (%d) [%s:%d]", \
264 _eC_, __FILE__, __LINE__); \
267 # define COND_DESTROY(c) \
270 if ((_eC_ = pthread_cond_destroy((c)))) \
271 Perl_croak_nocontext("panic: COND_DESTROY (%d) [%s:%d]", \
272 _eC_, __FILE__, __LINE__); \
274 #endif /* COND_INIT */
276 /* DETACH(t) must only be called while holding t->mutex */
281 if ((_eC_ = pthread_detach((t)->self))) { \
282 MUTEX_UNLOCK(&(t)->mutex); \
283 Perl_croak_nocontext("panic: DETACH (%d) [%s:%d]", \
284 _eC_, __FILE__, __LINE__); \
290 # define JOIN(t, avp) \
293 if ((_eC_ = pthread_join((t)->self, (void**)(avp)))) \
294 Perl_croak_nocontext("panic: pthread_join (%d) [%s:%d]", \
295 _eC_, __FILE__, __LINE__); \
299 /* Use an unchecked fetch of thread-specific data instead of a checked one.
300 * It would fail if the key were bogus, but if the key were bogus then
301 * Really Bad Things would be happening anyway. --dan */
302 #if (defined(__ALPHA) && (__VMS_VER >= 70000000)) || \
303 (defined(__alpha) && defined(__osf__) && !defined(__GNUC__)) /* Available only on >= 4.0 */
304 # define HAS_PTHREAD_UNCHECKED_GETSPECIFIC_NP /* Configure test needed */
307 #ifdef HAS_PTHREAD_UNCHECKED_GETSPECIFIC_NP
308 # define PTHREAD_GETSPECIFIC(key) pthread_unchecked_getspecific_np(key)
310 # define PTHREAD_GETSPECIFIC(key) pthread_getspecific(key)
313 #ifndef PERL_GET_CONTEXT
314 # define PERL_GET_CONTEXT PTHREAD_GETSPECIFIC(PL_thr_key)
317 #ifndef PERL_SET_CONTEXT
318 # define PERL_SET_CONTEXT(t) \
321 if ((_eC_ = pthread_setspecific(PL_thr_key, (void *)(t)))) \
322 Perl_croak_nocontext("panic: pthread_setspecific (%d) [%s:%d]", \
323 _eC_, __FILE__, __LINE__); \
325 #endif /* PERL_SET_CONTEXT */
328 # ifdef NEED_PTHREAD_INIT
329 # define INIT_THREADS pthread_init()
333 #ifndef ALLOC_THREAD_KEY
334 # define ALLOC_THREAD_KEY \
337 if ((_eC_ = pthread_key_create(&PL_thr_key, 0))) { \
338 write(2, "panic: pthread_key_create failed\n", 33); \
344 #ifndef FREE_THREAD_KEY
345 # define FREE_THREAD_KEY \
347 pthread_key_delete(PL_thr_key); \
351 #ifndef PTHREAD_ATFORK
352 # ifdef HAS_PTHREAD_ATFORK
353 # define PTHREAD_ATFORK(prepare,parent,child) \
354 pthread_atfork(prepare,parent,child)
356 # define PTHREAD_ATFORK(prepare,parent,child) \
361 #ifndef THREAD_RET_TYPE
362 # define THREAD_RET_TYPE void *
363 # define THREAD_RET_CAST(p) ((void *)(p))
364 #endif /* THREAD_RET */
366 #if defined(USE_5005THREADS)
368 /* Accessor for per-thread SVs */
369 # define THREADSV(i) (thr->threadsvp[i])
372 * LOCK_SV_MUTEX and UNLOCK_SV_MUTEX are performance-critical. Here, we
373 * try only locking them if there may be more than one thread in existence.
374 * Systems with very fast mutexes (and/or slow conditionals) may wish to
375 * remove the "if (threadnum) ..." test.
376 * XXX do NOT use C<if (PL_threadnum) ...> -- it sets up race conditions!
378 # define LOCK_SV_MUTEX MUTEX_LOCK(&PL_sv_mutex)
379 # define UNLOCK_SV_MUTEX MUTEX_UNLOCK(&PL_sv_mutex)
380 # define LOCK_STRTAB_MUTEX MUTEX_LOCK(&PL_strtab_mutex)
381 # define UNLOCK_STRTAB_MUTEX MUTEX_UNLOCK(&PL_strtab_mutex)
382 # define LOCK_CRED_MUTEX MUTEX_LOCK(&PL_cred_mutex)
383 # define UNLOCK_CRED_MUTEX MUTEX_UNLOCK(&PL_cred_mutex)
384 # define LOCK_FDPID_MUTEX MUTEX_LOCK(&PL_fdpid_mutex)
385 # define UNLOCK_FDPID_MUTEX MUTEX_UNLOCK(&PL_fdpid_mutex)
386 # define LOCK_SV_LOCK_MUTEX MUTEX_LOCK(&PL_sv_lock_mutex)
387 # define UNLOCK_SV_LOCK_MUTEX MUTEX_UNLOCK(&PL_sv_lock_mutex)
389 /* Values and macros for thr->flags */
390 #define THRf_STATE_MASK 7
391 #define THRf_R_JOINABLE 0
392 #define THRf_R_JOINED 1
393 #define THRf_R_DETACHED 2
394 #define THRf_ZOMBIE 3
397 #define THRf_DID_DIE 8
399 /* ThrSTATE(t) and ThrSETSTATE(t) must only be called while holding t->mutex */
400 #define ThrSTATE(t) ((t)->flags & THRf_STATE_MASK)
401 #define ThrSETSTATE(t, s) STMT_START { \
402 (t)->flags &= ~THRf_STATE_MASK; \
404 DEBUG_S(PerlIO_printf(Perl_debug_log, \
405 "thread %p set to state %d\n", (t), (s))); \
408 typedef struct condpair {
409 perl_mutex mutex; /* Protects all other fields */
410 perl_cond owner_cond; /* For when owner changes at all */
411 perl_cond cond; /* For cond_signal and cond_broadcast */
412 Thread owner; /* Currently owning thread */
415 #define MgMUTEXP(mg) (&((condpair_t *)(mg->mg_ptr))->mutex)
416 #define MgOWNERCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->owner_cond)
417 #define MgCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->cond)
418 #define MgOWNER(mg) ((condpair_t *)(mg->mg_ptr))->owner
420 #endif /* USE_5005THREADS */
422 # define LOCK_DOLLARZERO_MUTEX MUTEX_LOCK(&PL_dollarzero_mutex)
423 # define UNLOCK_DOLLARZERO_MUTEX MUTEX_UNLOCK(&PL_dollarzero_mutex)
425 #endif /* USE_5005THREADS || USE_ITHREADS */
428 # define MUTEX_LOCK(m)
432 # define MUTEX_UNLOCK(m)
436 # define MUTEX_INIT(m)
439 #ifndef MUTEX_DESTROY
440 # define MUTEX_DESTROY(m)
444 # define COND_INIT(c)
448 # define COND_SIGNAL(c)
451 #ifndef COND_BROADCAST
452 # define COND_BROADCAST(c)
456 # define COND_WAIT(c, m)
460 # define COND_DESTROY(c)
463 #ifndef LOCK_SV_MUTEX
464 # define LOCK_SV_MUTEX
467 #ifndef UNLOCK_SV_MUTEX
468 # define UNLOCK_SV_MUTEX
471 #ifndef LOCK_STRTAB_MUTEX
472 # define LOCK_STRTAB_MUTEX
475 #ifndef UNLOCK_STRTAB_MUTEX
476 # define UNLOCK_STRTAB_MUTEX
479 #ifndef LOCK_CRED_MUTEX
480 # define LOCK_CRED_MUTEX
483 #ifndef UNLOCK_CRED_MUTEX
484 # define UNLOCK_CRED_MUTEX
487 #ifndef LOCK_FDPID_MUTEX
488 # define LOCK_FDPID_MUTEX
491 #ifndef UNLOCK_FDPID_MUTEX
492 # define UNLOCK_FDPID_MUTEX
495 #ifndef LOCK_SV_LOCK_MUTEX
496 # define LOCK_SV_LOCK_MUTEX
499 #ifndef UNLOCK_SV_LOCK_MUTEX
500 # define UNLOCK_SV_LOCK_MUTEX
503 #ifndef LOCK_DOLLARZERO_MUTEX
504 # define LOCK_DOLLARZERO_MUTEX
507 #ifndef UNLOCK_DOLLARZERO_MUTEX
508 # define UNLOCK_DOLLARZERO_MUTEX
511 /* THR, SET_THR, and dTHR are there for compatibility with old versions */
513 # define THR PERL_GET_THX
517 # define SET_THR(t) PERL_SET_THX(t)
525 # define INIT_THREADS NOOP