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15794a95 | 1 | /* Threads compatibility routines for libgcc2 and libobjc. */ |
f24af81b | 2 | /* Compile this one with gcc. */ |
2a4e8ebc RO |
3 | /* Copyright (C) 1997, 1999, 2000, 2001, 2002, 2003 |
4 | Free Software Foundation, Inc. | |
f24af81b | 5 | |
1322177d | 6 | This file is part of GCC. |
f24af81b | 7 | |
1322177d LB |
8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
10 | Software Foundation; either version 2, or (at your option) any later | |
11 | version. | |
f24af81b | 12 | |
1322177d LB |
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
f24af81b TT |
17 | |
18 | You should have received a copy of the GNU General Public License | |
1322177d LB |
19 | along with GCC; see the file COPYING. If not, write to the Free |
20 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
21 | 02111-1307, USA. */ | |
f24af81b TT |
22 | |
23 | /* As a special exception, if you link this library with other files, | |
24 | some of which are compiled with GCC, to produce an executable, | |
25 | this library does not by itself cause the resulting executable | |
26 | to be covered by the GNU General Public License. | |
27 | This exception does not however invalidate any other reasons why | |
28 | the executable file might be covered by the GNU General Public License. */ | |
29 | ||
88657302 RH |
30 | #ifndef GCC_GTHR_POSIX_H |
31 | #define GCC_GTHR_POSIX_H | |
f24af81b TT |
32 | |
33 | /* POSIX threads specific definitions. | |
71287280 | 34 | Easy, since the interface is just one-to-one mapping. */ |
f24af81b TT |
35 | |
36 | #define __GTHREADS 1 | |
37 | ||
2a4e8ebc RO |
38 | /* Some implementations of <pthread.h> require this to be defined. */ |
39 | #ifndef _REENTRANT | |
40 | #define _REENTRANT 1 | |
41 | #endif | |
42 | ||
f24af81b | 43 | #include <pthread.h> |
c95d07f8 | 44 | #include <unistd.h> |
f24af81b TT |
45 | |
46 | typedef pthread_key_t __gthread_key_t; | |
47 | typedef pthread_once_t __gthread_once_t; | |
48 | typedef pthread_mutex_t __gthread_mutex_t; | |
40aac948 | 49 | typedef pthread_mutex_t __gthread_recursive_mutex_t; |
f24af81b TT |
50 | |
51 | #define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER | |
52 | #define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT | |
40aac948 JM |
53 | #if defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER) |
54 | #define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER | |
55 | #elif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP) | |
56 | #define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP | |
57 | #else | |
58 | #define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function | |
59 | #endif | |
f24af81b TT |
60 | |
61 | #if SUPPORTS_WEAK && GTHREAD_USE_WEAK | |
62 | ||
15794a95 L |
63 | #pragma weak pthread_once |
64 | #pragma weak pthread_key_create | |
65 | #pragma weak pthread_key_delete | |
66 | #pragma weak pthread_getspecific | |
67 | #pragma weak pthread_setspecific | |
68 | #pragma weak pthread_create | |
36244024 | 69 | |
589005ff KH |
70 | #pragma weak pthread_mutex_lock |
71 | #pragma weak pthread_mutex_trylock | |
72 | #pragma weak pthread_mutex_unlock | |
70008293 JM |
73 | #pragma weak pthread_mutexattr_init |
74 | #pragma weak pthread_mutexattr_settype | |
75 | #pragma weak pthread_mutexattr_destroy | |
76 | ||
77 | #pragma weak pthread_mutex_init | |
15794a95 | 78 | |
2a4e8ebc | 79 | #if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK) |
40f03658 | 80 | /* Objective-C. */ |
15794a95 L |
81 | #pragma weak pthread_cond_broadcast |
82 | #pragma weak pthread_cond_destroy | |
83 | #pragma weak pthread_cond_init | |
84 | #pragma weak pthread_cond_signal | |
85 | #pragma weak pthread_cond_wait | |
86 | #pragma weak pthread_exit | |
15794a95 L |
87 | #pragma weak pthread_mutex_destroy |
88 | #pragma weak pthread_self | |
45863ba3 | 89 | #ifdef _POSIX_PRIORITY_SCHEDULING |
c95d07f8 | 90 | #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING |
f4b20cd9 RO |
91 | #pragma weak sched_get_priority_max |
92 | #pragma weak sched_get_priority_min | |
c95d07f8 | 93 | #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ |
45863ba3 | 94 | #endif /* _POSIX_PRIORITY_SCHEDULING */ |
15794a95 | 95 | #pragma weak sched_yield |
6f9b26b0 LR |
96 | #pragma weak pthread_attr_destroy |
97 | #pragma weak pthread_attr_init | |
98 | #pragma weak pthread_attr_setdetachstate | |
c95d07f8 | 99 | #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING |
6f9b26b0 LR |
100 | #pragma weak pthread_getschedparam |
101 | #pragma weak pthread_setschedparam | |
c95d07f8 | 102 | #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ |
2a4e8ebc | 103 | #endif /* _LIBOBJC || _LIBOBJC_WEAK */ |
f24af81b | 104 | |
f24af81b | 105 | static inline int |
d1e51320 | 106 | __gthread_active_p (void) |
f24af81b | 107 | { |
7a8de19b | 108 | static void *const __gthread_active_ptr = (void *) &pthread_create; |
f24af81b TT |
109 | return __gthread_active_ptr != 0; |
110 | } | |
111 | ||
112 | #else /* not SUPPORTS_WEAK */ | |
113 | ||
114 | static inline int | |
d1e51320 | 115 | __gthread_active_p (void) |
f24af81b TT |
116 | { |
117 | return 1; | |
118 | } | |
119 | ||
120 | #endif /* SUPPORTS_WEAK */ | |
121 | ||
15794a95 L |
122 | #ifdef _LIBOBJC |
123 | ||
5f974826 OP |
124 | /* This is the config.h file in libobjc/ */ |
125 | #include <config.h> | |
126 | ||
127 | #ifdef HAVE_SCHED_H | |
128 | # include <sched.h> | |
129 | #endif | |
130 | ||
15794a95 L |
131 | /* Key structure for maintaining thread specific storage */ |
132 | static pthread_key_t _objc_thread_storage; | |
447c11a5 | 133 | static pthread_attr_t _objc_thread_attribs; |
15794a95 L |
134 | |
135 | /* Thread local storage for a single thread */ | |
136 | static void *thread_local_storage = NULL; | |
137 | ||
138 | /* Backend initialization functions */ | |
139 | ||
71287280 | 140 | /* Initialize the threads subsystem. */ |
15794a95 | 141 | static inline int |
fe83a9ce | 142 | __gthread_objc_init_thread_system (void) |
15794a95 L |
143 | { |
144 | if (__gthread_active_p ()) | |
447c11a5 OP |
145 | { |
146 | /* Initialize the thread storage key */ | |
fe83a9ce | 147 | if (pthread_key_create (&_objc_thread_storage, NULL) == 0) |
589005ff KH |
148 | { |
149 | /* The normal default detach state for threads is | |
150 | * PTHREAD_CREATE_JOINABLE which causes threads to not die | |
151 | * when you think they should. */ | |
fe83a9ce KH |
152 | if (pthread_attr_init (&_objc_thread_attribs) == 0 |
153 | && pthread_attr_setdetachstate (&_objc_thread_attribs, | |
154 | PTHREAD_CREATE_DETACHED) == 0) | |
589005ff KH |
155 | return 0; |
156 | } | |
447c11a5 | 157 | } |
abc0360c NP |
158 | |
159 | return -1; | |
15794a95 L |
160 | } |
161 | ||
71287280 | 162 | /* Close the threads subsystem. */ |
15794a95 | 163 | static inline int |
fe83a9ce | 164 | __gthread_objc_close_thread_system (void) |
15794a95 | 165 | { |
447c11a5 | 166 | if (__gthread_active_p () |
fe83a9ce KH |
167 | && pthread_key_delete (_objc_thread_storage) == 0 |
168 | && pthread_attr_destroy (&_objc_thread_attribs) == 0) | |
15794a95 | 169 | return 0; |
447c11a5 OP |
170 | |
171 | return -1; | |
15794a95 L |
172 | } |
173 | ||
174 | /* Backend thread functions */ | |
175 | ||
71287280 | 176 | /* Create a new thread of execution. */ |
15794a95 | 177 | static inline objc_thread_t |
fe83a9ce | 178 | __gthread_objc_thread_detach (void (*func)(void *), void *arg) |
15794a95 L |
179 | { |
180 | objc_thread_t thread_id; | |
181 | pthread_t new_thread_handle; | |
182 | ||
183 | if (!__gthread_active_p ()) | |
184 | return NULL; | |
589005ff | 185 | |
fe83a9ce | 186 | if (!(pthread_create (&new_thread_handle, NULL, (void *) func, arg))) |
fee013ef | 187 | thread_id = (objc_thread_t) new_thread_handle; |
15794a95 L |
188 | else |
189 | thread_id = NULL; | |
589005ff | 190 | |
15794a95 L |
191 | return thread_id; |
192 | } | |
193 | ||
71287280 | 194 | /* Set the current thread's priority. */ |
15794a95 | 195 | static inline int |
fe83a9ce | 196 | __gthread_objc_thread_set_priority (int priority) |
15794a95 | 197 | { |
fe83a9ce | 198 | if (!__gthread_active_p ()) |
447c11a5 | 199 | return -1; |
fe83a9ce KH |
200 | else |
201 | { | |
45863ba3 | 202 | #ifdef _POSIX_PRIORITY_SCHEDULING |
c95d07f8 | 203 | #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING |
fe83a9ce KH |
204 | pthread_t thread_id = pthread_self (); |
205 | int policy; | |
206 | struct sched_param params; | |
207 | int priority_min, priority_max; | |
589005ff | 208 | |
fe83a9ce KH |
209 | if (pthread_getschedparam (thread_id, &policy, ¶ms) == 0) |
210 | { | |
211 | if ((priority_max = sched_get_priority_max (policy)) == -1) | |
212 | return -1; | |
213 | ||
214 | if ((priority_min = sched_get_priority_min (policy)) == -1) | |
215 | return -1; | |
589005ff | 216 | |
fe83a9ce KH |
217 | if (priority > priority_max) |
218 | priority = priority_max; | |
219 | else if (priority < priority_min) | |
220 | priority = priority_min; | |
221 | params.sched_priority = priority; | |
222 | ||
223 | /* | |
224 | * The solaris 7 and several other man pages incorrectly state that | |
225 | * this should be a pointer to policy but pthread.h is universally | |
226 | * at odds with this. | |
227 | */ | |
228 | if (pthread_setschedparam (thread_id, policy, ¶ms) == 0) | |
229 | return 0; | |
230 | } | |
c95d07f8 | 231 | #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ |
45863ba3 | 232 | #endif /* _POSIX_PRIORITY_SCHEDULING */ |
fe83a9ce KH |
233 | return -1; |
234 | } | |
15794a95 L |
235 | } |
236 | ||
71287280 | 237 | /* Return the current thread's priority. */ |
15794a95 | 238 | static inline int |
fe83a9ce | 239 | __gthread_objc_thread_get_priority (void) |
15794a95 | 240 | { |
45863ba3 | 241 | #ifdef _POSIX_PRIORITY_SCHEDULING |
c95d07f8 | 242 | #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING |
15794a95 | 243 | if (__gthread_active_p ()) |
447c11a5 OP |
244 | { |
245 | int policy; | |
246 | struct sched_param params; | |
247 | ||
fe83a9ce | 248 | if (pthread_getschedparam (pthread_self (), &policy, ¶ms) == 0) |
589005ff | 249 | return params.sched_priority; |
447c11a5 | 250 | else |
589005ff | 251 | return -1; |
447c11a5 | 252 | } |
15794a95 | 253 | else |
c95d07f8 | 254 | #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ |
45863ba3 | 255 | #endif /* _POSIX_PRIORITY_SCHEDULING */ |
15794a95 L |
256 | return OBJC_THREAD_INTERACTIVE_PRIORITY; |
257 | } | |
258 | ||
71287280 | 259 | /* Yield our process time to another thread. */ |
15794a95 | 260 | static inline void |
fe83a9ce | 261 | __gthread_objc_thread_yield (void) |
15794a95 L |
262 | { |
263 | if (__gthread_active_p ()) | |
fe83a9ce | 264 | sched_yield (); |
15794a95 L |
265 | } |
266 | ||
71287280 | 267 | /* Terminate the current thread. */ |
15794a95 | 268 | static inline int |
fe83a9ce | 269 | __gthread_objc_thread_exit (void) |
15794a95 L |
270 | { |
271 | if (__gthread_active_p ()) | |
272 | /* exit the thread */ | |
fe83a9ce | 273 | pthread_exit (&__objc_thread_exit_status); |
15794a95 L |
274 | |
275 | /* Failed if we reached here */ | |
276 | return -1; | |
277 | } | |
278 | ||
71287280 | 279 | /* Returns an integer value which uniquely describes a thread. */ |
15794a95 | 280 | static inline objc_thread_t |
fe83a9ce | 281 | __gthread_objc_thread_id (void) |
15794a95 L |
282 | { |
283 | if (__gthread_active_p ()) | |
fe83a9ce | 284 | return (objc_thread_t) pthread_self (); |
15794a95 | 285 | else |
fee013ef | 286 | return (objc_thread_t) 1; |
15794a95 L |
287 | } |
288 | ||
71287280 | 289 | /* Sets the thread's local storage pointer. */ |
15794a95 | 290 | static inline int |
fe83a9ce | 291 | __gthread_objc_thread_set_data (void *value) |
15794a95 L |
292 | { |
293 | if (__gthread_active_p ()) | |
fe83a9ce | 294 | return pthread_setspecific (_objc_thread_storage, value); |
15794a95 L |
295 | else |
296 | { | |
297 | thread_local_storage = value; | |
298 | return 0; | |
299 | } | |
300 | } | |
301 | ||
71287280 | 302 | /* Returns the thread's local storage pointer. */ |
15794a95 | 303 | static inline void * |
fe83a9ce | 304 | __gthread_objc_thread_get_data (void) |
15794a95 L |
305 | { |
306 | if (__gthread_active_p ()) | |
fe83a9ce | 307 | return pthread_getspecific (_objc_thread_storage); |
15794a95 L |
308 | else |
309 | return thread_local_storage; | |
310 | } | |
311 | ||
312 | /* Backend mutex functions */ | |
313 | ||
71287280 | 314 | /* Allocate a mutex. */ |
15794a95 | 315 | static inline int |
fe83a9ce | 316 | __gthread_objc_mutex_allocate (objc_mutex_t mutex) |
15794a95 L |
317 | { |
318 | if (__gthread_active_p ()) | |
319 | { | |
fe83a9ce | 320 | mutex->backend = objc_malloc (sizeof (pthread_mutex_t)); |
15794a95 | 321 | |
fe83a9ce | 322 | if (pthread_mutex_init ((pthread_mutex_t *) mutex->backend, NULL)) |
15794a95 | 323 | { |
fe83a9ce | 324 | objc_free (mutex->backend); |
15794a95 L |
325 | mutex->backend = NULL; |
326 | return -1; | |
327 | } | |
328 | } | |
329 | ||
330 | return 0; | |
331 | } | |
332 | ||
71287280 | 333 | /* Deallocate a mutex. */ |
15794a95 | 334 | static inline int |
fe83a9ce | 335 | __gthread_objc_mutex_deallocate (objc_mutex_t mutex) |
15794a95 L |
336 | { |
337 | if (__gthread_active_p ()) | |
338 | { | |
339 | int count; | |
340 | ||
341 | /* | |
342 | * Posix Threads specifically require that the thread be unlocked | |
343 | * for pthread_mutex_destroy to work. | |
344 | */ | |
345 | ||
346 | do | |
347 | { | |
fe83a9ce | 348 | count = pthread_mutex_unlock ((pthread_mutex_t *) mutex->backend); |
15794a95 L |
349 | if (count < 0) |
350 | return -1; | |
351 | } | |
352 | while (count); | |
353 | ||
fe83a9ce | 354 | if (pthread_mutex_destroy ((pthread_mutex_t *) mutex->backend)) |
15794a95 L |
355 | return -1; |
356 | ||
fe83a9ce | 357 | objc_free (mutex->backend); |
15794a95 L |
358 | mutex->backend = NULL; |
359 | } | |
360 | return 0; | |
361 | } | |
362 | ||
71287280 | 363 | /* Grab a lock on a mutex. */ |
15794a95 | 364 | static inline int |
fe83a9ce | 365 | __gthread_objc_mutex_lock (objc_mutex_t mutex) |
15794a95 | 366 | { |
589005ff | 367 | if (__gthread_active_p () |
fe83a9ce | 368 | && pthread_mutex_lock ((pthread_mutex_t *) mutex->backend) != 0) |
054af139 NP |
369 | { |
370 | return -1; | |
371 | } | |
372 | ||
373 | return 0; | |
15794a95 L |
374 | } |
375 | ||
71287280 | 376 | /* Try to grab a lock on a mutex. */ |
15794a95 | 377 | static inline int |
fe83a9ce | 378 | __gthread_objc_mutex_trylock (objc_mutex_t mutex) |
15794a95 | 379 | { |
589005ff | 380 | if (__gthread_active_p () |
fe83a9ce | 381 | && pthread_mutex_trylock ((pthread_mutex_t *) mutex->backend) != 0) |
054af139 NP |
382 | { |
383 | return -1; | |
384 | } | |
385 | ||
386 | return 0; | |
15794a95 L |
387 | } |
388 | ||
389 | /* Unlock the mutex */ | |
390 | static inline int | |
fe83a9ce | 391 | __gthread_objc_mutex_unlock (objc_mutex_t mutex) |
15794a95 | 392 | { |
589005ff | 393 | if (__gthread_active_p () |
fe83a9ce | 394 | && pthread_mutex_unlock ((pthread_mutex_t *) mutex->backend) != 0) |
054af139 NP |
395 | { |
396 | return -1; | |
397 | } | |
398 | ||
399 | return 0; | |
15794a95 L |
400 | } |
401 | ||
402 | /* Backend condition mutex functions */ | |
403 | ||
71287280 | 404 | /* Allocate a condition. */ |
15794a95 | 405 | static inline int |
fe83a9ce | 406 | __gthread_objc_condition_allocate (objc_condition_t condition) |
15794a95 L |
407 | { |
408 | if (__gthread_active_p ()) | |
409 | { | |
fe83a9ce | 410 | condition->backend = objc_malloc (sizeof (pthread_cond_t)); |
15794a95 | 411 | |
fe83a9ce | 412 | if (pthread_cond_init ((pthread_cond_t *) condition->backend, NULL)) |
15794a95 | 413 | { |
fe83a9ce | 414 | objc_free (condition->backend); |
15794a95 L |
415 | condition->backend = NULL; |
416 | return -1; | |
417 | } | |
418 | } | |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
71287280 | 423 | /* Deallocate a condition. */ |
15794a95 | 424 | static inline int |
fe83a9ce | 425 | __gthread_objc_condition_deallocate (objc_condition_t condition) |
15794a95 L |
426 | { |
427 | if (__gthread_active_p ()) | |
428 | { | |
fe83a9ce | 429 | if (pthread_cond_destroy ((pthread_cond_t *) condition->backend)) |
15794a95 L |
430 | return -1; |
431 | ||
fe83a9ce | 432 | objc_free (condition->backend); |
15794a95 L |
433 | condition->backend = NULL; |
434 | } | |
435 | return 0; | |
436 | } | |
437 | ||
438 | /* Wait on the condition */ | |
439 | static inline int | |
fe83a9ce | 440 | __gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex) |
15794a95 L |
441 | { |
442 | if (__gthread_active_p ()) | |
fe83a9ce KH |
443 | return pthread_cond_wait ((pthread_cond_t *) condition->backend, |
444 | (pthread_mutex_t *) mutex->backend); | |
15794a95 L |
445 | else |
446 | return 0; | |
447 | } | |
448 | ||
71287280 | 449 | /* Wake up all threads waiting on this condition. */ |
15794a95 | 450 | static inline int |
fe83a9ce | 451 | __gthread_objc_condition_broadcast (objc_condition_t condition) |
15794a95 L |
452 | { |
453 | if (__gthread_active_p ()) | |
fe83a9ce | 454 | return pthread_cond_broadcast ((pthread_cond_t *) condition->backend); |
15794a95 L |
455 | else |
456 | return 0; | |
457 | } | |
458 | ||
71287280 | 459 | /* Wake up one thread waiting on this condition. */ |
15794a95 | 460 | static inline int |
fe83a9ce | 461 | __gthread_objc_condition_signal (objc_condition_t condition) |
15794a95 L |
462 | { |
463 | if (__gthread_active_p ()) | |
fe83a9ce | 464 | return pthread_cond_signal ((pthread_cond_t *) condition->backend); |
15794a95 L |
465 | else |
466 | return 0; | |
467 | } | |
468 | ||
469 | #else /* _LIBOBJC */ | |
470 | ||
f24af81b | 471 | static inline int |
d1e51320 | 472 | __gthread_once (__gthread_once_t *once, void (*func) (void)) |
f24af81b TT |
473 | { |
474 | if (__gthread_active_p ()) | |
475 | return pthread_once (once, func); | |
476 | else | |
477 | return -1; | |
478 | } | |
479 | ||
480 | static inline int | |
481 | __gthread_key_create (__gthread_key_t *key, void (*dtor) (void *)) | |
482 | { | |
483 | return pthread_key_create (key, dtor); | |
484 | } | |
485 | ||
f24af81b TT |
486 | static inline int |
487 | __gthread_key_delete (__gthread_key_t key) | |
488 | { | |
489 | return pthread_key_delete (key); | |
490 | } | |
491 | ||
492 | static inline void * | |
493 | __gthread_getspecific (__gthread_key_t key) | |
494 | { | |
495 | return pthread_getspecific (key); | |
496 | } | |
497 | ||
498 | static inline int | |
499 | __gthread_setspecific (__gthread_key_t key, const void *ptr) | |
500 | { | |
501 | return pthread_setspecific (key, ptr); | |
502 | } | |
503 | ||
504 | static inline int | |
505 | __gthread_mutex_lock (__gthread_mutex_t *mutex) | |
506 | { | |
507 | if (__gthread_active_p ()) | |
508 | return pthread_mutex_lock (mutex); | |
509 | else | |
510 | return 0; | |
511 | } | |
512 | ||
513 | static inline int | |
514 | __gthread_mutex_trylock (__gthread_mutex_t *mutex) | |
515 | { | |
516 | if (__gthread_active_p ()) | |
517 | return pthread_mutex_trylock (mutex); | |
518 | else | |
519 | return 0; | |
520 | } | |
521 | ||
522 | static inline int | |
523 | __gthread_mutex_unlock (__gthread_mutex_t *mutex) | |
524 | { | |
525 | if (__gthread_active_p ()) | |
526 | return pthread_mutex_unlock (mutex); | |
527 | else | |
528 | return 0; | |
529 | } | |
530 | ||
40aac948 JM |
531 | #ifndef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP |
532 | static inline int | |
533 | __gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex) | |
534 | { | |
535 | if (__gthread_active_p ()) | |
536 | { | |
537 | pthread_mutexattr_t attr; | |
538 | int r; | |
539 | ||
540 | r = pthread_mutexattr_init (&attr); | |
541 | if (!r) | |
542 | r = pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE); | |
543 | if (!r) | |
544 | r = pthread_mutex_init (mutex, &attr); | |
545 | if (!r) | |
546 | r = pthread_mutexattr_destroy (&attr); | |
547 | return r; | |
548 | } | |
549 | } | |
550 | #endif | |
551 | ||
552 | static inline int | |
553 | __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex) | |
554 | { | |
555 | return __gthread_mutex_lock (mutex); | |
556 | } | |
557 | ||
558 | static inline int | |
559 | __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex) | |
560 | { | |
561 | return __gthread_mutex_trylock (mutex); | |
562 | } | |
563 | ||
564 | static inline int | |
565 | __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex) | |
566 | { | |
567 | return __gthread_mutex_unlock (mutex); | |
568 | } | |
569 | ||
15794a95 L |
570 | #endif /* _LIBOBJC */ |
571 | ||
88657302 | 572 | #endif /* ! GCC_GTHR_POSIX_H */ |