libstdc++
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00001 /* Threads compatibility routines for libgcc2 and libobjc. */ 00002 /* Compile this one with gcc. */ 00003 /* Copyright (C) 1997, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 00004 2008, 2009 Free Software Foundation, Inc. 00005 00006 This file is part of GCC. 00007 00008 GCC is free software; you can redistribute it and/or modify it under 00009 the terms of the GNU General Public License as published by the Free 00010 Software Foundation; either version 3, or (at your option) any later 00011 version. 00012 00013 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 00014 WARRANTY; without even the implied warranty of MERCHANTABILITY or 00015 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 00016 for more details. 00017 00018 Under Section 7 of GPL version 3, you are granted additional 00019 permissions described in the GCC Runtime Library Exception, version 00020 3.1, as published by the Free Software Foundation. 00021 00022 You should have received a copy of the GNU General Public License and 00023 a copy of the GCC Runtime Library Exception along with this program; 00024 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 00025 <http://www.gnu.org/licenses/>. */ 00026 00027 #ifndef _GLIBCXX_GCC_GTHR_POSIX_H 00028 #define _GLIBCXX_GCC_GTHR_POSIX_H 00029 00030 /* POSIX threads specific definitions. 00031 Easy, since the interface is just one-to-one mapping. */ 00032 00033 #define __GTHREADS 1 00034 #define __GTHREADS_CXX0X 1 00035 00036 /* Some implementations of <pthread.h> require this to be defined. */ 00037 #if !defined(_REENTRANT) && defined(__osf__) 00038 #define _REENTRANT 1 00039 #endif 00040 00041 #include <pthread.h> 00042 #include <unistd.h> 00043 00044 typedef pthread_t __gthread_t; 00045 typedef pthread_key_t __gthread_key_t; 00046 typedef pthread_once_t __gthread_once_t; 00047 typedef pthread_mutex_t __gthread_mutex_t; 00048 typedef pthread_mutex_t __gthread_recursive_mutex_t; 00049 typedef pthread_cond_t __gthread_cond_t; 00050 typedef struct timespec __gthread_time_t; 00051 00052 /* POSIX like conditional variables are supported. Please look at comments 00053 in gthr.h for details. */ 00054 #define __GTHREAD_HAS_COND 1 00055 00056 #define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER 00057 #define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT 00058 #if defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER) 00059 #define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER 00060 #elif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP) 00061 #define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP 00062 #else 00063 #define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function 00064 #endif 00065 #define __GTHREAD_COND_INIT PTHREAD_COND_INITIALIZER 00066 #define __GTHREAD_TIME_INIT {0,0} 00067 00068 #if __GXX_WEAK__ && _GLIBCXX_GTHREAD_USE_WEAK 00069 # ifndef __gthrw_pragma 00070 # define __gthrw_pragma(pragma) 00071 # endif 00072 # define __gthrw2(name,name2,type) \ 00073 static __typeof(type) name __attribute__ ((__weakref__(#name2))); \ 00074 __gthrw_pragma(weak type) 00075 # define __gthrw_(name) __gthrw_ ## name 00076 #else 00077 # define __gthrw2(name,name2,type) 00078 # define __gthrw_(name) name 00079 #endif 00080 00081 /* Typically, __gthrw_foo is a weak reference to symbol foo. */ 00082 #define __gthrw(name) __gthrw2(__gthrw_ ## name,name,name) 00083 00084 /* On Tru64, /usr/include/pthread.h uses #pragma extern_prefix "__" to 00085 map a subset of the POSIX pthread API to mangled versions of their 00086 names. */ 00087 #if defined(__osf__) && defined(_PTHREAD_USE_MANGLED_NAMES_) 00088 #define __gthrw3(name) __gthrw2(__gthrw_ ## name, __ ## name, name) 00089 __gthrw3(pthread_once) 00090 __gthrw3(pthread_getspecific) 00091 __gthrw3(pthread_setspecific) 00092 00093 __gthrw3(pthread_create) 00094 __gthrw3(pthread_join) 00095 __gthrw3(pthread_detach) 00096 __gthrw3(pthread_equal) 00097 __gthrw3(pthread_self) 00098 __gthrw3(pthread_cancel) 00099 __gthrw3(sched_yield) 00100 00101 __gthrw3(pthread_mutex_lock) 00102 __gthrw3(pthread_mutex_trylock) 00103 #ifdef _POSIX_TIMEOUTS 00104 #if _POSIX_TIMEOUTS >= 0 00105 __gthrw3(pthread_mutex_timedlock) 00106 #endif 00107 #endif /* _POSIX_TIMEOUTS */ 00108 __gthrw3(pthread_mutex_unlock) 00109 __gthrw3(pthread_mutex_init) 00110 __gthrw3(pthread_mutex_destroy) 00111 00112 __gthrw3(pthread_cond_broadcast) 00113 __gthrw3(pthread_cond_signal) 00114 __gthrw3(pthread_cond_wait) 00115 __gthrw3(pthread_cond_timedwait) 00116 __gthrw3(pthread_cond_destroy) 00117 #else 00118 __gthrw(pthread_once) 00119 __gthrw(pthread_getspecific) 00120 __gthrw(pthread_setspecific) 00121 00122 __gthrw(pthread_create) 00123 __gthrw(pthread_join) 00124 __gthrw(pthread_equal) 00125 __gthrw(pthread_self) 00126 __gthrw(pthread_detach) 00127 __gthrw(pthread_cancel) 00128 __gthrw(sched_yield) 00129 00130 __gthrw(pthread_mutex_lock) 00131 __gthrw(pthread_mutex_trylock) 00132 #ifdef _POSIX_TIMEOUTS 00133 #if _POSIX_TIMEOUTS >= 0 00134 __gthrw(pthread_mutex_timedlock) 00135 #endif 00136 #endif /* _POSIX_TIMEOUTS */ 00137 __gthrw(pthread_mutex_unlock) 00138 __gthrw(pthread_mutex_init) 00139 __gthrw(pthread_mutex_destroy) 00140 00141 __gthrw(pthread_cond_broadcast) 00142 __gthrw(pthread_cond_signal) 00143 __gthrw(pthread_cond_wait) 00144 __gthrw(pthread_cond_timedwait) 00145 __gthrw(pthread_cond_destroy) 00146 #endif 00147 00148 __gthrw(pthread_key_create) 00149 __gthrw(pthread_key_delete) 00150 __gthrw(pthread_mutexattr_init) 00151 __gthrw(pthread_mutexattr_settype) 00152 __gthrw(pthread_mutexattr_destroy) 00153 00154 00155 #if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK) 00156 /* Objective-C. */ 00157 #if defined(__osf__) && defined(_PTHREAD_USE_MANGLED_NAMES_) 00158 __gthrw3(pthread_cond_init) 00159 __gthrw3(pthread_exit) 00160 #else 00161 __gthrw(pthread_cond_init) 00162 __gthrw(pthread_exit) 00163 #endif /* __osf__ && _PTHREAD_USE_MANGLED_NAMES_ */ 00164 #ifdef _POSIX_PRIORITY_SCHEDULING 00165 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING 00166 __gthrw(sched_get_priority_max) 00167 __gthrw(sched_get_priority_min) 00168 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ 00169 #endif /* _POSIX_PRIORITY_SCHEDULING */ 00170 __gthrw(pthread_attr_destroy) 00171 __gthrw(pthread_attr_init) 00172 __gthrw(pthread_attr_setdetachstate) 00173 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING 00174 __gthrw(pthread_getschedparam) 00175 __gthrw(pthread_setschedparam) 00176 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ 00177 #endif /* _LIBOBJC || _LIBOBJC_WEAK */ 00178 00179 #if __GXX_WEAK__ && _GLIBCXX_GTHREAD_USE_WEAK 00180 00181 /* On Solaris 2.6 up to 9, the libc exposes a POSIX threads interface even if 00182 -pthreads is not specified. The functions are dummies and most return an 00183 error value. However pthread_once returns 0 without invoking the routine 00184 it is passed so we cannot pretend that the interface is active if -pthreads 00185 is not specified. On Solaris 2.5.1, the interface is not exposed at all so 00186 we need to play the usual game with weak symbols. On Solaris 10 and up, a 00187 working interface is always exposed. On FreeBSD 6 and later, libc also 00188 exposes a dummy POSIX threads interface, similar to what Solaris 2.6 up 00189 to 9 does. FreeBSD >= 700014 even provides a pthread_cancel stub in libc, 00190 which means the alternate __gthread_active_p below cannot be used there. */ 00191 00192 #if defined(__FreeBSD__) || (defined(__sun) && defined(__svr4__)) 00193 00194 static volatile int __gthread_active = -1; 00195 00196 static void 00197 __gthread_trigger (void) 00198 { 00199 __gthread_active = 1; 00200 } 00201 00202 static inline int 00203 __gthread_active_p (void) 00204 { 00205 static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER; 00206 static pthread_once_t __gthread_active_once = PTHREAD_ONCE_INIT; 00207 00208 /* Avoid reading __gthread_active twice on the main code path. */ 00209 int __gthread_active_latest_value = __gthread_active; 00210 00211 /* This test is not protected to avoid taking a lock on the main code 00212 path so every update of __gthread_active in a threaded program must 00213 be atomic with regard to the result of the test. */ 00214 if (__builtin_expect (__gthread_active_latest_value < 0, 0)) 00215 { 00216 if (__gthrw_(pthread_once)) 00217 { 00218 /* If this really is a threaded program, then we must ensure that 00219 __gthread_active has been set to 1 before exiting this block. */ 00220 __gthrw_(pthread_mutex_lock) (&__gthread_active_mutex); 00221 __gthrw_(pthread_once) (&__gthread_active_once, __gthread_trigger); 00222 __gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex); 00223 } 00224 00225 /* Make sure we'll never enter this block again. */ 00226 if (__gthread_active < 0) 00227 __gthread_active = 0; 00228 00229 __gthread_active_latest_value = __gthread_active; 00230 } 00231 00232 return __gthread_active_latest_value != 0; 00233 } 00234 00235 #else /* neither FreeBSD nor Solaris */ 00236 00237 static inline int 00238 __gthread_active_p (void) 00239 { 00240 static void *const __gthread_active_ptr 00241 = __extension__ (void *) &__gthrw_(pthread_cancel); 00242 return __gthread_active_ptr != 0; 00243 } 00244 00245 #endif /* FreeBSD or Solaris */ 00246 00247 #else /* not __GXX_WEAK__ */ 00248 00249 /* Similar to Solaris, HP-UX 11 for PA-RISC provides stubs for pthread 00250 calls in shared flavors of the HP-UX C library. Most of the stubs 00251 have no functionality. The details are described in the "libc cumulative 00252 patch" for each subversion of HP-UX 11. There are two special interfaces 00253 provided for checking whether an application is linked to a shared pthread 00254 library or not. However, these interfaces aren't available in early 00255 libpthread libraries. We also need a test that works for archive 00256 libraries. We can't use pthread_once as some libc versions call the 00257 init function. We also can't use pthread_create or pthread_attr_init 00258 as these create a thread and thereby prevent changing the default stack 00259 size. The function pthread_default_stacksize_np is available in both 00260 the archive and shared versions of libpthread. It can be used to 00261 determine the default pthread stack size. There is a stub in some 00262 shared libc versions which returns a zero size if pthreads are not 00263 active. We provide an equivalent stub to handle cases where libc 00264 doesn't provide one. */ 00265 00266 #if defined(__hppa__) && defined(__hpux__) 00267 00268 static volatile int __gthread_active = -1; 00269 00270 static inline int 00271 __gthread_active_p (void) 00272 { 00273 /* Avoid reading __gthread_active twice on the main code path. */ 00274 int __gthread_active_latest_value = __gthread_active; 00275 size_t __s; 00276 00277 if (__builtin_expect (__gthread_active_latest_value < 0, 0)) 00278 { 00279 pthread_default_stacksize_np (0, &__s); 00280 __gthread_active = __s ? 1 : 0; 00281 __gthread_active_latest_value = __gthread_active; 00282 } 00283 00284 return __gthread_active_latest_value != 0; 00285 } 00286 00287 #else /* not hppa-hpux */ 00288 00289 static inline int 00290 __gthread_active_p (void) 00291 { 00292 return 1; 00293 } 00294 00295 #endif /* hppa-hpux */ 00296 00297 #endif /* __GXX_WEAK__ */ 00298 00299 #ifdef _LIBOBJC 00300 00301 /* This is the config.h file in libobjc/ */ 00302 #include <config.h> 00303 00304 #ifdef HAVE_SCHED_H 00305 # include <sched.h> 00306 #endif 00307 00308 /* Key structure for maintaining thread specific storage */ 00309 static pthread_key_t _objc_thread_storage; 00310 static pthread_attr_t _objc_thread_attribs; 00311 00312 /* Thread local storage for a single thread */ 00313 static void *thread_local_storage = NULL; 00314 00315 /* Backend initialization functions */ 00316 00317 /* Initialize the threads subsystem. */ 00318 static inline int 00319 __gthread_objc_init_thread_system (void) 00320 { 00321 if (__gthread_active_p ()) 00322 { 00323 /* Initialize the thread storage key. */ 00324 if (__gthrw_(pthread_key_create) (&_objc_thread_storage, NULL) == 0) 00325 { 00326 /* The normal default detach state for threads is 00327 * PTHREAD_CREATE_JOINABLE which causes threads to not die 00328 * when you think they should. */ 00329 if (__gthrw_(pthread_attr_init) (&_objc_thread_attribs) == 0 00330 && __gthrw_(pthread_attr_setdetachstate) (&_objc_thread_attribs, 00331 PTHREAD_CREATE_DETACHED) == 0) 00332 return 0; 00333 } 00334 } 00335 00336 return -1; 00337 } 00338 00339 /* Close the threads subsystem. */ 00340 static inline int 00341 __gthread_objc_close_thread_system (void) 00342 { 00343 if (__gthread_active_p () 00344 && __gthrw_(pthread_key_delete) (_objc_thread_storage) == 0 00345 && __gthrw_(pthread_attr_destroy) (&_objc_thread_attribs) == 0) 00346 return 0; 00347 00348 return -1; 00349 } 00350 00351 /* Backend thread functions */ 00352 00353 /* Create a new thread of execution. */ 00354 static inline objc_thread_t 00355 __gthread_objc_thread_detach (void (*func)(void *), void *arg) 00356 { 00357 objc_thread_t thread_id; 00358 pthread_t new_thread_handle; 00359 00360 if (!__gthread_active_p ()) 00361 return NULL; 00362 00363 if (!(__gthrw_(pthread_create) (&new_thread_handle, NULL, (void *) func, arg))) 00364 thread_id = (objc_thread_t) new_thread_handle; 00365 else 00366 thread_id = NULL; 00367 00368 return thread_id; 00369 } 00370 00371 /* Set the current thread's priority. */ 00372 static inline int 00373 __gthread_objc_thread_set_priority (int priority) 00374 { 00375 if (!__gthread_active_p ()) 00376 return -1; 00377 else 00378 { 00379 #ifdef _POSIX_PRIORITY_SCHEDULING 00380 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING 00381 pthread_t thread_id = __gthrw_(pthread_self) (); 00382 int policy; 00383 struct sched_param params; 00384 int priority_min, priority_max; 00385 00386 if (__gthrw_(pthread_getschedparam) (thread_id, &policy, ¶ms) == 0) 00387 { 00388 if ((priority_max = __gthrw_(sched_get_priority_max) (policy)) == -1) 00389 return -1; 00390 00391 if ((priority_min = __gthrw_(sched_get_priority_min) (policy)) == -1) 00392 return -1; 00393 00394 if (priority > priority_max) 00395 priority = priority_max; 00396 else if (priority < priority_min) 00397 priority = priority_min; 00398 params.sched_priority = priority; 00399 00400 /* 00401 * The solaris 7 and several other man pages incorrectly state that 00402 * this should be a pointer to policy but pthread.h is universally 00403 * at odds with this. 00404 */ 00405 if (__gthrw_(pthread_setschedparam) (thread_id, policy, ¶ms) == 0) 00406 return 0; 00407 } 00408 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ 00409 #endif /* _POSIX_PRIORITY_SCHEDULING */ 00410 return -1; 00411 } 00412 } 00413 00414 /* Return the current thread's priority. */ 00415 static inline int 00416 __gthread_objc_thread_get_priority (void) 00417 { 00418 #ifdef _POSIX_PRIORITY_SCHEDULING 00419 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING 00420 if (__gthread_active_p ()) 00421 { 00422 int policy; 00423 struct sched_param params; 00424 00425 if (__gthrw_(pthread_getschedparam) (__gthrw_(pthread_self) (), &policy, ¶ms) == 0) 00426 return params.sched_priority; 00427 else 00428 return -1; 00429 } 00430 else 00431 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ 00432 #endif /* _POSIX_PRIORITY_SCHEDULING */ 00433 return OBJC_THREAD_INTERACTIVE_PRIORITY; 00434 } 00435 00436 /* Yield our process time to another thread. */ 00437 static inline void 00438 __gthread_objc_thread_yield (void) 00439 { 00440 if (__gthread_active_p ()) 00441 __gthrw_(sched_yield) (); 00442 } 00443 00444 /* Terminate the current thread. */ 00445 static inline int 00446 __gthread_objc_thread_exit (void) 00447 { 00448 if (__gthread_active_p ()) 00449 /* exit the thread */ 00450 __gthrw_(pthread_exit) (&__objc_thread_exit_status); 00451 00452 /* Failed if we reached here */ 00453 return -1; 00454 } 00455 00456 /* Returns an integer value which uniquely describes a thread. */ 00457 static inline objc_thread_t 00458 __gthread_objc_thread_id (void) 00459 { 00460 if (__gthread_active_p ()) 00461 return (objc_thread_t) __gthrw_(pthread_self) (); 00462 else 00463 return (objc_thread_t) 1; 00464 } 00465 00466 /* Sets the thread's local storage pointer. */ 00467 static inline int 00468 __gthread_objc_thread_set_data (void *value) 00469 { 00470 if (__gthread_active_p ()) 00471 return __gthrw_(pthread_setspecific) (_objc_thread_storage, value); 00472 else 00473 { 00474 thread_local_storage = value; 00475 return 0; 00476 } 00477 } 00478 00479 /* Returns the thread's local storage pointer. */ 00480 static inline void * 00481 __gthread_objc_thread_get_data (void) 00482 { 00483 if (__gthread_active_p ()) 00484 return __gthrw_(pthread_getspecific) (_objc_thread_storage); 00485 else 00486 return thread_local_storage; 00487 } 00488 00489 /* Backend mutex functions */ 00490 00491 /* Allocate a mutex. */ 00492 static inline int 00493 __gthread_objc_mutex_allocate (objc_mutex_t mutex) 00494 { 00495 if (__gthread_active_p ()) 00496 { 00497 mutex->backend = objc_malloc (sizeof (pthread_mutex_t)); 00498 00499 if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, NULL)) 00500 { 00501 objc_free (mutex->backend); 00502 mutex->backend = NULL; 00503 return -1; 00504 } 00505 } 00506 00507 return 0; 00508 } 00509 00510 /* Deallocate a mutex. */ 00511 static inline int 00512 __gthread_objc_mutex_deallocate (objc_mutex_t mutex) 00513 { 00514 if (__gthread_active_p ()) 00515 { 00516 int count; 00517 00518 /* 00519 * Posix Threads specifically require that the thread be unlocked 00520 * for __gthrw_(pthread_mutex_destroy) to work. 00521 */ 00522 00523 do 00524 { 00525 count = __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend); 00526 if (count < 0) 00527 return -1; 00528 } 00529 while (count); 00530 00531 if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend)) 00532 return -1; 00533 00534 objc_free (mutex->backend); 00535 mutex->backend = NULL; 00536 } 00537 return 0; 00538 } 00539 00540 /* Grab a lock on a mutex. */ 00541 static inline int 00542 __gthread_objc_mutex_lock (objc_mutex_t mutex) 00543 { 00544 if (__gthread_active_p () 00545 && __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend) != 0) 00546 { 00547 return -1; 00548 } 00549 00550 return 0; 00551 } 00552 00553 /* Try to grab a lock on a mutex. */ 00554 static inline int 00555 __gthread_objc_mutex_trylock (objc_mutex_t mutex) 00556 { 00557 if (__gthread_active_p () 00558 && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 0) 00559 { 00560 return -1; 00561 } 00562 00563 return 0; 00564 } 00565 00566 /* Unlock the mutex */ 00567 static inline int 00568 __gthread_objc_mutex_unlock (objc_mutex_t mutex) 00569 { 00570 if (__gthread_active_p () 00571 && __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend) != 0) 00572 { 00573 return -1; 00574 } 00575 00576 return 0; 00577 } 00578 00579 /* Backend condition mutex functions */ 00580 00581 /* Allocate a condition. */ 00582 static inline int 00583 __gthread_objc_condition_allocate (objc_condition_t condition) 00584 { 00585 if (__gthread_active_p ()) 00586 { 00587 condition->backend = objc_malloc (sizeof (pthread_cond_t)); 00588 00589 if (__gthrw_(pthread_cond_init) ((pthread_cond_t *) condition->backend, NULL)) 00590 { 00591 objc_free (condition->backend); 00592 condition->backend = NULL; 00593 return -1; 00594 } 00595 } 00596 00597 return 0; 00598 } 00599 00600 /* Deallocate a condition. */ 00601 static inline int 00602 __gthread_objc_condition_deallocate (objc_condition_t condition) 00603 { 00604 if (__gthread_active_p ()) 00605 { 00606 if (__gthrw_(pthread_cond_destroy) ((pthread_cond_t *) condition->backend)) 00607 return -1; 00608 00609 objc_free (condition->backend); 00610 condition->backend = NULL; 00611 } 00612 return 0; 00613 } 00614 00615 /* Wait on the condition */ 00616 static inline int 00617 __gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex) 00618 { 00619 if (__gthread_active_p ()) 00620 return __gthrw_(pthread_cond_wait) ((pthread_cond_t *) condition->backend, 00621 (pthread_mutex_t *) mutex->backend); 00622 else 00623 return 0; 00624 } 00625 00626 /* Wake up all threads waiting on this condition. */ 00627 static inline int 00628 __gthread_objc_condition_broadcast (objc_condition_t condition) 00629 { 00630 if (__gthread_active_p ()) 00631 return __gthrw_(pthread_cond_broadcast) ((pthread_cond_t *) condition->backend); 00632 else 00633 return 0; 00634 } 00635 00636 /* Wake up one thread waiting on this condition. */ 00637 static inline int 00638 __gthread_objc_condition_signal (objc_condition_t condition) 00639 { 00640 if (__gthread_active_p ()) 00641 return __gthrw_(pthread_cond_signal) ((pthread_cond_t *) condition->backend); 00642 else 00643 return 0; 00644 } 00645 00646 #else /* _LIBOBJC */ 00647 00648 static inline int 00649 __gthread_create (__gthread_t *__threadid, void *(*__func) (void*), 00650 void *__args) 00651 { 00652 return __gthrw_(pthread_create) (__threadid, NULL, __func, __args); 00653 } 00654 00655 static inline int 00656 __gthread_join (__gthread_t __threadid, void **__value_ptr) 00657 { 00658 return __gthrw_(pthread_join) (__threadid, __value_ptr); 00659 } 00660 00661 static inline int 00662 __gthread_detach (__gthread_t __threadid) 00663 { 00664 return __gthrw_(pthread_detach) (__threadid); 00665 } 00666 00667 static inline int 00668 __gthread_equal (__gthread_t __t1, __gthread_t __t2) 00669 { 00670 return __gthrw_(pthread_equal) (__t1, __t2); 00671 } 00672 00673 static inline __gthread_t 00674 __gthread_self (void) 00675 { 00676 return __gthrw_(pthread_self) (); 00677 } 00678 00679 static inline int 00680 __gthread_yield (void) 00681 { 00682 return __gthrw_(sched_yield) (); 00683 } 00684 00685 static inline int 00686 __gthread_once (__gthread_once_t *__once, void (*__func) (void)) 00687 { 00688 if (__gthread_active_p ()) 00689 return __gthrw_(pthread_once) (__once, __func); 00690 else 00691 return -1; 00692 } 00693 00694 static inline int 00695 __gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) 00696 { 00697 return __gthrw_(pthread_key_create) (__key, __dtor); 00698 } 00699 00700 static inline int 00701 __gthread_key_delete (__gthread_key_t __key) 00702 { 00703 return __gthrw_(pthread_key_delete) (__key); 00704 } 00705 00706 static inline void * 00707 __gthread_getspecific (__gthread_key_t __key) 00708 { 00709 return __gthrw_(pthread_getspecific) (__key); 00710 } 00711 00712 static inline int 00713 __gthread_setspecific (__gthread_key_t __key, const void *__ptr) 00714 { 00715 return __gthrw_(pthread_setspecific) (__key, __ptr); 00716 } 00717 00718 static inline int 00719 __gthread_mutex_destroy (__gthread_mutex_t *__mutex) 00720 { 00721 if (__gthread_active_p ()) 00722 return __gthrw_(pthread_mutex_destroy) (__mutex); 00723 else 00724 return 0; 00725 } 00726 00727 static inline int 00728 __gthread_mutex_lock (__gthread_mutex_t *__mutex) 00729 { 00730 if (__gthread_active_p ()) 00731 return __gthrw_(pthread_mutex_lock) (__mutex); 00732 else 00733 return 0; 00734 } 00735 00736 static inline int 00737 __gthread_mutex_trylock (__gthread_mutex_t *__mutex) 00738 { 00739 if (__gthread_active_p ()) 00740 return __gthrw_(pthread_mutex_trylock) (__mutex); 00741 else 00742 return 0; 00743 } 00744 00745 #ifdef _POSIX_TIMEOUTS 00746 #if _POSIX_TIMEOUTS >= 0 00747 static inline int 00748 __gthread_mutex_timedlock (__gthread_mutex_t *__mutex, 00749 const __gthread_time_t *__abs_timeout) 00750 { 00751 if (__gthread_active_p ()) 00752 return __gthrw_(pthread_mutex_timedlock) (__mutex, __abs_timeout); 00753 else 00754 return 0; 00755 } 00756 #endif 00757 #endif 00758 00759 static inline int 00760 __gthread_mutex_unlock (__gthread_mutex_t *__mutex) 00761 { 00762 if (__gthread_active_p ()) 00763 return __gthrw_(pthread_mutex_unlock) (__mutex); 00764 else 00765 return 0; 00766 } 00767 00768 #ifndef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP 00769 static inline int 00770 __gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) 00771 { 00772 if (__gthread_active_p ()) 00773 { 00774 pthread_mutexattr_t __attr; 00775 int __r; 00776 00777 __r = __gthrw_(pthread_mutexattr_init) (&__attr); 00778 if (!__r) 00779 __r = __gthrw_(pthread_mutexattr_settype) (&__attr, 00780 PTHREAD_MUTEX_RECURSIVE); 00781 if (!__r) 00782 __r = __gthrw_(pthread_mutex_init) (__mutex, &__attr); 00783 if (!__r) 00784 __r = __gthrw_(pthread_mutexattr_destroy) (&__attr); 00785 return __r; 00786 } 00787 return 0; 00788 } 00789 #endif 00790 00791 static inline int 00792 __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) 00793 { 00794 return __gthread_mutex_lock (__mutex); 00795 } 00796 00797 static inline int 00798 __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) 00799 { 00800 return __gthread_mutex_trylock (__mutex); 00801 } 00802 00803 #ifdef _POSIX_TIMEOUTS 00804 #if _POSIX_TIMEOUTS >= 0 00805 static inline int 00806 __gthread_recursive_mutex_timedlock (__gthread_recursive_mutex_t *__mutex, 00807 const __gthread_time_t *__abs_timeout) 00808 { 00809 return __gthread_mutex_timedlock (__mutex, __abs_timeout); 00810 } 00811 #endif 00812 #endif 00813 00814 static inline int 00815 __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) 00816 { 00817 return __gthread_mutex_unlock (__mutex); 00818 } 00819 00820 static inline int 00821 __gthread_cond_broadcast (__gthread_cond_t *__cond) 00822 { 00823 return __gthrw_(pthread_cond_broadcast) (__cond); 00824 } 00825 00826 static inline int 00827 __gthread_cond_signal (__gthread_cond_t *__cond) 00828 { 00829 return __gthrw_(pthread_cond_signal) (__cond); 00830 } 00831 00832 static inline int 00833 __gthread_cond_wait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex) 00834 { 00835 return __gthrw_(pthread_cond_wait) (__cond, __mutex); 00836 } 00837 00838 static inline int 00839 __gthread_cond_timedwait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex, 00840 const __gthread_time_t *__abs_timeout) 00841 { 00842 return __gthrw_(pthread_cond_timedwait) (__cond, __mutex, __abs_timeout); 00843 } 00844 00845 static inline int 00846 __gthread_cond_wait_recursive (__gthread_cond_t *__cond, 00847 __gthread_recursive_mutex_t *__mutex) 00848 { 00849 return __gthread_cond_wait (__cond, __mutex); 00850 } 00851 00852 static inline int 00853 __gthread_cond_timedwait_recursive (__gthread_cond_t *__cond, 00854 __gthread_recursive_mutex_t *__mutex, 00855 const __gthread_time_t *__abs_timeout) 00856 { 00857 return __gthread_cond_timedwait (__cond, __mutex, __abs_timeout); 00858 } 00859 00860 static inline int 00861 __gthread_cond_destroy (__gthread_cond_t* __cond) 00862 { 00863 return __gthrw_(pthread_cond_destroy) (__cond); 00864 } 00865 00866 #endif /* _LIBOBJC */ 00867 00868 #endif /* ! _GLIBCXX_GCC_GTHR_POSIX_H */