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, 2010 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 #ifndef __BIONIC__ 00128 __gthrw(pthread_cancel) 00129 #endif 00130 __gthrw(sched_yield) 00131 00132 __gthrw(pthread_mutex_lock) 00133 __gthrw(pthread_mutex_trylock) 00134 #ifdef _POSIX_TIMEOUTS 00135 #if _POSIX_TIMEOUTS >= 0 00136 __gthrw(pthread_mutex_timedlock) 00137 #endif 00138 #endif /* _POSIX_TIMEOUTS */ 00139 __gthrw(pthread_mutex_unlock) 00140 __gthrw(pthread_mutex_init) 00141 __gthrw(pthread_mutex_destroy) 00142 00143 __gthrw(pthread_cond_broadcast) 00144 __gthrw(pthread_cond_signal) 00145 __gthrw(pthread_cond_wait) 00146 __gthrw(pthread_cond_timedwait) 00147 __gthrw(pthread_cond_destroy) 00148 #endif 00149 00150 __gthrw(pthread_key_create) 00151 __gthrw(pthread_key_delete) 00152 __gthrw(pthread_mutexattr_init) 00153 __gthrw(pthread_mutexattr_settype) 00154 __gthrw(pthread_mutexattr_destroy) 00155 00156 00157 #if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK) 00158 /* Objective-C. */ 00159 #if defined(__osf__) && defined(_PTHREAD_USE_MANGLED_NAMES_) 00160 __gthrw3(pthread_cond_init) 00161 __gthrw3(pthread_exit) 00162 #else 00163 __gthrw(pthread_cond_init) 00164 __gthrw(pthread_exit) 00165 #endif /* __osf__ && _PTHREAD_USE_MANGLED_NAMES_ */ 00166 #ifdef _POSIX_PRIORITY_SCHEDULING 00167 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING 00168 __gthrw(sched_get_priority_max) 00169 __gthrw(sched_get_priority_min) 00170 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ 00171 #endif /* _POSIX_PRIORITY_SCHEDULING */ 00172 __gthrw(pthread_attr_destroy) 00173 __gthrw(pthread_attr_init) 00174 __gthrw(pthread_attr_setdetachstate) 00175 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING 00176 __gthrw(pthread_getschedparam) 00177 __gthrw(pthread_setschedparam) 00178 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ 00179 #endif /* _LIBOBJC || _LIBOBJC_WEAK */ 00180 00181 #if __GXX_WEAK__ && _GLIBCXX_GTHREAD_USE_WEAK 00182 00183 /* On Solaris 2.6 up to 9, the libc exposes a POSIX threads interface even if 00184 -pthreads is not specified. The functions are dummies and most return an 00185 error value. However pthread_once returns 0 without invoking the routine 00186 it is passed so we cannot pretend that the interface is active if -pthreads 00187 is not specified. On Solaris 2.5.1, the interface is not exposed at all so 00188 we need to play the usual game with weak symbols. On Solaris 10 and up, a 00189 working interface is always exposed. On FreeBSD 6 and later, libc also 00190 exposes a dummy POSIX threads interface, similar to what Solaris 2.6 up 00191 to 9 does. FreeBSD >= 700014 even provides a pthread_cancel stub in libc, 00192 which means the alternate __gthread_active_p below cannot be used there. */ 00193 00194 #if defined(__FreeBSD__) || (defined(__sun) && defined(__svr4__)) 00195 00196 static volatile int __gthread_active = -1; 00197 00198 static void 00199 __gthread_trigger (void) 00200 { 00201 __gthread_active = 1; 00202 } 00203 00204 static inline int 00205 __gthread_active_p (void) 00206 { 00207 static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER; 00208 static pthread_once_t __gthread_active_once = PTHREAD_ONCE_INIT; 00209 00210 /* Avoid reading __gthread_active twice on the main code path. */ 00211 int __gthread_active_latest_value = __gthread_active; 00212 00213 /* This test is not protected to avoid taking a lock on the main code 00214 path so every update of __gthread_active in a threaded program must 00215 be atomic with regard to the result of the test. */ 00216 if (__builtin_expect (__gthread_active_latest_value < 0, 0)) 00217 { 00218 if (__gthrw_(pthread_once)) 00219 { 00220 /* If this really is a threaded program, then we must ensure that 00221 __gthread_active has been set to 1 before exiting this block. */ 00222 __gthrw_(pthread_mutex_lock) (&__gthread_active_mutex); 00223 __gthrw_(pthread_once) (&__gthread_active_once, __gthread_trigger); 00224 __gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex); 00225 } 00226 00227 /* Make sure we'll never enter this block again. */ 00228 if (__gthread_active < 0) 00229 __gthread_active = 0; 00230 00231 __gthread_active_latest_value = __gthread_active; 00232 } 00233 00234 return __gthread_active_latest_value != 0; 00235 } 00236 00237 #else /* neither FreeBSD nor Solaris */ 00238 00239 static inline int 00240 __gthread_active_p (void) 00241 { 00242 /* Android's C library does not provide pthread_cancel, check for 00243 `pthread_create' instead. */ 00244 #ifndef __BIONIC__ 00245 static void *const __gthread_active_ptr 00246 = __extension__ (void *) &__gthrw_(pthread_cancel); 00247 #else 00248 static void *const __gthread_active_ptr 00249 = __extension__ (void *) &__gthrw_(pthread_create); 00250 #endif 00251 return __gthread_active_ptr != 0; 00252 } 00253 00254 #endif /* FreeBSD or Solaris */ 00255 00256 #else /* not __GXX_WEAK__ */ 00257 00258 /* Similar to Solaris, HP-UX 11 for PA-RISC provides stubs for pthread 00259 calls in shared flavors of the HP-UX C library. Most of the stubs 00260 have no functionality. The details are described in the "libc cumulative 00261 patch" for each subversion of HP-UX 11. There are two special interfaces 00262 provided for checking whether an application is linked to a shared pthread 00263 library or not. However, these interfaces aren't available in early 00264 libpthread libraries. We also need a test that works for archive 00265 libraries. We can't use pthread_once as some libc versions call the 00266 init function. We also can't use pthread_create or pthread_attr_init 00267 as these create a thread and thereby prevent changing the default stack 00268 size. The function pthread_default_stacksize_np is available in both 00269 the archive and shared versions of libpthread. It can be used to 00270 determine the default pthread stack size. There is a stub in some 00271 shared libc versions which returns a zero size if pthreads are not 00272 active. We provide an equivalent stub to handle cases where libc 00273 doesn't provide one. */ 00274 00275 #if defined(__hppa__) && defined(__hpux__) 00276 00277 static volatile int __gthread_active = -1; 00278 00279 static inline int 00280 __gthread_active_p (void) 00281 { 00282 /* Avoid reading __gthread_active twice on the main code path. */ 00283 int __gthread_active_latest_value = __gthread_active; 00284 size_t __s; 00285 00286 if (__builtin_expect (__gthread_active_latest_value < 0, 0)) 00287 { 00288 pthread_default_stacksize_np (0, &__s); 00289 __gthread_active = __s ? 1 : 0; 00290 __gthread_active_latest_value = __gthread_active; 00291 } 00292 00293 return __gthread_active_latest_value != 0; 00294 } 00295 00296 #else /* not hppa-hpux */ 00297 00298 static inline int 00299 __gthread_active_p (void) 00300 { 00301 return 1; 00302 } 00303 00304 #endif /* hppa-hpux */ 00305 00306 #endif /* __GXX_WEAK__ */ 00307 00308 #ifdef _LIBOBJC 00309 00310 /* This is the config.h file in libobjc/ */ 00311 #include <config.h> 00312 00313 #ifdef HAVE_SCHED_H 00314 # include <sched.h> 00315 #endif 00316 00317 /* Key structure for maintaining thread specific storage */ 00318 static pthread_key_t _objc_thread_storage; 00319 static pthread_attr_t _objc_thread_attribs; 00320 00321 /* Thread local storage for a single thread */ 00322 static void *thread_local_storage = NULL; 00323 00324 /* Backend initialization functions */ 00325 00326 /* Initialize the threads subsystem. */ 00327 static inline int 00328 __gthread_objc_init_thread_system (void) 00329 { 00330 if (__gthread_active_p ()) 00331 { 00332 /* Initialize the thread storage key. */ 00333 if (__gthrw_(pthread_key_create) (&_objc_thread_storage, NULL) == 0) 00334 { 00335 /* The normal default detach state for threads is 00336 * PTHREAD_CREATE_JOINABLE which causes threads to not die 00337 * when you think they should. */ 00338 if (__gthrw_(pthread_attr_init) (&_objc_thread_attribs) == 0 00339 && __gthrw_(pthread_attr_setdetachstate) (&_objc_thread_attribs, 00340 PTHREAD_CREATE_DETACHED) == 0) 00341 return 0; 00342 } 00343 } 00344 00345 return -1; 00346 } 00347 00348 /* Close the threads subsystem. */ 00349 static inline int 00350 __gthread_objc_close_thread_system (void) 00351 { 00352 if (__gthread_active_p () 00353 && __gthrw_(pthread_key_delete) (_objc_thread_storage) == 0 00354 && __gthrw_(pthread_attr_destroy) (&_objc_thread_attribs) == 0) 00355 return 0; 00356 00357 return -1; 00358 } 00359 00360 /* Backend thread functions */ 00361 00362 /* Create a new thread of execution. */ 00363 static inline objc_thread_t 00364 __gthread_objc_thread_detach (void (*func)(void *), void *arg) 00365 { 00366 objc_thread_t thread_id; 00367 pthread_t new_thread_handle; 00368 00369 if (!__gthread_active_p ()) 00370 return NULL; 00371 00372 if (!(__gthrw_(pthread_create) (&new_thread_handle, &_objc_thread_attribs, 00373 (void *) func, arg))) 00374 thread_id = (objc_thread_t) new_thread_handle; 00375 else 00376 thread_id = NULL; 00377 00378 return thread_id; 00379 } 00380 00381 /* Set the current thread's priority. */ 00382 static inline int 00383 __gthread_objc_thread_set_priority (int priority) 00384 { 00385 if (!__gthread_active_p ()) 00386 return -1; 00387 else 00388 { 00389 #ifdef _POSIX_PRIORITY_SCHEDULING 00390 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING 00391 pthread_t thread_id = __gthrw_(pthread_self) (); 00392 int policy; 00393 struct sched_param params; 00394 int priority_min, priority_max; 00395 00396 if (__gthrw_(pthread_getschedparam) (thread_id, &policy, ¶ms) == 0) 00397 { 00398 if ((priority_max = __gthrw_(sched_get_priority_max) (policy)) == -1) 00399 return -1; 00400 00401 if ((priority_min = __gthrw_(sched_get_priority_min) (policy)) == -1) 00402 return -1; 00403 00404 if (priority > priority_max) 00405 priority = priority_max; 00406 else if (priority < priority_min) 00407 priority = priority_min; 00408 params.sched_priority = priority; 00409 00410 /* 00411 * The solaris 7 and several other man pages incorrectly state that 00412 * this should be a pointer to policy but pthread.h is universally 00413 * at odds with this. 00414 */ 00415 if (__gthrw_(pthread_setschedparam) (thread_id, policy, ¶ms) == 0) 00416 return 0; 00417 } 00418 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ 00419 #endif /* _POSIX_PRIORITY_SCHEDULING */ 00420 return -1; 00421 } 00422 } 00423 00424 /* Return the current thread's priority. */ 00425 static inline int 00426 __gthread_objc_thread_get_priority (void) 00427 { 00428 #ifdef _POSIX_PRIORITY_SCHEDULING 00429 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING 00430 if (__gthread_active_p ()) 00431 { 00432 int policy; 00433 struct sched_param params; 00434 00435 if (__gthrw_(pthread_getschedparam) (__gthrw_(pthread_self) (), &policy, ¶ms) == 0) 00436 return params.sched_priority; 00437 else 00438 return -1; 00439 } 00440 else 00441 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ 00442 #endif /* _POSIX_PRIORITY_SCHEDULING */ 00443 return OBJC_THREAD_INTERACTIVE_PRIORITY; 00444 } 00445 00446 /* Yield our process time to another thread. */ 00447 static inline void 00448 __gthread_objc_thread_yield (void) 00449 { 00450 if (__gthread_active_p ()) 00451 __gthrw_(sched_yield) (); 00452 } 00453 00454 /* Terminate the current thread. */ 00455 static inline int 00456 __gthread_objc_thread_exit (void) 00457 { 00458 if (__gthread_active_p ()) 00459 /* exit the thread */ 00460 __gthrw_(pthread_exit) (&__objc_thread_exit_status); 00461 00462 /* Failed if we reached here */ 00463 return -1; 00464 } 00465 00466 /* Returns an integer value which uniquely describes a thread. */ 00467 static inline objc_thread_t 00468 __gthread_objc_thread_id (void) 00469 { 00470 if (__gthread_active_p ()) 00471 return (objc_thread_t) __gthrw_(pthread_self) (); 00472 else 00473 return (objc_thread_t) 1; 00474 } 00475 00476 /* Sets the thread's local storage pointer. */ 00477 static inline int 00478 __gthread_objc_thread_set_data (void *value) 00479 { 00480 if (__gthread_active_p ()) 00481 return __gthrw_(pthread_setspecific) (_objc_thread_storage, value); 00482 else 00483 { 00484 thread_local_storage = value; 00485 return 0; 00486 } 00487 } 00488 00489 /* Returns the thread's local storage pointer. */ 00490 static inline void * 00491 __gthread_objc_thread_get_data (void) 00492 { 00493 if (__gthread_active_p ()) 00494 return __gthrw_(pthread_getspecific) (_objc_thread_storage); 00495 else 00496 return thread_local_storage; 00497 } 00498 00499 /* Backend mutex functions */ 00500 00501 /* Allocate a mutex. */ 00502 static inline int 00503 __gthread_objc_mutex_allocate (objc_mutex_t mutex) 00504 { 00505 if (__gthread_active_p ()) 00506 { 00507 mutex->backend = objc_malloc (sizeof (pthread_mutex_t)); 00508 00509 if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, NULL)) 00510 { 00511 objc_free (mutex->backend); 00512 mutex->backend = NULL; 00513 return -1; 00514 } 00515 } 00516 00517 return 0; 00518 } 00519 00520 /* Deallocate a mutex. */ 00521 static inline int 00522 __gthread_objc_mutex_deallocate (objc_mutex_t mutex) 00523 { 00524 if (__gthread_active_p ()) 00525 { 00526 int count; 00527 00528 /* 00529 * Posix Threads specifically require that the thread be unlocked 00530 * for __gthrw_(pthread_mutex_destroy) to work. 00531 */ 00532 00533 do 00534 { 00535 count = __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend); 00536 if (count < 0) 00537 return -1; 00538 } 00539 while (count); 00540 00541 if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend)) 00542 return -1; 00543 00544 objc_free (mutex->backend); 00545 mutex->backend = NULL; 00546 } 00547 return 0; 00548 } 00549 00550 /* Grab a lock on a mutex. */ 00551 static inline int 00552 __gthread_objc_mutex_lock (objc_mutex_t mutex) 00553 { 00554 if (__gthread_active_p () 00555 && __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend) != 0) 00556 { 00557 return -1; 00558 } 00559 00560 return 0; 00561 } 00562 00563 /* Try to grab a lock on a mutex. */ 00564 static inline int 00565 __gthread_objc_mutex_trylock (objc_mutex_t mutex) 00566 { 00567 if (__gthread_active_p () 00568 && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 0) 00569 { 00570 return -1; 00571 } 00572 00573 return 0; 00574 } 00575 00576 /* Unlock the mutex */ 00577 static inline int 00578 __gthread_objc_mutex_unlock (objc_mutex_t mutex) 00579 { 00580 if (__gthread_active_p () 00581 && __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend) != 0) 00582 { 00583 return -1; 00584 } 00585 00586 return 0; 00587 } 00588 00589 /* Backend condition mutex functions */ 00590 00591 /* Allocate a condition. */ 00592 static inline int 00593 __gthread_objc_condition_allocate (objc_condition_t condition) 00594 { 00595 if (__gthread_active_p ()) 00596 { 00597 condition->backend = objc_malloc (sizeof (pthread_cond_t)); 00598 00599 if (__gthrw_(pthread_cond_init) ((pthread_cond_t *) condition->backend, NULL)) 00600 { 00601 objc_free (condition->backend); 00602 condition->backend = NULL; 00603 return -1; 00604 } 00605 } 00606 00607 return 0; 00608 } 00609 00610 /* Deallocate a condition. */ 00611 static inline int 00612 __gthread_objc_condition_deallocate (objc_condition_t condition) 00613 { 00614 if (__gthread_active_p ()) 00615 { 00616 if (__gthrw_(pthread_cond_destroy) ((pthread_cond_t *) condition->backend)) 00617 return -1; 00618 00619 objc_free (condition->backend); 00620 condition->backend = NULL; 00621 } 00622 return 0; 00623 } 00624 00625 /* Wait on the condition */ 00626 static inline int 00627 __gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex) 00628 { 00629 if (__gthread_active_p ()) 00630 return __gthrw_(pthread_cond_wait) ((pthread_cond_t *) condition->backend, 00631 (pthread_mutex_t *) mutex->backend); 00632 else 00633 return 0; 00634 } 00635 00636 /* Wake up all threads waiting on this condition. */ 00637 static inline int 00638 __gthread_objc_condition_broadcast (objc_condition_t condition) 00639 { 00640 if (__gthread_active_p ()) 00641 return __gthrw_(pthread_cond_broadcast) ((pthread_cond_t *) condition->backend); 00642 else 00643 return 0; 00644 } 00645 00646 /* Wake up one thread waiting on this condition. */ 00647 static inline int 00648 __gthread_objc_condition_signal (objc_condition_t condition) 00649 { 00650 if (__gthread_active_p ()) 00651 return __gthrw_(pthread_cond_signal) ((pthread_cond_t *) condition->backend); 00652 else 00653 return 0; 00654 } 00655 00656 #else /* _LIBOBJC */ 00657 00658 static inline int 00659 __gthread_create (__gthread_t *__threadid, void *(*__func) (void*), 00660 void *__args) 00661 { 00662 return __gthrw_(pthread_create) (__threadid, NULL, __func, __args); 00663 } 00664 00665 static inline int 00666 __gthread_join (__gthread_t __threadid, void **__value_ptr) 00667 { 00668 return __gthrw_(pthread_join) (__threadid, __value_ptr); 00669 } 00670 00671 static inline int 00672 __gthread_detach (__gthread_t __threadid) 00673 { 00674 return __gthrw_(pthread_detach) (__threadid); 00675 } 00676 00677 static inline int 00678 __gthread_equal (__gthread_t __t1, __gthread_t __t2) 00679 { 00680 return __gthrw_(pthread_equal) (__t1, __t2); 00681 } 00682 00683 static inline __gthread_t 00684 __gthread_self (void) 00685 { 00686 return __gthrw_(pthread_self) (); 00687 } 00688 00689 static inline int 00690 __gthread_yield (void) 00691 { 00692 return __gthrw_(sched_yield) (); 00693 } 00694 00695 static inline int 00696 __gthread_once (__gthread_once_t *__once, void (*__func) (void)) 00697 { 00698 if (__gthread_active_p ()) 00699 return __gthrw_(pthread_once) (__once, __func); 00700 else 00701 return -1; 00702 } 00703 00704 static inline int 00705 __gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) 00706 { 00707 return __gthrw_(pthread_key_create) (__key, __dtor); 00708 } 00709 00710 static inline int 00711 __gthread_key_delete (__gthread_key_t __key) 00712 { 00713 return __gthrw_(pthread_key_delete) (__key); 00714 } 00715 00716 static inline void * 00717 __gthread_getspecific (__gthread_key_t __key) 00718 { 00719 return __gthrw_(pthread_getspecific) (__key); 00720 } 00721 00722 static inline int 00723 __gthread_setspecific (__gthread_key_t __key, const void *__ptr) 00724 { 00725 return __gthrw_(pthread_setspecific) (__key, __ptr); 00726 } 00727 00728 static inline int 00729 __gthread_mutex_destroy (__gthread_mutex_t *__mutex) 00730 { 00731 if (__gthread_active_p ()) 00732 return __gthrw_(pthread_mutex_destroy) (__mutex); 00733 else 00734 return 0; 00735 } 00736 00737 static inline int 00738 __gthread_mutex_lock (__gthread_mutex_t *__mutex) 00739 { 00740 if (__gthread_active_p ()) 00741 return __gthrw_(pthread_mutex_lock) (__mutex); 00742 else 00743 return 0; 00744 } 00745 00746 static inline int 00747 __gthread_mutex_trylock (__gthread_mutex_t *__mutex) 00748 { 00749 if (__gthread_active_p ()) 00750 return __gthrw_(pthread_mutex_trylock) (__mutex); 00751 else 00752 return 0; 00753 } 00754 00755 #ifdef _POSIX_TIMEOUTS 00756 #if _POSIX_TIMEOUTS >= 0 00757 static inline int 00758 __gthread_mutex_timedlock (__gthread_mutex_t *__mutex, 00759 const __gthread_time_t *__abs_timeout) 00760 { 00761 if (__gthread_active_p ()) 00762 return __gthrw_(pthread_mutex_timedlock) (__mutex, __abs_timeout); 00763 else 00764 return 0; 00765 } 00766 #endif 00767 #endif 00768 00769 static inline int 00770 __gthread_mutex_unlock (__gthread_mutex_t *__mutex) 00771 { 00772 if (__gthread_active_p ()) 00773 return __gthrw_(pthread_mutex_unlock) (__mutex); 00774 else 00775 return 0; 00776 } 00777 00778 #ifndef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP 00779 static inline int 00780 __gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) 00781 { 00782 if (__gthread_active_p ()) 00783 { 00784 pthread_mutexattr_t __attr; 00785 int __r; 00786 00787 __r = __gthrw_(pthread_mutexattr_init) (&__attr); 00788 if (!__r) 00789 __r = __gthrw_(pthread_mutexattr_settype) (&__attr, 00790 PTHREAD_MUTEX_RECURSIVE); 00791 if (!__r) 00792 __r = __gthrw_(pthread_mutex_init) (__mutex, &__attr); 00793 if (!__r) 00794 __r = __gthrw_(pthread_mutexattr_destroy) (&__attr); 00795 return __r; 00796 } 00797 return 0; 00798 } 00799 #endif 00800 00801 static inline int 00802 __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) 00803 { 00804 return __gthread_mutex_lock (__mutex); 00805 } 00806 00807 static inline int 00808 __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) 00809 { 00810 return __gthread_mutex_trylock (__mutex); 00811 } 00812 00813 #ifdef _POSIX_TIMEOUTS 00814 #if _POSIX_TIMEOUTS >= 0 00815 static inline int 00816 __gthread_recursive_mutex_timedlock (__gthread_recursive_mutex_t *__mutex, 00817 const __gthread_time_t *__abs_timeout) 00818 { 00819 return __gthread_mutex_timedlock (__mutex, __abs_timeout); 00820 } 00821 #endif 00822 #endif 00823 00824 static inline int 00825 __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) 00826 { 00827 return __gthread_mutex_unlock (__mutex); 00828 } 00829 00830 static inline int 00831 __gthread_cond_broadcast (__gthread_cond_t *__cond) 00832 { 00833 return __gthrw_(pthread_cond_broadcast) (__cond); 00834 } 00835 00836 static inline int 00837 __gthread_cond_signal (__gthread_cond_t *__cond) 00838 { 00839 return __gthrw_(pthread_cond_signal) (__cond); 00840 } 00841 00842 static inline int 00843 __gthread_cond_wait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex) 00844 { 00845 return __gthrw_(pthread_cond_wait) (__cond, __mutex); 00846 } 00847 00848 static inline int 00849 __gthread_cond_timedwait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex, 00850 const __gthread_time_t *__abs_timeout) 00851 { 00852 return __gthrw_(pthread_cond_timedwait) (__cond, __mutex, __abs_timeout); 00853 } 00854 00855 static inline int 00856 __gthread_cond_wait_recursive (__gthread_cond_t *__cond, 00857 __gthread_recursive_mutex_t *__mutex) 00858 { 00859 return __gthread_cond_wait (__cond, __mutex); 00860 } 00861 00862 static inline int 00863 __gthread_cond_timedwait_recursive (__gthread_cond_t *__cond, 00864 __gthread_recursive_mutex_t *__mutex, 00865 const __gthread_time_t *__abs_timeout) 00866 { 00867 return __gthread_cond_timedwait (__cond, __mutex, __abs_timeout); 00868 } 00869 00870 static inline int 00871 __gthread_cond_destroy (__gthread_cond_t* __cond) 00872 { 00873 return __gthrw_(pthread_cond_destroy) (__cond); 00874 } 00875 00876 #endif /* _LIBOBJC */ 00877 00878 #endif /* ! _GLIBCXX_GCC_GTHR_POSIX_H */