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 static void *const __gthread_active_ptr 00243 = __extension__ (void *) &__gthrw_( 00244 /* Android's C library does not provide pthread_cancel, check for 00245 `pthread_create' instead. */ 00246 #ifndef __BIONIC__ 00247 pthread_cancel 00248 #else 00249 pthread_create 00250 #endif 00251 ); 00252 return __gthread_active_ptr != 0; 00253 } 00254 00255 #endif /* FreeBSD or Solaris */ 00256 00257 #else /* not __GXX_WEAK__ */ 00258 00259 /* Similar to Solaris, HP-UX 11 for PA-RISC provides stubs for pthread 00260 calls in shared flavors of the HP-UX C library. Most of the stubs 00261 have no functionality. The details are described in the "libc cumulative 00262 patch" for each subversion of HP-UX 11. There are two special interfaces 00263 provided for checking whether an application is linked to a shared pthread 00264 library or not. However, these interfaces aren't available in early 00265 libpthread libraries. We also need a test that works for archive 00266 libraries. We can't use pthread_once as some libc versions call the 00267 init function. We also can't use pthread_create or pthread_attr_init 00268 as these create a thread and thereby prevent changing the default stack 00269 size. The function pthread_default_stacksize_np is available in both 00270 the archive and shared versions of libpthread. It can be used to 00271 determine the default pthread stack size. There is a stub in some 00272 shared libc versions which returns a zero size if pthreads are not 00273 active. We provide an equivalent stub to handle cases where libc 00274 doesn't provide one. */ 00275 00276 #if defined(__hppa__) && defined(__hpux__) 00277 00278 static volatile int __gthread_active = -1; 00279 00280 static inline int 00281 __gthread_active_p (void) 00282 { 00283 /* Avoid reading __gthread_active twice on the main code path. */ 00284 int __gthread_active_latest_value = __gthread_active; 00285 size_t __s; 00286 00287 if (__builtin_expect (__gthread_active_latest_value < 0, 0)) 00288 { 00289 pthread_default_stacksize_np (0, &__s); 00290 __gthread_active = __s ? 1 : 0; 00291 __gthread_active_latest_value = __gthread_active; 00292 } 00293 00294 return __gthread_active_latest_value != 0; 00295 } 00296 00297 #else /* not hppa-hpux */ 00298 00299 static inline int 00300 __gthread_active_p (void) 00301 { 00302 return 1; 00303 } 00304 00305 #endif /* hppa-hpux */ 00306 00307 #endif /* __GXX_WEAK__ */ 00308 00309 #ifdef _LIBOBJC 00310 00311 /* This is the config.h file in libobjc/ */ 00312 #include <config.h> 00313 00314 #ifdef HAVE_SCHED_H 00315 # include <sched.h> 00316 #endif 00317 00318 /* Key structure for maintaining thread specific storage */ 00319 static pthread_key_t _objc_thread_storage; 00320 static pthread_attr_t _objc_thread_attribs; 00321 00322 /* Thread local storage for a single thread */ 00323 static void *thread_local_storage = NULL; 00324 00325 /* Backend initialization functions */ 00326 00327 /* Initialize the threads subsystem. */ 00328 static inline int 00329 __gthread_objc_init_thread_system (void) 00330 { 00331 if (__gthread_active_p ()) 00332 { 00333 /* Initialize the thread storage key. */ 00334 if (__gthrw_(pthread_key_create) (&_objc_thread_storage, NULL) == 0) 00335 { 00336 /* The normal default detach state for threads is 00337 * PTHREAD_CREATE_JOINABLE which causes threads to not die 00338 * when you think they should. */ 00339 if (__gthrw_(pthread_attr_init) (&_objc_thread_attribs) == 0 00340 && __gthrw_(pthread_attr_setdetachstate) (&_objc_thread_attribs, 00341 PTHREAD_CREATE_DETACHED) == 0) 00342 return 0; 00343 } 00344 } 00345 00346 return -1; 00347 } 00348 00349 /* Close the threads subsystem. */ 00350 static inline int 00351 __gthread_objc_close_thread_system (void) 00352 { 00353 if (__gthread_active_p () 00354 && __gthrw_(pthread_key_delete) (_objc_thread_storage) == 0 00355 && __gthrw_(pthread_attr_destroy) (&_objc_thread_attribs) == 0) 00356 return 0; 00357 00358 return -1; 00359 } 00360 00361 /* Backend thread functions */ 00362 00363 /* Create a new thread of execution. */ 00364 static inline objc_thread_t 00365 __gthread_objc_thread_detach (void (*func)(void *), void *arg) 00366 { 00367 objc_thread_t thread_id; 00368 pthread_t new_thread_handle; 00369 00370 if (!__gthread_active_p ()) 00371 return NULL; 00372 00373 if (!(__gthrw_(pthread_create) (&new_thread_handle, &_objc_thread_attribs, 00374 (void *) func, arg))) 00375 thread_id = (objc_thread_t) new_thread_handle; 00376 else 00377 thread_id = NULL; 00378 00379 return thread_id; 00380 } 00381 00382 /* Set the current thread's priority. */ 00383 static inline int 00384 __gthread_objc_thread_set_priority (int priority) 00385 { 00386 if (!__gthread_active_p ()) 00387 return -1; 00388 else 00389 { 00390 #ifdef _POSIX_PRIORITY_SCHEDULING 00391 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING 00392 pthread_t thread_id = __gthrw_(pthread_self) (); 00393 int policy; 00394 struct sched_param params; 00395 int priority_min, priority_max; 00396 00397 if (__gthrw_(pthread_getschedparam) (thread_id, &policy, ¶ms) == 0) 00398 { 00399 if ((priority_max = __gthrw_(sched_get_priority_max) (policy)) == -1) 00400 return -1; 00401 00402 if ((priority_min = __gthrw_(sched_get_priority_min) (policy)) == -1) 00403 return -1; 00404 00405 if (priority > priority_max) 00406 priority = priority_max; 00407 else if (priority < priority_min) 00408 priority = priority_min; 00409 params.sched_priority = priority; 00410 00411 /* 00412 * The solaris 7 and several other man pages incorrectly state that 00413 * this should be a pointer to policy but pthread.h is universally 00414 * at odds with this. 00415 */ 00416 if (__gthrw_(pthread_setschedparam) (thread_id, policy, ¶ms) == 0) 00417 return 0; 00418 } 00419 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ 00420 #endif /* _POSIX_PRIORITY_SCHEDULING */ 00421 return -1; 00422 } 00423 } 00424 00425 /* Return the current thread's priority. */ 00426 static inline int 00427 __gthread_objc_thread_get_priority (void) 00428 { 00429 #ifdef _POSIX_PRIORITY_SCHEDULING 00430 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING 00431 if (__gthread_active_p ()) 00432 { 00433 int policy; 00434 struct sched_param params; 00435 00436 if (__gthrw_(pthread_getschedparam) (__gthrw_(pthread_self) (), &policy, ¶ms) == 0) 00437 return params.sched_priority; 00438 else 00439 return -1; 00440 } 00441 else 00442 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ 00443 #endif /* _POSIX_PRIORITY_SCHEDULING */ 00444 return OBJC_THREAD_INTERACTIVE_PRIORITY; 00445 } 00446 00447 /* Yield our process time to another thread. */ 00448 static inline void 00449 __gthread_objc_thread_yield (void) 00450 { 00451 if (__gthread_active_p ()) 00452 __gthrw_(sched_yield) (); 00453 } 00454 00455 /* Terminate the current thread. */ 00456 static inline int 00457 __gthread_objc_thread_exit (void) 00458 { 00459 if (__gthread_active_p ()) 00460 /* exit the thread */ 00461 __gthrw_(pthread_exit) (&__objc_thread_exit_status); 00462 00463 /* Failed if we reached here */ 00464 return -1; 00465 } 00466 00467 /* Returns an integer value which uniquely describes a thread. */ 00468 static inline objc_thread_t 00469 __gthread_objc_thread_id (void) 00470 { 00471 if (__gthread_active_p ()) 00472 return (objc_thread_t) __gthrw_(pthread_self) (); 00473 else 00474 return (objc_thread_t) 1; 00475 } 00476 00477 /* Sets the thread's local storage pointer. */ 00478 static inline int 00479 __gthread_objc_thread_set_data (void *value) 00480 { 00481 if (__gthread_active_p ()) 00482 return __gthrw_(pthread_setspecific) (_objc_thread_storage, value); 00483 else 00484 { 00485 thread_local_storage = value; 00486 return 0; 00487 } 00488 } 00489 00490 /* Returns the thread's local storage pointer. */ 00491 static inline void * 00492 __gthread_objc_thread_get_data (void) 00493 { 00494 if (__gthread_active_p ()) 00495 return __gthrw_(pthread_getspecific) (_objc_thread_storage); 00496 else 00497 return thread_local_storage; 00498 } 00499 00500 /* Backend mutex functions */ 00501 00502 /* Allocate a mutex. */ 00503 static inline int 00504 __gthread_objc_mutex_allocate (objc_mutex_t mutex) 00505 { 00506 if (__gthread_active_p ()) 00507 { 00508 mutex->backend = objc_malloc (sizeof (pthread_mutex_t)); 00509 00510 if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, NULL)) 00511 { 00512 objc_free (mutex->backend); 00513 mutex->backend = NULL; 00514 return -1; 00515 } 00516 } 00517 00518 return 0; 00519 } 00520 00521 /* Deallocate a mutex. */ 00522 static inline int 00523 __gthread_objc_mutex_deallocate (objc_mutex_t mutex) 00524 { 00525 if (__gthread_active_p ()) 00526 { 00527 int count; 00528 00529 /* 00530 * Posix Threads specifically require that the thread be unlocked 00531 * for __gthrw_(pthread_mutex_destroy) to work. 00532 */ 00533 00534 do 00535 { 00536 count = __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend); 00537 if (count < 0) 00538 return -1; 00539 } 00540 while (count); 00541 00542 if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend)) 00543 return -1; 00544 00545 objc_free (mutex->backend); 00546 mutex->backend = NULL; 00547 } 00548 return 0; 00549 } 00550 00551 /* Grab a lock on a mutex. */ 00552 static inline int 00553 __gthread_objc_mutex_lock (objc_mutex_t mutex) 00554 { 00555 if (__gthread_active_p () 00556 && __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend) != 0) 00557 { 00558 return -1; 00559 } 00560 00561 return 0; 00562 } 00563 00564 /* Try to grab a lock on a mutex. */ 00565 static inline int 00566 __gthread_objc_mutex_trylock (objc_mutex_t mutex) 00567 { 00568 if (__gthread_active_p () 00569 && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 0) 00570 { 00571 return -1; 00572 } 00573 00574 return 0; 00575 } 00576 00577 /* Unlock the mutex */ 00578 static inline int 00579 __gthread_objc_mutex_unlock (objc_mutex_t mutex) 00580 { 00581 if (__gthread_active_p () 00582 && __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend) != 0) 00583 { 00584 return -1; 00585 } 00586 00587 return 0; 00588 } 00589 00590 /* Backend condition mutex functions */ 00591 00592 /* Allocate a condition. */ 00593 static inline int 00594 __gthread_objc_condition_allocate (objc_condition_t condition) 00595 { 00596 if (__gthread_active_p ()) 00597 { 00598 condition->backend = objc_malloc (sizeof (pthread_cond_t)); 00599 00600 if (__gthrw_(pthread_cond_init) ((pthread_cond_t *) condition->backend, NULL)) 00601 { 00602 objc_free (condition->backend); 00603 condition->backend = NULL; 00604 return -1; 00605 } 00606 } 00607 00608 return 0; 00609 } 00610 00611 /* Deallocate a condition. */ 00612 static inline int 00613 __gthread_objc_condition_deallocate (objc_condition_t condition) 00614 { 00615 if (__gthread_active_p ()) 00616 { 00617 if (__gthrw_(pthread_cond_destroy) ((pthread_cond_t *) condition->backend)) 00618 return -1; 00619 00620 objc_free (condition->backend); 00621 condition->backend = NULL; 00622 } 00623 return 0; 00624 } 00625 00626 /* Wait on the condition */ 00627 static inline int 00628 __gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex) 00629 { 00630 if (__gthread_active_p ()) 00631 return __gthrw_(pthread_cond_wait) ((pthread_cond_t *) condition->backend, 00632 (pthread_mutex_t *) mutex->backend); 00633 else 00634 return 0; 00635 } 00636 00637 /* Wake up all threads waiting on this condition. */ 00638 static inline int 00639 __gthread_objc_condition_broadcast (objc_condition_t condition) 00640 { 00641 if (__gthread_active_p ()) 00642 return __gthrw_(pthread_cond_broadcast) ((pthread_cond_t *) condition->backend); 00643 else 00644 return 0; 00645 } 00646 00647 /* Wake up one thread waiting on this condition. */ 00648 static inline int 00649 __gthread_objc_condition_signal (objc_condition_t condition) 00650 { 00651 if (__gthread_active_p ()) 00652 return __gthrw_(pthread_cond_signal) ((pthread_cond_t *) condition->backend); 00653 else 00654 return 0; 00655 } 00656 00657 #else /* _LIBOBJC */ 00658 00659 static inline int 00660 __gthread_create (__gthread_t *__threadid, void *(*__func) (void*), 00661 void *__args) 00662 { 00663 return __gthrw_(pthread_create) (__threadid, NULL, __func, __args); 00664 } 00665 00666 static inline int 00667 __gthread_join (__gthread_t __threadid, void **__value_ptr) 00668 { 00669 return __gthrw_(pthread_join) (__threadid, __value_ptr); 00670 } 00671 00672 static inline int 00673 __gthread_detach (__gthread_t __threadid) 00674 { 00675 return __gthrw_(pthread_detach) (__threadid); 00676 } 00677 00678 static inline int 00679 __gthread_equal (__gthread_t __t1, __gthread_t __t2) 00680 { 00681 return __gthrw_(pthread_equal) (__t1, __t2); 00682 } 00683 00684 static inline __gthread_t 00685 __gthread_self (void) 00686 { 00687 return __gthrw_(pthread_self) (); 00688 } 00689 00690 static inline int 00691 __gthread_yield (void) 00692 { 00693 return __gthrw_(sched_yield) (); 00694 } 00695 00696 static inline int 00697 __gthread_once (__gthread_once_t *__once, void (*__func) (void)) 00698 { 00699 if (__gthread_active_p ()) 00700 return __gthrw_(pthread_once) (__once, __func); 00701 else 00702 return -1; 00703 } 00704 00705 static inline int 00706 __gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) 00707 { 00708 return __gthrw_(pthread_key_create) (__key, __dtor); 00709 } 00710 00711 static inline int 00712 __gthread_key_delete (__gthread_key_t __key) 00713 { 00714 return __gthrw_(pthread_key_delete) (__key); 00715 } 00716 00717 static inline void * 00718 __gthread_getspecific (__gthread_key_t __key) 00719 { 00720 return __gthrw_(pthread_getspecific) (__key); 00721 } 00722 00723 static inline int 00724 __gthread_setspecific (__gthread_key_t __key, const void *__ptr) 00725 { 00726 return __gthrw_(pthread_setspecific) (__key, __ptr); 00727 } 00728 00729 static inline int 00730 __gthread_mutex_destroy (__gthread_mutex_t *__mutex) 00731 { 00732 if (__gthread_active_p ()) 00733 return __gthrw_(pthread_mutex_destroy) (__mutex); 00734 else 00735 return 0; 00736 } 00737 00738 static inline int 00739 __gthread_mutex_lock (__gthread_mutex_t *__mutex) 00740 { 00741 if (__gthread_active_p ()) 00742 return __gthrw_(pthread_mutex_lock) (__mutex); 00743 else 00744 return 0; 00745 } 00746 00747 static inline int 00748 __gthread_mutex_trylock (__gthread_mutex_t *__mutex) 00749 { 00750 if (__gthread_active_p ()) 00751 return __gthrw_(pthread_mutex_trylock) (__mutex); 00752 else 00753 return 0; 00754 } 00755 00756 #ifdef _POSIX_TIMEOUTS 00757 #if _POSIX_TIMEOUTS >= 0 00758 static inline int 00759 __gthread_mutex_timedlock (__gthread_mutex_t *__mutex, 00760 const __gthread_time_t *__abs_timeout) 00761 { 00762 if (__gthread_active_p ()) 00763 return __gthrw_(pthread_mutex_timedlock) (__mutex, __abs_timeout); 00764 else 00765 return 0; 00766 } 00767 #endif 00768 #endif 00769 00770 static inline int 00771 __gthread_mutex_unlock (__gthread_mutex_t *__mutex) 00772 { 00773 if (__gthread_active_p ()) 00774 return __gthrw_(pthread_mutex_unlock) (__mutex); 00775 else 00776 return 0; 00777 } 00778 00779 #ifndef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP 00780 static inline int 00781 __gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) 00782 { 00783 if (__gthread_active_p ()) 00784 { 00785 pthread_mutexattr_t __attr; 00786 int __r; 00787 00788 __r = __gthrw_(pthread_mutexattr_init) (&__attr); 00789 if (!__r) 00790 __r = __gthrw_(pthread_mutexattr_settype) (&__attr, 00791 PTHREAD_MUTEX_RECURSIVE); 00792 if (!__r) 00793 __r = __gthrw_(pthread_mutex_init) (__mutex, &__attr); 00794 if (!__r) 00795 __r = __gthrw_(pthread_mutexattr_destroy) (&__attr); 00796 return __r; 00797 } 00798 return 0; 00799 } 00800 #endif 00801 00802 static inline int 00803 __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) 00804 { 00805 return __gthread_mutex_lock (__mutex); 00806 } 00807 00808 static inline int 00809 __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) 00810 { 00811 return __gthread_mutex_trylock (__mutex); 00812 } 00813 00814 #ifdef _POSIX_TIMEOUTS 00815 #if _POSIX_TIMEOUTS >= 0 00816 static inline int 00817 __gthread_recursive_mutex_timedlock (__gthread_recursive_mutex_t *__mutex, 00818 const __gthread_time_t *__abs_timeout) 00819 { 00820 return __gthread_mutex_timedlock (__mutex, __abs_timeout); 00821 } 00822 #endif 00823 #endif 00824 00825 static inline int 00826 __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) 00827 { 00828 return __gthread_mutex_unlock (__mutex); 00829 } 00830 00831 static inline int 00832 __gthread_cond_broadcast (__gthread_cond_t *__cond) 00833 { 00834 return __gthrw_(pthread_cond_broadcast) (__cond); 00835 } 00836 00837 static inline int 00838 __gthread_cond_signal (__gthread_cond_t *__cond) 00839 { 00840 return __gthrw_(pthread_cond_signal) (__cond); 00841 } 00842 00843 static inline int 00844 __gthread_cond_wait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex) 00845 { 00846 return __gthrw_(pthread_cond_wait) (__cond, __mutex); 00847 } 00848 00849 static inline int 00850 __gthread_cond_timedwait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex, 00851 const __gthread_time_t *__abs_timeout) 00852 { 00853 return __gthrw_(pthread_cond_timedwait) (__cond, __mutex, __abs_timeout); 00854 } 00855 00856 static inline int 00857 __gthread_cond_wait_recursive (__gthread_cond_t *__cond, 00858 __gthread_recursive_mutex_t *__mutex) 00859 { 00860 return __gthread_cond_wait (__cond, __mutex); 00861 } 00862 00863 static inline int 00864 __gthread_cond_timedwait_recursive (__gthread_cond_t *__cond, 00865 __gthread_recursive_mutex_t *__mutex, 00866 const __gthread_time_t *__abs_timeout) 00867 { 00868 return __gthread_cond_timedwait (__cond, __mutex, __abs_timeout); 00869 } 00870 00871 static inline int 00872 __gthread_cond_destroy (__gthread_cond_t* __cond) 00873 { 00874 return __gthrw_(pthread_cond_destroy) (__cond); 00875 } 00876 00877 #endif /* _LIBOBJC */ 00878 00879 #endif /* ! _GLIBCXX_GCC_GTHR_POSIX_H */