Mercurial > hg > CbC > CbC_gcc
annotate gcc/gthr-posix.h @ 56:3c8a44c06a95
Added tag gcc-4.4.5 for changeset 77e2b8dfacca
| author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Fri, 12 Feb 2010 23:41:23 +0900 |
| parents | 77e2b8dfacca |
| children | f6334be47118 |
| rev | line source |
|---|---|
| 0 | 1 /* Threads compatibility routines for libgcc2 and libobjc. */ |
| 2 /* Compile this one with gcc. */ | |
| 3 /* Copyright (C) 1997, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, | |
| 4 2008, 2009 Free Software Foundation, Inc. | |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 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 3, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 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. | |
| 17 | |
| 18 Under Section 7 of GPL version 3, you are granted additional | |
| 19 permissions described in the GCC Runtime Library Exception, version | |
| 20 3.1, as published by the Free Software Foundation. | |
| 21 | |
| 22 You should have received a copy of the GNU General Public License and | |
| 23 a copy of the GCC Runtime Library Exception along with this program; | |
| 24 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 25 <http://www.gnu.org/licenses/>. */ | |
| 26 | |
| 27 #ifndef GCC_GTHR_POSIX_H | |
| 28 #define GCC_GTHR_POSIX_H | |
| 29 | |
| 30 /* POSIX threads specific definitions. | |
| 31 Easy, since the interface is just one-to-one mapping. */ | |
| 32 | |
| 33 #define __GTHREADS 1 | |
| 34 #define __GTHREADS_CXX0X 1 | |
| 35 | |
| 36 /* Some implementations of <pthread.h> require this to be defined. */ | |
| 37 #if !defined(_REENTRANT) && defined(__osf__) | |
| 38 #define _REENTRANT 1 | |
| 39 #endif | |
| 40 | |
| 41 #include <pthread.h> | |
| 42 #include <unistd.h> | |
| 43 | |
| 44 typedef pthread_t __gthread_t; | |
| 45 typedef pthread_key_t __gthread_key_t; | |
| 46 typedef pthread_once_t __gthread_once_t; | |
| 47 typedef pthread_mutex_t __gthread_mutex_t; | |
| 48 typedef pthread_mutex_t __gthread_recursive_mutex_t; | |
| 49 typedef pthread_cond_t __gthread_cond_t; | |
| 50 typedef struct timespec __gthread_time_t; | |
| 51 | |
| 52 /* POSIX like conditional variables are supported. Please look at comments | |
| 53 in gthr.h for details. */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
54 #define __GTHREAD_HAS_COND 1 |
| 0 | 55 |
| 56 #define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER | |
| 57 #define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT | |
| 58 #if defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER) | |
| 59 #define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER | |
| 60 #elif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP) | |
| 61 #define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP | |
| 62 #else | |
| 63 #define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function | |
| 64 #endif | |
| 65 #define __GTHREAD_COND_INIT PTHREAD_COND_INITIALIZER | |
| 66 #define __GTHREAD_TIME_INIT {0,0} | |
| 67 | |
| 68 #if SUPPORTS_WEAK && GTHREAD_USE_WEAK | |
| 69 # ifndef __gthrw_pragma | |
| 70 # define __gthrw_pragma(pragma) | |
| 71 # endif | |
| 72 # define __gthrw2(name,name2,type) \ | |
| 73 static __typeof(type) name __attribute__ ((__weakref__(#name2))); \ | |
| 74 __gthrw_pragma(weak type) | |
| 75 # define __gthrw_(name) __gthrw_ ## name | |
| 76 #else | |
| 77 # define __gthrw2(name,name2,type) | |
| 78 # define __gthrw_(name) name | |
| 79 #endif | |
| 80 | |
| 81 /* Typically, __gthrw_foo is a weak reference to symbol foo. */ | |
| 82 #define __gthrw(name) __gthrw2(__gthrw_ ## name,name,name) | |
| 83 | |
| 84 /* On Tru64, /usr/include/pthread.h uses #pragma extern_prefix "__" to | |
| 85 map a subset of the POSIX pthread API to mangled versions of their | |
| 86 names. */ | |
| 87 #if defined(__osf__) && defined(_PTHREAD_USE_MANGLED_NAMES_) | |
| 88 #define __gthrw3(name) __gthrw2(__gthrw_ ## name, __ ## name, name) | |
| 89 __gthrw3(pthread_once) | |
| 90 __gthrw3(pthread_getspecific) | |
| 91 __gthrw3(pthread_setspecific) | |
| 92 | |
| 93 __gthrw3(pthread_create) | |
| 94 __gthrw3(pthread_join) | |
| 95 __gthrw3(pthread_detach) | |
| 96 __gthrw3(pthread_equal) | |
| 97 __gthrw3(pthread_self) | |
| 98 __gthrw3(pthread_cancel) | |
| 99 __gthrw3(sched_yield) | |
| 100 | |
| 101 __gthrw3(pthread_mutex_lock) | |
| 102 __gthrw3(pthread_mutex_trylock) | |
| 103 #ifdef _POSIX_TIMEOUTS | |
| 104 #if _POSIX_TIMEOUTS >= 0 | |
| 105 __gthrw3(pthread_mutex_timedlock) | |
| 106 #endif | |
| 107 #endif /* _POSIX_TIMEOUTS */ | |
| 108 __gthrw3(pthread_mutex_unlock) | |
| 109 __gthrw3(pthread_mutex_init) | |
| 110 __gthrw3(pthread_mutex_destroy) | |
| 111 | |
| 112 __gthrw3(pthread_cond_broadcast) | |
| 113 __gthrw3(pthread_cond_signal) | |
| 114 __gthrw3(pthread_cond_wait) | |
| 115 __gthrw3(pthread_cond_timedwait) | |
| 116 __gthrw3(pthread_cond_destroy) | |
| 117 #else | |
| 118 __gthrw(pthread_once) | |
| 119 __gthrw(pthread_getspecific) | |
| 120 __gthrw(pthread_setspecific) | |
| 121 | |
| 122 __gthrw(pthread_create) | |
| 123 __gthrw(pthread_join) | |
| 124 __gthrw(pthread_equal) | |
| 125 __gthrw(pthread_self) | |
| 126 __gthrw(pthread_detach) | |
| 127 __gthrw(pthread_cancel) | |
| 128 __gthrw(sched_yield) | |
| 129 | |
| 130 __gthrw(pthread_mutex_lock) | |
| 131 __gthrw(pthread_mutex_trylock) | |
| 132 #ifdef _POSIX_TIMEOUTS | |
| 133 #if _POSIX_TIMEOUTS >= 0 | |
| 134 __gthrw(pthread_mutex_timedlock) | |
| 135 #endif | |
| 136 #endif /* _POSIX_TIMEOUTS */ | |
| 137 __gthrw(pthread_mutex_unlock) | |
| 138 __gthrw(pthread_mutex_init) | |
| 139 __gthrw(pthread_mutex_destroy) | |
| 140 | |
| 141 __gthrw(pthread_cond_broadcast) | |
| 142 __gthrw(pthread_cond_signal) | |
| 143 __gthrw(pthread_cond_wait) | |
| 144 __gthrw(pthread_cond_timedwait) | |
| 145 __gthrw(pthread_cond_destroy) | |
| 146 #endif | |
| 147 | |
| 148 __gthrw(pthread_key_create) | |
| 149 __gthrw(pthread_key_delete) | |
| 150 __gthrw(pthread_mutexattr_init) | |
| 151 __gthrw(pthread_mutexattr_settype) | |
| 152 __gthrw(pthread_mutexattr_destroy) | |
| 153 | |
| 154 | |
| 155 #if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK) | |
| 156 /* Objective-C. */ | |
| 157 #if defined(__osf__) && defined(_PTHREAD_USE_MANGLED_NAMES_) | |
| 158 __gthrw3(pthread_cond_init) | |
| 159 __gthrw3(pthread_exit) | |
| 160 #else | |
| 161 __gthrw(pthread_cond_init) | |
| 162 __gthrw(pthread_exit) | |
| 163 #endif /* __osf__ && _PTHREAD_USE_MANGLED_NAMES_ */ | |
| 164 #ifdef _POSIX_PRIORITY_SCHEDULING | |
| 165 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING | |
| 166 __gthrw(sched_get_priority_max) | |
| 167 __gthrw(sched_get_priority_min) | |
| 168 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ | |
| 169 #endif /* _POSIX_PRIORITY_SCHEDULING */ | |
| 170 __gthrw(pthread_attr_destroy) | |
| 171 __gthrw(pthread_attr_init) | |
| 172 __gthrw(pthread_attr_setdetachstate) | |
| 173 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING | |
| 174 __gthrw(pthread_getschedparam) | |
| 175 __gthrw(pthread_setschedparam) | |
| 176 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ | |
| 177 #endif /* _LIBOBJC || _LIBOBJC_WEAK */ | |
| 178 | |
| 179 #if SUPPORTS_WEAK && GTHREAD_USE_WEAK | |
| 180 | |
| 181 /* On Solaris 2.6 up to 9, the libc exposes a POSIX threads interface even if | |
| 182 -pthreads is not specified. The functions are dummies and most return an | |
| 183 error value. However pthread_once returns 0 without invoking the routine | |
| 184 it is passed so we cannot pretend that the interface is active if -pthreads | |
| 185 is not specified. On Solaris 2.5.1, the interface is not exposed at all so | |
| 186 we need to play the usual game with weak symbols. On Solaris 10 and up, a | |
| 187 working interface is always exposed. On FreeBSD 6 and later, libc also | |
| 188 exposes a dummy POSIX threads interface, similar to what Solaris 2.6 up | |
| 189 to 9 does. FreeBSD >= 700014 even provides a pthread_cancel stub in libc, | |
| 190 which means the alternate __gthread_active_p below cannot be used there. */ | |
| 191 | |
| 192 #if defined(__FreeBSD__) || (defined(__sun) && defined(__svr4__)) | |
| 193 | |
| 194 static volatile int __gthread_active = -1; | |
| 195 | |
| 196 static void | |
| 197 __gthread_trigger (void) | |
| 198 { | |
| 199 __gthread_active = 1; | |
| 200 } | |
| 201 | |
| 202 static inline int | |
| 203 __gthread_active_p (void) | |
| 204 { | |
| 205 static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER; | |
| 206 static pthread_once_t __gthread_active_once = PTHREAD_ONCE_INIT; | |
| 207 | |
| 208 /* Avoid reading __gthread_active twice on the main code path. */ | |
| 209 int __gthread_active_latest_value = __gthread_active; | |
| 210 | |
| 211 /* This test is not protected to avoid taking a lock on the main code | |
| 212 path so every update of __gthread_active in a threaded program must | |
| 213 be atomic with regard to the result of the test. */ | |
| 214 if (__builtin_expect (__gthread_active_latest_value < 0, 0)) | |
| 215 { | |
| 216 if (__gthrw_(pthread_once)) | |
| 217 { | |
| 218 /* If this really is a threaded program, then we must ensure that | |
| 219 __gthread_active has been set to 1 before exiting this block. */ | |
| 220 __gthrw_(pthread_mutex_lock) (&__gthread_active_mutex); | |
| 221 __gthrw_(pthread_once) (&__gthread_active_once, __gthread_trigger); | |
| 222 __gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex); | |
| 223 } | |
| 224 | |
| 225 /* Make sure we'll never enter this block again. */ | |
| 226 if (__gthread_active < 0) | |
| 227 __gthread_active = 0; | |
| 228 | |
| 229 __gthread_active_latest_value = __gthread_active; | |
| 230 } | |
| 231 | |
| 232 return __gthread_active_latest_value != 0; | |
| 233 } | |
| 234 | |
| 235 #else /* neither FreeBSD nor Solaris */ | |
| 236 | |
| 237 static inline int | |
| 238 __gthread_active_p (void) | |
| 239 { | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
240 static void *const __gthread_active_ptr |
| 0 | 241 = __extension__ (void *) &__gthrw_(pthread_cancel); |
| 242 return __gthread_active_ptr != 0; | |
| 243 } | |
| 244 | |
| 245 #endif /* FreeBSD or Solaris */ | |
| 246 | |
| 247 #else /* not SUPPORTS_WEAK */ | |
| 248 | |
| 249 /* Similar to Solaris, HP-UX 11 for PA-RISC provides stubs for pthread | |
| 250 calls in shared flavors of the HP-UX C library. Most of the stubs | |
| 251 have no functionality. The details are described in the "libc cumulative | |
| 252 patch" for each subversion of HP-UX 11. There are two special interfaces | |
| 253 provided for checking whether an application is linked to a pthread | |
| 254 library or not. However, these interfaces aren't available in early | |
| 255 libc versions. We also can't use pthread_once as some libc versions | |
| 256 call the init function. So, we use pthread_create to check whether it | |
| 257 is possible to create a thread or not. The stub implementation returns | |
| 258 the error number ENOSYS. */ | |
| 259 | |
| 260 #if defined(__hppa__) && defined(__hpux__) | |
| 261 | |
| 262 #include <errno.h> | |
| 263 | |
| 264 static volatile int __gthread_active = -1; | |
| 265 | |
| 266 static void * | |
| 267 __gthread_start (void *__arg __attribute__((unused))) | |
| 268 { | |
| 269 return NULL; | |
| 270 } | |
| 271 | |
| 272 static void __gthread_active_init (void) __attribute__((noinline)); | |
| 273 static void | |
| 274 __gthread_active_init (void) | |
| 275 { | |
| 276 static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER; | |
| 277 pthread_t __t; | |
| 278 pthread_attr_t __a; | |
| 279 int __result; | |
| 280 | |
| 281 __gthrw_(pthread_mutex_lock) (&__gthread_active_mutex); | |
| 282 if (__gthread_active < 0) | |
| 283 { | |
| 284 __gthrw_(pthread_attr_init) (&__a); | |
| 285 __gthrw_(pthread_attr_setdetachstate) (&__a, PTHREAD_CREATE_DETACHED); | |
| 286 __result = __gthrw_(pthread_create) (&__t, &__a, __gthread_start, NULL); | |
| 287 if (__result != ENOSYS) | |
| 288 __gthread_active = 1; | |
| 289 else | |
| 290 __gthread_active = 0; | |
| 291 __gthrw_(pthread_attr_destroy) (&__a); | |
| 292 } | |
| 293 __gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex); | |
| 294 } | |
| 295 | |
| 296 static inline int | |
| 297 __gthread_active_p (void) | |
| 298 { | |
| 299 /* Avoid reading __gthread_active twice on the main code path. */ | |
| 300 int __gthread_active_latest_value = __gthread_active; | |
| 301 | |
| 302 /* This test is not protected to avoid taking a lock on the main code | |
| 303 path so every update of __gthread_active in a threaded program must | |
| 304 be atomic with regard to the result of the test. */ | |
| 305 if (__builtin_expect (__gthread_active_latest_value < 0, 0)) | |
| 306 { | |
| 307 __gthread_active_init (); | |
| 308 __gthread_active_latest_value = __gthread_active; | |
| 309 } | |
| 310 | |
| 311 return __gthread_active_latest_value != 0; | |
| 312 } | |
| 313 | |
| 314 #else /* not hppa-hpux */ | |
| 315 | |
| 316 static inline int | |
| 317 __gthread_active_p (void) | |
| 318 { | |
| 319 return 1; | |
| 320 } | |
| 321 | |
| 322 #endif /* hppa-hpux */ | |
| 323 | |
| 324 #endif /* SUPPORTS_WEAK */ | |
| 325 | |
| 326 #ifdef _LIBOBJC | |
| 327 | |
| 328 /* This is the config.h file in libobjc/ */ | |
| 329 #include <config.h> | |
| 330 | |
| 331 #ifdef HAVE_SCHED_H | |
| 332 # include <sched.h> | |
| 333 #endif | |
| 334 | |
| 335 /* Key structure for maintaining thread specific storage */ | |
| 336 static pthread_key_t _objc_thread_storage; | |
| 337 static pthread_attr_t _objc_thread_attribs; | |
| 338 | |
| 339 /* Thread local storage for a single thread */ | |
| 340 static void *thread_local_storage = NULL; | |
| 341 | |
| 342 /* Backend initialization functions */ | |
| 343 | |
| 344 /* Initialize the threads subsystem. */ | |
| 345 static inline int | |
| 346 __gthread_objc_init_thread_system (void) | |
| 347 { | |
| 348 if (__gthread_active_p ()) | |
| 349 { | |
| 350 /* Initialize the thread storage key. */ | |
| 351 if (__gthrw_(pthread_key_create) (&_objc_thread_storage, NULL) == 0) | |
| 352 { | |
| 353 /* The normal default detach state for threads is | |
| 354 * PTHREAD_CREATE_JOINABLE which causes threads to not die | |
| 355 * when you think they should. */ | |
| 356 if (__gthrw_(pthread_attr_init) (&_objc_thread_attribs) == 0 | |
| 357 && __gthrw_(pthread_attr_setdetachstate) (&_objc_thread_attribs, | |
| 358 PTHREAD_CREATE_DETACHED) == 0) | |
| 359 return 0; | |
| 360 } | |
| 361 } | |
| 362 | |
| 363 return -1; | |
| 364 } | |
| 365 | |
| 366 /* Close the threads subsystem. */ | |
| 367 static inline int | |
| 368 __gthread_objc_close_thread_system (void) | |
| 369 { | |
| 370 if (__gthread_active_p () | |
| 371 && __gthrw_(pthread_key_delete) (_objc_thread_storage) == 0 | |
| 372 && __gthrw_(pthread_attr_destroy) (&_objc_thread_attribs) == 0) | |
| 373 return 0; | |
| 374 | |
| 375 return -1; | |
| 376 } | |
| 377 | |
| 378 /* Backend thread functions */ | |
| 379 | |
| 380 /* Create a new thread of execution. */ | |
| 381 static inline objc_thread_t | |
| 382 __gthread_objc_thread_detach (void (*func)(void *), void *arg) | |
| 383 { | |
| 384 objc_thread_t thread_id; | |
| 385 pthread_t new_thread_handle; | |
| 386 | |
| 387 if (!__gthread_active_p ()) | |
| 388 return NULL; | |
| 389 | |
| 390 if (!(__gthrw_(pthread_create) (&new_thread_handle, NULL, (void *) func, arg))) | |
| 391 thread_id = (objc_thread_t) new_thread_handle; | |
| 392 else | |
| 393 thread_id = NULL; | |
| 394 | |
| 395 return thread_id; | |
| 396 } | |
| 397 | |
| 398 /* Set the current thread's priority. */ | |
| 399 static inline int | |
| 400 __gthread_objc_thread_set_priority (int priority) | |
| 401 { | |
| 402 if (!__gthread_active_p ()) | |
| 403 return -1; | |
| 404 else | |
| 405 { | |
| 406 #ifdef _POSIX_PRIORITY_SCHEDULING | |
| 407 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING | |
| 408 pthread_t thread_id = __gthrw_(pthread_self) (); | |
| 409 int policy; | |
| 410 struct sched_param params; | |
| 411 int priority_min, priority_max; | |
| 412 | |
| 413 if (__gthrw_(pthread_getschedparam) (thread_id, &policy, ¶ms) == 0) | |
| 414 { | |
| 415 if ((priority_max = __gthrw_(sched_get_priority_max) (policy)) == -1) | |
| 416 return -1; | |
| 417 | |
| 418 if ((priority_min = __gthrw_(sched_get_priority_min) (policy)) == -1) | |
| 419 return -1; | |
| 420 | |
| 421 if (priority > priority_max) | |
| 422 priority = priority_max; | |
| 423 else if (priority < priority_min) | |
| 424 priority = priority_min; | |
| 425 params.sched_priority = priority; | |
| 426 | |
| 427 /* | |
| 428 * The solaris 7 and several other man pages incorrectly state that | |
| 429 * this should be a pointer to policy but pthread.h is universally | |
| 430 * at odds with this. | |
| 431 */ | |
| 432 if (__gthrw_(pthread_setschedparam) (thread_id, policy, ¶ms) == 0) | |
| 433 return 0; | |
| 434 } | |
| 435 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ | |
| 436 #endif /* _POSIX_PRIORITY_SCHEDULING */ | |
| 437 return -1; | |
| 438 } | |
| 439 } | |
| 440 | |
| 441 /* Return the current thread's priority. */ | |
| 442 static inline int | |
| 443 __gthread_objc_thread_get_priority (void) | |
| 444 { | |
| 445 #ifdef _POSIX_PRIORITY_SCHEDULING | |
| 446 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING | |
| 447 if (__gthread_active_p ()) | |
| 448 { | |
| 449 int policy; | |
| 450 struct sched_param params; | |
| 451 | |
| 452 if (__gthrw_(pthread_getschedparam) (__gthrw_(pthread_self) (), &policy, ¶ms) == 0) | |
| 453 return params.sched_priority; | |
| 454 else | |
| 455 return -1; | |
| 456 } | |
| 457 else | |
| 458 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ | |
| 459 #endif /* _POSIX_PRIORITY_SCHEDULING */ | |
| 460 return OBJC_THREAD_INTERACTIVE_PRIORITY; | |
| 461 } | |
| 462 | |
| 463 /* Yield our process time to another thread. */ | |
| 464 static inline void | |
| 465 __gthread_objc_thread_yield (void) | |
| 466 { | |
| 467 if (__gthread_active_p ()) | |
| 468 __gthrw_(sched_yield) (); | |
| 469 } | |
| 470 | |
| 471 /* Terminate the current thread. */ | |
| 472 static inline int | |
| 473 __gthread_objc_thread_exit (void) | |
| 474 { | |
| 475 if (__gthread_active_p ()) | |
| 476 /* exit the thread */ | |
| 477 __gthrw_(pthread_exit) (&__objc_thread_exit_status); | |
| 478 | |
| 479 /* Failed if we reached here */ | |
| 480 return -1; | |
| 481 } | |
| 482 | |
| 483 /* Returns an integer value which uniquely describes a thread. */ | |
| 484 static inline objc_thread_t | |
| 485 __gthread_objc_thread_id (void) | |
| 486 { | |
| 487 if (__gthread_active_p ()) | |
| 488 return (objc_thread_t) __gthrw_(pthread_self) (); | |
| 489 else | |
| 490 return (objc_thread_t) 1; | |
| 491 } | |
| 492 | |
| 493 /* Sets the thread's local storage pointer. */ | |
| 494 static inline int | |
| 495 __gthread_objc_thread_set_data (void *value) | |
| 496 { | |
| 497 if (__gthread_active_p ()) | |
| 498 return __gthrw_(pthread_setspecific) (_objc_thread_storage, value); | |
| 499 else | |
| 500 { | |
| 501 thread_local_storage = value; | |
| 502 return 0; | |
| 503 } | |
| 504 } | |
| 505 | |
| 506 /* Returns the thread's local storage pointer. */ | |
| 507 static inline void * | |
| 508 __gthread_objc_thread_get_data (void) | |
| 509 { | |
| 510 if (__gthread_active_p ()) | |
| 511 return __gthrw_(pthread_getspecific) (_objc_thread_storage); | |
| 512 else | |
| 513 return thread_local_storage; | |
| 514 } | |
| 515 | |
| 516 /* Backend mutex functions */ | |
| 517 | |
| 518 /* Allocate a mutex. */ | |
| 519 static inline int | |
| 520 __gthread_objc_mutex_allocate (objc_mutex_t mutex) | |
| 521 { | |
| 522 if (__gthread_active_p ()) | |
| 523 { | |
| 524 mutex->backend = objc_malloc (sizeof (pthread_mutex_t)); | |
| 525 | |
| 526 if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, NULL)) | |
| 527 { | |
| 528 objc_free (mutex->backend); | |
| 529 mutex->backend = NULL; | |
| 530 return -1; | |
| 531 } | |
| 532 } | |
| 533 | |
| 534 return 0; | |
| 535 } | |
| 536 | |
| 537 /* Deallocate a mutex. */ | |
| 538 static inline int | |
| 539 __gthread_objc_mutex_deallocate (objc_mutex_t mutex) | |
| 540 { | |
| 541 if (__gthread_active_p ()) | |
| 542 { | |
| 543 int count; | |
| 544 | |
| 545 /* | |
| 546 * Posix Threads specifically require that the thread be unlocked | |
| 547 * for __gthrw_(pthread_mutex_destroy) to work. | |
| 548 */ | |
| 549 | |
| 550 do | |
| 551 { | |
| 552 count = __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend); | |
| 553 if (count < 0) | |
| 554 return -1; | |
| 555 } | |
| 556 while (count); | |
| 557 | |
| 558 if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend)) | |
| 559 return -1; | |
| 560 | |
| 561 objc_free (mutex->backend); | |
| 562 mutex->backend = NULL; | |
| 563 } | |
| 564 return 0; | |
| 565 } | |
| 566 | |
| 567 /* Grab a lock on a mutex. */ | |
| 568 static inline int | |
| 569 __gthread_objc_mutex_lock (objc_mutex_t mutex) | |
| 570 { | |
| 571 if (__gthread_active_p () | |
| 572 && __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend) != 0) | |
| 573 { | |
| 574 return -1; | |
| 575 } | |
| 576 | |
| 577 return 0; | |
| 578 } | |
| 579 | |
| 580 /* Try to grab a lock on a mutex. */ | |
| 581 static inline int | |
| 582 __gthread_objc_mutex_trylock (objc_mutex_t mutex) | |
| 583 { | |
| 584 if (__gthread_active_p () | |
| 585 && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 0) | |
| 586 { | |
| 587 return -1; | |
| 588 } | |
| 589 | |
| 590 return 0; | |
| 591 } | |
| 592 | |
| 593 /* Unlock the mutex */ | |
| 594 static inline int | |
| 595 __gthread_objc_mutex_unlock (objc_mutex_t mutex) | |
| 596 { | |
| 597 if (__gthread_active_p () | |
| 598 && __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend) != 0) | |
| 599 { | |
| 600 return -1; | |
| 601 } | |
| 602 | |
| 603 return 0; | |
| 604 } | |
| 605 | |
| 606 /* Backend condition mutex functions */ | |
| 607 | |
| 608 /* Allocate a condition. */ | |
| 609 static inline int | |
| 610 __gthread_objc_condition_allocate (objc_condition_t condition) | |
| 611 { | |
| 612 if (__gthread_active_p ()) | |
| 613 { | |
| 614 condition->backend = objc_malloc (sizeof (pthread_cond_t)); | |
| 615 | |
| 616 if (__gthrw_(pthread_cond_init) ((pthread_cond_t *) condition->backend, NULL)) | |
| 617 { | |
| 618 objc_free (condition->backend); | |
| 619 condition->backend = NULL; | |
| 620 return -1; | |
| 621 } | |
| 622 } | |
| 623 | |
| 624 return 0; | |
| 625 } | |
| 626 | |
| 627 /* Deallocate a condition. */ | |
| 628 static inline int | |
| 629 __gthread_objc_condition_deallocate (objc_condition_t condition) | |
| 630 { | |
| 631 if (__gthread_active_p ()) | |
| 632 { | |
| 633 if (__gthrw_(pthread_cond_destroy) ((pthread_cond_t *) condition->backend)) | |
| 634 return -1; | |
| 635 | |
| 636 objc_free (condition->backend); | |
| 637 condition->backend = NULL; | |
| 638 } | |
| 639 return 0; | |
| 640 } | |
| 641 | |
| 642 /* Wait on the condition */ | |
| 643 static inline int | |
| 644 __gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex) | |
| 645 { | |
| 646 if (__gthread_active_p ()) | |
| 647 return __gthrw_(pthread_cond_wait) ((pthread_cond_t *) condition->backend, | |
| 648 (pthread_mutex_t *) mutex->backend); | |
| 649 else | |
| 650 return 0; | |
| 651 } | |
| 652 | |
| 653 /* Wake up all threads waiting on this condition. */ | |
| 654 static inline int | |
| 655 __gthread_objc_condition_broadcast (objc_condition_t condition) | |
| 656 { | |
| 657 if (__gthread_active_p ()) | |
| 658 return __gthrw_(pthread_cond_broadcast) ((pthread_cond_t *) condition->backend); | |
| 659 else | |
| 660 return 0; | |
| 661 } | |
| 662 | |
| 663 /* Wake up one thread waiting on this condition. */ | |
| 664 static inline int | |
| 665 __gthread_objc_condition_signal (objc_condition_t condition) | |
| 666 { | |
| 667 if (__gthread_active_p ()) | |
| 668 return __gthrw_(pthread_cond_signal) ((pthread_cond_t *) condition->backend); | |
| 669 else | |
| 670 return 0; | |
| 671 } | |
| 672 | |
| 673 #else /* _LIBOBJC */ | |
| 674 | |
| 675 static inline int | |
| 676 __gthread_create (__gthread_t *__threadid, void *(*__func) (void*), | |
| 677 void *__args) | |
| 678 { | |
| 679 return __gthrw_(pthread_create) (__threadid, NULL, __func, __args); | |
| 680 } | |
| 681 | |
| 682 static inline int | |
| 683 __gthread_join (__gthread_t __threadid, void **__value_ptr) | |
| 684 { | |
| 685 return __gthrw_(pthread_join) (__threadid, __value_ptr); | |
| 686 } | |
| 687 | |
| 688 static inline int | |
| 689 __gthread_detach (__gthread_t __threadid) | |
| 690 { | |
| 691 return __gthrw_(pthread_detach) (__threadid); | |
| 692 } | |
| 693 | |
| 694 static inline int | |
| 695 __gthread_equal (__gthread_t __t1, __gthread_t __t2) | |
| 696 { | |
| 697 return __gthrw_(pthread_equal) (__t1, __t2); | |
| 698 } | |
| 699 | |
| 700 static inline __gthread_t | |
| 701 __gthread_self (void) | |
| 702 { | |
| 703 return __gthrw_(pthread_self) (); | |
| 704 } | |
| 705 | |
| 706 static inline int | |
| 707 __gthread_yield (void) | |
| 708 { | |
| 709 return __gthrw_(sched_yield) (); | |
| 710 } | |
| 711 | |
| 712 static inline int | |
| 713 __gthread_once (__gthread_once_t *__once, void (*__func) (void)) | |
| 714 { | |
| 715 if (__gthread_active_p ()) | |
| 716 return __gthrw_(pthread_once) (__once, __func); | |
| 717 else | |
| 718 return -1; | |
| 719 } | |
| 720 | |
| 721 static inline int | |
| 722 __gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) | |
| 723 { | |
| 724 return __gthrw_(pthread_key_create) (__key, __dtor); | |
| 725 } | |
| 726 | |
| 727 static inline int | |
| 728 __gthread_key_delete (__gthread_key_t __key) | |
| 729 { | |
| 730 return __gthrw_(pthread_key_delete) (__key); | |
| 731 } | |
| 732 | |
| 733 static inline void * | |
| 734 __gthread_getspecific (__gthread_key_t __key) | |
| 735 { | |
| 736 return __gthrw_(pthread_getspecific) (__key); | |
| 737 } | |
| 738 | |
| 739 static inline int | |
| 740 __gthread_setspecific (__gthread_key_t __key, const void *__ptr) | |
| 741 { | |
| 742 return __gthrw_(pthread_setspecific) (__key, __ptr); | |
| 743 } | |
| 744 | |
| 745 static inline int | |
| 746 __gthread_mutex_destroy (__gthread_mutex_t *__mutex) | |
| 747 { | |
| 748 if (__gthread_active_p ()) | |
| 749 return __gthrw_(pthread_mutex_destroy) (__mutex); | |
| 750 else | |
| 751 return 0; | |
| 752 } | |
| 753 | |
| 754 static inline int | |
| 755 __gthread_mutex_lock (__gthread_mutex_t *__mutex) | |
| 756 { | |
| 757 if (__gthread_active_p ()) | |
| 758 return __gthrw_(pthread_mutex_lock) (__mutex); | |
| 759 else | |
| 760 return 0; | |
| 761 } | |
| 762 | |
| 763 static inline int | |
| 764 __gthread_mutex_trylock (__gthread_mutex_t *__mutex) | |
| 765 { | |
| 766 if (__gthread_active_p ()) | |
| 767 return __gthrw_(pthread_mutex_trylock) (__mutex); | |
| 768 else | |
| 769 return 0; | |
| 770 } | |
| 771 | |
| 772 #ifdef _POSIX_TIMEOUTS | |
| 773 #if _POSIX_TIMEOUTS >= 0 | |
| 774 static inline int | |
| 775 __gthread_mutex_timedlock (__gthread_mutex_t *__mutex, | |
| 776 const __gthread_time_t *__abs_timeout) | |
| 777 { | |
| 778 if (__gthread_active_p ()) | |
| 779 return __gthrw_(pthread_mutex_timedlock) (__mutex, __abs_timeout); | |
| 780 else | |
| 781 return 0; | |
| 782 } | |
| 783 #endif | |
| 784 #endif | |
| 785 | |
| 786 static inline int | |
| 787 __gthread_mutex_unlock (__gthread_mutex_t *__mutex) | |
| 788 { | |
| 789 if (__gthread_active_p ()) | |
| 790 return __gthrw_(pthread_mutex_unlock) (__mutex); | |
| 791 else | |
| 792 return 0; | |
| 793 } | |
| 794 | |
| 795 #ifndef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP | |
| 796 static inline int | |
| 797 __gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) | |
| 798 { | |
| 799 if (__gthread_active_p ()) | |
| 800 { | |
| 801 pthread_mutexattr_t __attr; | |
| 802 int __r; | |
| 803 | |
| 804 __r = __gthrw_(pthread_mutexattr_init) (&__attr); | |
| 805 if (!__r) | |
| 806 __r = __gthrw_(pthread_mutexattr_settype) (&__attr, | |
| 807 PTHREAD_MUTEX_RECURSIVE); | |
| 808 if (!__r) | |
| 809 __r = __gthrw_(pthread_mutex_init) (__mutex, &__attr); | |
| 810 if (!__r) | |
| 811 __r = __gthrw_(pthread_mutexattr_destroy) (&__attr); | |
| 812 return __r; | |
| 813 } | |
| 814 return 0; | |
| 815 } | |
| 816 #endif | |
| 817 | |
| 818 static inline int | |
| 819 __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) | |
| 820 { | |
| 821 return __gthread_mutex_lock (__mutex); | |
| 822 } | |
| 823 | |
| 824 static inline int | |
| 825 __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) | |
| 826 { | |
| 827 return __gthread_mutex_trylock (__mutex); | |
| 828 } | |
| 829 | |
| 830 #ifdef _POSIX_TIMEOUTS | |
| 831 #if _POSIX_TIMEOUTS >= 0 | |
| 832 static inline int | |
| 833 __gthread_recursive_mutex_timedlock (__gthread_recursive_mutex_t *__mutex, | |
| 834 const __gthread_time_t *__abs_timeout) | |
| 835 { | |
| 836 return __gthread_mutex_timedlock (__mutex, __abs_timeout); | |
| 837 } | |
| 838 #endif | |
| 839 #endif | |
| 840 | |
| 841 static inline int | |
| 842 __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) | |
| 843 { | |
| 844 return __gthread_mutex_unlock (__mutex); | |
| 845 } | |
| 846 | |
| 847 static inline int | |
| 848 __gthread_cond_broadcast (__gthread_cond_t *__cond) | |
| 849 { | |
| 850 return __gthrw_(pthread_cond_broadcast) (__cond); | |
| 851 } | |
| 852 | |
| 853 static inline int | |
| 854 __gthread_cond_signal (__gthread_cond_t *__cond) | |
| 855 { | |
| 856 return __gthrw_(pthread_cond_signal) (__cond); | |
| 857 } | |
| 858 | |
| 859 static inline int | |
| 860 __gthread_cond_wait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex) | |
| 861 { | |
| 862 return __gthrw_(pthread_cond_wait) (__cond, __mutex); | |
| 863 } | |
| 864 | |
| 865 static inline int | |
| 866 __gthread_cond_timedwait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex, | |
| 867 const __gthread_time_t *__abs_timeout) | |
| 868 { | |
| 869 return __gthrw_(pthread_cond_timedwait) (__cond, __mutex, __abs_timeout); | |
| 870 } | |
| 871 | |
| 872 static inline int | |
| 873 __gthread_cond_wait_recursive (__gthread_cond_t *__cond, | |
| 874 __gthread_recursive_mutex_t *__mutex) | |
| 875 { | |
| 876 return __gthread_cond_wait (__cond, __mutex); | |
| 877 } | |
| 878 | |
| 879 static inline int | |
| 880 __gthread_cond_timedwait_recursive (__gthread_cond_t *__cond, | |
| 881 __gthread_recursive_mutex_t *__mutex, | |
| 882 const __gthread_time_t *__abs_timeout) | |
| 883 { | |
| 884 return __gthread_cond_timedwait (__cond, __mutex, __abs_timeout); | |
| 885 } | |
| 886 | |
| 887 static inline int | |
| 888 __gthread_cond_destroy (__gthread_cond_t* __cond) | |
| 889 { | |
| 890 return __gthrw_(pthread_cond_destroy) (__cond); | |
| 891 } | |
| 892 | |
| 893 #endif /* _LIBOBJC */ | |
| 894 | |
| 895 #endif /* ! GCC_GTHR_POSIX_H */ |