Mercurial > hg > CbC > CbC_gcc
annotate gcc/gthr-posix95.h @ 67:f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
| author | nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Tue, 22 Mar 2011 17:18:12 +0900 |
| parents | 77e2b8dfacca |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* Threads compatibility routines for libgcc2 and libobjc. */ |
| 2 /* Compile this one with gcc. */ | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
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changeset
|
3 /* Copyright (C) 2004, 2005, 2007, 2008, 2009, 2010 |
|
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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4 Free Software Foundation, Inc. |
| 0 | 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 | |
| 35 /* Some implementations of <pthread.h> require this to be defined. */ | |
| 36 #ifndef _REENTRANT | |
| 37 #define _REENTRANT 1 | |
| 38 #endif | |
| 39 | |
| 40 #include <pthread.h> | |
| 41 #include <unistd.h> | |
| 42 | |
| 43 typedef pthread_key_t __gthread_key_t; | |
| 44 typedef pthread_once_t __gthread_once_t; | |
| 45 typedef pthread_mutex_t __gthread_mutex_t; | |
| 46 typedef pthread_cond_t __gthread_cond_t; | |
| 47 | |
| 48 /* POSIX like conditional variables are supported. Please look at comments | |
| 49 in gthr.h for details. */ | |
| 50 #define __GTHREAD_HAS_COND 1 | |
| 51 | |
| 52 typedef struct { | |
| 53 long depth; | |
| 54 pthread_t owner; | |
| 55 pthread_mutex_t actual; | |
| 56 } __gthread_recursive_mutex_t; | |
| 57 | |
| 58 #define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER | |
| 59 #define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT | |
| 60 #define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function | |
| 61 #define __GTHREAD_COND_INIT PTHREAD_COND_INITIALIZER | |
| 62 | |
| 63 #if SUPPORTS_WEAK && GTHREAD_USE_WEAK | |
| 64 # define __gthrw(name) \ | |
| 65 static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name))); | |
| 66 # define __gthrw_(name) __gthrw_ ## name | |
| 67 #else | |
| 68 # define __gthrw(name) | |
| 69 # define __gthrw_(name) name | |
| 70 #endif | |
| 71 | |
| 72 __gthrw(pthread_once) | |
| 73 __gthrw(pthread_key_create) | |
| 74 __gthrw(pthread_key_delete) | |
| 75 __gthrw(pthread_getspecific) | |
| 76 __gthrw(pthread_setspecific) | |
| 77 __gthrw(pthread_create) | |
| 78 __gthrw(pthread_cancel) | |
| 79 __gthrw(pthread_self) | |
| 80 | |
| 81 __gthrw(pthread_mutex_init) | |
| 82 __gthrw(pthread_mutex_destroy) | |
| 83 __gthrw(pthread_mutex_lock) | |
| 84 __gthrw(pthread_mutex_trylock) | |
| 85 __gthrw(pthread_mutex_unlock) | |
| 86 __gthrw(pthread_mutexattr_init) | |
| 87 __gthrw(pthread_mutexattr_destroy) | |
| 88 | |
| 89 __gthrw(pthread_cond_broadcast) | |
| 90 __gthrw(pthread_cond_wait) | |
| 91 | |
| 92 #if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK) | |
| 93 /* Objective-C. */ | |
| 94 __gthrw(pthread_cond_destroy) | |
| 95 __gthrw(pthread_cond_init) | |
| 96 __gthrw(pthread_cond_signal) | |
| 97 __gthrw(pthread_exit) | |
| 98 #ifdef _POSIX_PRIORITY_SCHEDULING | |
| 99 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING | |
| 100 __gthrw(sched_get_priority_max) | |
| 101 __gthrw(sched_get_priority_min) | |
| 102 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ | |
| 103 #endif /* _POSIX_PRIORITY_SCHEDULING */ | |
| 104 __gthrw(sched_yield) | |
| 105 __gthrw(pthread_attr_destroy) | |
| 106 __gthrw(pthread_attr_init) | |
| 107 __gthrw(pthread_attr_setdetachstate) | |
| 108 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING | |
| 109 __gthrw(pthread_getschedparam) | |
| 110 __gthrw(pthread_setschedparam) | |
| 111 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ | |
| 112 #endif /* _LIBOBJC || _LIBOBJC_WEAK */ | |
| 113 | |
| 114 #if SUPPORTS_WEAK && GTHREAD_USE_WEAK | |
| 115 | |
| 116 /* On Solaris 2.6 up to 9, the libc exposes a POSIX threads interface even if | |
| 117 -pthreads is not specified. The functions are dummies and most return an | |
| 118 error value. However pthread_once returns 0 without invoking the routine | |
| 119 it is passed so we cannot pretend that the interface is active if -pthreads | |
| 120 is not specified. On Solaris 2.5.1, the interface is not exposed at all so | |
| 121 we need to play the usual game with weak symbols. On Solaris 10 and up, a | |
| 122 working interface is always exposed. On FreeBSD 6 and later, libc also | |
| 123 exposes a dummy POSIX threads interface, similar to what Solaris 2.6 up | |
| 124 to 9 does. FreeBSD >= 700014 even provides a pthread_cancel stub in libc, | |
| 125 which means the alternate __gthread_active_p below cannot be used there. */ | |
| 126 | |
| 127 #if defined(__FreeBSD__) || (defined(__sun) && defined(__svr4__)) | |
| 128 | |
| 129 static volatile int __gthread_active = -1; | |
| 130 | |
| 131 static void | |
| 132 __gthread_trigger (void) | |
| 133 { | |
| 134 __gthread_active = 1; | |
| 135 } | |
| 136 | |
| 137 static inline int | |
| 138 __gthread_active_p (void) | |
| 139 { | |
| 140 static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER; | |
| 141 static pthread_once_t __gthread_active_once = PTHREAD_ONCE_INIT; | |
| 142 | |
| 143 /* Avoid reading __gthread_active twice on the main code path. */ | |
| 144 int __gthread_active_latest_value = __gthread_active; | |
| 145 | |
| 146 /* This test is not protected to avoid taking a lock on the main code | |
| 147 path so every update of __gthread_active in a threaded program must | |
| 148 be atomic with regard to the result of the test. */ | |
| 149 if (__builtin_expect (__gthread_active_latest_value < 0, 0)) | |
| 150 { | |
| 151 if (__gthrw_(pthread_once)) | |
| 152 { | |
| 153 /* If this really is a threaded program, then we must ensure that | |
| 154 __gthread_active has been set to 1 before exiting this block. */ | |
| 155 __gthrw_(pthread_mutex_lock) (&__gthread_active_mutex); | |
| 156 __gthrw_(pthread_once) (&__gthread_active_once, __gthread_trigger); | |
| 157 __gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex); | |
| 158 } | |
| 159 | |
| 160 /* Make sure we'll never enter this block again. */ | |
| 161 if (__gthread_active < 0) | |
| 162 __gthread_active = 0; | |
| 163 | |
| 164 __gthread_active_latest_value = __gthread_active; | |
| 165 } | |
| 166 | |
| 167 return __gthread_active_latest_value != 0; | |
| 168 } | |
| 169 | |
| 170 #else /* neither FreeBSD nor Solaris */ | |
| 171 | |
| 172 static inline int | |
| 173 __gthread_active_p (void) | |
| 174 { | |
|
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update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
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175 static void *const __gthread_active_ptr |
| 0 | 176 = __extension__ (void *) &__gthrw_(pthread_cancel); |
| 177 return __gthread_active_ptr != 0; | |
| 178 } | |
| 179 | |
| 180 #endif /* FreeBSD or Solaris */ | |
| 181 | |
| 182 #else /* not SUPPORTS_WEAK */ | |
| 183 | |
| 184 /* Similar to Solaris, HP-UX 11 for PA-RISC provides stubs for pthread | |
| 185 calls in shared flavors of the HP-UX C library. Most of the stubs | |
| 186 have no functionality. The details are described in the "libc cumulative | |
| 187 patch" for each subversion of HP-UX 11. There are two special interfaces | |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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changeset
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188 provided for checking whether an application is linked to a shared pthread |
| 0 | 189 library or not. However, these interfaces aren't available in early |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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changeset
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190 pthread libraries. We also need a test that works for archive |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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191 libraries. We can't use pthread_once as some libc versions call the |
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f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
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changeset
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192 init function. We also can't use pthread_create or pthread_attr_init |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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193 as these create a thread and thereby prevent changing the default stack |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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194 size. The function pthread_default_stacksize_np is available in both |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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195 the archive and shared versions of libpthread. It can be used to |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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196 determine the default pthread stack size. There is a stub in some |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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197 shared libc versions which returns a zero size if pthreads are not |
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198 active. We provide an equivalent stub to handle cases where libc |
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199 doesn't provide one. */ |
| 0 | 200 |
| 201 #if defined(__hppa__) && defined(__hpux__) | |
| 202 | |
| 203 static volatile int __gthread_active = -1; | |
| 204 | |
| 205 static inline int | |
| 206 __gthread_active_p (void) | |
| 207 { | |
| 208 /* Avoid reading __gthread_active twice on the main code path. */ | |
| 209 int __gthread_active_latest_value = __gthread_active; | |
|
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210 size_t __s; |
| 0 | 211 |
| 212 if (__builtin_expect (__gthread_active_latest_value < 0, 0)) | |
| 213 { | |
|
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214 pthread_default_stacksize_np (0, &__s); |
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215 __gthread_active = __s ? 1 : 0; |
| 0 | 216 __gthread_active_latest_value = __gthread_active; |
| 217 } | |
| 218 | |
| 219 return __gthread_active_latest_value != 0; | |
| 220 } | |
| 221 | |
| 222 #else /* not hppa-hpux */ | |
| 223 | |
| 224 static inline int | |
| 225 __gthread_active_p (void) | |
| 226 { | |
| 227 return 1; | |
| 228 } | |
| 229 | |
| 230 #endif /* hppa-hpux */ | |
| 231 | |
| 232 #endif /* SUPPORTS_WEAK */ | |
| 233 | |
| 234 #ifdef _LIBOBJC | |
| 235 | |
| 236 /* This is the config.h file in libobjc/ */ | |
| 237 #include <config.h> | |
| 238 | |
| 239 #ifdef HAVE_SCHED_H | |
| 240 # include <sched.h> | |
| 241 #endif | |
| 242 | |
| 243 /* Key structure for maintaining thread specific storage */ | |
| 244 static pthread_key_t _objc_thread_storage; | |
| 245 static pthread_attr_t _objc_thread_attribs; | |
| 246 | |
| 247 /* Thread local storage for a single thread */ | |
| 248 static void *thread_local_storage = NULL; | |
| 249 | |
| 250 /* Backend initialization functions */ | |
| 251 | |
| 252 /* Initialize the threads subsystem. */ | |
| 253 static inline int | |
| 254 __gthread_objc_init_thread_system (void) | |
| 255 { | |
| 256 if (__gthread_active_p ()) | |
| 257 { | |
| 258 /* Initialize the thread storage key. */ | |
| 259 if (__gthrw_(pthread_key_create) (&_objc_thread_storage, NULL) == 0) | |
| 260 { | |
| 261 /* The normal default detach state for threads is | |
| 262 * PTHREAD_CREATE_JOINABLE which causes threads to not die | |
| 263 * when you think they should. */ | |
| 264 if (__gthrw_(pthread_attr_init) (&_objc_thread_attribs) == 0 | |
| 265 && __gthrw_(pthread_attr_setdetachstate) (&_objc_thread_attribs, | |
| 266 PTHREAD_CREATE_DETACHED) == 0) | |
| 267 return 0; | |
| 268 } | |
| 269 } | |
| 270 | |
| 271 return -1; | |
| 272 } | |
| 273 | |
| 274 /* Close the threads subsystem. */ | |
| 275 static inline int | |
| 276 __gthread_objc_close_thread_system (void) | |
| 277 { | |
| 278 if (__gthread_active_p () | |
| 279 && __gthrw_(pthread_key_delete) (_objc_thread_storage) == 0 | |
| 280 && __gthrw_(pthread_attr_destroy) (&_objc_thread_attribs) == 0) | |
| 281 return 0; | |
| 282 | |
| 283 return -1; | |
| 284 } | |
| 285 | |
| 286 /* Backend thread functions */ | |
| 287 | |
| 288 /* Create a new thread of execution. */ | |
| 289 static inline objc_thread_t | |
| 290 __gthread_objc_thread_detach (void (*func)(void *), void *arg) | |
| 291 { | |
| 292 objc_thread_t thread_id; | |
| 293 pthread_t new_thread_handle; | |
| 294 | |
| 295 if (!__gthread_active_p ()) | |
| 296 return NULL; | |
| 297 | |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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298 if (!(__gthrw_(pthread_create) (&new_thread_handle, &_objc_thread_attribs, |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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299 (void *) func, arg))) |
| 0 | 300 thread_id = (objc_thread_t) new_thread_handle; |
| 301 else | |
| 302 thread_id = NULL; | |
| 303 | |
| 304 return thread_id; | |
| 305 } | |
| 306 | |
| 307 /* Set the current thread's priority. */ | |
| 308 static inline int | |
| 309 __gthread_objc_thread_set_priority (int priority) | |
| 310 { | |
| 311 if (!__gthread_active_p ()) | |
| 312 return -1; | |
| 313 else | |
| 314 { | |
| 315 #ifdef _POSIX_PRIORITY_SCHEDULING | |
| 316 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING | |
| 317 pthread_t thread_id = __gthrw_(pthread_self) (); | |
| 318 int policy; | |
| 319 struct sched_param params; | |
| 320 int priority_min, priority_max; | |
| 321 | |
| 322 if (__gthrw_(pthread_getschedparam) (thread_id, &policy, ¶ms) == 0) | |
| 323 { | |
| 324 if ((priority_max = __gthrw_(sched_get_priority_max) (policy)) == -1) | |
| 325 return -1; | |
| 326 | |
| 327 if ((priority_min = __gthrw_(sched_get_priority_min) (policy)) == -1) | |
| 328 return -1; | |
| 329 | |
| 330 if (priority > priority_max) | |
| 331 priority = priority_max; | |
| 332 else if (priority < priority_min) | |
| 333 priority = priority_min; | |
| 334 params.sched_priority = priority; | |
| 335 | |
| 336 /* | |
| 337 * The solaris 7 and several other man pages incorrectly state that | |
| 338 * this should be a pointer to policy but pthread.h is universally | |
| 339 * at odds with this. | |
| 340 */ | |
| 341 if (__gthrw_(pthread_setschedparam) (thread_id, policy, ¶ms) == 0) | |
| 342 return 0; | |
| 343 } | |
| 344 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ | |
| 345 #endif /* _POSIX_PRIORITY_SCHEDULING */ | |
| 346 return -1; | |
| 347 } | |
| 348 } | |
| 349 | |
| 350 /* Return the current thread's priority. */ | |
| 351 static inline int | |
| 352 __gthread_objc_thread_get_priority (void) | |
| 353 { | |
| 354 #ifdef _POSIX_PRIORITY_SCHEDULING | |
| 355 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING | |
| 356 if (__gthread_active_p ()) | |
| 357 { | |
| 358 int policy; | |
| 359 struct sched_param params; | |
| 360 | |
| 361 if (__gthrw_(pthread_getschedparam) (__gthrw_(pthread_self) (), &policy, ¶ms) == 0) | |
| 362 return params.sched_priority; | |
| 363 else | |
| 364 return -1; | |
| 365 } | |
| 366 else | |
| 367 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ | |
| 368 #endif /* _POSIX_PRIORITY_SCHEDULING */ | |
| 369 return OBJC_THREAD_INTERACTIVE_PRIORITY; | |
| 370 } | |
| 371 | |
| 372 /* Yield our process time to another thread. */ | |
| 373 static inline void | |
| 374 __gthread_objc_thread_yield (void) | |
| 375 { | |
| 376 if (__gthread_active_p ()) | |
| 377 __gthrw_(sched_yield) (); | |
| 378 } | |
| 379 | |
| 380 /* Terminate the current thread. */ | |
| 381 static inline int | |
| 382 __gthread_objc_thread_exit (void) | |
| 383 { | |
| 384 if (__gthread_active_p ()) | |
| 385 /* exit the thread */ | |
| 386 __gthrw_(pthread_exit) (&__objc_thread_exit_status); | |
| 387 | |
| 388 /* Failed if we reached here */ | |
| 389 return -1; | |
| 390 } | |
| 391 | |
| 392 /* Returns an integer value which uniquely describes a thread. */ | |
| 393 static inline objc_thread_t | |
| 394 __gthread_objc_thread_id (void) | |
| 395 { | |
| 396 if (__gthread_active_p ()) | |
| 397 return (objc_thread_t) __gthrw_(pthread_self) (); | |
| 398 else | |
| 399 return (objc_thread_t) 1; | |
| 400 } | |
| 401 | |
| 402 /* Sets the thread's local storage pointer. */ | |
| 403 static inline int | |
| 404 __gthread_objc_thread_set_data (void *value) | |
| 405 { | |
| 406 if (__gthread_active_p ()) | |
| 407 return __gthrw_(pthread_setspecific) (_objc_thread_storage, value); | |
| 408 else | |
| 409 { | |
| 410 thread_local_storage = value; | |
| 411 return 0; | |
| 412 } | |
| 413 } | |
| 414 | |
| 415 /* Returns the thread's local storage pointer. */ | |
| 416 static inline void * | |
| 417 __gthread_objc_thread_get_data (void) | |
| 418 { | |
| 419 if (__gthread_active_p ()) | |
| 420 return __gthrw_(pthread_getspecific) (_objc_thread_storage); | |
| 421 else | |
| 422 return thread_local_storage; | |
| 423 } | |
| 424 | |
| 425 /* Backend mutex functions */ | |
| 426 | |
| 427 /* Allocate a mutex. */ | |
| 428 static inline int | |
| 429 __gthread_objc_mutex_allocate (objc_mutex_t mutex) | |
| 430 { | |
| 431 if (__gthread_active_p ()) | |
| 432 { | |
| 433 mutex->backend = objc_malloc (sizeof (pthread_mutex_t)); | |
| 434 | |
| 435 if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, NULL)) | |
| 436 { | |
| 437 objc_free (mutex->backend); | |
| 438 mutex->backend = NULL; | |
| 439 return -1; | |
| 440 } | |
| 441 } | |
| 442 | |
| 443 return 0; | |
| 444 } | |
| 445 | |
| 446 /* Deallocate a mutex. */ | |
| 447 static inline int | |
| 448 __gthread_objc_mutex_deallocate (objc_mutex_t mutex) | |
| 449 { | |
| 450 if (__gthread_active_p ()) | |
| 451 { | |
| 452 int count; | |
| 453 | |
| 454 /* | |
| 455 * Posix Threads specifically require that the thread be unlocked | |
| 456 * for __gthrw_(pthread_mutex_destroy) to work. | |
| 457 */ | |
| 458 | |
| 459 do | |
| 460 { | |
| 461 count = __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend); | |
| 462 if (count < 0) | |
| 463 return -1; | |
| 464 } | |
| 465 while (count); | |
| 466 | |
| 467 if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend)) | |
| 468 return -1; | |
| 469 | |
| 470 objc_free (mutex->backend); | |
| 471 mutex->backend = NULL; | |
| 472 } | |
| 473 return 0; | |
| 474 } | |
| 475 | |
| 476 /* Grab a lock on a mutex. */ | |
| 477 static inline int | |
| 478 __gthread_objc_mutex_lock (objc_mutex_t mutex) | |
| 479 { | |
| 480 if (__gthread_active_p () | |
| 481 && __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend) != 0) | |
| 482 { | |
| 483 return -1; | |
| 484 } | |
| 485 | |
| 486 return 0; | |
| 487 } | |
| 488 | |
| 489 /* Try to grab a lock on a mutex. */ | |
| 490 static inline int | |
| 491 __gthread_objc_mutex_trylock (objc_mutex_t mutex) | |
| 492 { | |
| 493 if (__gthread_active_p () | |
| 494 && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 0) | |
| 495 { | |
| 496 return -1; | |
| 497 } | |
| 498 | |
| 499 return 0; | |
| 500 } | |
| 501 | |
| 502 /* Unlock the mutex */ | |
| 503 static inline int | |
| 504 __gthread_objc_mutex_unlock (objc_mutex_t mutex) | |
| 505 { | |
| 506 if (__gthread_active_p () | |
| 507 && __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend) != 0) | |
| 508 { | |
| 509 return -1; | |
| 510 } | |
| 511 | |
| 512 return 0; | |
| 513 } | |
| 514 | |
| 515 /* Backend condition mutex functions */ | |
| 516 | |
| 517 /* Allocate a condition. */ | |
| 518 static inline int | |
| 519 __gthread_objc_condition_allocate (objc_condition_t condition) | |
| 520 { | |
| 521 if (__gthread_active_p ()) | |
| 522 { | |
| 523 condition->backend = objc_malloc (sizeof (pthread_cond_t)); | |
| 524 | |
| 525 if (__gthrw_(pthread_cond_init) ((pthread_cond_t *) condition->backend, NULL)) | |
| 526 { | |
| 527 objc_free (condition->backend); | |
| 528 condition->backend = NULL; | |
| 529 return -1; | |
| 530 } | |
| 531 } | |
| 532 | |
| 533 return 0; | |
| 534 } | |
| 535 | |
| 536 /* Deallocate a condition. */ | |
| 537 static inline int | |
| 538 __gthread_objc_condition_deallocate (objc_condition_t condition) | |
| 539 { | |
| 540 if (__gthread_active_p ()) | |
| 541 { | |
| 542 if (__gthrw_(pthread_cond_destroy) ((pthread_cond_t *) condition->backend)) | |
| 543 return -1; | |
| 544 | |
| 545 objc_free (condition->backend); | |
| 546 condition->backend = NULL; | |
| 547 } | |
| 548 return 0; | |
| 549 } | |
| 550 | |
| 551 /* Wait on the condition */ | |
| 552 static inline int | |
| 553 __gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex) | |
| 554 { | |
| 555 if (__gthread_active_p ()) | |
| 556 return __gthrw_(pthread_cond_wait) ((pthread_cond_t *) condition->backend, | |
| 557 (pthread_mutex_t *) mutex->backend); | |
| 558 else | |
| 559 return 0; | |
| 560 } | |
| 561 | |
| 562 /* Wake up all threads waiting on this condition. */ | |
| 563 static inline int | |
| 564 __gthread_objc_condition_broadcast (objc_condition_t condition) | |
| 565 { | |
| 566 if (__gthread_active_p ()) | |
| 567 return __gthrw_(pthread_cond_broadcast) ((pthread_cond_t *) condition->backend); | |
| 568 else | |
| 569 return 0; | |
| 570 } | |
| 571 | |
| 572 /* Wake up one thread waiting on this condition. */ | |
| 573 static inline int | |
| 574 __gthread_objc_condition_signal (objc_condition_t condition) | |
| 575 { | |
| 576 if (__gthread_active_p ()) | |
| 577 return __gthrw_(pthread_cond_signal) ((pthread_cond_t *) condition->backend); | |
| 578 else | |
| 579 return 0; | |
| 580 } | |
| 581 | |
| 582 #else /* _LIBOBJC */ | |
| 583 | |
| 584 static inline int | |
| 585 __gthread_once (__gthread_once_t *__once, void (*__func) (void)) | |
| 586 { | |
| 587 if (__gthread_active_p ()) | |
| 588 return __gthrw_(pthread_once) (__once, __func); | |
| 589 else | |
| 590 return -1; | |
| 591 } | |
| 592 | |
| 593 static inline int | |
| 594 __gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) | |
| 595 { | |
| 596 return __gthrw_(pthread_key_create) (__key, __dtor); | |
| 597 } | |
| 598 | |
| 599 static inline int | |
| 600 __gthread_key_delete (__gthread_key_t __key) | |
| 601 { | |
| 602 return __gthrw_(pthread_key_delete) (__key); | |
| 603 } | |
| 604 | |
| 605 static inline void * | |
| 606 __gthread_getspecific (__gthread_key_t __key) | |
| 607 { | |
| 608 return __gthrw_(pthread_getspecific) (__key); | |
| 609 } | |
| 610 | |
| 611 static inline int | |
| 612 __gthread_setspecific (__gthread_key_t __key, const void *__ptr) | |
| 613 { | |
| 614 return __gthrw_(pthread_setspecific) (__key, __ptr); | |
| 615 } | |
| 616 | |
| 617 static inline int | |
| 618 __gthread_mutex_destroy (__gthread_mutex_t *__mutex) | |
| 619 { | |
| 620 if (__gthread_active_p ()) | |
| 621 return __gthrw_(pthread_mutex_destroy) (__mutex); | |
| 622 else | |
| 623 return 0; | |
| 624 } | |
| 625 | |
| 626 static inline int | |
| 627 __gthread_mutex_lock (__gthread_mutex_t *__mutex) | |
| 628 { | |
| 629 if (__gthread_active_p ()) | |
| 630 return __gthrw_(pthread_mutex_lock) (__mutex); | |
| 631 else | |
| 632 return 0; | |
| 633 } | |
| 634 | |
| 635 static inline int | |
| 636 __gthread_mutex_trylock (__gthread_mutex_t *__mutex) | |
| 637 { | |
| 638 if (__gthread_active_p ()) | |
| 639 return __gthrw_(pthread_mutex_trylock) (__mutex); | |
| 640 else | |
| 641 return 0; | |
| 642 } | |
| 643 | |
| 644 static inline int | |
| 645 __gthread_mutex_unlock (__gthread_mutex_t *__mutex) | |
| 646 { | |
| 647 if (__gthread_active_p ()) | |
| 648 return __gthrw_(pthread_mutex_unlock) (__mutex); | |
| 649 else | |
| 650 return 0; | |
| 651 } | |
| 652 | |
| 653 static inline int | |
| 654 __gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) | |
| 655 { | |
| 656 __mutex->depth = 0; | |
| 657 __mutex->owner = (pthread_t) 0; | |
| 658 return __gthrw_(pthread_mutex_init) (&__mutex->actual, NULL); | |
| 659 } | |
| 660 | |
| 661 static inline int | |
| 662 __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) | |
| 663 { | |
| 664 if (__gthread_active_p ()) | |
| 665 { | |
| 666 pthread_t __me = __gthrw_(pthread_self) (); | |
| 667 | |
| 668 if (__mutex->owner != __me) | |
| 669 { | |
| 670 __gthrw_(pthread_mutex_lock) (&__mutex->actual); | |
| 671 __mutex->owner = __me; | |
| 672 } | |
| 673 | |
| 674 __mutex->depth++; | |
| 675 } | |
| 676 return 0; | |
| 677 } | |
| 678 | |
| 679 static inline int | |
| 680 __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) | |
| 681 { | |
| 682 if (__gthread_active_p ()) | |
| 683 { | |
| 684 pthread_t __me = __gthrw_(pthread_self) (); | |
| 685 | |
| 686 if (__mutex->owner != __me) | |
| 687 { | |
| 688 if (__gthrw_(pthread_mutex_trylock) (&__mutex->actual)) | |
| 689 return 1; | |
| 690 __mutex->owner = __me; | |
| 691 } | |
| 692 | |
| 693 __mutex->depth++; | |
| 694 } | |
| 695 return 0; | |
| 696 } | |
| 697 | |
| 698 static inline int | |
| 699 __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) | |
| 700 { | |
| 701 if (__gthread_active_p ()) | |
| 702 { | |
| 703 if (--__mutex->depth == 0) | |
| 704 { | |
| 705 __mutex->owner = (pthread_t) 0; | |
| 706 __gthrw_(pthread_mutex_unlock) (&__mutex->actual); | |
| 707 } | |
| 708 } | |
| 709 return 0; | |
| 710 } | |
| 711 | |
| 712 static inline int | |
| 713 __gthread_cond_broadcast (__gthread_cond_t *__cond) | |
| 714 { | |
| 715 return __gthrw_(pthread_cond_broadcast) (__cond); | |
| 716 } | |
| 717 | |
| 718 static inline int | |
| 719 __gthread_cond_wait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex) | |
| 720 { | |
| 721 return __gthrw_(pthread_cond_wait) (__cond, __mutex); | |
| 722 } | |
| 723 | |
| 724 static inline int | |
| 725 __gthread_cond_wait_recursive (__gthread_cond_t *__cond, | |
| 726 __gthread_recursive_mutex_t *__mutex) | |
| 727 { | |
| 728 return __gthrw_(pthread_cond_wait) (__cond, &__mutex->actual); | |
| 729 } | |
| 730 | |
| 731 #endif /* _LIBOBJC */ | |
| 732 | |
| 733 #endif /* ! GCC_GTHR_POSIX_H */ |