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15794a95 | 1 | /* Threads compatibility routines for libgcc2 and libobjc. */ |
f24af81b | 2 | /* Compile this one with gcc. */ |
a945c346 | 3 | /* Copyright (C) 1997-2024 Free Software Foundation, Inc. |
f24af81b | 4 | |
1322177d | 5 | This file is part of GCC. |
f24af81b | 6 | |
1322177d LB |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
748086b7 | 9 | Software Foundation; either version 3, or (at your option) any later |
1322177d | 10 | version. |
f24af81b | 11 | |
1322177d LB |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
f24af81b | 16 | |
748086b7 JJ |
17 | Under Section 7 of GPL version 3, you are granted additional |
18 | permissions described in the GCC Runtime Library Exception, version | |
19 | 3.1, as published by the Free Software Foundation. | |
20 | ||
21 | You should have received a copy of the GNU General Public License and | |
22 | a copy of the GCC Runtime Library Exception along with this program; | |
23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 | <http://www.gnu.org/licenses/>. */ | |
f24af81b | 25 | |
88657302 RH |
26 | #ifndef GCC_GTHR_POSIX_H |
27 | #define GCC_GTHR_POSIX_H | |
f24af81b TT |
28 | |
29 | /* POSIX threads specific definitions. | |
71287280 | 30 | Easy, since the interface is just one-to-one mapping. */ |
f24af81b TT |
31 | |
32 | #define __GTHREADS 1 | |
a75150ae | 33 | #define __GTHREADS_CXX0X 1 |
f24af81b TT |
34 | |
35 | #include <pthread.h> | |
6545e33e PC |
36 | |
37 | #if ((defined(_LIBOBJC) || defined(_LIBOBJC_WEAK)) \ | |
38 | || !defined(_GTHREAD_USE_MUTEX_TIMEDLOCK)) | |
39 | # include <unistd.h> | |
40 | # if defined(_POSIX_TIMEOUTS) && _POSIX_TIMEOUTS >= 0 | |
41 | # define _GTHREAD_USE_MUTEX_TIMEDLOCK 1 | |
42 | # else | |
43 | # define _GTHREAD_USE_MUTEX_TIMEDLOCK 0 | |
44 | # endif | |
45 | #endif | |
f24af81b | 46 | |
a75150ae | 47 | typedef pthread_t __gthread_t; |
f24af81b TT |
48 | typedef pthread_key_t __gthread_key_t; |
49 | typedef pthread_once_t __gthread_once_t; | |
50 | typedef pthread_mutex_t __gthread_mutex_t; | |
b806c88f LZ |
51 | #ifndef __cplusplus |
52 | typedef pthread_rwlock_t __gthread_rwlock_t; | |
53 | #endif | |
40aac948 | 54 | typedef pthread_mutex_t __gthread_recursive_mutex_t; |
afd82ef5 | 55 | typedef pthread_cond_t __gthread_cond_t; |
a75150ae | 56 | typedef struct timespec __gthread_time_t; |
afd82ef5 DK |
57 | |
58 | /* POSIX like conditional variables are supported. Please look at comments | |
59 | in gthr.h for details. */ | |
b8698a0f | 60 | #define __GTHREAD_HAS_COND 1 |
f24af81b TT |
61 | |
62 | #define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER | |
33e3e24d | 63 | #define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function |
b806c88f LZ |
64 | #ifndef __cplusplus |
65 | #define __GTHREAD_RWLOCK_INIT PTHREAD_RWLOCK_INITIALIZER | |
66 | #endif | |
f24af81b | 67 | #define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT |
40aac948 JM |
68 | #if defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER) |
69 | #define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER | |
70 | #elif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP) | |
71 | #define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP | |
e95dc99b | 72 | #else |
ab3d1049 | 73 | #define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function |
40aac948 | 74 | #endif |
afd82ef5 | 75 | #define __GTHREAD_COND_INIT PTHREAD_COND_INITIALIZER |
a75150ae | 76 | #define __GTHREAD_TIME_INIT {0,0} |
f24af81b | 77 | |
b59cbd50 JW |
78 | #ifdef _GTHREAD_USE_MUTEX_INIT_FUNC |
79 | # undef __GTHREAD_MUTEX_INIT | |
b59cbd50 JW |
80 | #endif |
81 | #ifdef _GTHREAD_USE_RECURSIVE_MUTEX_INIT_FUNC | |
82 | # undef __GTHREAD_RECURSIVE_MUTEX_INIT | |
83 | # undef __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION | |
84 | # define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function | |
85 | #endif | |
86 | #ifdef _GTHREAD_USE_COND_INIT_FUNC | |
87 | # undef __GTHREAD_COND_INIT | |
88 | # define __GTHREAD_COND_INIT_FUNCTION __gthread_cond_init_function | |
89 | #endif | |
90 | ||
f24af81b | 91 | #if SUPPORTS_WEAK && GTHREAD_USE_WEAK |
b36e79e5 RO |
92 | # ifndef __gthrw_pragma |
93 | # define __gthrw_pragma(pragma) | |
94 | # endif | |
a11dd268 | 95 | # define __gthrw2(name,name2,type) \ |
29d24852 MS |
96 | static __typeof(type) name \ |
97 | __attribute__ ((__weakref__(#name2), __copy__ (type))); \ | |
b36e79e5 | 98 | __gthrw_pragma(weak type) |
72b16773 | 99 | # define __gthrw_(name) __gthrw_ ## name |
7ef67393 | 100 | #else |
a11dd268 | 101 | # define __gthrw2(name,name2,type) |
72b16773 | 102 | # define __gthrw_(name) name |
7ef67393 | 103 | #endif |
f24af81b | 104 | |
efbbbb61 | 105 | /* Typically, __gthrw_foo is a weak reference to symbol foo. */ |
a11dd268 | 106 | #define __gthrw(name) __gthrw2(__gthrw_ ## name,name,name) |
c2a8530e | 107 | |
72b16773 | 108 | __gthrw(pthread_once) |
72b16773 AO |
109 | __gthrw(pthread_getspecific) |
110 | __gthrw(pthread_setspecific) | |
a75150ae | 111 | |
72b16773 | 112 | __gthrw(pthread_create) |
a75150ae CF |
113 | __gthrw(pthread_join) |
114 | __gthrw(pthread_equal) | |
115 | __gthrw(pthread_self) | |
116 | __gthrw(pthread_detach) | |
3714764d | 117 | #ifndef __BIONIC__ |
72b16773 | 118 | __gthrw(pthread_cancel) |
3714764d | 119 | #endif |
a75150ae CF |
120 | __gthrw(sched_yield) |
121 | ||
72b16773 AO |
122 | __gthrw(pthread_mutex_lock) |
123 | __gthrw(pthread_mutex_trylock) | |
6545e33e | 124 | #if _GTHREAD_USE_MUTEX_TIMEDLOCK |
a75150ae | 125 | __gthrw(pthread_mutex_timedlock) |
1cd8b853 | 126 | #endif |
72b16773 | 127 | __gthrw(pthread_mutex_unlock) |
c2a8530e | 128 | __gthrw(pthread_mutex_init) |
4dabf736 | 129 | __gthrw(pthread_mutex_destroy) |
a75150ae | 130 | |
b59cbd50 | 131 | __gthrw(pthread_cond_init) |
afd82ef5 | 132 | __gthrw(pthread_cond_broadcast) |
a75150ae | 133 | __gthrw(pthread_cond_signal) |
afd82ef5 | 134 | __gthrw(pthread_cond_wait) |
a75150ae CF |
135 | __gthrw(pthread_cond_timedwait) |
136 | __gthrw(pthread_cond_destroy) | |
c2a8530e RS |
137 | |
138 | __gthrw(pthread_key_create) | |
139 | __gthrw(pthread_key_delete) | |
72b16773 AO |
140 | __gthrw(pthread_mutexattr_init) |
141 | __gthrw(pthread_mutexattr_settype) | |
142 | __gthrw(pthread_mutexattr_destroy) | |
70008293 | 143 | |
b806c88f LZ |
144 | #ifndef __cplusplus |
145 | __gthrw(pthread_rwlock_rdlock) | |
146 | __gthrw(pthread_rwlock_tryrdlock) | |
147 | __gthrw(pthread_rwlock_wrlock) | |
148 | __gthrw(pthread_rwlock_trywrlock) | |
149 | __gthrw(pthread_rwlock_unlock) | |
150 | #endif | |
15794a95 | 151 | |
2a4e8ebc | 152 | #if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK) |
40f03658 | 153 | /* Objective-C. */ |
72b16773 | 154 | __gthrw(pthread_exit) |
45863ba3 | 155 | #ifdef _POSIX_PRIORITY_SCHEDULING |
c95d07f8 | 156 | #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING |
72b16773 AO |
157 | __gthrw(sched_get_priority_max) |
158 | __gthrw(sched_get_priority_min) | |
c95d07f8 | 159 | #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ |
45863ba3 | 160 | #endif /* _POSIX_PRIORITY_SCHEDULING */ |
72b16773 AO |
161 | __gthrw(pthread_attr_destroy) |
162 | __gthrw(pthread_attr_init) | |
163 | __gthrw(pthread_attr_setdetachstate) | |
c95d07f8 | 164 | #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING |
72b16773 AO |
165 | __gthrw(pthread_getschedparam) |
166 | __gthrw(pthread_setschedparam) | |
c95d07f8 | 167 | #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ |
2a4e8ebc | 168 | #endif /* _LIBOBJC || _LIBOBJC_WEAK */ |
f24af81b | 169 | |
7ef67393 AO |
170 | #if SUPPORTS_WEAK && GTHREAD_USE_WEAK |
171 | ||
efd6ef80 EB |
172 | /* On Solaris 2.6 up to 9, the libc exposes a POSIX threads interface even if |
173 | -pthreads is not specified. The functions are dummies and most return an | |
174 | error value. However pthread_once returns 0 without invoking the routine | |
175 | it is passed so we cannot pretend that the interface is active if -pthreads | |
176 | is not specified. On Solaris 2.5.1, the interface is not exposed at all so | |
177 | we need to play the usual game with weak symbols. On Solaris 10 and up, a | |
799cff46 MS |
178 | working interface is always exposed. On FreeBSD 6 and later, libc also |
179 | exposes a dummy POSIX threads interface, similar to what Solaris 2.6 up | |
180 | to 9 does. FreeBSD >= 700014 even provides a pthread_cancel stub in libc, | |
181 | which means the alternate __gthread_active_p below cannot be used there. */ | |
efd6ef80 | 182 | |
799cff46 | 183 | #if defined(__FreeBSD__) || (defined(__sun) && defined(__svr4__)) |
efd6ef80 EB |
184 | |
185 | static volatile int __gthread_active = -1; | |
186 | ||
187 | static void | |
188 | __gthread_trigger (void) | |
189 | { | |
190 | __gthread_active = 1; | |
191 | } | |
192 | ||
193 | static inline int | |
194 | __gthread_active_p (void) | |
195 | { | |
196 | static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER; | |
197 | static pthread_once_t __gthread_active_once = PTHREAD_ONCE_INIT; | |
198 | ||
199 | /* Avoid reading __gthread_active twice on the main code path. */ | |
200 | int __gthread_active_latest_value = __gthread_active; | |
201 | ||
202 | /* This test is not protected to avoid taking a lock on the main code | |
203 | path so every update of __gthread_active in a threaded program must | |
204 | be atomic with regard to the result of the test. */ | |
205 | if (__builtin_expect (__gthread_active_latest_value < 0, 0)) | |
206 | { | |
207 | if (__gthrw_(pthread_once)) | |
208 | { | |
209 | /* If this really is a threaded program, then we must ensure that | |
210 | __gthread_active has been set to 1 before exiting this block. */ | |
211 | __gthrw_(pthread_mutex_lock) (&__gthread_active_mutex); | |
212 | __gthrw_(pthread_once) (&__gthread_active_once, __gthread_trigger); | |
213 | __gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex); | |
214 | } | |
215 | ||
216 | /* Make sure we'll never enter this block again. */ | |
217 | if (__gthread_active < 0) | |
218 | __gthread_active = 0; | |
219 | ||
220 | __gthread_active_latest_value = __gthread_active; | |
221 | } | |
222 | ||
223 | return __gthread_active_latest_value != 0; | |
224 | } | |
225 | ||
799cff46 | 226 | #else /* neither FreeBSD nor Solaris */ |
efd6ef80 | 227 | |
67a218c5 RM |
228 | /* For a program to be multi-threaded the only thing that it certainly must |
229 | be using is pthread_create. However, there may be other libraries that | |
230 | intercept pthread_create with their own definitions to wrap pthreads | |
231 | functionality for some purpose. In those cases, pthread_create being | |
232 | defined might not necessarily mean that libpthread is actually linked | |
233 | in. | |
234 | ||
235 | For the GNU C library, we can use a known internal name. This is always | |
236 | available in the ABI, but no other library would define it. That is | |
237 | ideal, since any public pthread function might be intercepted just as | |
238 | pthread_create might be. __pthread_key_create is an "internal" | |
239 | implementation symbol, but it is part of the public exported ABI. Also, | |
240 | it's among the symbols that the static libpthread.a always links in | |
241 | whenever pthread_create is used, so there is no danger of a false | |
242 | negative result in any statically-linked, multi-threaded program. | |
243 | ||
244 | For others, we choose pthread_cancel as a function that seems unlikely | |
245 | to be redefined by an interceptor library. The bionic (Android) C | |
246 | library does not provide pthread_cancel, so we do use pthread_create | |
247 | there (and interceptor libraries lose). */ | |
248 | ||
249 | #ifdef __GLIBC__ | |
250 | __gthrw2(__gthrw_(__pthread_key_create), | |
251 | __pthread_key_create, | |
252 | pthread_key_create) | |
253 | # define GTHR_ACTIVE_PROXY __gthrw_(__pthread_key_create) | |
254 | #elif defined (__BIONIC__) | |
255 | # define GTHR_ACTIVE_PROXY __gthrw_(pthread_create) | |
256 | #else | |
257 | # define GTHR_ACTIVE_PROXY __gthrw_(pthread_cancel) | |
258 | #endif | |
259 | ||
f24af81b | 260 | static inline int |
d1e51320 | 261 | __gthread_active_p (void) |
f24af81b | 262 | { |
e621f530 | 263 | static void *const __gthread_active_ptr |
67a218c5 | 264 | = __extension__ (void *) >HR_ACTIVE_PROXY; |
f24af81b TT |
265 | return __gthread_active_ptr != 0; |
266 | } | |
267 | ||
799cff46 | 268 | #endif /* FreeBSD or Solaris */ |
efd6ef80 | 269 | |
f24af81b TT |
270 | #else /* not SUPPORTS_WEAK */ |
271 | ||
f74eeed4 JDA |
272 | /* Similar to Solaris, HP-UX 11 for PA-RISC provides stubs for pthread |
273 | calls in shared flavors of the HP-UX C library. Most of the stubs | |
274 | have no functionality. The details are described in the "libc cumulative | |
275 | patch" for each subversion of HP-UX 11. There are two special interfaces | |
8c157f90 | 276 | provided for checking whether an application is linked to a shared pthread |
f74eeed4 | 277 | library or not. However, these interfaces aren't available in early |
8c157f90 JDA |
278 | libpthread libraries. We also need a test that works for archive |
279 | libraries. We can't use pthread_once as some libc versions call the | |
280 | init function. We also can't use pthread_create or pthread_attr_init | |
281 | as these create a thread and thereby prevent changing the default stack | |
282 | size. The function pthread_default_stacksize_np is available in both | |
283 | the archive and shared versions of libpthread. It can be used to | |
284 | determine the default pthread stack size. There is a stub in some | |
285 | shared libc versions which returns a zero size if pthreads are not | |
286 | active. We provide an equivalent stub to handle cases where libc | |
287 | doesn't provide one. */ | |
f74eeed4 JDA |
288 | |
289 | #if defined(__hppa__) && defined(__hpux__) | |
290 | ||
f74eeed4 JDA |
291 | static volatile int __gthread_active = -1; |
292 | ||
f74eeed4 JDA |
293 | static inline int |
294 | __gthread_active_p (void) | |
295 | { | |
296 | /* Avoid reading __gthread_active twice on the main code path. */ | |
297 | int __gthread_active_latest_value = __gthread_active; | |
8c157f90 | 298 | size_t __s; |
f74eeed4 | 299 | |
f74eeed4 JDA |
300 | if (__builtin_expect (__gthread_active_latest_value < 0, 0)) |
301 | { | |
8c157f90 JDA |
302 | pthread_default_stacksize_np (0, &__s); |
303 | __gthread_active = __s ? 1 : 0; | |
f74eeed4 JDA |
304 | __gthread_active_latest_value = __gthread_active; |
305 | } | |
306 | ||
307 | return __gthread_active_latest_value != 0; | |
308 | } | |
309 | ||
310 | #else /* not hppa-hpux */ | |
311 | ||
f24af81b | 312 | static inline int |
d1e51320 | 313 | __gthread_active_p (void) |
f24af81b TT |
314 | { |
315 | return 1; | |
316 | } | |
317 | ||
f74eeed4 JDA |
318 | #endif /* hppa-hpux */ |
319 | ||
f24af81b TT |
320 | #endif /* SUPPORTS_WEAK */ |
321 | ||
15794a95 L |
322 | #ifdef _LIBOBJC |
323 | ||
5f974826 OP |
324 | /* This is the config.h file in libobjc/ */ |
325 | #include <config.h> | |
326 | ||
327 | #ifdef HAVE_SCHED_H | |
328 | # include <sched.h> | |
329 | #endif | |
330 | ||
15794a95 L |
331 | /* Key structure for maintaining thread specific storage */ |
332 | static pthread_key_t _objc_thread_storage; | |
447c11a5 | 333 | static pthread_attr_t _objc_thread_attribs; |
15794a95 L |
334 | |
335 | /* Thread local storage for a single thread */ | |
336 | static void *thread_local_storage = NULL; | |
337 | ||
338 | /* Backend initialization functions */ | |
339 | ||
71287280 | 340 | /* Initialize the threads subsystem. */ |
15794a95 | 341 | static inline int |
fe83a9ce | 342 | __gthread_objc_init_thread_system (void) |
15794a95 L |
343 | { |
344 | if (__gthread_active_p ()) | |
447c11a5 | 345 | { |
ea4b7848 | 346 | /* Initialize the thread storage key. */ |
72b16773 | 347 | if (__gthrw_(pthread_key_create) (&_objc_thread_storage, NULL) == 0) |
589005ff KH |
348 | { |
349 | /* The normal default detach state for threads is | |
350 | * PTHREAD_CREATE_JOINABLE which causes threads to not die | |
351 | * when you think they should. */ | |
72b16773 AO |
352 | if (__gthrw_(pthread_attr_init) (&_objc_thread_attribs) == 0 |
353 | && __gthrw_(pthread_attr_setdetachstate) (&_objc_thread_attribs, | |
fe83a9ce | 354 | PTHREAD_CREATE_DETACHED) == 0) |
589005ff KH |
355 | return 0; |
356 | } | |
447c11a5 | 357 | } |
abc0360c NP |
358 | |
359 | return -1; | |
15794a95 L |
360 | } |
361 | ||
71287280 | 362 | /* Close the threads subsystem. */ |
15794a95 | 363 | static inline int |
fe83a9ce | 364 | __gthread_objc_close_thread_system (void) |
15794a95 | 365 | { |
447c11a5 | 366 | if (__gthread_active_p () |
72b16773 AO |
367 | && __gthrw_(pthread_key_delete) (_objc_thread_storage) == 0 |
368 | && __gthrw_(pthread_attr_destroy) (&_objc_thread_attribs) == 0) | |
15794a95 | 369 | return 0; |
447c11a5 OP |
370 | |
371 | return -1; | |
15794a95 L |
372 | } |
373 | ||
374 | /* Backend thread functions */ | |
375 | ||
71287280 | 376 | /* Create a new thread of execution. */ |
15794a95 | 377 | static inline objc_thread_t |
fe83a9ce | 378 | __gthread_objc_thread_detach (void (*func)(void *), void *arg) |
15794a95 L |
379 | { |
380 | objc_thread_t thread_id; | |
381 | pthread_t new_thread_handle; | |
382 | ||
383 | if (!__gthread_active_p ()) | |
384 | return NULL; | |
589005ff | 385 | |
708e07fb NP |
386 | if (!(__gthrw_(pthread_create) (&new_thread_handle, &_objc_thread_attribs, |
387 | (void *) func, arg))) | |
fee013ef | 388 | thread_id = (objc_thread_t) new_thread_handle; |
15794a95 L |
389 | else |
390 | thread_id = NULL; | |
589005ff | 391 | |
15794a95 L |
392 | return thread_id; |
393 | } | |
394 | ||
71287280 | 395 | /* Set the current thread's priority. */ |
15794a95 | 396 | static inline int |
fe83a9ce | 397 | __gthread_objc_thread_set_priority (int priority) |
15794a95 | 398 | { |
fe83a9ce | 399 | if (!__gthread_active_p ()) |
447c11a5 | 400 | return -1; |
fe83a9ce KH |
401 | else |
402 | { | |
45863ba3 | 403 | #ifdef _POSIX_PRIORITY_SCHEDULING |
c95d07f8 | 404 | #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING |
72b16773 | 405 | pthread_t thread_id = __gthrw_(pthread_self) (); |
fe83a9ce KH |
406 | int policy; |
407 | struct sched_param params; | |
408 | int priority_min, priority_max; | |
589005ff | 409 | |
72b16773 | 410 | if (__gthrw_(pthread_getschedparam) (thread_id, &policy, ¶ms) == 0) |
fe83a9ce | 411 | { |
72b16773 | 412 | if ((priority_max = __gthrw_(sched_get_priority_max) (policy)) == -1) |
fe83a9ce KH |
413 | return -1; |
414 | ||
72b16773 | 415 | if ((priority_min = __gthrw_(sched_get_priority_min) (policy)) == -1) |
fe83a9ce | 416 | return -1; |
589005ff | 417 | |
fe83a9ce KH |
418 | if (priority > priority_max) |
419 | priority = priority_max; | |
420 | else if (priority < priority_min) | |
421 | priority = priority_min; | |
422 | params.sched_priority = priority; | |
423 | ||
424 | /* | |
425 | * The solaris 7 and several other man pages incorrectly state that | |
426 | * this should be a pointer to policy but pthread.h is universally | |
427 | * at odds with this. | |
428 | */ | |
72b16773 | 429 | if (__gthrw_(pthread_setschedparam) (thread_id, policy, ¶ms) == 0) |
fe83a9ce KH |
430 | return 0; |
431 | } | |
c95d07f8 | 432 | #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ |
45863ba3 | 433 | #endif /* _POSIX_PRIORITY_SCHEDULING */ |
fe83a9ce KH |
434 | return -1; |
435 | } | |
15794a95 L |
436 | } |
437 | ||
71287280 | 438 | /* Return the current thread's priority. */ |
15794a95 | 439 | static inline int |
fe83a9ce | 440 | __gthread_objc_thread_get_priority (void) |
15794a95 | 441 | { |
45863ba3 | 442 | #ifdef _POSIX_PRIORITY_SCHEDULING |
c95d07f8 | 443 | #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING |
15794a95 | 444 | if (__gthread_active_p ()) |
447c11a5 OP |
445 | { |
446 | int policy; | |
447 | struct sched_param params; | |
448 | ||
72b16773 | 449 | if (__gthrw_(pthread_getschedparam) (__gthrw_(pthread_self) (), &policy, ¶ms) == 0) |
589005ff | 450 | return params.sched_priority; |
447c11a5 | 451 | else |
589005ff | 452 | return -1; |
447c11a5 | 453 | } |
15794a95 | 454 | else |
c95d07f8 | 455 | #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ |
45863ba3 | 456 | #endif /* _POSIX_PRIORITY_SCHEDULING */ |
15794a95 L |
457 | return OBJC_THREAD_INTERACTIVE_PRIORITY; |
458 | } | |
459 | ||
71287280 | 460 | /* Yield our process time to another thread. */ |
15794a95 | 461 | static inline void |
fe83a9ce | 462 | __gthread_objc_thread_yield (void) |
15794a95 L |
463 | { |
464 | if (__gthread_active_p ()) | |
72b16773 | 465 | __gthrw_(sched_yield) (); |
15794a95 L |
466 | } |
467 | ||
71287280 | 468 | /* Terminate the current thread. */ |
15794a95 | 469 | static inline int |
fe83a9ce | 470 | __gthread_objc_thread_exit (void) |
15794a95 L |
471 | { |
472 | if (__gthread_active_p ()) | |
473 | /* exit the thread */ | |
72b16773 | 474 | __gthrw_(pthread_exit) (&__objc_thread_exit_status); |
15794a95 L |
475 | |
476 | /* Failed if we reached here */ | |
477 | return -1; | |
478 | } | |
479 | ||
71287280 | 480 | /* Returns an integer value which uniquely describes a thread. */ |
15794a95 | 481 | static inline objc_thread_t |
fe83a9ce | 482 | __gthread_objc_thread_id (void) |
15794a95 L |
483 | { |
484 | if (__gthread_active_p ()) | |
72b16773 | 485 | return (objc_thread_t) __gthrw_(pthread_self) (); |
15794a95 | 486 | else |
fee013ef | 487 | return (objc_thread_t) 1; |
15794a95 L |
488 | } |
489 | ||
71287280 | 490 | /* Sets the thread's local storage pointer. */ |
15794a95 | 491 | static inline int |
fe83a9ce | 492 | __gthread_objc_thread_set_data (void *value) |
15794a95 L |
493 | { |
494 | if (__gthread_active_p ()) | |
72b16773 | 495 | return __gthrw_(pthread_setspecific) (_objc_thread_storage, value); |
15794a95 L |
496 | else |
497 | { | |
498 | thread_local_storage = value; | |
499 | return 0; | |
500 | } | |
501 | } | |
502 | ||
71287280 | 503 | /* Returns the thread's local storage pointer. */ |
15794a95 | 504 | static inline void * |
fe83a9ce | 505 | __gthread_objc_thread_get_data (void) |
15794a95 L |
506 | { |
507 | if (__gthread_active_p ()) | |
72b16773 | 508 | return __gthrw_(pthread_getspecific) (_objc_thread_storage); |
15794a95 L |
509 | else |
510 | return thread_local_storage; | |
511 | } | |
512 | ||
513 | /* Backend mutex functions */ | |
514 | ||
71287280 | 515 | /* Allocate a mutex. */ |
15794a95 | 516 | static inline int |
fe83a9ce | 517 | __gthread_objc_mutex_allocate (objc_mutex_t mutex) |
15794a95 L |
518 | { |
519 | if (__gthread_active_p ()) | |
520 | { | |
fe83a9ce | 521 | mutex->backend = objc_malloc (sizeof (pthread_mutex_t)); |
15794a95 | 522 | |
72b16773 | 523 | if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, NULL)) |
15794a95 | 524 | { |
fe83a9ce | 525 | objc_free (mutex->backend); |
15794a95 L |
526 | mutex->backend = NULL; |
527 | return -1; | |
528 | } | |
529 | } | |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
71287280 | 534 | /* Deallocate a mutex. */ |
15794a95 | 535 | static inline int |
fe83a9ce | 536 | __gthread_objc_mutex_deallocate (objc_mutex_t mutex) |
15794a95 L |
537 | { |
538 | if (__gthread_active_p ()) | |
539 | { | |
540 | int count; | |
541 | ||
542 | /* | |
543 | * Posix Threads specifically require that the thread be unlocked | |
72b16773 | 544 | * for __gthrw_(pthread_mutex_destroy) to work. |
15794a95 L |
545 | */ |
546 | ||
547 | do | |
548 | { | |
72b16773 | 549 | count = __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend); |
15794a95 L |
550 | if (count < 0) |
551 | return -1; | |
552 | } | |
553 | while (count); | |
554 | ||
72b16773 | 555 | if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend)) |
15794a95 L |
556 | return -1; |
557 | ||
fe83a9ce | 558 | objc_free (mutex->backend); |
15794a95 L |
559 | mutex->backend = NULL; |
560 | } | |
561 | return 0; | |
562 | } | |
563 | ||
71287280 | 564 | /* Grab a lock on a mutex. */ |
15794a95 | 565 | static inline int |
fe83a9ce | 566 | __gthread_objc_mutex_lock (objc_mutex_t mutex) |
15794a95 | 567 | { |
589005ff | 568 | if (__gthread_active_p () |
72b16773 | 569 | && __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend) != 0) |
054af139 NP |
570 | { |
571 | return -1; | |
572 | } | |
573 | ||
574 | return 0; | |
15794a95 L |
575 | } |
576 | ||
71287280 | 577 | /* Try to grab a lock on a mutex. */ |
15794a95 | 578 | static inline int |
fe83a9ce | 579 | __gthread_objc_mutex_trylock (objc_mutex_t mutex) |
15794a95 | 580 | { |
589005ff | 581 | if (__gthread_active_p () |
72b16773 | 582 | && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 0) |
054af139 NP |
583 | { |
584 | return -1; | |
585 | } | |
586 | ||
587 | return 0; | |
15794a95 L |
588 | } |
589 | ||
590 | /* Unlock the mutex */ | |
591 | static inline int | |
fe83a9ce | 592 | __gthread_objc_mutex_unlock (objc_mutex_t mutex) |
15794a95 | 593 | { |
589005ff | 594 | if (__gthread_active_p () |
72b16773 | 595 | && __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend) != 0) |
054af139 NP |
596 | { |
597 | return -1; | |
598 | } | |
599 | ||
600 | return 0; | |
15794a95 L |
601 | } |
602 | ||
603 | /* Backend condition mutex functions */ | |
604 | ||
71287280 | 605 | /* Allocate a condition. */ |
15794a95 | 606 | static inline int |
fe83a9ce | 607 | __gthread_objc_condition_allocate (objc_condition_t condition) |
15794a95 L |
608 | { |
609 | if (__gthread_active_p ()) | |
610 | { | |
fe83a9ce | 611 | condition->backend = objc_malloc (sizeof (pthread_cond_t)); |
15794a95 | 612 | |
72b16773 | 613 | if (__gthrw_(pthread_cond_init) ((pthread_cond_t *) condition->backend, NULL)) |
15794a95 | 614 | { |
fe83a9ce | 615 | objc_free (condition->backend); |
15794a95 L |
616 | condition->backend = NULL; |
617 | return -1; | |
618 | } | |
619 | } | |
620 | ||
621 | return 0; | |
622 | } | |
623 | ||
71287280 | 624 | /* Deallocate a condition. */ |
15794a95 | 625 | static inline int |
fe83a9ce | 626 | __gthread_objc_condition_deallocate (objc_condition_t condition) |
15794a95 L |
627 | { |
628 | if (__gthread_active_p ()) | |
629 | { | |
72b16773 | 630 | if (__gthrw_(pthread_cond_destroy) ((pthread_cond_t *) condition->backend)) |
15794a95 L |
631 | return -1; |
632 | ||
fe83a9ce | 633 | objc_free (condition->backend); |
15794a95 L |
634 | condition->backend = NULL; |
635 | } | |
636 | return 0; | |
637 | } | |
638 | ||
639 | /* Wait on the condition */ | |
640 | static inline int | |
fe83a9ce | 641 | __gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex) |
15794a95 L |
642 | { |
643 | if (__gthread_active_p ()) | |
72b16773 | 644 | return __gthrw_(pthread_cond_wait) ((pthread_cond_t *) condition->backend, |
fe83a9ce | 645 | (pthread_mutex_t *) mutex->backend); |
15794a95 L |
646 | else |
647 | return 0; | |
648 | } | |
649 | ||
71287280 | 650 | /* Wake up all threads waiting on this condition. */ |
15794a95 | 651 | static inline int |
fe83a9ce | 652 | __gthread_objc_condition_broadcast (objc_condition_t condition) |
15794a95 L |
653 | { |
654 | if (__gthread_active_p ()) | |
72b16773 | 655 | return __gthrw_(pthread_cond_broadcast) ((pthread_cond_t *) condition->backend); |
15794a95 L |
656 | else |
657 | return 0; | |
658 | } | |
659 | ||
71287280 | 660 | /* Wake up one thread waiting on this condition. */ |
15794a95 | 661 | static inline int |
fe83a9ce | 662 | __gthread_objc_condition_signal (objc_condition_t condition) |
15794a95 L |
663 | { |
664 | if (__gthread_active_p ()) | |
72b16773 | 665 | return __gthrw_(pthread_cond_signal) ((pthread_cond_t *) condition->backend); |
15794a95 L |
666 | else |
667 | return 0; | |
668 | } | |
669 | ||
670 | #else /* _LIBOBJC */ | |
671 | ||
a75150ae | 672 | static inline int |
09e361bb JJ |
673 | __gthread_create (__gthread_t *__threadid, void *(*__func) (void*), |
674 | void *__args) | |
a75150ae | 675 | { |
09e361bb | 676 | return __gthrw_(pthread_create) (__threadid, NULL, __func, __args); |
a75150ae CF |
677 | } |
678 | ||
679 | static inline int | |
09e361bb | 680 | __gthread_join (__gthread_t __threadid, void **__value_ptr) |
a75150ae | 681 | { |
09e361bb | 682 | return __gthrw_(pthread_join) (__threadid, __value_ptr); |
a75150ae CF |
683 | } |
684 | ||
685 | static inline int | |
09e361bb | 686 | __gthread_detach (__gthread_t __threadid) |
a75150ae | 687 | { |
09e361bb | 688 | return __gthrw_(pthread_detach) (__threadid); |
a75150ae CF |
689 | } |
690 | ||
691 | static inline int | |
09e361bb | 692 | __gthread_equal (__gthread_t __t1, __gthread_t __t2) |
a75150ae | 693 | { |
09e361bb | 694 | return __gthrw_(pthread_equal) (__t1, __t2); |
a75150ae CF |
695 | } |
696 | ||
697 | static inline __gthread_t | |
698 | __gthread_self (void) | |
699 | { | |
700 | return __gthrw_(pthread_self) (); | |
701 | } | |
702 | ||
703 | static inline int | |
704 | __gthread_yield (void) | |
705 | { | |
706 | return __gthrw_(sched_yield) (); | |
707 | } | |
708 | ||
f24af81b | 709 | static inline int |
09e361bb | 710 | __gthread_once (__gthread_once_t *__once, void (*__func) (void)) |
f24af81b TT |
711 | { |
712 | if (__gthread_active_p ()) | |
09e361bb | 713 | return __gthrw_(pthread_once) (__once, __func); |
f24af81b TT |
714 | else |
715 | return -1; | |
716 | } | |
717 | ||
718 | static inline int | |
09e361bb | 719 | __gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) |
f24af81b | 720 | { |
09e361bb | 721 | return __gthrw_(pthread_key_create) (__key, __dtor); |
f24af81b TT |
722 | } |
723 | ||
f24af81b | 724 | static inline int |
09e361bb | 725 | __gthread_key_delete (__gthread_key_t __key) |
f24af81b | 726 | { |
09e361bb | 727 | return __gthrw_(pthread_key_delete) (__key); |
f24af81b TT |
728 | } |
729 | ||
730 | static inline void * | |
09e361bb | 731 | __gthread_getspecific (__gthread_key_t __key) |
f24af81b | 732 | { |
09e361bb | 733 | return __gthrw_(pthread_getspecific) (__key); |
f24af81b TT |
734 | } |
735 | ||
736 | static inline int | |
09e361bb | 737 | __gthread_setspecific (__gthread_key_t __key, const void *__ptr) |
f24af81b | 738 | { |
09e361bb | 739 | return __gthrw_(pthread_setspecific) (__key, __ptr); |
f24af81b TT |
740 | } |
741 | ||
b59cbd50 JW |
742 | static inline void |
743 | __gthread_mutex_init_function (__gthread_mutex_t *__mutex) | |
744 | { | |
745 | if (__gthread_active_p ()) | |
746 | __gthrw_(pthread_mutex_init) (__mutex, NULL); | |
747 | } | |
33e3e24d | 748 | |
4dabf736 | 749 | static inline int |
09e361bb | 750 | __gthread_mutex_destroy (__gthread_mutex_t *__mutex) |
4dabf736 JB |
751 | { |
752 | if (__gthread_active_p ()) | |
09e361bb | 753 | return __gthrw_(pthread_mutex_destroy) (__mutex); |
4dabf736 JB |
754 | else |
755 | return 0; | |
756 | } | |
757 | ||
f24af81b | 758 | static inline int |
09e361bb | 759 | __gthread_mutex_lock (__gthread_mutex_t *__mutex) |
f24af81b TT |
760 | { |
761 | if (__gthread_active_p ()) | |
09e361bb | 762 | return __gthrw_(pthread_mutex_lock) (__mutex); |
f24af81b TT |
763 | else |
764 | return 0; | |
765 | } | |
766 | ||
767 | static inline int | |
09e361bb | 768 | __gthread_mutex_trylock (__gthread_mutex_t *__mutex) |
f24af81b TT |
769 | { |
770 | if (__gthread_active_p ()) | |
09e361bb | 771 | return __gthrw_(pthread_mutex_trylock) (__mutex); |
f24af81b TT |
772 | else |
773 | return 0; | |
774 | } | |
775 | ||
6545e33e | 776 | #if _GTHREAD_USE_MUTEX_TIMEDLOCK |
a75150ae | 777 | static inline int |
09e361bb JJ |
778 | __gthread_mutex_timedlock (__gthread_mutex_t *__mutex, |
779 | const __gthread_time_t *__abs_timeout) | |
a75150ae CF |
780 | { |
781 | if (__gthread_active_p ()) | |
09e361bb | 782 | return __gthrw_(pthread_mutex_timedlock) (__mutex, __abs_timeout); |
a75150ae CF |
783 | else |
784 | return 0; | |
785 | } | |
786 | #endif | |
787 | ||
f24af81b | 788 | static inline int |
09e361bb | 789 | __gthread_mutex_unlock (__gthread_mutex_t *__mutex) |
f24af81b TT |
790 | { |
791 | if (__gthread_active_p ()) | |
09e361bb | 792 | return __gthrw_(pthread_mutex_unlock) (__mutex); |
f24af81b TT |
793 | else |
794 | return 0; | |
795 | } | |
796 | ||
b59cbd50 JW |
797 | #if !defined( PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP) \ |
798 | || defined(_GTHREAD_USE_RECURSIVE_MUTEX_INIT_FUNC) | |
40aac948 | 799 | static inline int |
09e361bb | 800 | __gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) |
40aac948 JM |
801 | { |
802 | if (__gthread_active_p ()) | |
803 | { | |
09e361bb JJ |
804 | pthread_mutexattr_t __attr; |
805 | int __r; | |
806 | ||
807 | __r = __gthrw_(pthread_mutexattr_init) (&__attr); | |
808 | if (!__r) | |
809 | __r = __gthrw_(pthread_mutexattr_settype) (&__attr, | |
810 | PTHREAD_MUTEX_RECURSIVE); | |
811 | if (!__r) | |
812 | __r = __gthrw_(pthread_mutex_init) (__mutex, &__attr); | |
813 | if (!__r) | |
814 | __r = __gthrw_(pthread_mutexattr_destroy) (&__attr); | |
815 | return __r; | |
40aac948 | 816 | } |
7c68fabb | 817 | return 0; |
40aac948 JM |
818 | } |
819 | #endif | |
820 | ||
821 | static inline int | |
09e361bb | 822 | __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) |
40aac948 | 823 | { |
09e361bb | 824 | return __gthread_mutex_lock (__mutex); |
40aac948 JM |
825 | } |
826 | ||
827 | static inline int | |
09e361bb | 828 | __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) |
40aac948 | 829 | { |
09e361bb | 830 | return __gthread_mutex_trylock (__mutex); |
40aac948 JM |
831 | } |
832 | ||
6545e33e | 833 | #if _GTHREAD_USE_MUTEX_TIMEDLOCK |
a75150ae | 834 | static inline int |
09e361bb JJ |
835 | __gthread_recursive_mutex_timedlock (__gthread_recursive_mutex_t *__mutex, |
836 | const __gthread_time_t *__abs_timeout) | |
a75150ae | 837 | { |
09e361bb | 838 | return __gthread_mutex_timedlock (__mutex, __abs_timeout); |
a75150ae CF |
839 | } |
840 | #endif | |
841 | ||
40aac948 | 842 | static inline int |
09e361bb | 843 | __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) |
40aac948 | 844 | { |
09e361bb | 845 | return __gthread_mutex_unlock (__mutex); |
40aac948 JM |
846 | } |
847 | ||
1504e3e1 JW |
848 | static inline int |
849 | __gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *__mutex) | |
850 | { | |
851 | return __gthread_mutex_destroy (__mutex); | |
852 | } | |
853 | ||
b59cbd50 JW |
854 | #ifdef _GTHREAD_USE_COND_INIT_FUNC |
855 | static inline void | |
856 | __gthread_cond_init_function (__gthread_cond_t *__cond) | |
857 | { | |
858 | if (__gthread_active_p ()) | |
859 | __gthrw_(pthread_cond_init) (__cond, NULL); | |
860 | } | |
861 | #endif | |
862 | ||
afd82ef5 | 863 | static inline int |
09e361bb | 864 | __gthread_cond_broadcast (__gthread_cond_t *__cond) |
afd82ef5 | 865 | { |
09e361bb | 866 | return __gthrw_(pthread_cond_broadcast) (__cond); |
afd82ef5 DK |
867 | } |
868 | ||
a75150ae | 869 | static inline int |
09e361bb | 870 | __gthread_cond_signal (__gthread_cond_t *__cond) |
a75150ae | 871 | { |
09e361bb | 872 | return __gthrw_(pthread_cond_signal) (__cond); |
a75150ae CF |
873 | } |
874 | ||
afd82ef5 | 875 | static inline int |
09e361bb | 876 | __gthread_cond_wait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex) |
afd82ef5 | 877 | { |
09e361bb | 878 | return __gthrw_(pthread_cond_wait) (__cond, __mutex); |
afd82ef5 DK |
879 | } |
880 | ||
a75150ae | 881 | static inline int |
09e361bb JJ |
882 | __gthread_cond_timedwait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex, |
883 | const __gthread_time_t *__abs_timeout) | |
a75150ae | 884 | { |
09e361bb | 885 | return __gthrw_(pthread_cond_timedwait) (__cond, __mutex, __abs_timeout); |
a75150ae CF |
886 | } |
887 | ||
afd82ef5 | 888 | static inline int |
09e361bb JJ |
889 | __gthread_cond_wait_recursive (__gthread_cond_t *__cond, |
890 | __gthread_recursive_mutex_t *__mutex) | |
afd82ef5 | 891 | { |
09e361bb | 892 | return __gthread_cond_wait (__cond, __mutex); |
afd82ef5 DK |
893 | } |
894 | ||
a75150ae | 895 | static inline int |
09e361bb | 896 | __gthread_cond_destroy (__gthread_cond_t* __cond) |
a75150ae | 897 | { |
09e361bb | 898 | return __gthrw_(pthread_cond_destroy) (__cond); |
a75150ae CF |
899 | } |
900 | ||
b806c88f LZ |
901 | #ifndef __cplusplus |
902 | static inline int | |
903 | __gthread_rwlock_rdlock (__gthread_rwlock_t *__rwlock) | |
904 | { | |
905 | if (__gthread_active_p ()) | |
906 | return __gthrw_(pthread_rwlock_rdlock) (__rwlock); | |
907 | else | |
908 | return 0; | |
909 | } | |
910 | ||
911 | static inline int | |
912 | __gthread_rwlock_tryrdlock (__gthread_rwlock_t *__rwlock) | |
913 | { | |
914 | if (__gthread_active_p ()) | |
915 | return __gthrw_(pthread_rwlock_tryrdlock) (__rwlock); | |
916 | else | |
917 | return 0; | |
918 | } | |
919 | ||
920 | static inline int | |
921 | __gthread_rwlock_wrlock (__gthread_rwlock_t *__rwlock) | |
922 | { | |
923 | if (__gthread_active_p ()) | |
924 | return __gthrw_(pthread_rwlock_wrlock) (__rwlock); | |
925 | else | |
926 | return 0; | |
927 | } | |
928 | ||
929 | static inline int | |
930 | __gthread_rwlock_trywrlock (__gthread_rwlock_t *__rwlock) | |
931 | { | |
932 | if (__gthread_active_p ()) | |
933 | return __gthrw_(pthread_rwlock_trywrlock) (__rwlock); | |
934 | else | |
935 | return 0; | |
936 | } | |
937 | ||
938 | static inline int | |
939 | __gthread_rwlock_unlock (__gthread_rwlock_t *__rwlock) | |
940 | { | |
941 | if (__gthread_active_p ()) | |
942 | return __gthrw_(pthread_rwlock_unlock) (__rwlock); | |
943 | else | |
944 | return 0; | |
945 | } | |
946 | #endif | |
947 | ||
15794a95 L |
948 | #endif /* _LIBOBJC */ |
949 | ||
88657302 | 950 | #endif /* ! GCC_GTHR_POSIX_H */ |