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Commit | Line | Data |
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7b80d68f | 1 | /* thread.cc: Locking and threading module functions |
1fd5e000 | 2 | |
e136dbc2 | 3 | Copyright 1998, 1999, 2000, 2001, 2002, 2003 Red Hat, Inc. |
1fd5e000 | 4 | |
94b03f23 | 5 | Originally written by Marco Fuykschot <marco@ddi.nl> |
7b80d68f | 6 | Substantialy enhanced by Robert Collins <rbtcollins@hotmail.com> |
1fd5e000 CF |
7 | |
8 | This file is part of Cygwin. | |
9 | ||
10 | This software is a copyrighted work licensed under the terms of the | |
11 | Cygwin license. Please consult the file "CYGWIN_LICENSE" for | |
12 | details. */ | |
13 | ||
ff6e295e | 14 | /* Implementation overview and caveats: |
5c83f260 | 15 | |
ff6e295e CF |
16 | Win32 puts some contraints on what can and cannot be implemented. Where |
17 | possible we work around those contrainsts. Where we cannot work around | |
18 | the constraints we either pretend to be conformant, or return an error | |
19 | code. | |
5c83f260 | 20 | |
ff6e295e CF |
21 | Some caveats: PROCESS_SHARED objects while they pretend to be process |
22 | shared, may not actually work. Some test cases are needed to determine | |
23 | win32's behaviour. My suspicion is that the win32 handle needs to be | |
24 | opened with different flags for proper operation. | |
5c83f260 | 25 | |
ff6e295e | 26 | R.Collins, April 2001. */ |
5c83f260 | 27 | |
1fd5e000 CF |
28 | #ifdef HAVE_CONFIG_H |
29 | # include "config.h" | |
30 | #endif | |
31 | ||
1fd5e000 | 32 | #include "winsup.h" |
a5e570bc | 33 | #include <limits.h> |
9a08b2c0 | 34 | #include "cygerrno.h" |
1fd5e000 | 35 | #include <assert.h> |
1fd5e000 CF |
36 | #include <stdlib.h> |
37 | #include <syslog.h> | |
e2ebe117 | 38 | #include "pinfo.h" |
f0338f54 CF |
39 | #include "perprocess.h" |
40 | #include "security.h" | |
9a08b2c0 | 41 | #include <semaphore.h> |
9450ad0d | 42 | #include <stdio.h> |
462f4eff | 43 | #include <sys/timeb.h> |
1fd5e000 CF |
44 | |
45 | extern int threadsafe; | |
46 | ||
c433f461 CF |
47 | extern "C" struct _reent * |
48 | __getreent () | |
1fd5e000 | 49 | { |
9a08b2c0 | 50 | struct __reent_t *_r = |
f8c8e13b | 51 | (struct __reent_t *) MT_INTERFACE->reent_key.get (); |
1fd5e000 | 52 | |
1fd5e000 | 53 | if (_r == 0) |
c433f461 CF |
54 | { |
55 | #ifdef _CYG_THREAD_FAILSAFE | |
56 | system_printf ("local thread storage not inited"); | |
1fd5e000 | 57 | #endif |
c433f461 CF |
58 | /* Return _impure_ptr as long as MTinterface is not initialized */ |
59 | return _impure_ptr; | |
60 | } | |
61 | ||
1fd5e000 | 62 | return _r->_clib; |
166b2571 | 63 | } |
1fd5e000 CF |
64 | |
65 | struct _winsup_t * | |
66 | _reent_winsup () | |
67 | { | |
f8c8e13b RC |
68 | struct __reent_t *_r = |
69 | (struct __reent_t *) MT_INTERFACE->reent_key.get (); | |
70 | ||
1fd5e000 | 71 | if (_r == 0) |
c433f461 CF |
72 | { |
73 | #ifdef _CYG_THREAD_FAILSAFE | |
74 | system_printf ("local thread storage not inited"); | |
1fd5e000 | 75 | #endif |
c433f461 CF |
76 | return NULL; |
77 | } | |
78 | ||
1fd5e000 | 79 | return _r->_winsup; |
166b2571 | 80 | } |
1fd5e000 | 81 | |
ed9fe455 | 82 | bool |
15648790 | 83 | native_mutex::init () |
ed9fe455 TP |
84 | { |
85 | theHandle = CreateMutex (&sec_none_nih, FALSE, NULL); | |
86 | if (!theHandle) | |
87 | { | |
88 | debug_printf ("CreateMutex failed. %E"); | |
89 | return false; | |
90 | } | |
91 | return true; | |
92 | } | |
93 | ||
94 | bool | |
15648790 | 95 | native_mutex::lock () |
ed9fe455 TP |
96 | { |
97 | DWORD waitResult = WaitForSingleObject (theHandle, INFINITE); | |
98 | if (waitResult != WAIT_OBJECT_0) | |
99 | { | |
100 | system_printf ("Received unexpected wait result %d on handle %p, %E", waitResult, theHandle); | |
101 | return false; | |
102 | } | |
103 | return true; | |
104 | } | |
105 | ||
106 | void | |
15648790 | 107 | native_mutex::unlock () |
ed9fe455 TP |
108 | { |
109 | if (!ReleaseMutex (theHandle)) | |
110 | system_printf ("Received a unexpected result releasing mutex. %E"); | |
111 | } | |
112 | ||
91892f50 CF |
113 | inline LPCRITICAL_SECTION |
114 | ResourceLocks::Lock (int _resid) | |
115 | { | |
116 | #ifdef _CYG_THREAD_FAILSAFE | |
117 | if (!inited) | |
118 | system_printf ("lock called before initialization"); | |
119 | ||
9a08b2c0 CF |
120 | thread_printf |
121 | ("Get Resource lock %d ==> %p for %p , real : %d , threadid %d ", _resid, | |
122 | &lock, user_data, myself->pid, GetCurrentThreadId ()); | |
91892f50 CF |
123 | #endif |
124 | return &lock; | |
166b2571 | 125 | } |
91892f50 | 126 | |
1fd5e000 CF |
127 | void |
128 | SetResourceLock (int _res_id, int _mode, const char *_function) | |
129 | { | |
91892f50 CF |
130 | #ifdef _CYG_THREAD_FAILSAFE |
131 | thread_printf ("Set resource lock %d mode %d for %s start", | |
132 | _res_id, _mode, _function); | |
1fd5e000 | 133 | #endif |
1fd5e000 CF |
134 | EnterCriticalSection (user_data->resourcelocks->Lock (_res_id)); |
135 | ||
136 | #ifdef _CYG_THREAD_FAILSAFE | |
137 | user_data->resourcelocks->owner = GetCurrentThreadId (); | |
138 | user_data->resourcelocks->count++; | |
139 | #endif | |
140 | } | |
141 | ||
142 | void | |
143 | ReleaseResourceLock (int _res_id, int _mode, const char *_function) | |
144 | { | |
91892f50 | 145 | #ifdef _CYG_THREAD_FAILSAFE |
9a08b2c0 CF |
146 | thread_printf ("Release resource lock %d mode %d for %s done", _res_id, |
147 | _mode, _function); | |
1fd5e000 | 148 | |
1fd5e000 CF |
149 | AssertResourceOwner (_res_id, _mode); |
150 | user_data->resourcelocks->count--; | |
151 | if (user_data->resourcelocks->count == 0) | |
152 | user_data->resourcelocks->owner = 0; | |
153 | #endif | |
154 | ||
155 | LeaveCriticalSection (user_data->resourcelocks->Lock (_res_id)); | |
166b2571 | 156 | } |
1fd5e000 CF |
157 | |
158 | #ifdef _CYG_THREAD_FAILSAFE | |
159 | void | |
160 | AssertResourceOwner (int _res_id, int _mode) | |
161 | { | |
162 | ||
9a08b2c0 CF |
163 | thread_printf |
164 | ("Assert Resource lock %d ==> for %p , real : %d , threadid %d count %d owner %d", | |
165 | _res_id, user_data, myself->pid, GetCurrentThreadId (), | |
166 | user_data->resourcelocks->count, user_data->resourcelocks->owner); | |
1fd5e000 | 167 | if (user_data && (user_data->resourcelocks->owner != GetCurrentThreadId ())) |
91892f50 | 168 | system_printf ("assertion failed, not the resource owner"); |
1fd5e000 CF |
169 | } |
170 | ||
171 | #endif | |
172 | ||
1fd5e000 CF |
173 | void |
174 | ResourceLocks::Init () | |
175 | { | |
1fd5e000 CF |
176 | InitializeCriticalSection (&lock); |
177 | inited = true; | |
178 | ||
179 | #ifdef _CYG_THREAD_FAILSAFE | |
180 | owner = 0; | |
181 | count = 0; | |
182 | #endif | |
183 | ||
166b2571 CF |
184 | thread_printf ("lock %p inited by %p , %d", &lock, user_data, myself->pid); |
185 | } | |
1fd5e000 CF |
186 | |
187 | void | |
188 | ResourceLocks::Delete () | |
189 | { | |
190 | if (inited) | |
191 | { | |
192 | thread_printf ("Close Resource Locks %p ", &lock); | |
193 | DeleteCriticalSection (&lock); | |
194 | inited = false; | |
91892f50 | 195 | } |
166b2571 | 196 | } |
1fd5e000 | 197 | |
1fd5e000 | 198 | void |
c8fa3426 | 199 | MTinterface::Init () |
1fd5e000 | 200 | { |
1fd5e000 CF |
201 | reents._clib = _impure_ptr; |
202 | reents._winsup = &winsup_reent; | |
1fd5e000 | 203 | winsup_reent._process_logmask = LOG_UPTO (LOG_DEBUG); |
c8fa3426 | 204 | reent_key.set (&reents); |
9a08b2c0 | 205 | |
15648790 TP |
206 | pthread_mutex::init_mutex (); |
207 | pthread_cond::init_mutex (); | |
208 | pthread_rwlock::init_mutex (); | |
166b2571 | 209 | } |
1fd5e000 | 210 | |
f1f13795 RC |
211 | void |
212 | MTinterface::fixup_before_fork (void) | |
213 | { | |
214 | pthread_key::fixup_before_fork (); | |
215 | } | |
216 | ||
f9229ef7 RC |
217 | /* This function is called from a single threaded process */ |
218 | void | |
219 | MTinterface::fixup_after_fork (void) | |
220 | { | |
f1f13795 | 221 | pthread_key::fixup_after_fork (); |
88243328 | 222 | |
c433f461 CF |
223 | #ifndef __SIGNALS_ARE_MULTITHREADED__ |
224 | /* As long as the signal handling not multithreaded | |
225 | switch reents storage back to _impure_ptr for the mainthread | |
226 | to support fork from threads other than the mainthread */ | |
227 | struct _reent *reent_old = __getreent (); | |
228 | ||
229 | if (reent_old && _impure_ptr != reent_old) | |
230 | *_impure_ptr = *reent_old; | |
231 | reents._clib = _impure_ptr; | |
232 | reents._winsup = &winsup_reent; | |
233 | winsup_reent._process_logmask = LOG_UPTO (LOG_DEBUG); | |
234 | reent_key.set (&reents); | |
235 | #endif | |
236 | ||
88243328 | 237 | threadcount = 1; |
c8fa3426 | 238 | pthread::init_mainthread (); |
88243328 | 239 | |
e1e196a2 | 240 | pthread::fixup_after_fork (); |
9306ba2e TP |
241 | pthread_mutex::fixup_after_fork (); |
242 | pthread_cond::fixup_after_fork (); | |
243 | pthread_rwlock::fixup_after_fork (); | |
244 | semaphore::fixup_after_fork (); | |
f9229ef7 RC |
245 | } |
246 | ||
007276b3 RC |
247 | /* pthread calls */ |
248 | ||
249 | /* static methods */ | |
4e786173 | 250 | void |
c8fa3426 | 251 | pthread::init_mainthread () |
4e786173 | 252 | { |
15648790 | 253 | pthread *thread = get_tls_self_pointer (); |
f8c8e13b RC |
254 | if (!thread) |
255 | { | |
256 | thread = new pthread (); | |
257 | if (!thread) | |
9a47ce7f | 258 | api_fatal ("failed to create mainthread object"); |
f8c8e13b RC |
259 | } |
260 | ||
15648790 | 261 | thread->init_current_thread (); |
4e786173 | 262 | } |
007276b3 RC |
263 | |
264 | pthread * | |
265 | pthread::self () | |
266 | { | |
15648790 | 267 | pthread *thread = get_tls_self_pointer (); |
f8c8e13b RC |
268 | if (thread) |
269 | return thread; | |
15648790 | 270 | return pthread_null::get_null_pthread (); |
4e786173 RC |
271 | } |
272 | ||
273 | void | |
15648790 | 274 | pthread::set_tls_self_pointer (pthread *thisThread) |
4e786173 | 275 | { |
f8c8e13b RC |
276 | MT_INTERFACE->thread_self_key.set (thisThread); |
277 | } | |
278 | ||
279 | pthread * | |
15648790 | 280 | pthread::get_tls_self_pointer () |
f8c8e13b RC |
281 | { |
282 | return (pthread *) MT_INTERFACE->thread_self_key.get (); | |
007276b3 RC |
283 | } |
284 | ||
f1f13795 RC |
285 | |
286 | ||
e1e196a2 TP |
287 | List<pthread> pthread::threads; |
288 | ||
007276b3 | 289 | /* member methods */ |
5c83f260 | 290 | pthread::pthread ():verifyable_object (PTHREAD_MAGIC), win32_obj_id (0), |
e1e196a2 | 291 | running (false), suspended (false), |
6299349b | 292 | cancelstate (0), canceltype (0), cancel_event (0), |
e1e196a2 | 293 | joiner (NULL), next (NULL), cleanup_stack (NULL) |
1fd5e000 | 294 | { |
e1e196a2 TP |
295 | if (this != pthread_null::get_null_pthread ()) |
296 | threads.insert (this); | |
9a08b2c0 | 297 | } |
1fd5e000 | 298 | |
9a08b2c0 CF |
299 | pthread::~pthread () |
300 | { | |
301 | if (win32_obj_id) | |
302 | CloseHandle (win32_obj_id); | |
d288c1c7 RC |
303 | if (cancel_event) |
304 | CloseHandle (cancel_event); | |
e1e196a2 TP |
305 | |
306 | if (this != pthread_null::get_null_pthread ()) | |
307 | threads.remove (this); | |
9a08b2c0 | 308 | } |
1fd5e000 | 309 | |
4e786173 | 310 | void |
15648790 | 311 | pthread::set_thread_id_to_current () |
4e786173 RC |
312 | { |
313 | thread_id = GetCurrentThreadId (); | |
314 | } | |
1fd5e000 | 315 | |
9a08b2c0 | 316 | void |
4e786173 | 317 | pthread::precreate (pthread_attr *newattr) |
9a08b2c0 | 318 | { |
f6709c07 RC |
319 | pthread_mutex *verifyable_mutex_obj = &mutex; |
320 | ||
79ed4300 | 321 | /* already running ? */ |
9a08b2c0 CF |
322 | if (win32_obj_id) |
323 | return; | |
1fd5e000 | 324 | |
9a08b2c0 CF |
325 | if (newattr) |
326 | { | |
327 | attr.joinable = newattr->joinable; | |
5c83f260 RC |
328 | attr.contentionscope = newattr->contentionscope; |
329 | attr.inheritsched = newattr->inheritsched; | |
9a08b2c0 CF |
330 | attr.stacksize = newattr->stacksize; |
331 | } | |
1fd5e000 | 332 | |
15648790 | 333 | if (!pthread_mutex::is_good_object (&verifyable_mutex_obj)) |
43c3c4e3 RC |
334 | { |
335 | thread_printf ("New thread object access mutex is not valid. this %p", | |
336 | this); | |
337 | magic = 0; | |
338 | return; | |
339 | } | |
2ff03dc2 TP |
340 | /* Change the mutex type to NORMAL to speed up mutex operations */ |
341 | mutex.type = PTHREAD_MUTEX_NORMAL; | |
43c3c4e3 | 342 | |
bd2b5664 | 343 | cancel_event = ::CreateEvent (&sec_none_nih, TRUE, FALSE, NULL); |
d288c1c7 RC |
344 | if (!cancel_event) |
345 | { | |
79ed4300 CF |
346 | system_printf ("couldn't create cancel event, this %p LastError %E", this); |
347 | /* we need the event for correct behaviour */ | |
d288c1c7 RC |
348 | magic = 0; |
349 | return; | |
350 | } | |
4e786173 RC |
351 | } |
352 | ||
353 | void | |
354 | pthread::create (void *(*func) (void *), pthread_attr *newattr, | |
355 | void *threadarg) | |
d04cf16c | 356 | { |
4e786173 RC |
357 | precreate (newattr); |
358 | if (!magic) | |
359 | return; | |
360 | function = func; | |
361 | arg = threadarg; | |
d288c1c7 | 362 | |
4d029f39 | 363 | win32_obj_id = ::CreateThread (&sec_none_nih, attr.stacksize, |
9a08b2c0 CF |
364 | (LPTHREAD_START_ROUTINE) thread_init_wrapper, |
365 | this, CREATE_SUSPENDED, &thread_id); | |
1fd5e000 | 366 | |
9a08b2c0 | 367 | if (!win32_obj_id) |
196cdd45 CF |
368 | { |
369 | thread_printf ("CreateThread failed: this %p LastError %E", this); | |
370 | magic = 0; | |
371 | } | |
4e786173 RC |
372 | else { |
373 | postcreate (); | |
5c83f260 | 374 | ResumeThread (win32_obj_id); |
4e786173 RC |
375 | } |
376 | } | |
377 | ||
378 | void | |
379 | pthread::postcreate () | |
380 | { | |
e1e196a2 TP |
381 | running = true; |
382 | ||
383 | InterlockedIncrement (&MT_INTERFACE->threadcount); | |
384 | /* FIXME: set the priority appropriately for system contention scope */ | |
385 | if (attr.inheritsched == PTHREAD_EXPLICIT_SCHED) | |
386 | { | |
387 | /* FIXME: set the scheduling settings for the new thread */ | |
388 | /* sched_thread_setparam (win32_obj_id, attr.schedparam); */ | |
389 | } | |
9a08b2c0 | 390 | } |
1fd5e000 | 391 | |
d288c1c7 RC |
392 | void |
393 | pthread::exit (void *value_ptr) | |
394 | { | |
395 | class pthread *thread = this; | |
396 | ||
397 | // run cleanup handlers | |
398 | pop_all_cleanup_handlers (); | |
399 | ||
15648790 | 400 | pthread_key::run_all_destructors (); |
d288c1c7 | 401 | |
15648790 | 402 | mutex.lock (); |
d288c1c7 | 403 | // cleanup if thread is in detached state and not joined |
a4cea440 | 404 | if (equal (joiner, thread)) |
d288c1c7 RC |
405 | delete this; |
406 | else | |
d04cf16c | 407 | { |
e1e196a2 | 408 | running = false; |
d288c1c7 | 409 | return_ptr = value_ptr; |
15648790 | 410 | mutex.unlock (); |
d288c1c7 RC |
411 | } |
412 | ||
413 | if (InterlockedDecrement (&MT_INTERFACE->threadcount) == 0) | |
414 | ::exit (0); | |
415 | else | |
416 | ExitThread (0); | |
417 | } | |
418 | ||
419 | int | |
420 | pthread::cancel (void) | |
421 | { | |
422 | class pthread *thread = this; | |
423 | class pthread *self = pthread::self (); | |
424 | ||
15648790 | 425 | mutex.lock (); |
d288c1c7 | 426 | |
e1e196a2 TP |
427 | if (!running) |
428 | { | |
429 | mutex.unlock (); | |
430 | return 0; | |
431 | } | |
432 | ||
d288c1c7 RC |
433 | if (canceltype == PTHREAD_CANCEL_DEFERRED || |
434 | cancelstate == PTHREAD_CANCEL_DISABLE) | |
435 | { | |
436 | // cancel deferred | |
15648790 | 437 | mutex.unlock (); |
d288c1c7 RC |
438 | SetEvent (cancel_event); |
439 | return 0; | |
440 | } | |
441 | ||
a4cea440 | 442 | else if (equal (thread, self)) |
d288c1c7 | 443 | { |
15648790 | 444 | mutex.unlock (); |
d288c1c7 RC |
445 | cancel_self (); |
446 | return 0; // Never reached | |
447 | } | |
448 | ||
449 | // cancel asynchronous | |
450 | SuspendThread (win32_obj_id); | |
451 | if (WaitForSingleObject (win32_obj_id, 0) == WAIT_TIMEOUT) | |
452 | { | |
453 | CONTEXT context; | |
454 | context.ContextFlags = CONTEXT_CONTROL; | |
455 | GetThreadContext (win32_obj_id, &context); | |
456 | context.Eip = (DWORD) pthread::static_cancel_self; | |
457 | SetThreadContext (win32_obj_id, &context); | |
458 | } | |
15648790 | 459 | mutex.unlock (); |
d288c1c7 RC |
460 | ResumeThread (win32_obj_id); |
461 | ||
462 | return 0; | |
463 | /* | |
464 | TODO: insert pthread_testcancel into the required functions | |
465 | the required function list is: *indicates done, X indicates not present in cygwin. | |
466 | aio_suspend () | |
467 | *close () | |
468 | *creat () | |
469 | fcntl () | |
470 | fsync () | |
471 | getmsg () | |
472 | getpmsg () | |
473 | lockf () | |
474 | mq_receive () | |
475 | mq_send () | |
476 | msgrcv () | |
477 | msgsnd () | |
478 | msync () | |
479 | nanosleep () | |
480 | open () | |
3457ce4d | 481 | *pause () |
d288c1c7 RC |
482 | poll () |
483 | pread () | |
f592b05d TP |
484 | *pthread_cond_timedwait () |
485 | *pthread_cond_wait () | |
d288c1c7 | 486 | *pthread_join () |
e14328f4 | 487 | *pthread_testcancel () |
d288c1c7 RC |
488 | putmsg () |
489 | putpmsg () | |
490 | pwrite () | |
491 | read () | |
492 | readv () | |
493 | select () | |
09cbb9d6 | 494 | *sem_wait () |
3457ce4d TP |
495 | *sigpause () |
496 | *sigsuspend () | |
d288c1c7 RC |
497 | sigtimedwait () |
498 | sigwait () | |
499 | sigwaitinfo () | |
500 | *sleep () | |
e14328f4 | 501 | *system () |
d288c1c7 RC |
502 | tcdrain () |
503 | *usleep () | |
4a3584c8 TP |
504 | *wait () |
505 | *wait3() | |
d288c1c7 | 506 | waitid () |
4a3584c8 | 507 | *waitpid () |
d288c1c7 RC |
508 | write () |
509 | writev () | |
510 | ||
511 | the optional list is: | |
512 | catclose () | |
513 | catgets () | |
514 | catopen () | |
515 | closedir () | |
516 | closelog () | |
517 | ctermid () | |
518 | dbm_close () | |
519 | dbm_delete () | |
520 | dbm_fetch () | |
521 | dbm_nextkey () | |
522 | dbm_open () | |
523 | dbm_store () | |
524 | dlclose () | |
525 | dlopen () | |
526 | endgrent () | |
527 | endpwent () | |
528 | endutxent () | |
529 | fclose () | |
530 | fcntl () | |
531 | fflush () | |
532 | fgetc () | |
533 | fgetpos () | |
534 | fgets () | |
535 | fgetwc () | |
536 | fgetws () | |
537 | fopen () | |
538 | fprintf () | |
539 | fputc () | |
540 | fputs () | |
541 | fputwc () | |
542 | fputws () | |
543 | fread () | |
544 | freopen () | |
545 | fscanf () | |
546 | fseek () | |
547 | fseeko () | |
548 | fsetpos () | |
549 | ftell () | |
550 | ftello () | |
551 | ftw () | |
552 | fwprintf () | |
553 | fwrite () | |
554 | fwscanf () | |
555 | getc () | |
556 | getc_unlocked () | |
557 | getchar () | |
558 | getchar_unlocked () | |
559 | getcwd () | |
560 | getdate () | |
561 | getgrent () | |
562 | getgrgid () | |
563 | getgrgid_r () | |
564 | getgrnam () | |
565 | getgrnam_r () | |
566 | getlogin () | |
567 | getlogin_r () | |
568 | getpwent () | |
569 | *getpwnam () | |
570 | *getpwnam_r () | |
571 | *getpwuid () | |
572 | *getpwuid_r () | |
573 | gets () | |
574 | getutxent () | |
575 | getutxid () | |
576 | getutxline () | |
577 | getw () | |
578 | getwc () | |
579 | getwchar () | |
580 | getwd () | |
581 | glob () | |
582 | iconv_close () | |
583 | iconv_open () | |
584 | ioctl () | |
585 | lseek () | |
586 | mkstemp () | |
587 | nftw () | |
588 | opendir () | |
589 | openlog () | |
590 | pclose () | |
591 | perror () | |
592 | popen () | |
593 | printf () | |
594 | putc () | |
595 | putc_unlocked () | |
596 | putchar () | |
597 | putchar_unlocked () | |
598 | puts () | |
599 | pututxline () | |
600 | putw () | |
601 | putwc () | |
602 | putwchar () | |
603 | readdir () | |
604 | readdir_r () | |
605 | remove () | |
606 | rename () | |
607 | rewind () | |
608 | rewinddir () | |
609 | scanf () | |
610 | seekdir () | |
611 | semop () | |
612 | setgrent () | |
613 | setpwent () | |
614 | setutxent () | |
615 | strerror () | |
616 | syslog () | |
617 | tmpfile () | |
618 | tmpnam () | |
619 | ttyname () | |
620 | ttyname_r () | |
621 | ungetc () | |
622 | ungetwc () | |
623 | unlink () | |
624 | vfprintf () | |
625 | vfwprintf () | |
626 | vprintf () | |
627 | vwprintf () | |
628 | wprintf () | |
629 | wscanf () | |
630 | ||
631 | Note, that for fcntl (), for any value of the cmd argument. | |
632 | ||
633 | And we must not introduce cancellation points anywhere else that's part of the posix or | |
634 | opengroup specs. | |
635 | */ | |
636 | } | |
637 | ||
638 | void | |
639 | pthread::testcancel (void) | |
640 | { | |
641 | if (cancelstate == PTHREAD_CANCEL_DISABLE) | |
642 | return; | |
643 | ||
eff6c00e | 644 | if (WaitForSingleObject (cancel_event, 0) == WAIT_OBJECT_0) |
d288c1c7 RC |
645 | cancel_self (); |
646 | } | |
647 | ||
648 | void | |
649 | pthread::static_cancel_self (void) | |
650 | { | |
f1f13795 | 651 | pthread::self ()->cancel_self (); |
d288c1c7 RC |
652 | } |
653 | ||
654 | ||
9a47ce7f CF |
655 | DWORD |
656 | pthread::cancelable_wait (HANDLE object, DWORD timeout, const bool do_cancel) | |
09cbb9d6 TP |
657 | { |
658 | DWORD res; | |
659 | HANDLE wait_objects[2]; | |
660 | pthread_t thread = self (); | |
661 | ||
15648790 | 662 | if (!is_good_object (&thread) || thread->cancelstate == PTHREAD_CANCEL_DISABLE) |
09cbb9d6 TP |
663 | return WaitForSingleObject (object, timeout); |
664 | ||
665 | // Do not change the wait order | |
666 | // The object must have higher priority than the cancel event, | |
667 | // because WaitForMultipleObjects will return the smallest index | |
668 | // if both objects are signaled | |
669 | wait_objects[0] = object; | |
670 | wait_objects[1] = thread->cancel_event; | |
671 | ||
672 | res = WaitForMultipleObjects (2, wait_objects, FALSE, timeout); | |
673 | if (do_cancel && res == WAIT_CANCELED) | |
674 | pthread::static_cancel_self (); | |
675 | return res; | |
676 | } | |
677 | ||
d288c1c7 RC |
678 | int |
679 | pthread::setcancelstate (int state, int *oldstate) | |
680 | { | |
681 | int result = 0; | |
682 | ||
15648790 | 683 | mutex.lock (); |
d288c1c7 RC |
684 | |
685 | if (state != PTHREAD_CANCEL_ENABLE && state != PTHREAD_CANCEL_DISABLE) | |
686 | result = EINVAL; | |
687 | else | |
688 | { | |
689 | if (oldstate) | |
d04cf16c | 690 | *oldstate = cancelstate; |
d288c1c7 RC |
691 | cancelstate = state; |
692 | } | |
693 | ||
15648790 | 694 | mutex.unlock (); |
d288c1c7 RC |
695 | |
696 | return result; | |
697 | } | |
698 | ||
699 | int | |
700 | pthread::setcanceltype (int type, int *oldtype) | |
701 | { | |
702 | int result = 0; | |
703 | ||
15648790 | 704 | mutex.lock (); |
d288c1c7 RC |
705 | |
706 | if (type != PTHREAD_CANCEL_DEFERRED && type != PTHREAD_CANCEL_ASYNCHRONOUS) | |
707 | result = EINVAL; | |
708 | else | |
709 | { | |
710 | if (oldtype) | |
d04cf16c | 711 | *oldtype = canceltype; |
d288c1c7 RC |
712 | canceltype = type; |
713 | } | |
714 | ||
15648790 | 715 | mutex.unlock (); |
d288c1c7 RC |
716 | |
717 | return result; | |
718 | } | |
719 | ||
007276b3 RC |
720 | void |
721 | pthread::push_cleanup_handler (__pthread_cleanup_handler *handler) | |
722 | { | |
723 | if (this != self ()) | |
724 | // TODO: do it? | |
d04cf16c | 725 | api_fatal ("Attempt to push a cleanup handler across threads"); |
f6709c07 | 726 | handler->next = cleanup_stack; |
79ed4300 | 727 | InterlockedExchangePointer (&cleanup_stack, handler); |
007276b3 RC |
728 | } |
729 | ||
730 | void | |
731 | pthread::pop_cleanup_handler (int const execute) | |
732 | { | |
733 | if (this != self ()) | |
734 | // TODO: send a signal or something to the thread ? | |
735 | api_fatal ("Attempt to execute a cleanup handler across threads"); | |
d04cf16c | 736 | |
15648790 | 737 | mutex.lock (); |
d288c1c7 | 738 | |
f6709c07 | 739 | if (cleanup_stack != NULL) |
007276b3 | 740 | { |
f6709c07 | 741 | __pthread_cleanup_handler *handler = cleanup_stack; |
007276b3 RC |
742 | |
743 | if (execute) | |
d04cf16c | 744 | (*handler->function) (handler->arg); |
f6709c07 | 745 | cleanup_stack = handler->next; |
007276b3 | 746 | } |
d288c1c7 | 747 | |
15648790 | 748 | mutex.unlock (); |
007276b3 RC |
749 | } |
750 | ||
751 | void | |
752 | pthread::pop_all_cleanup_handlers () | |
753 | { | |
f6709c07 | 754 | while (cleanup_stack != NULL) |
007276b3 RC |
755 | pop_cleanup_handler (1); |
756 | } | |
757 | ||
4e786173 | 758 | void |
f1f13795 | 759 | pthread::cancel_self () |
4e786173 RC |
760 | { |
761 | exit (PTHREAD_CANCELED); | |
762 | } | |
763 | ||
764 | DWORD | |
15648790 | 765 | pthread::get_thread_id () |
4e786173 RC |
766 | { |
767 | return thread_id; | |
768 | } | |
769 | ||
f8c8e13b | 770 | void |
15648790 | 771 | pthread::init_current_thread () |
f8c8e13b RC |
772 | { |
773 | cancel_event = ::CreateEvent (&sec_none_nih, TRUE, FALSE, NULL); | |
774 | if (!DuplicateHandle (GetCurrentProcess (), GetCurrentThread (), | |
9a47ce7f CF |
775 | GetCurrentProcess (), &win32_obj_id, |
776 | 0, FALSE, DUPLICATE_SAME_ACCESS)) | |
f8c8e13b | 777 | win32_obj_id = NULL; |
15648790 TP |
778 | set_thread_id_to_current (); |
779 | set_tls_self_pointer (this); | |
f8c8e13b RC |
780 | } |
781 | ||
e1e196a2 TP |
782 | void |
783 | pthread::_fixup_after_fork () | |
784 | { | |
785 | /* set thread to not running if it is not the forking thread */ | |
786 | if (this != pthread::self ()) | |
787 | { | |
788 | magic = 0; | |
789 | running = false; | |
790 | win32_obj_id = NULL; | |
791 | cancel_event = NULL; | |
792 | } | |
793 | } | |
794 | ||
4e2822f1 RC |
795 | /* static members */ |
796 | bool | |
15648790 | 797 | pthread_attr::is_good_object (pthread_attr_t const *attr) |
4e2822f1 RC |
798 | { |
799 | if (verifyable_object_isvalid (attr, PTHREAD_ATTR_MAGIC) != VALID_OBJECT) | |
800 | return false; | |
801 | return true; | |
802 | } | |
803 | ||
804 | /* instance members */ | |
805 | ||
9a08b2c0 | 806 | pthread_attr::pthread_attr ():verifyable_object (PTHREAD_ATTR_MAGIC), |
5c83f260 RC |
807 | joinable (PTHREAD_CREATE_JOINABLE), contentionscope (PTHREAD_SCOPE_PROCESS), |
808 | inheritsched (PTHREAD_INHERIT_SCHED), stacksize (0) | |
9a08b2c0 | 809 | { |
5c83f260 | 810 | schedparam.sched_priority = 0; |
166b2571 | 811 | } |
1fd5e000 | 812 | |
9a08b2c0 | 813 | pthread_attr::~pthread_attr () |
1fd5e000 | 814 | { |
9a08b2c0 | 815 | } |
1fd5e000 | 816 | |
8b1978c3 | 817 | bool |
15648790 | 818 | pthread_condattr::is_good_object (pthread_condattr_t const *attr) |
8b1978c3 RC |
819 | { |
820 | if (verifyable_object_isvalid (attr, PTHREAD_CONDATTR_MAGIC) != VALID_OBJECT) | |
821 | return false; | |
822 | return true; | |
823 | } | |
824 | ||
5c83f260 RC |
825 | pthread_condattr::pthread_condattr ():verifyable_object |
826 | (PTHREAD_CONDATTR_MAGIC), shared (PTHREAD_PROCESS_PRIVATE) | |
9a08b2c0 CF |
827 | { |
828 | } | |
1fd5e000 | 829 | |
9a08b2c0 CF |
830 | pthread_condattr::~pthread_condattr () |
831 | { | |
832 | } | |
1fd5e000 | 833 | |
9306ba2e TP |
834 | List<pthread_cond> pthread_cond::conds; |
835 | ||
ed9fe455 | 836 | /* This is used for cond creation protection within a single process only */ |
15648790 | 837 | native_mutex NO_COPY pthread_cond::cond_initialization_lock; |
ed9fe455 TP |
838 | |
839 | /* We can only be called once. | |
840 | TODO: (no rush) use a non copied memory section to | |
841 | hold an initialization flag. */ | |
842 | void | |
15648790 | 843 | pthread_cond::init_mutex () |
ed9fe455 | 844 | { |
15648790 | 845 | if (!cond_initialization_lock.init ()) |
ed9fe455 TP |
846 | api_fatal ("Could not create win32 Mutex for pthread cond static initializer support."); |
847 | } | |
848 | ||
f592b05d TP |
849 | pthread_cond::pthread_cond (pthread_condattr *attr) : |
850 | verifyable_object (PTHREAD_COND_MAGIC), | |
15648790 TP |
851 | shared (0), waiting (0), pending (0), sem_wait (NULL), |
852 | mtx_cond(NULL), next (NULL) | |
9a08b2c0 | 853 | { |
f592b05d | 854 | pthread_mutex *verifyable_mutex_obj; |
1fd5e000 | 855 | |
f592b05d TP |
856 | if (attr) |
857 | if (attr->shared != PTHREAD_PROCESS_PRIVATE) | |
858 | { | |
859 | magic = 0; | |
860 | return; | |
861 | } | |
862 | ||
15648790 TP |
863 | verifyable_mutex_obj = &mtx_in; |
864 | if (!pthread_mutex::is_good_object (&verifyable_mutex_obj)) | |
68ebd3f6 | 865 | { |
f592b05d | 866 | thread_printf ("Internal cond mutex is not valid. this %p", this); |
32c30349 | 867 | magic = 0; |
f592b05d TP |
868 | return; |
869 | } | |
15648790 TP |
870 | /* |
871 | * Change the mutex type to NORMAL. | |
872 | * This mutex MUST be of type normal | |
873 | */ | |
874 | mtx_in.type = PTHREAD_MUTEX_NORMAL; | |
f592b05d | 875 | |
15648790 TP |
876 | verifyable_mutex_obj = &mtx_out; |
877 | if (!pthread_mutex::is_good_object (&verifyable_mutex_obj)) | |
f592b05d TP |
878 | { |
879 | thread_printf ("Internal cond mutex is not valid. this %p", this); | |
880 | magic = 0; | |
881 | return; | |
882 | } | |
883 | /* Change the mutex type to NORMAL to speed up mutex operations */ | |
15648790 | 884 | mtx_out.type = PTHREAD_MUTEX_NORMAL; |
f592b05d | 885 | |
15648790 TP |
886 | sem_wait = ::CreateSemaphore (&sec_none_nih, 0, LONG_MAX, NULL); |
887 | if (!sem_wait) | |
f592b05d TP |
888 | { |
889 | debug_printf ("CreateSemaphore failed. %E"); | |
890 | magic = 0; | |
891 | return; | |
68ebd3f6 | 892 | } |
1fd5e000 | 893 | |
15648790 | 894 | conds.insert (this); |
9a08b2c0 | 895 | } |
1fd5e000 | 896 | |
9a08b2c0 CF |
897 | pthread_cond::~pthread_cond () |
898 | { | |
15648790 TP |
899 | if (sem_wait) |
900 | CloseHandle (sem_wait); | |
f592b05d | 901 | |
15648790 | 902 | conds.remove (this); |
1fd5e000 CF |
903 | } |
904 | ||
9a08b2c0 | 905 | void |
15648790 | 906 | pthread_cond::unblock (const bool all) |
1fd5e000 | 907 | { |
f592b05d | 908 | unsigned long releaseable; |
1fd5e000 | 909 | |
f592b05d TP |
910 | /* |
911 | * Block outgoing threads (and avoid simultanous unblocks) | |
cbce4980 | 912 | */ |
15648790 | 913 | mtx_out.lock (); |
f592b05d TP |
914 | |
915 | releaseable = waiting - pending; | |
916 | if (releaseable) | |
86336f4f | 917 | { |
f592b05d TP |
918 | unsigned long released; |
919 | ||
920 | if (!pending) | |
921 | { | |
922 | /* | |
923 | * Block incoming threads until all waiting threads are released. | |
924 | */ | |
15648790 | 925 | mtx_in.lock (); |
f592b05d TP |
926 | |
927 | /* | |
928 | * Calculate releaseable again because threads can enter until | |
929 | * the semaphore has been taken, but they can not leave, therefore pending | |
930 | * is unchanged and releaseable can only get higher | |
931 | */ | |
932 | releaseable = waiting - pending; | |
933 | } | |
934 | ||
935 | released = all ? releaseable : 1; | |
936 | pending += released; | |
937 | /* | |
938 | * Signal threads | |
939 | */ | |
15648790 | 940 | ::ReleaseSemaphore (sem_wait, released, NULL); |
86336f4f | 941 | } |
f592b05d TP |
942 | |
943 | /* | |
944 | * And let the threads release. | |
945 | */ | |
15648790 | 946 | mtx_out.unlock (); |
9a08b2c0 CF |
947 | } |
948 | ||
949 | int | |
15648790 | 950 | pthread_cond::wait (pthread_mutex_t mutex, DWORD dwMilliseconds) |
1fd5e000 | 951 | { |
9450ad0d | 952 | DWORD rv; |
5d68d1de | 953 | |
15648790 | 954 | mtx_in.lock (); |
eff6c00e | 955 | if (InterlockedIncrement ((long *)&waiting) == 1) |
15648790 TP |
956 | mtx_cond = mutex; |
957 | else if (mtx_cond != mutex) | |
f592b05d TP |
958 | { |
959 | InterlockedDecrement ((long *)&waiting); | |
15648790 | 960 | mtx_in.unlock (); |
f592b05d TP |
961 | return EINVAL; |
962 | } | |
15648790 | 963 | mtx_in.unlock (); |
f592b05d TP |
964 | |
965 | /* | |
966 | * Release the mutex and wait on semaphore | |
5d68d1de | 967 | */ |
f592b05d | 968 | ++mutex->condwaits; |
15648790 | 969 | mutex->unlock (); |
ff6e295e | 970 | |
15648790 | 971 | rv = pthread::cancelable_wait (sem_wait, dwMilliseconds, false); |
f592b05d | 972 | |
15648790 | 973 | mtx_out.lock (); |
f592b05d TP |
974 | |
975 | if (rv != WAIT_OBJECT_0) | |
9a08b2c0 | 976 | { |
f592b05d TP |
977 | /* |
978 | * It might happen that a signal is sent while the thread got canceled | |
979 | * or timed out. Try to take one. | |
980 | * If the thread gets one than a signal|broadcast is in progress. | |
981 | */ | |
eff6c00e | 982 | if (WaitForSingleObject (sem_wait, 0) == WAIT_OBJECT_0) |
f592b05d TP |
983 | /* |
984 | * thread got cancelled ot timed out while a signalling is in progress. | |
985 | * Set wait result back to signaled | |
986 | */ | |
987 | rv = WAIT_OBJECT_0; | |
9a08b2c0 | 988 | } |
f592b05d TP |
989 | |
990 | InterlockedDecrement ((long *)&waiting); | |
991 | ||
eff6c00e | 992 | if (rv == WAIT_OBJECT_0 && --pending == 0) |
f592b05d TP |
993 | /* |
994 | * All signaled threads are released, | |
995 | * new threads can enter Wait | |
996 | */ | |
15648790 | 997 | mtx_in.unlock (); |
f592b05d | 998 | |
15648790 | 999 | mtx_out.unlock (); |
f592b05d | 1000 | |
15648790 | 1001 | mutex->lock (); |
f592b05d TP |
1002 | --mutex->condwaits; |
1003 | ||
1004 | if (rv == WAIT_CANCELED) | |
1005 | pthread::static_cancel_self (); | |
1006 | else if (rv == WAIT_TIMEOUT) | |
1007 | return ETIMEDOUT; | |
1008 | ||
1009 | return 0; | |
166b2571 | 1010 | } |
1fd5e000 | 1011 | |
f9229ef7 | 1012 | void |
15648790 | 1013 | pthread_cond::_fixup_after_fork () |
f9229ef7 | 1014 | { |
f592b05d | 1015 | waiting = pending = 0; |
15648790 | 1016 | mtx_cond = NULL; |
f592b05d TP |
1017 | |
1018 | /* Unlock eventually locked mutexes */ | |
15648790 TP |
1019 | mtx_in.unlock (); |
1020 | mtx_out.unlock (); | |
f592b05d | 1021 | |
15648790 TP |
1022 | sem_wait = ::CreateSemaphore (&sec_none_nih, 0, LONG_MAX, NULL); |
1023 | if (!sem_wait) | |
1024 | api_fatal ("pthread_cond::_fixup_after_fork () failed to recreate win32 semaphore"); | |
f9229ef7 RC |
1025 | } |
1026 | ||
00d296a3 | 1027 | bool |
15648790 | 1028 | pthread_rwlockattr::is_good_object (pthread_rwlockattr_t const *attr) |
00d296a3 TP |
1029 | { |
1030 | if (verifyable_object_isvalid (attr, PTHREAD_RWLOCKATTR_MAGIC) != VALID_OBJECT) | |
1031 | return false; | |
1032 | return true; | |
1033 | } | |
1034 | ||
1035 | pthread_rwlockattr::pthread_rwlockattr ():verifyable_object | |
1036 | (PTHREAD_RWLOCKATTR_MAGIC), shared (PTHREAD_PROCESS_PRIVATE) | |
1037 | { | |
1038 | } | |
1039 | ||
1040 | pthread_rwlockattr::~pthread_rwlockattr () | |
1041 | { | |
1042 | } | |
1043 | ||
9306ba2e TP |
1044 | List<pthread_rwlock> pthread_rwlock::rwlocks; |
1045 | ||
00d296a3 | 1046 | /* This is used for rwlock creation protection within a single process only */ |
15648790 | 1047 | native_mutex NO_COPY pthread_rwlock::rwlock_initialization_lock; |
00d296a3 TP |
1048 | |
1049 | /* We can only be called once. | |
1050 | TODO: (no rush) use a non copied memory section to | |
1051 | hold an initialization flag. */ | |
1052 | void | |
15648790 | 1053 | pthread_rwlock::init_mutex () |
00d296a3 | 1054 | { |
15648790 | 1055 | if (!rwlock_initialization_lock.init ()) |
00d296a3 TP |
1056 | api_fatal ("Could not create win32 Mutex for pthread rwlock static initializer support."); |
1057 | } | |
1058 | ||
1059 | pthread_rwlock::pthread_rwlock (pthread_rwlockattr *attr) : | |
1060 | verifyable_object (PTHREAD_RWLOCK_MAGIC), | |
15648790 TP |
1061 | shared (0), waiting_readers (0), waiting_writers (0), writer (NULL), |
1062 | readers (NULL), mtx (NULL), cond_readers (NULL), cond_writers (NULL), | |
00d296a3 TP |
1063 | next (NULL) |
1064 | { | |
1065 | pthread_mutex *verifyable_mutex_obj = &mtx; | |
1066 | pthread_cond *verifyable_cond_obj; | |
1067 | ||
1068 | if (attr) | |
1069 | if (attr->shared != PTHREAD_PROCESS_PRIVATE) | |
1070 | { | |
1071 | magic = 0; | |
1072 | return; | |
1073 | } | |
1074 | ||
15648790 | 1075 | if (!pthread_mutex::is_good_object (&verifyable_mutex_obj)) |
00d296a3 TP |
1076 | { |
1077 | thread_printf ("Internal rwlock mutex is not valid. this %p", this); | |
1078 | magic = 0; | |
1079 | return; | |
1080 | } | |
1081 | /* Change the mutex type to NORMAL to speed up mutex operations */ | |
1082 | mtx.type = PTHREAD_MUTEX_NORMAL; | |
1083 | ||
15648790 TP |
1084 | verifyable_cond_obj = &cond_readers; |
1085 | if (!pthread_cond::is_good_object (&verifyable_cond_obj)) | |
00d296a3 TP |
1086 | { |
1087 | thread_printf ("Internal rwlock readers cond is not valid. this %p", this); | |
1088 | magic = 0; | |
1089 | return; | |
1090 | } | |
1091 | ||
15648790 TP |
1092 | verifyable_cond_obj = &cond_writers; |
1093 | if (!pthread_cond::is_good_object (&verifyable_cond_obj)) | |
00d296a3 TP |
1094 | { |
1095 | thread_printf ("Internal rwlock writers cond is not valid. this %p", this); | |
1096 | magic = 0; | |
1097 | return; | |
1098 | } | |
1099 | ||
1100 | ||
15648790 | 1101 | rwlocks.insert (this); |
00d296a3 TP |
1102 | } |
1103 | ||
1104 | pthread_rwlock::~pthread_rwlock () | |
1105 | { | |
15648790 | 1106 | rwlocks.remove (this); |
00d296a3 TP |
1107 | } |
1108 | ||
1109 | int | |
15648790 | 1110 | pthread_rwlock::rdlock () |
00d296a3 TP |
1111 | { |
1112 | int result = 0; | |
1113 | struct RWLOCK_READER *reader; | |
1114 | pthread_t self = pthread::self (); | |
1115 | ||
15648790 | 1116 | mtx.lock (); |
00d296a3 | 1117 | |
15648790 | 1118 | if (lookup_reader (self)) |
00d296a3 TP |
1119 | { |
1120 | result = EDEADLK; | |
1121 | goto DONE; | |
1122 | } | |
1123 | ||
1124 | reader = new struct RWLOCK_READER; | |
1125 | if (!reader) | |
1126 | { | |
1127 | result = EAGAIN; | |
1128 | goto DONE; | |
1129 | } | |
1130 | ||
15648790 | 1131 | while (writer || waiting_writers) |
00d296a3 | 1132 | { |
15648790 | 1133 | pthread_cleanup_push (pthread_rwlock::rdlock_cleanup, this); |
00d296a3 | 1134 | |
15648790 TP |
1135 | ++waiting_readers; |
1136 | cond_readers.wait (&mtx); | |
1137 | --waiting_readers; | |
00d296a3 TP |
1138 | |
1139 | pthread_cleanup_pop (0); | |
1140 | } | |
1141 | ||
1142 | reader->thread = self; | |
15648790 | 1143 | add_reader (reader); |
00d296a3 TP |
1144 | |
1145 | DONE: | |
15648790 | 1146 | mtx.unlock (); |
00d296a3 TP |
1147 | |
1148 | return result; | |
1149 | } | |
1150 | ||
1151 | int | |
15648790 | 1152 | pthread_rwlock::tryrdlock () |
00d296a3 TP |
1153 | { |
1154 | int result = 0; | |
1155 | pthread_t self = pthread::self (); | |
1156 | ||
15648790 | 1157 | mtx.lock (); |
00d296a3 | 1158 | |
15648790 | 1159 | if (writer || waiting_writers || lookup_reader (self)) |
00d296a3 TP |
1160 | result = EBUSY; |
1161 | else | |
1162 | { | |
1163 | struct RWLOCK_READER *reader = new struct RWLOCK_READER; | |
1164 | if (reader) | |
1165 | { | |
1166 | reader->thread = self; | |
15648790 | 1167 | add_reader (reader); |
00d296a3 TP |
1168 | } |
1169 | else | |
1170 | result = EAGAIN; | |
1171 | } | |
1172 | ||
15648790 | 1173 | mtx.unlock (); |
00d296a3 TP |
1174 | |
1175 | return result; | |
1176 | } | |
1177 | ||
1178 | int | |
15648790 | 1179 | pthread_rwlock::wrlock () |
00d296a3 TP |
1180 | { |
1181 | int result = 0; | |
1182 | pthread_t self = pthread::self (); | |
1183 | ||
15648790 | 1184 | mtx.lock (); |
00d296a3 | 1185 | |
15648790 | 1186 | if (writer == self || lookup_reader (self)) |
00d296a3 TP |
1187 | { |
1188 | result = EDEADLK; | |
1189 | goto DONE; | |
1190 | } | |
1191 | ||
1192 | while (writer || readers) | |
1193 | { | |
15648790 | 1194 | pthread_cleanup_push (pthread_rwlock::wrlock_cleanup, this); |
00d296a3 | 1195 | |
15648790 TP |
1196 | ++waiting_writers; |
1197 | cond_writers.wait (&mtx); | |
1198 | --waiting_writers; | |
00d296a3 TP |
1199 | |
1200 | pthread_cleanup_pop (0); | |
1201 | } | |
1202 | ||
1203 | writer = self; | |
1204 | ||
1205 | DONE: | |
15648790 | 1206 | mtx.unlock (); |
00d296a3 TP |
1207 | |
1208 | return result; | |
1209 | } | |
1210 | ||
1211 | int | |
15648790 | 1212 | pthread_rwlock::trywrlock () |
00d296a3 TP |
1213 | { |
1214 | int result = 0; | |
1215 | pthread_t self = pthread::self (); | |
1216 | ||
15648790 | 1217 | mtx.lock (); |
00d296a3 TP |
1218 | |
1219 | if (writer || readers) | |
1220 | result = EBUSY; | |
1221 | else | |
1222 | writer = self; | |
1223 | ||
15648790 | 1224 | mtx.unlock (); |
00d296a3 TP |
1225 | |
1226 | return result; | |
1227 | } | |
1228 | ||
1229 | int | |
15648790 | 1230 | pthread_rwlock::unlock () |
00d296a3 TP |
1231 | { |
1232 | int result = 0; | |
1233 | pthread_t self = pthread::self (); | |
1234 | ||
15648790 | 1235 | mtx.lock (); |
00d296a3 TP |
1236 | |
1237 | if (writer) | |
1238 | { | |
1239 | if (writer != self) | |
1240 | { | |
1241 | result = EPERM; | |
1242 | goto DONE; | |
1243 | } | |
1244 | ||
1245 | writer = NULL; | |
1246 | } | |
1247 | else | |
1248 | { | |
15648790 | 1249 | struct RWLOCK_READER *reader = lookup_reader (self); |
00d296a3 TP |
1250 | |
1251 | if (!reader) | |
1252 | { | |
1253 | result = EPERM; | |
1254 | goto DONE; | |
1255 | } | |
1256 | ||
15648790 | 1257 | remove_reader (reader); |
00d296a3 TP |
1258 | delete reader; |
1259 | } | |
1260 | ||
ffb576fb | 1261 | release (); |
00d296a3 TP |
1262 | |
1263 | DONE: | |
15648790 | 1264 | mtx.unlock (); |
00d296a3 TP |
1265 | |
1266 | return result; | |
1267 | } | |
1268 | ||
1269 | void | |
15648790 | 1270 | pthread_rwlock::add_reader (struct RWLOCK_READER *rd) |
00d296a3 TP |
1271 | { |
1272 | rd->next = (struct RWLOCK_READER *) | |
1273 | InterlockedExchangePointer (&readers, rd); | |
1274 | } | |
1275 | ||
1276 | void | |
15648790 | 1277 | pthread_rwlock::remove_reader (struct RWLOCK_READER *rd) |
00d296a3 TP |
1278 | { |
1279 | if (readers == rd) | |
1280 | InterlockedExchangePointer (&readers, rd->next); | |
1281 | else | |
1282 | { | |
1283 | struct RWLOCK_READER *temp = readers; | |
1284 | while (temp->next && temp->next != rd) | |
1285 | temp = temp->next; | |
1286 | /* but there may be a race between the loop above and this statement */ | |
1287 | InterlockedExchangePointer (&temp->next, rd->next); | |
1288 | } | |
1289 | } | |
1290 | ||
1291 | struct pthread_rwlock::RWLOCK_READER * | |
15648790 | 1292 | pthread_rwlock::lookup_reader (pthread_t thread) |
00d296a3 TP |
1293 | { |
1294 | struct RWLOCK_READER *temp = readers; | |
1295 | ||
1296 | while (temp && temp->thread != thread) | |
1297 | temp = temp->next; | |
1298 | ||
1299 | return temp; | |
1300 | } | |
1301 | ||
1302 | void | |
15648790 | 1303 | pthread_rwlock::rdlock_cleanup (void *arg) |
00d296a3 TP |
1304 | { |
1305 | pthread_rwlock *rwlock = (pthread_rwlock *) arg; | |
1306 | ||
15648790 | 1307 | --(rwlock->waiting_readers); |
ffb576fb | 1308 | rwlock->release (); |
15648790 | 1309 | rwlock->mtx.unlock (); |
00d296a3 TP |
1310 | } |
1311 | ||
1312 | void | |
15648790 | 1313 | pthread_rwlock::wrlock_cleanup (void *arg) |
00d296a3 TP |
1314 | { |
1315 | pthread_rwlock *rwlock = (pthread_rwlock *) arg; | |
1316 | ||
15648790 | 1317 | --(rwlock->waiting_writers); |
ffb576fb | 1318 | rwlock->release (); |
15648790 | 1319 | rwlock->mtx.unlock (); |
00d296a3 TP |
1320 | } |
1321 | ||
1322 | void | |
15648790 | 1323 | pthread_rwlock::_fixup_after_fork () |
00d296a3 TP |
1324 | { |
1325 | pthread_t self = pthread::self (); | |
1326 | struct RWLOCK_READER **temp = &readers; | |
1327 | ||
15648790 TP |
1328 | waiting_readers = 0; |
1329 | waiting_writers = 0; | |
00d296a3 TP |
1330 | |
1331 | /* Unlock eventually locked mutex */ | |
15648790 | 1332 | mtx.unlock (); |
00d296a3 TP |
1333 | /* |
1334 | * Remove all readers except self | |
1335 | */ | |
1336 | while (*temp) | |
1337 | { | |
1338 | if ((*temp)->thread == self) | |
1339 | temp = &((*temp)->next); | |
1340 | else | |
1341 | { | |
1342 | struct RWLOCK_READER *cur = *temp; | |
1343 | *temp = (*temp)->next; | |
1344 | delete cur; | |
1345 | } | |
1346 | } | |
1347 | } | |
1348 | ||
f1f13795 RC |
1349 | /* pthread_key */ |
1350 | /* static members */ | |
404f35cb RC |
1351 | /* This stores pthread_key information across fork() boundaries */ |
1352 | List<pthread_key> pthread_key::keys; | |
af428c1e | 1353 | |
4e2822f1 | 1354 | bool |
15648790 | 1355 | pthread_key::is_good_object (pthread_key_t const *key) |
4e2822f1 RC |
1356 | { |
1357 | if (verifyable_object_isvalid (key, PTHREAD_KEY_MAGIC) != VALID_OBJECT) | |
1358 | return false; | |
1359 | return true; | |
1360 | } | |
1361 | ||
f1f13795 | 1362 | /* non-static members */ |
f9229ef7 | 1363 | |
20b94ee9 | 1364 | pthread_key::pthread_key (void (*aDestructor) (void *)):verifyable_object (PTHREAD_KEY_MAGIC), destructor (aDestructor) |
1fd5e000 | 1365 | { |
15648790 TP |
1366 | tls_index = TlsAlloc (); |
1367 | if (tls_index == TLS_OUT_OF_INDEXES) | |
9a08b2c0 | 1368 | magic = 0; |
af428c1e | 1369 | else |
15648790 | 1370 | keys.insert (this); |
1fd5e000 CF |
1371 | } |
1372 | ||
9a08b2c0 CF |
1373 | pthread_key::~pthread_key () |
1374 | { | |
af428c1e RC |
1375 | /* We may need to make the list code lock the list during operations |
1376 | */ | |
6299349b | 1377 | if (magic != 0) |
f1f13795 | 1378 | { |
15648790 TP |
1379 | keys.remove (this); |
1380 | TlsFree (tls_index); | |
f1f13795 | 1381 | } |
3c76c076 | 1382 | } |
9a08b2c0 CF |
1383 | |
1384 | int | |
1385 | pthread_key::set (const void *value) | |
1fd5e000 | 1386 | { |
79ed4300 | 1387 | /* the OS function doesn't perform error checking */ |
15648790 | 1388 | TlsSetValue (tls_index, (void *) value); |
9a08b2c0 | 1389 | return 0; |
1fd5e000 CF |
1390 | } |
1391 | ||
9a08b2c0 | 1392 | void * |
20b94ee9 | 1393 | pthread_key::get () const |
5ccbf4b6 | 1394 | { |
15648790 TP |
1395 | int saved_error = ::GetLastError (); |
1396 | void *result = TlsGetValue (tls_index); | |
1397 | ::SetLastError (saved_error); | |
9f06b64a | 1398 | return result; |
5ccbf4b6 | 1399 | } |
1fd5e000 | 1400 | |
f1f13795 | 1401 | void |
15648790 | 1402 | pthread_key::save_key_to_buffer () |
f1f13795 RC |
1403 | { |
1404 | fork_buf = get (); | |
1405 | } | |
1406 | ||
1407 | void | |
15648790 | 1408 | pthread_key::recreate_key_from_buffer () |
f1f13795 | 1409 | { |
15648790 TP |
1410 | tls_index = TlsAlloc (); |
1411 | if (tls_index == TLS_OUT_OF_INDEXES) | |
1412 | api_fatal ("pthread_key::recreate_key_from_buffer () failed to reallocate Tls storage"); | |
f1f13795 RC |
1413 | set (fork_buf); |
1414 | } | |
1415 | ||
20b94ee9 | 1416 | void |
15648790 | 1417 | pthread_key::run_destructor () |
20b94ee9 | 1418 | { |
79ed4300 | 1419 | if (destructor) |
da6a08de | 1420 | { |
79ed4300 | 1421 | void *oldValue = get (); |
da6a08de RC |
1422 | if (oldValue) |
1423 | { | |
9a47ce7f CF |
1424 | set (NULL); |
1425 | destructor (oldValue); | |
da6a08de RC |
1426 | } |
1427 | } | |
20b94ee9 RC |
1428 | } |
1429 | ||
79ed4300 CF |
1430 | /* pshared mutexs: |
1431 | ||
1432 | REMOVED FROM CURRENT. These can be reinstated with the daemon, when all the | |
1433 | gymnastics can be a lot easier. | |
1434 | ||
1435 | the mutex_t (size 4) is not used as a verifyable object because we cannot | |
1436 | guarantee the same address space for all processes. | |
1437 | we use the following: | |
1438 | high bit set (never a valid address). | |
1439 | second byte is reserved for the priority. | |
1440 | third byte is reserved | |
1441 | fourth byte is the mutex id. (max 255 cygwin mutexs system wide). | |
1442 | creating mutex's does get slower and slower, but as creation is a one time | |
1443 | job, it should never become an issue | |
1444 | ||
1445 | And if you're looking at this and thinking, why not an array in cygwin for all mutexs, | |
1446 | - you incur a penalty on _every_ mutex call and you have toserialise them all. | |
1447 | ... Bad karma. | |
1448 | ||
1449 | option 2? put everything in userspace and update the ABI? | |
1450 | - bad karma as well - the HANDLE, while identical across process's, | |
1451 | Isn't duplicated, it's reopened. */ | |
9450ad0d | 1452 | |
4e2822f1 RC |
1453 | /* static members */ |
1454 | bool | |
15648790 | 1455 | pthread_mutex::is_good_object (pthread_mutex_t const *mutex) |
4e2822f1 | 1456 | { |
8b1978c3 | 1457 | if (verifyable_object_isvalid (mutex, PTHREAD_MUTEX_MAGIC) != VALID_OBJECT) |
4e2822f1 RC |
1458 | return false; |
1459 | return true; | |
1460 | } | |
1461 | ||
1462 | bool | |
15648790 | 1463 | pthread_mutex::is_good_initializer (pthread_mutex_t const *mutex) |
4e2822f1 | 1464 | { |
8b1978c3 RC |
1465 | if (verifyable_object_isvalid (mutex, PTHREAD_MUTEX_MAGIC, PTHREAD_MUTEX_INITIALIZER) != VALID_STATIC_OBJECT) |
1466 | return false; | |
1467 | return true; | |
1468 | } | |
1469 | ||
1470 | bool | |
15648790 | 1471 | pthread_mutex::is_good_initializer_or_object (pthread_mutex_t const *mutex) |
8b1978c3 RC |
1472 | { |
1473 | if (verifyable_object_isvalid (mutex, PTHREAD_MUTEX_MAGIC, PTHREAD_MUTEX_INITIALIZER) == INVALID_OBJECT) | |
4e2822f1 RC |
1474 | return false; |
1475 | return true; | |
1476 | } | |
1477 | ||
5d8c2b59 | 1478 | bool |
15648790 | 1479 | pthread_mutex::is_good_initializer_or_bad_object (pthread_mutex_t const *mutex) |
e9350b65 | 1480 | { |
ed9fe455 TP |
1481 | verifyable_object_state objectState = verifyable_object_isvalid (mutex, PTHREAD_MUTEX_MAGIC, PTHREAD_MUTEX_INITIALIZER); |
1482 | if (objectState == VALID_OBJECT) | |
e9350b65 | 1483 | return false; |
ed9fe455 | 1484 | return true; |
e9350b65 RC |
1485 | } |
1486 | ||
2ff03dc2 | 1487 | bool |
15648790 | 1488 | pthread_mutex::can_be_unlocked (pthread_mutex_t const *mutex) |
2ff03dc2 TP |
1489 | { |
1490 | pthread_t self = pthread::self (); | |
1491 | ||
15648790 | 1492 | if (!is_good_object (mutex)) |
2ff03dc2 TP |
1493 | return false; |
1494 | /* | |
1495 | * Check if the mutex is owned by the current thread and can be unlocked | |
1496 | */ | |
a4cea440 | 1497 | return ((*mutex)->recursion_counter == 1 && pthread::equal ((*mutex)->owner, self)); |
2ff03dc2 TP |
1498 | } |
1499 | ||
9306ba2e TP |
1500 | List<pthread_mutex> pthread_mutex::mutexes; |
1501 | ||
404f35cb | 1502 | /* This is used for mutex creation protection within a single process only */ |
15648790 | 1503 | native_mutex NO_COPY pthread_mutex::mutex_initialization_lock; |
eb208df0 RC |
1504 | |
1505 | /* We can only be called once. | |
79ed4300 CF |
1506 | TODO: (no rush) use a non copied memory section to |
1507 | hold an initialization flag. */ | |
eb208df0 | 1508 | void |
15648790 | 1509 | pthread_mutex::init_mutex () |
eb208df0 | 1510 | { |
15648790 | 1511 | if (!mutex_initialization_lock.init ()) |
66dca8bb | 1512 | api_fatal ("Could not create win32 Mutex for pthread mutex static initializer support."); |
eb208df0 RC |
1513 | } |
1514 | ||
5d68d1de TP |
1515 | pthread_mutex::pthread_mutex (pthread_mutexattr *attr) : |
1516 | verifyable_object (PTHREAD_MUTEX_MAGIC), | |
2ff03dc2 | 1517 | lock_counter (0), |
5d68d1de TP |
1518 | win32_obj_id (NULL), recursion_counter (0), |
1519 | condwaits (0), owner (NULL), type (PTHREAD_MUTEX_DEFAULT), | |
9a47ce7f | 1520 | pshared (PTHREAD_PROCESS_PRIVATE) |
1fd5e000 | 1521 | { |
5d68d1de TP |
1522 | win32_obj_id = ::CreateSemaphore (&sec_none_nih, 0, LONG_MAX, NULL); |
1523 | if (!win32_obj_id) | |
9450ad0d | 1524 | { |
9450ad0d RC |
1525 | magic = 0; |
1526 | return; | |
1527 | } | |
5d68d1de TP |
1528 | /*attr checked in the C call */ |
1529 | if (attr) | |
8e4d9692 | 1530 | { |
5d68d1de | 1531 | if (attr->pshared == PTHREAD_PROCESS_SHARED) |
9a47ce7f CF |
1532 | { |
1533 | // fail | |
1534 | magic = 0; | |
1535 | return; | |
1536 | } | |
1537 | ||
5d68d1de | 1538 | type = attr->mutextype; |
8e4d9692 | 1539 | } |
5d68d1de | 1540 | |
15648790 | 1541 | mutexes.insert (this); |
5c83f260 | 1542 | } |
9a08b2c0 CF |
1543 | |
1544 | pthread_mutex::~pthread_mutex () | |
1545 | { | |
5d68d1de TP |
1546 | if (win32_obj_id) |
1547 | CloseHandle (win32_obj_id); | |
1548 | ||
15648790 | 1549 | mutexes.remove (this); |
166b2571 | 1550 | } |
1fd5e000 CF |
1551 | |
1552 | int | |
15648790 | 1553 | pthread_mutex::_lock (pthread_t self) |
1fd5e000 | 1554 | { |
5d68d1de | 1555 | int result = 0; |
9a47ce7f | 1556 | |
eff6c00e | 1557 | if (InterlockedIncrement ((long *)&lock_counter) == 1) |
15648790 | 1558 | set_owner (self); |
a4cea440 | 1559 | else if (type != PTHREAD_MUTEX_NORMAL && pthread::equal (owner, self)) |
8e4d9692 | 1560 | { |
2ff03dc2 | 1561 | InterlockedDecrement ((long *) &lock_counter); |
eff6c00e | 1562 | if (type == PTHREAD_MUTEX_RECURSIVE) |
15648790 | 1563 | result = lock_recursive (); |
5d68d1de | 1564 | else |
9a47ce7f | 1565 | result = EDEADLK; |
8e4d9692 | 1566 | } |
5d68d1de TP |
1567 | else |
1568 | { | |
1569 | WaitForSingleObject (win32_obj_id, INFINITE); | |
15648790 | 1570 | set_owner (self); |
5d68d1de | 1571 | } |
9a47ce7f | 1572 | |
5d68d1de | 1573 | return result; |
166b2571 | 1574 | } |
1fd5e000 CF |
1575 | |
1576 | int | |
15648790 | 1577 | pthread_mutex::_trylock (pthread_t self) |
1fd5e000 | 1578 | { |
5d68d1de | 1579 | int result = 0; |
9a47ce7f | 1580 | |
eff6c00e | 1581 | if (InterlockedCompareExchange ((long *)&lock_counter, 1, 0 ) == 0) |
15648790 | 1582 | set_owner (self); |
a4cea440 | 1583 | else if (type == PTHREAD_MUTEX_RECURSIVE && pthread::equal (owner, self)) |
15648790 | 1584 | result = lock_recursive (); |
5d68d1de TP |
1585 | else |
1586 | result = EBUSY; | |
9a47ce7f | 1587 | |
5d68d1de | 1588 | return result; |
166b2571 | 1589 | } |
1fd5e000 CF |
1590 | |
1591 | int | |
15648790 | 1592 | pthread_mutex::_unlock (pthread_t self) |
1fd5e000 | 1593 | { |
a4cea440 | 1594 | if (!pthread::equal (owner, self)) |
5d68d1de | 1595 | return EPERM; |
9a47ce7f | 1596 | |
eff6c00e | 1597 | if (--recursion_counter == 0) |
8e4d9692 | 1598 | { |
5d68d1de | 1599 | owner = NULL; |
2ff03dc2 | 1600 | if (InterlockedDecrement ((long *)&lock_counter)) |
9a47ce7f CF |
1601 | // Another thread is waiting |
1602 | ::ReleaseSemaphore (win32_obj_id, 1, NULL); | |
8e4d9692 | 1603 | } |
9a47ce7f | 1604 | |
5d68d1de TP |
1605 | return 0; |
1606 | } | |
1607 | ||
1608 | int | |
15648790 | 1609 | pthread_mutex::_destroy (pthread_t self) |
5d68d1de | 1610 | { |
15648790 | 1611 | if (condwaits || _trylock (self)) |
5d68d1de TP |
1612 | // Do not destroy a condwaited or locked mutex |
1613 | return EBUSY; | |
1614 | else if (recursion_counter != 1) | |
1615 | { | |
1616 | // Do not destroy a recursive locked mutex | |
1617 | --recursion_counter; | |
1618 | return EBUSY; | |
1619 | } | |
9a47ce7f | 1620 | |
5d68d1de TP |
1621 | delete this; |
1622 | return 0; | |
1623 | } | |
9a47ce7f | 1624 | |
f9229ef7 | 1625 | void |
15648790 | 1626 | pthread_mutex::_fixup_after_fork () |
f9229ef7 | 1627 | { |
15648790 | 1628 | debug_printf ("mutex %x in _fixup_after_fork", this); |
f9229ef7 | 1629 | if (pshared != PTHREAD_PROCESS_PRIVATE) |
15648790 | 1630 | api_fatal ("pthread_mutex::_fixup_after_fork () doesn'tunderstand PROCESS_SHARED mutex's"); |
5d68d1de | 1631 | |
eff6c00e | 1632 | if (owner == NULL) |
5d68d1de | 1633 | /* mutex has no owner, reset to initial */ |
5d68d1de | 1634 | lock_counter = 0; |
2ff03dc2 TP |
1635 | else if (lock_counter != 0) |
1636 | /* All waiting threads are gone after a fork */ | |
1637 | lock_counter = 1; | |
5d68d1de TP |
1638 | |
1639 | win32_obj_id = ::CreateSemaphore (&sec_none_nih, 0, LONG_MAX, NULL); | |
1640 | if (!win32_obj_id) | |
15648790 | 1641 | api_fatal ("pthread_mutex::_fixup_after_fork () failed to recreate win32 semaphore for mutex"); |
5d68d1de | 1642 | |
8e4d9692 | 1643 | condwaits = 0; |
f9229ef7 RC |
1644 | } |
1645 | ||
8b1978c3 | 1646 | bool |
15648790 | 1647 | pthread_mutexattr::is_good_object (pthread_mutexattr_t const * attr) |
8b1978c3 RC |
1648 | { |
1649 | if (verifyable_object_isvalid (attr, PTHREAD_MUTEXATTR_MAGIC) != VALID_OBJECT) | |
1650 | return false; | |
1651 | return true; | |
1652 | } | |
1653 | ||
5c83f260 RC |
1654 | pthread_mutexattr::pthread_mutexattr ():verifyable_object (PTHREAD_MUTEXATTR_MAGIC), |
1655 | pshared (PTHREAD_PROCESS_PRIVATE), mutextype (PTHREAD_MUTEX_DEFAULT) | |
1656 | { | |
1657 | } | |
1658 | ||
1659 | pthread_mutexattr::~pthread_mutexattr () | |
1660 | { | |
3c76c076 | 1661 | } |
5c83f260 | 1662 | |
9306ba2e TP |
1663 | List<semaphore> semaphore::semaphores; |
1664 | ||
9a08b2c0 | 1665 | semaphore::semaphore (int pshared, unsigned int value):verifyable_object (SEM_MAGIC) |
1fd5e000 | 1666 | { |
4d029f39 | 1667 | this->win32_obj_id = ::CreateSemaphore (&sec_none_nih, value, LONG_MAX, |
bd2b5664 | 1668 | NULL); |
9a08b2c0 CF |
1669 | if (!this->win32_obj_id) |
1670 | magic = 0; | |
1671 | this->shared = pshared; | |
f9229ef7 | 1672 | currentvalue = value; |
9306ba2e | 1673 | |
15648790 | 1674 | semaphores.insert (this); |
166b2571 | 1675 | } |
1fd5e000 | 1676 | |
9a08b2c0 | 1677 | semaphore::~semaphore () |
1fd5e000 | 1678 | { |
9a08b2c0 CF |
1679 | if (win32_obj_id) |
1680 | CloseHandle (win32_obj_id); | |
9306ba2e | 1681 | |
15648790 | 1682 | semaphores.remove (this); |
166b2571 | 1683 | } |
1fd5e000 | 1684 | |
9a08b2c0 | 1685 | void |
15648790 | 1686 | semaphore::_post () |
1fd5e000 | 1687 | { |
f9229ef7 RC |
1688 | /* we can't use the currentvalue, because the wait functions don't let us access it */ |
1689 | ReleaseSemaphore (win32_obj_id, 1, NULL); | |
1690 | currentvalue++; | |
166b2571 | 1691 | } |
1fd5e000 CF |
1692 | |
1693 | int | |
15648790 | 1694 | semaphore::_trywait () |
1fd5e000 | 1695 | { |
79ed4300 | 1696 | /* FIXME: signals should be able to interrupt semaphores... |
f9f2c119 | 1697 | *We probably need WaitForMultipleObjects here. |
9a08b2c0 CF |
1698 | */ |
1699 | if (WaitForSingleObject (win32_obj_id, 0) == WAIT_TIMEOUT) | |
062401c9 RC |
1700 | { |
1701 | set_errno (EAGAIN); | |
1702 | return -1; | |
1703 | } | |
f9229ef7 RC |
1704 | currentvalue--; |
1705 | return 0; | |
166b2571 | 1706 | } |
1fd5e000 | 1707 | |
9a08b2c0 | 1708 | void |
15648790 | 1709 | semaphore::_wait () |
5ccbf4b6 | 1710 | { |
09cbb9d6 TP |
1711 | switch (pthread::cancelable_wait (win32_obj_id, INFINITE)) |
1712 | { | |
1713 | case WAIT_OBJECT_0: | |
1714 | currentvalue--; | |
1715 | break; | |
1716 | default: | |
1717 | debug_printf ("cancelable_wait failed. %E"); | |
1718 | return; | |
1719 | } | |
f9229ef7 RC |
1720 | } |
1721 | ||
1722 | void | |
15648790 | 1723 | semaphore::_fixup_after_fork () |
f9229ef7 | 1724 | { |
15648790 | 1725 | debug_printf ("sem %x in _fixup_after_fork", this); |
f9229ef7 | 1726 | if (shared != PTHREAD_PROCESS_PRIVATE) |
4d029f39 | 1727 | api_fatal ("doesn't understand PROCESS_SHARED semaphores variables"); |
f9229ef7 | 1728 | /* FIXME: duplicate code here and in the constructor. */ |
4d029f39 | 1729 | this->win32_obj_id = ::CreateSemaphore (&sec_none_nih, currentvalue, LONG_MAX, NULL); |
f9229ef7 | 1730 | if (!win32_obj_id) |
4d029f39 | 1731 | api_fatal ("failed to create new win32 semaphore"); |
5ccbf4b6 CF |
1732 | } |
1733 | ||
9a08b2c0 CF |
1734 | verifyable_object::verifyable_object (long verifyer): |
1735 | magic (verifyer) | |
5ccbf4b6 | 1736 | { |
5ccbf4b6 CF |
1737 | } |
1738 | ||
9a08b2c0 | 1739 | verifyable_object::~verifyable_object () |
5ccbf4b6 | 1740 | { |
9a08b2c0 | 1741 | magic = 0; |
5ccbf4b6 CF |
1742 | } |
1743 | ||
79ed4300 | 1744 | /* Generic memory acccess routine - where should it live ? */ |
9a08b2c0 | 1745 | int __stdcall |
86336f4f | 1746 | check_valid_pointer (void const *pointer) |
9a08b2c0 | 1747 | { |
86336f4f | 1748 | if (!pointer || IsBadWritePtr ((void *) pointer, sizeof (verifyable_object))) |
9a08b2c0 CF |
1749 | return EFAULT; |
1750 | return 0; | |
5ccbf4b6 CF |
1751 | } |
1752 | ||
86336f4f RC |
1753 | verifyable_object_state |
1754 | verifyable_object_isvalid (void const * objectptr, long magic, void *static_ptr) | |
5ccbf4b6 | 1755 | { |
c918cf94 | 1756 | verifyable_object **object = (verifyable_object **)objectptr; |
9a08b2c0 | 1757 | if (check_valid_pointer (object)) |
86336f4f | 1758 | return INVALID_OBJECT; |
5d8c2b59 CF |
1759 | if (static_ptr && *object == static_ptr) |
1760 | return VALID_STATIC_OBJECT; | |
86336f4f RC |
1761 | if (!*object) |
1762 | return INVALID_OBJECT; | |
c918cf94 | 1763 | if (check_valid_pointer (*object)) |
86336f4f | 1764 | return INVALID_OBJECT; |
c918cf94 | 1765 | if ((*object)->magic != magic) |
86336f4f RC |
1766 | return INVALID_OBJECT; |
1767 | return VALID_OBJECT; | |
1768 | } | |
1769 | ||
1770 | verifyable_object_state | |
1771 | verifyable_object_isvalid (void const * objectptr, long magic) | |
1772 | { | |
1773 | return verifyable_object_isvalid (objectptr, magic, NULL); | |
5ccbf4b6 | 1774 | } |
1fd5e000 | 1775 | |
f9f2c119 | 1776 | /* Pthreads */ |
1fd5e000 | 1777 | void * |
43c3c4e3 | 1778 | pthread::thread_init_wrapper (void *_arg) |
1fd5e000 | 1779 | { |
94b03f23 | 1780 | // Setup the local/global storage of this thread |
1fd5e000 | 1781 | |
9a08b2c0 | 1782 | pthread *thread = (pthread *) _arg; |
1fd5e000 CF |
1783 | struct __reent_t local_reent; |
1784 | struct _winsup_t local_winsup; | |
f1f13795 | 1785 | struct _reent local_clib = _REENT_INIT (local_clib); |
1fd5e000 CF |
1786 | |
1787 | struct sigaction _sigs[NSIG]; | |
79ed4300 | 1788 | sigset_t _sig_mask; /* one set for everything to ignore. */ |
1fd5e000 CF |
1789 | LONG _sigtodo[NSIG + __SIGOFFSET]; |
1790 | ||
94b03f23 | 1791 | // setup signal structures |
1fd5e000 CF |
1792 | thread->sigs = _sigs; |
1793 | thread->sigmask = &_sig_mask; | |
1794 | thread->sigtodo = _sigtodo; | |
1795 | ||
1fd5e000 CF |
1796 | memset (&local_winsup, 0, sizeof (struct _winsup_t)); |
1797 | ||
1fd5e000 CF |
1798 | local_reent._clib = &local_clib; |
1799 | local_reent._winsup = &local_winsup; | |
1800 | ||
1801 | local_winsup._process_logmask = LOG_UPTO (LOG_DEBUG); | |
1802 | ||
f8c8e13b | 1803 | MT_INTERFACE->reent_key.set (&local_reent); |
1fd5e000 | 1804 | |
15648790 TP |
1805 | thread->set_thread_id_to_current (); |
1806 | set_tls_self_pointer (thread); | |
9a08b2c0 | 1807 | |
15648790 | 1808 | thread->mutex.lock (); |
e9259cb2 | 1809 | // if thread is detached force cleanup on exit |
007276b3 | 1810 | if (thread->attr.joinable == PTHREAD_CREATE_DETACHED && thread->joiner == NULL) |
f8c8e13b | 1811 | thread->joiner = thread; |
15648790 | 1812 | thread->mutex.unlock (); |
e9259cb2 | 1813 | |
1fd5e000 CF |
1814 | #ifdef _CYG_THREAD_FAILSAFE |
1815 | if (_REENT == _impure_ptr) | |
1816 | system_printf ("local storage for thread isn't setup correctly"); | |
1817 | #endif | |
1818 | ||
9a08b2c0 CF |
1819 | thread_printf ("started thread %p %p %p %p %p %p", _arg, &local_clib, |
1820 | _impure_ptr, thread, thread->function, thread->arg); | |
1fd5e000 | 1821 | |
94b03f23 | 1822 | // call the user's thread |
1fd5e000 CF |
1823 | void *ret = thread->function (thread->arg); |
1824 | ||
d288c1c7 | 1825 | thread->exit (ret); |
1fd5e000 | 1826 | |
9a08b2c0 CF |
1827 | #if 0 |
1828 | // ??? This code only runs if the thread exits by returning. | |
3c76c076 | 1829 | // it's all now in __pthread_exit (); |
9a08b2c0 | 1830 | #endif |
79ed4300 | 1831 | /* never reached */ |
9a08b2c0 | 1832 | return 0; |
1fd5e000 CF |
1833 | } |
1834 | ||
4e786173 | 1835 | bool |
15648790 | 1836 | pthread::is_good_object (pthread_t const *thread) |
4e786173 RC |
1837 | { |
1838 | if (verifyable_object_isvalid (thread, PTHREAD_MAGIC) != VALID_OBJECT) | |
1839 | return false; | |
1840 | return true; | |
1841 | } | |
1842 | ||
1843 | unsigned long | |
1844 | pthread::getsequence_np () | |
1845 | { | |
15648790 | 1846 | return get_thread_id (); |
4e786173 RC |
1847 | } |
1848 | ||
1fd5e000 | 1849 | int |
01f58e41 | 1850 | pthread::create (pthread_t *thread, const pthread_attr_t *attr, |
9a08b2c0 | 1851 | void *(*start_routine) (void *), void *arg) |
1fd5e000 | 1852 | { |
4d029f39 | 1853 | DECLARE_TLS_STORAGE; |
15648790 | 1854 | if (attr && !pthread_attr::is_good_object (attr)) |
9a08b2c0 | 1855 | return EINVAL; |
1fd5e000 | 1856 | |
9a08b2c0 CF |
1857 | *thread = new pthread (); |
1858 | (*thread)->create (start_routine, attr ? *attr : NULL, arg); | |
15648790 | 1859 | if (!is_good_object (thread)) |
1fd5e000 | 1860 | { |
9a08b2c0 CF |
1861 | delete (*thread); |
1862 | *thread = NULL; | |
1863 | return EAGAIN; | |
91892f50 | 1864 | } |
1fd5e000 | 1865 | |
1fd5e000 | 1866 | return 0; |
166b2571 | 1867 | } |
1fd5e000 | 1868 | |
5c83f260 | 1869 | int |
01f58e41 | 1870 | pthread::once (pthread_once_t *once_control, void (*init_routine) (void)) |
5c83f260 | 1871 | { |
f6709c07 RC |
1872 | // already done ? |
1873 | if (once_control->state) | |
1874 | return 0; | |
1875 | ||
5c83f260 | 1876 | pthread_mutex_lock (&once_control->mutex); |
79ed4300 CF |
1877 | /* Here we must set a cancellation handler to unlock the mutex if needed */ |
1878 | /* but a cancellation handler is not the right thing. We need this in the thread | |
f9f2c119 CF |
1879 | *cleanup routine. Assumption: a thread can only be in one pthread_once routine |
1880 | *at a time. Stote a mutex_t *in the pthread_structure. if that's non null unlock | |
1881 | *on pthread_exit (); | |
5c83f260 | 1882 | */ |
f6709c07 | 1883 | if (!once_control->state) |
5c83f260 RC |
1884 | { |
1885 | init_routine (); | |
1886 | once_control->state = 1; | |
1887 | } | |
79ed4300 | 1888 | /* Here we must remove our cancellation handler */ |
5c83f260 RC |
1889 | pthread_mutex_unlock (&once_control->mutex); |
1890 | return 0; | |
1891 | } | |
1892 | ||
5c83f260 | 1893 | int |
01f58e41 | 1894 | pthread::cancel (pthread_t thread) |
5c83f260 | 1895 | { |
15648790 | 1896 | if (!is_good_object (&thread)) |
5c83f260 | 1897 | return ESRCH; |
5c83f260 | 1898 | |
d288c1c7 | 1899 | return thread->cancel (); |
5c83f260 RC |
1900 | } |
1901 | ||
79ed4300 CF |
1902 | /* Races in pthread_atfork: |
1903 | We are race safe in that any additions to the lists are made via | |
1904 | InterlockedExchangePointer. | |
1905 | However, if the user application doesn't perform syncronisation of some sort | |
1906 | It's not guaranteed that a near simultaneous call to pthread_atfork and fork | |
1907 | will result in the new atfork handlers being calls. | |
1908 | More rigorous internal syncronisation isn't needed as the user program isn't | |
1909 | guaranteeing their own state. | |
1910 | ||
1911 | as far as multiple calls to pthread_atfork, the worst case is simultaneous calls | |
1912 | will result in an indeterminate order for parent and child calls (what gets inserted | |
1913 | first isn't guaranteed.) | |
1914 | ||
1915 | There is one potential race... Does the result of InterlockedExchangePointer | |
1916 | get committed to the return location _before_ any context switches can occur? | |
1917 | If yes, we're safe, if no, we're not. */ | |
39b6859a | 1918 | void |
f1f13795 | 1919 | pthread::atforkprepare (void) |
39b6859a | 1920 | { |
f1f13795 RC |
1921 | MT_INTERFACE->fixup_before_fork (); |
1922 | ||
3c76c076 | 1923 | callback *cb = MT_INTERFACE->pthread_prepare; |
39b6859a CF |
1924 | while (cb) |
1925 | { | |
3c76c076 CF |
1926 | cb->cb (); |
1927 | cb = cb->next; | |
39b6859a CF |
1928 | } |
1929 | } | |
1930 | ||
3c76c076 | 1931 | void |
f1f13795 | 1932 | pthread::atforkparent (void) |
39b6859a | 1933 | { |
3c76c076 | 1934 | callback *cb = MT_INTERFACE->pthread_parent; |
39b6859a CF |
1935 | while (cb) |
1936 | { | |
3c76c076 CF |
1937 | cb->cb (); |
1938 | cb = cb->next; | |
39b6859a CF |
1939 | } |
1940 | } | |
1941 | ||
1942 | void | |
f1f13795 | 1943 | pthread::atforkchild (void) |
39b6859a | 1944 | { |
f1f13795 RC |
1945 | MT_INTERFACE->fixup_after_fork (); |
1946 | ||
3c76c076 | 1947 | callback *cb = MT_INTERFACE->pthread_child; |
39b6859a CF |
1948 | while (cb) |
1949 | { | |
3c76c076 CF |
1950 | cb->cb (); |
1951 | cb = cb->next; | |
39b6859a CF |
1952 | } |
1953 | } | |
1954 | ||
79ed4300 CF |
1955 | /* Register a set of functions to run before and after fork. |
1956 | prepare calls are called in LI-FC order. | |
1957 | parent and child calls are called in FI-FC order. */ | |
39b6859a | 1958 | int |
01f58e41 | 1959 | pthread::atfork (void (*prepare)(void), void (*parent)(void), void (*child)(void)) |
39b6859a | 1960 | { |
f9f2c119 | 1961 | callback *prepcb = NULL, *parentcb = NULL, *childcb = NULL; |
39b6859a CF |
1962 | if (prepare) |
1963 | { | |
1964 | prepcb = new callback; | |
1965 | if (!prepcb) | |
1966 | return ENOMEM; | |
1967 | } | |
1968 | if (parent) | |
1969 | { | |
1970 | parentcb = new callback; | |
1971 | if (!parentcb) | |
1972 | { | |
1973 | if (prepcb) | |
1974 | delete prepcb; | |
1975 | return ENOMEM; | |
1976 | } | |
1977 | } | |
1978 | if (child) | |
1979 | { | |
1980 | childcb = new callback; | |
1981 | if (!childcb) | |
1982 | { | |
1983 | if (prepcb) | |
1984 | delete prepcb; | |
1985 | if (parentcb) | |
1986 | delete parentcb; | |
1987 | return ENOMEM; | |
1988 | } | |
1989 | } | |
1990 | ||
1991 | if (prepcb) | |
1992 | { | |
1993 | prepcb->cb = prepare; | |
7b80d68f | 1994 | prepcb->next = (callback *) InterlockedExchangePointer ((LONG *) &MT_INTERFACE->pthread_prepare, (long int) prepcb); |
39b6859a CF |
1995 | } |
1996 | if (parentcb) | |
1997 | { | |
1998 | parentcb->cb = parent; | |
f9f2c119 | 1999 | callback **t = &MT_INTERFACE->pthread_parent; |
39b6859a CF |
2000 | while (*t) |
2001 | t = &(*t)->next; | |
79ed4300 | 2002 | /* t = pointer to last next in the list */ |
7b80d68f | 2003 | parentcb->next = (callback *) InterlockedExchangePointer ((LONG *) t, (long int) parentcb); |
39b6859a CF |
2004 | } |
2005 | if (childcb) | |
2006 | { | |
2007 | childcb->cb = child; | |
f9f2c119 | 2008 | callback **t = &MT_INTERFACE->pthread_child; |
39b6859a CF |
2009 | while (*t) |
2010 | t = &(*t)->next; | |
79ed4300 | 2011 | /* t = pointer to last next in the list */ |
7b80d68f | 2012 | childcb->next = (callback *) InterlockedExchangePointer ((LONG *) t, (long int) childcb); |
39b6859a CF |
2013 | } |
2014 | return 0; | |
2015 | } | |
2016 | ||
6a80a133 TP |
2017 | extern "C" int |
2018 | pthread_attr_init (pthread_attr_t *attr) | |
1fd5e000 | 2019 | { |
00e6660b | 2020 | if (pthread_attr::is_good_object (attr)) |
1c80421c | 2021 | return EBUSY; |
00e6660b | 2022 | |
9a08b2c0 | 2023 | *attr = new pthread_attr; |
15648790 | 2024 | if (!pthread_attr::is_good_object (attr)) |
9a08b2c0 CF |
2025 | { |
2026 | delete (*attr); | |
2027 | *attr = NULL; | |
00e6660b | 2028 | return ENOMEM; |
9a08b2c0 CF |
2029 | } |
2030 | return 0; | |
2031 | } | |
2032 | ||
6a80a133 TP |
2033 | extern "C" int |
2034 | pthread_attr_getinheritsched (const pthread_attr_t *attr, | |
5c83f260 RC |
2035 | int *inheritsched) |
2036 | { | |
15648790 | 2037 | if (!pthread_attr::is_good_object (attr)) |
5c83f260 RC |
2038 | return EINVAL; |
2039 | *inheritsched = (*attr)->inheritsched; | |
2040 | return 0; | |
2041 | } | |
2042 | ||
6a80a133 TP |
2043 | extern "C" int |
2044 | pthread_attr_getschedparam (const pthread_attr_t *attr, | |
5c83f260 RC |
2045 | struct sched_param *param) |
2046 | { | |
15648790 | 2047 | if (!pthread_attr::is_good_object (attr)) |
5c83f260 RC |
2048 | return EINVAL; |
2049 | *param = (*attr)->schedparam; | |
2050 | return 0; | |
2051 | } | |
2052 | ||
79ed4300 CF |
2053 | /* From a pure code point of view, this should call a helper in sched.cc, |
2054 | to allow for someone adding scheduler policy changes to win32 in the future. | |
2055 | However that's extremely unlikely, so short and sweet will do us */ | |
6a80a133 TP |
2056 | extern "C" int |
2057 | pthread_attr_getschedpolicy (const pthread_attr_t *attr, int *policy) | |
5c83f260 | 2058 | { |
15648790 | 2059 | if (!pthread_attr::is_good_object (attr)) |
5c83f260 RC |
2060 | return EINVAL; |
2061 | *policy = SCHED_FIFO; | |
2062 | return 0; | |
2063 | } | |
2064 | ||
2065 | ||
6a80a133 TP |
2066 | extern "C" int |
2067 | pthread_attr_getscope (const pthread_attr_t *attr, int *contentionscope) | |
5c83f260 | 2068 | { |
15648790 | 2069 | if (!pthread_attr::is_good_object (attr)) |
5c83f260 RC |
2070 | return EINVAL; |
2071 | *contentionscope = (*attr)->contentionscope; | |
2072 | return 0; | |
2073 | } | |
2074 | ||
6a80a133 TP |
2075 | extern "C" int |
2076 | pthread_attr_setdetachstate (pthread_attr_t *attr, int detachstate) | |
9a08b2c0 | 2077 | { |
15648790 | 2078 | if (!pthread_attr::is_good_object (attr)) |
9a08b2c0 CF |
2079 | return EINVAL; |
2080 | if (detachstate < 0 || detachstate > 1) | |
2081 | return EINVAL; | |
2082 | (*attr)->joinable = detachstate; | |
2083 | return 0; | |
2084 | } | |
2085 | ||
6a80a133 TP |
2086 | extern "C" int |
2087 | pthread_attr_getdetachstate (const pthread_attr_t *attr, int *detachstate) | |
9a08b2c0 | 2088 | { |
15648790 | 2089 | if (!pthread_attr::is_good_object (attr)) |
9a08b2c0 CF |
2090 | return EINVAL; |
2091 | *detachstate = (*attr)->joinable; | |
1fd5e000 | 2092 | return 0; |
166b2571 | 2093 | } |
1fd5e000 | 2094 | |
6a80a133 TP |
2095 | extern "C" int |
2096 | pthread_attr_setinheritsched (pthread_attr_t *attr, int inheritsched) | |
5c83f260 | 2097 | { |
15648790 | 2098 | if (!pthread_attr::is_good_object (attr)) |
5c83f260 RC |
2099 | return EINVAL; |
2100 | if (inheritsched != PTHREAD_INHERIT_SCHED | |
2101 | && inheritsched != PTHREAD_EXPLICIT_SCHED) | |
2102 | return ENOTSUP; | |
2103 | (*attr)->inheritsched = inheritsched; | |
2104 | return 0; | |
2105 | } | |
2106 | ||
6a80a133 TP |
2107 | extern "C" int |
2108 | pthread_attr_setschedparam (pthread_attr_t *attr, | |
5c83f260 RC |
2109 | const struct sched_param *param) |
2110 | { | |
15648790 | 2111 | if (!pthread_attr::is_good_object (attr)) |
5c83f260 RC |
2112 | return EINVAL; |
2113 | if (!valid_sched_parameters (param)) | |
2114 | return ENOTSUP; | |
2115 | (*attr)->schedparam = *param; | |
2116 | return 0; | |
2117 | } | |
2118 | ||
79ed4300 | 2119 | /* See __pthread_attr_getschedpolicy for some notes */ |
6a80a133 TP |
2120 | extern "C" int |
2121 | pthread_attr_setschedpolicy (pthread_attr_t *attr, int policy) | |
5c83f260 | 2122 | { |
15648790 | 2123 | if (!pthread_attr::is_good_object (attr)) |
5c83f260 RC |
2124 | return EINVAL; |
2125 | if (policy != SCHED_FIFO) | |
2126 | return ENOTSUP; | |
2127 | return 0; | |
2128 | } | |
2129 | ||
6a80a133 TP |
2130 | extern "C" int |
2131 | pthread_attr_setscope (pthread_attr_t *attr, int contentionscope) | |
5c83f260 | 2132 | { |
15648790 | 2133 | if (!pthread_attr::is_good_object (attr)) |
5c83f260 RC |
2134 | return EINVAL; |
2135 | if (contentionscope != PTHREAD_SCOPE_SYSTEM | |
2136 | && contentionscope != PTHREAD_SCOPE_PROCESS) | |
2137 | return EINVAL; | |
79ed4300 CF |
2138 | /* In future, we may be able to support system scope by escalating the thread |
2139 | priority to exceed the priority class. For now we only support PROCESS scope. */ | |
5c83f260 RC |
2140 | if (contentionscope != PTHREAD_SCOPE_PROCESS) |
2141 | return ENOTSUP; | |
2142 | (*attr)->contentionscope = contentionscope; | |
2143 | return 0; | |
2144 | } | |
2145 | ||
6a80a133 TP |
2146 | extern "C" int |
2147 | pthread_attr_setstacksize (pthread_attr_t *attr, size_t size) | |
1fd5e000 | 2148 | { |
15648790 | 2149 | if (!pthread_attr::is_good_object (attr)) |
9a08b2c0 CF |
2150 | return EINVAL; |
2151 | (*attr)->stacksize = size; | |
1fd5e000 | 2152 | return 0; |
166b2571 | 2153 | } |
1fd5e000 | 2154 | |
6a80a133 TP |
2155 | extern "C" int |
2156 | pthread_attr_getstacksize (const pthread_attr_t *attr, size_t *size) | |
1fd5e000 | 2157 | { |
15648790 | 2158 | if (!pthread_attr::is_good_object (attr)) |
9a08b2c0 CF |
2159 | return EINVAL; |
2160 | *size = (*attr)->stacksize; | |
1fd5e000 | 2161 | return 0; |
166b2571 | 2162 | } |
1fd5e000 | 2163 | |
6a80a133 TP |
2164 | extern "C" int |
2165 | pthread_attr_destroy (pthread_attr_t *attr) | |
1fd5e000 | 2166 | { |
15648790 | 2167 | if (!pthread_attr::is_good_object (attr)) |
9a08b2c0 CF |
2168 | return EINVAL; |
2169 | delete (*attr); | |
2170 | *attr = NULL; | |
1fd5e000 | 2171 | return 0; |
166b2571 | 2172 | } |
1fd5e000 | 2173 | |
1fd5e000 | 2174 | int |
01f58e41 | 2175 | pthread::join (pthread_t *thread, void **return_val) |
1fd5e000 | 2176 | { |
01f58e41 | 2177 | pthread_t joiner = self (); |
e9259cb2 | 2178 | |
09cbb9d6 | 2179 | joiner->testcancel (); |
f8c8e13b | 2180 | |
f6709c07 RC |
2181 | // Initialize return val with NULL |
2182 | if (return_val) | |
2183 | *return_val = NULL; | |
2184 | ||
15648790 | 2185 | if (!is_good_object (&joiner)) |
09cbb9d6 TP |
2186 | return EINVAL; |
2187 | ||
15648790 | 2188 | if (!is_good_object (thread)) |
9a08b2c0 | 2189 | return ESRCH; |
1fd5e000 | 2190 | |
a4cea440 | 2191 | if (equal (*thread,joiner)) |
f6709c07 | 2192 | return EDEADLK; |
e9259cb2 | 2193 | |
15648790 | 2194 | (*thread)->mutex.lock (); |
43c3c4e3 | 2195 | |
f1f13795 | 2196 | if ((*thread)->attr.joinable == PTHREAD_CREATE_DETACHED) |
e9259cb2 | 2197 | { |
15648790 | 2198 | (*thread)->mutex.unlock (); |
43c3c4e3 | 2199 | return EINVAL; |
e9259cb2 | 2200 | } |
1fd5e000 | 2201 | else |
9a08b2c0 | 2202 | { |
e9259cb2 | 2203 | (*thread)->joiner = joiner; |
007276b3 | 2204 | (*thread)->attr.joinable = PTHREAD_CREATE_DETACHED; |
15648790 | 2205 | (*thread)->mutex.unlock (); |
9450ad0d | 2206 | |
09cbb9d6 | 2207 | switch (cancelable_wait ((*thread)->win32_obj_id, INFINITE, false)) |
9a47ce7f CF |
2208 | { |
2209 | case WAIT_OBJECT_0: | |
2210 | if (return_val) | |
2211 | *return_val = (*thread)->return_ptr; | |
2212 | delete (*thread); | |
2213 | break; | |
2214 | case WAIT_CANCELED: | |
2215 | // set joined thread back to joinable since we got canceled | |
2216 | (*thread)->joiner = NULL; | |
2217 | (*thread)->attr.joinable = PTHREAD_CREATE_JOINABLE; | |
2218 | joiner->cancel_self (); | |
2219 | // never reached | |
2220 | break; | |
2221 | default: | |
2222 | // should never happen | |
2223 | return EINVAL; | |
2224 | } | |
09cbb9d6 | 2225 | } |
1fd5e000 CF |
2226 | |
2227 | return 0; | |
166b2571 | 2228 | } |
1fd5e000 CF |
2229 | |
2230 | int | |
01f58e41 | 2231 | pthread::detach (pthread_t *thread) |
1fd5e000 | 2232 | { |
15648790 | 2233 | if (!is_good_object (thread)) |
9a08b2c0 | 2234 | return ESRCH; |
1fd5e000 | 2235 | |
15648790 | 2236 | (*thread)->mutex.lock (); |
5c83f260 | 2237 | if ((*thread)->attr.joinable == PTHREAD_CREATE_DETACHED) |
9a08b2c0 | 2238 | { |
15648790 | 2239 | (*thread)->mutex.unlock (); |
9a08b2c0 CF |
2240 | return EINVAL; |
2241 | } | |
1fd5e000 | 2242 | |
43c3c4e3 | 2243 | // check if thread is still alive |
e1e196a2 | 2244 | if ((*thread)->running && WaitForSingleObject ((*thread)->win32_obj_id, 0) == WAIT_TIMEOUT) |
43c3c4e3 RC |
2245 | { |
2246 | // force cleanup on exit | |
2247 | (*thread)->joiner = *thread; | |
2248 | (*thread)->attr.joinable = PTHREAD_CREATE_DETACHED; | |
15648790 | 2249 | (*thread)->mutex.unlock (); |
43c3c4e3 RC |
2250 | } |
2251 | else | |
f6709c07 RC |
2252 | { |
2253 | // thread has already terminated. | |
15648790 | 2254 | (*thread)->mutex.unlock (); |
43c3c4e3 | 2255 | delete (*thread); |
f6709c07 | 2256 | } |
e9259cb2 | 2257 | |
1fd5e000 CF |
2258 | return 0; |
2259 | } | |
2260 | ||
2261 | int | |
01f58e41 | 2262 | pthread::suspend (pthread_t *thread) |
1fd5e000 | 2263 | { |
15648790 | 2264 | if (!is_good_object (thread)) |
9a08b2c0 | 2265 | return ESRCH; |
1fd5e000 | 2266 | |
9a08b2c0 CF |
2267 | if ((*thread)->suspended == false) |
2268 | { | |
2269 | (*thread)->suspended = true; | |
2270 | SuspendThread ((*thread)->win32_obj_id); | |
2271 | } | |
1fd5e000 CF |
2272 | |
2273 | return 0; | |
2274 | } | |
2275 | ||
2276 | ||
2277 | int | |
01f58e41 | 2278 | pthread::resume (pthread_t *thread) |
1fd5e000 | 2279 | { |
15648790 | 2280 | if (!is_good_object (thread)) |
9a08b2c0 | 2281 | return ESRCH; |
1fd5e000 | 2282 | |
9a08b2c0 CF |
2283 | if ((*thread)->suspended == true) |
2284 | ResumeThread ((*thread)->win32_obj_id); | |
2285 | (*thread)->suspended = false; | |
1fd5e000 CF |
2286 | |
2287 | return 0; | |
2288 | } | |
2289 | ||
79ed4300 CF |
2290 | /* provided for source level compatability. |
2291 | See http://www.opengroup.org/onlinepubs/007908799/xsh/pthread_getconcurrency.html | |
2292 | */ | |
6a80a133 TP |
2293 | extern "C" int |
2294 | pthread_getconcurrency (void) | |
5c83f260 RC |
2295 | { |
2296 | return MT_INTERFACE->concurrency; | |
2297 | } | |
2298 | ||
79ed4300 | 2299 | /* keep this in sync with sched.cc */ |
6a80a133 TP |
2300 | extern "C" int |
2301 | pthread_getschedparam (pthread_t thread, int *policy, | |
5c83f260 RC |
2302 | struct sched_param *param) |
2303 | { | |
15648790 | 2304 | if (!pthread::is_good_object (&thread)) |
5c83f260 RC |
2305 | return ESRCH; |
2306 | *policy = SCHED_FIFO; | |
79ed4300 CF |
2307 | /* we don't return the current effective priority, we return the current |
2308 | requested priority */ | |
5c83f260 RC |
2309 | *param = thread->attr.schedparam; |
2310 | return 0; | |
2311 | } | |
2312 | ||
79ed4300 | 2313 | /* Thread SpecificData */ |
6a80a133 TP |
2314 | extern "C" int |
2315 | pthread_key_create (pthread_key_t *key, void (*destructor) (void *)) | |
1fd5e000 | 2316 | { |
79ed4300 CF |
2317 | /* The opengroup docs don't define if we should check this or not, |
2318 | but creation is relatively rare. */ | |
15648790 | 2319 | if (pthread_key::is_good_object (key)) |
9a08b2c0 CF |
2320 | return EBUSY; |
2321 | ||
5c83f260 | 2322 | *key = new pthread_key (destructor); |
9a08b2c0 | 2323 | |
15648790 | 2324 | if (!pthread_key::is_good_object (key)) |
9a08b2c0 CF |
2325 | { |
2326 | delete (*key); | |
2327 | *key = NULL; | |
2328 | return EAGAIN; | |
2329 | } | |
2330 | return 0; | |
166b2571 | 2331 | } |
1fd5e000 | 2332 | |
6a80a133 TP |
2333 | extern "C" int |
2334 | pthread_key_delete (pthread_key_t key) | |
1fd5e000 | 2335 | { |
15648790 | 2336 | if (!pthread_key::is_good_object (&key)) |
9a08b2c0 CF |
2337 | return EINVAL; |
2338 | ||
5c83f260 RC |
2339 | delete (key); |
2340 | return 0; | |
2341 | } | |
2342 | ||
79ed4300 CF |
2343 | /* provided for source level compatability. See |
2344 | http://www.opengroup.org/onlinepubs/007908799/xsh/pthread_getconcurrency.html | |
2345 | */ | |
6a80a133 TP |
2346 | extern "C" int |
2347 | pthread_setconcurrency (int new_level) | |
5c83f260 RC |
2348 | { |
2349 | if (new_level < 0) | |
2350 | return EINVAL; | |
2351 | MT_INTERFACE->concurrency = new_level; | |
9a08b2c0 | 2352 | return 0; |
166b2571 | 2353 | } |
9a08b2c0 | 2354 | |
79ed4300 | 2355 | /* keep syncronised with sched.cc */ |
6a80a133 TP |
2356 | extern "C" int |
2357 | pthread_setschedparam (pthread_t thread, int policy, | |
5c83f260 RC |
2358 | const struct sched_param *param) |
2359 | { | |
15648790 | 2360 | if (!pthread::is_good_object (&thread)) |
5c83f260 RC |
2361 | return ESRCH; |
2362 | if (policy != SCHED_FIFO) | |
2363 | return ENOTSUP; | |
2364 | if (!param) | |
2365 | return EINVAL; | |
2366 | int rv = | |
2367 | sched_set_thread_priority (thread->win32_obj_id, param->sched_priority); | |
2368 | if (!rv) | |
2369 | thread->attr.schedparam.sched_priority = param->sched_priority; | |
2370 | return rv; | |
2371 | } | |
2372 | ||
9a08b2c0 | 2373 | |
6a80a133 TP |
2374 | extern "C" int |
2375 | pthread_setspecific (pthread_key_t key, const void *value) | |
1fd5e000 | 2376 | { |
15648790 | 2377 | if (!pthread_key::is_good_object (&key)) |
9a08b2c0 CF |
2378 | return EINVAL; |
2379 | (key)->set (value); | |
2380 | return 0; | |
166b2571 | 2381 | } |
9a08b2c0 | 2382 | |
6a80a133 TP |
2383 | extern "C" void * |
2384 | pthread_getspecific (pthread_key_t key) | |
1fd5e000 | 2385 | { |
15648790 | 2386 | if (!pthread_key::is_good_object (&key)) |
9a08b2c0 CF |
2387 | return NULL; |
2388 | ||
2389 | return (key)->get (); | |
2390 | ||
166b2571 | 2391 | } |
1fd5e000 | 2392 | |
79ed4300 | 2393 | /* Thread synchronisation */ |
8b1978c3 | 2394 | bool |
15648790 | 2395 | pthread_cond::is_good_object (pthread_cond_t const *cond) |
8b1978c3 RC |
2396 | { |
2397 | if (verifyable_object_isvalid (cond, PTHREAD_COND_MAGIC) != VALID_OBJECT) | |
2398 | return false; | |
2399 | return true; | |
2400 | } | |
2401 | ||
2402 | bool | |
15648790 | 2403 | pthread_cond::is_good_initializer (pthread_cond_t const *cond) |
8b1978c3 RC |
2404 | { |
2405 | if (verifyable_object_isvalid (cond, PTHREAD_COND_MAGIC, PTHREAD_COND_INITIALIZER) != VALID_STATIC_OBJECT) | |
2406 | return false; | |
2407 | return true; | |
2408 | } | |
2409 | ||
2410 | bool | |
15648790 | 2411 | pthread_cond::is_good_initializer_or_object (pthread_cond_t const *cond) |
8b1978c3 RC |
2412 | { |
2413 | if (verifyable_object_isvalid (cond, PTHREAD_COND_MAGIC, PTHREAD_COND_INITIALIZER) == INVALID_OBJECT) | |
2414 | return false; | |
2415 | return true; | |
2416 | } | |
5ccbf4b6 | 2417 | |
ed9fe455 | 2418 | bool |
15648790 | 2419 | pthread_cond::is_good_initializer_or_bad_object (pthread_cond_t const *cond) |
ed9fe455 TP |
2420 | { |
2421 | verifyable_object_state objectState = verifyable_object_isvalid (cond, PTHREAD_COND_MAGIC, PTHREAD_COND_INITIALIZER); | |
2422 | if (objectState == VALID_OBJECT) | |
2423 | return false; | |
2424 | return true; | |
2425 | } | |
2426 | ||
6a80a133 TP |
2427 | extern "C" int |
2428 | pthread_cond_destroy (pthread_cond_t *cond) | |
5ccbf4b6 | 2429 | { |
15648790 | 2430 | if (pthread_cond::is_good_initializer (cond)) |
f38ac9b7 | 2431 | return 0; |
15648790 | 2432 | if (!pthread_cond::is_good_object (cond)) |
9a08b2c0 | 2433 | return EINVAL; |
5ccbf4b6 | 2434 | |
79ed4300 | 2435 | /* reads are atomic */ |
9a08b2c0 CF |
2436 | if ((*cond)->waiting) |
2437 | return EBUSY; | |
5ccbf4b6 | 2438 | |
9a08b2c0 CF |
2439 | delete (*cond); |
2440 | *cond = NULL; | |
5ccbf4b6 | 2441 | |
5ccbf4b6 CF |
2442 | return 0; |
2443 | } | |
2444 | ||
2445 | int | |
ed9fe455 | 2446 | pthread_cond::init (pthread_cond_t *cond, const pthread_condattr_t *attr) |
5ccbf4b6 | 2447 | { |
15648790 | 2448 | if (attr && !pthread_condattr::is_good_object (attr)) |
5ccbf4b6 | 2449 | return EINVAL; |
15648790 | 2450 | if (!cond_initialization_lock.lock ()) |
ed9fe455 | 2451 | return EINVAL; |
5ccbf4b6 | 2452 | |
15648790 | 2453 | if (!is_good_initializer_or_bad_object (cond)) |
ed9fe455 | 2454 | { |
15648790 | 2455 | cond_initialization_lock.unlock (); |
ed9fe455 TP |
2456 | return EBUSY; |
2457 | } | |
5ccbf4b6 | 2458 | |
9a08b2c0 | 2459 | *cond = new pthread_cond (attr ? (*attr) : NULL); |
15648790 | 2460 | if (!is_good_object (cond)) |
9a08b2c0 CF |
2461 | { |
2462 | delete (*cond); | |
2463 | *cond = NULL; | |
15648790 | 2464 | cond_initialization_lock.unlock (); |
9a08b2c0 CF |
2465 | return EAGAIN; |
2466 | } | |
15648790 | 2467 | cond_initialization_lock.unlock (); |
9a08b2c0 | 2468 | return 0; |
5ccbf4b6 CF |
2469 | } |
2470 | ||
6a80a133 TP |
2471 | extern "C" int |
2472 | pthread_cond_broadcast (pthread_cond_t *cond) | |
5ccbf4b6 | 2473 | { |
15648790 | 2474 | if (pthread_cond::is_good_initializer (cond)) |
f592b05d | 2475 | return 0; |
15648790 | 2476 | if (!pthread_cond::is_good_object (cond)) |
9a08b2c0 | 2477 | return EINVAL; |
94b03f23 | 2478 | |
15648790 | 2479 | (*cond)->unblock (true); |
5ccbf4b6 CF |
2480 | |
2481 | return 0; | |
2482 | } | |
2483 | ||
6a80a133 TP |
2484 | extern "C" int |
2485 | pthread_cond_signal (pthread_cond_t *cond) | |
5ccbf4b6 | 2486 | { |
15648790 | 2487 | if (pthread_cond::is_good_initializer (cond)) |
f592b05d | 2488 | return 0; |
15648790 | 2489 | if (!pthread_cond::is_good_object (cond)) |
9a08b2c0 | 2490 | return EINVAL; |
5ccbf4b6 | 2491 | |
15648790 | 2492 | (*cond)->unblock (false); |
5ccbf4b6 CF |
2493 | |
2494 | return 0; | |
2495 | } | |
2496 | ||
f592b05d | 2497 | static int |
86336f4f | 2498 | __pthread_cond_dowait (pthread_cond_t *cond, pthread_mutex_t *mutex, |
f592b05d TP |
2499 | DWORD waitlength) |
2500 | { | |
15648790 | 2501 | if (!pthread_mutex::is_good_object (mutex)) |
f592b05d | 2502 | return EINVAL; |
15648790 | 2503 | if (!pthread_mutex::can_be_unlocked (mutex)) |
f592b05d TP |
2504 | return EPERM; |
2505 | ||
15648790 | 2506 | if (pthread_cond::is_good_initializer (cond)) |
ed9fe455 | 2507 | pthread_cond::init (cond, NULL); |
15648790 | 2508 | if (!pthread_cond::is_good_object (cond)) |
5ccbf4b6 | 2509 | return EINVAL; |
462f4eff | 2510 | |
15648790 | 2511 | return (*cond)->wait (*mutex, waitlength); |
5ccbf4b6 CF |
2512 | } |
2513 | ||
86336f4f RC |
2514 | extern "C" int |
2515 | pthread_cond_timedwait (pthread_cond_t *cond, pthread_mutex_t *mutex, | |
2516 | const struct timespec *abstime) | |
94b03f23 | 2517 | { |
f592b05d TP |
2518 | struct timeval tv; |
2519 | long waitlength; | |
2520 | ||
2521 | pthread_testcancel (); | |
2522 | ||
4d029f39 | 2523 | if (check_valid_pointer (abstime)) |
94b03f23 | 2524 | return EINVAL; |
f592b05d TP |
2525 | |
2526 | gettimeofday (&tv, NULL); | |
2527 | waitlength = abstime->tv_sec * 1000 + abstime->tv_nsec / (1000 * 1000); | |
2528 | waitlength -= tv.tv_sec * 1000 + tv.tv_usec / 1000; | |
86336f4f RC |
2529 | if (waitlength < 0) |
2530 | return ETIMEDOUT; | |
2531 | return __pthread_cond_dowait (cond, mutex, waitlength); | |
2532 | } | |
9a08b2c0 | 2533 | |
86336f4f RC |
2534 | extern "C" int |
2535 | pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex) | |
2536 | { | |
f592b05d TP |
2537 | pthread_testcancel (); |
2538 | ||
86336f4f | 2539 | return __pthread_cond_dowait (cond, mutex, INFINITE); |
5ccbf4b6 CF |
2540 | } |
2541 | ||
6a80a133 TP |
2542 | extern "C" int |
2543 | pthread_condattr_init (pthread_condattr_t *condattr) | |
5ccbf4b6 | 2544 | { |
00e6660b | 2545 | if (pthread_condattr::is_good_object (condattr)) |
1c80421c | 2546 | return EBUSY; |
00e6660b | 2547 | |
9a08b2c0 | 2548 | *condattr = new pthread_condattr; |
15648790 | 2549 | if (!pthread_condattr::is_good_object (condattr)) |
9a08b2c0 CF |
2550 | { |
2551 | delete (*condattr); | |
2552 | *condattr = NULL; | |
00e6660b | 2553 | return ENOMEM; |
9a08b2c0 | 2554 | } |
5ccbf4b6 CF |
2555 | return 0; |
2556 | } | |
2557 | ||
6a80a133 TP |
2558 | extern "C" int |
2559 | pthread_condattr_getpshared (const pthread_condattr_t *attr, int *pshared) | |
5ccbf4b6 | 2560 | { |
15648790 | 2561 | if (!pthread_condattr::is_good_object (attr)) |
5ccbf4b6 | 2562 | return EINVAL; |
9a08b2c0 | 2563 | *pshared = (*attr)->shared; |
5ccbf4b6 CF |
2564 | return 0; |
2565 | } | |
2566 | ||
6a80a133 TP |
2567 | extern "C" int |
2568 | pthread_condattr_setpshared (pthread_condattr_t *attr, int pshared) | |
5ccbf4b6 | 2569 | { |
15648790 | 2570 | if (!pthread_condattr::is_good_object (attr)) |
5ccbf4b6 | 2571 | return EINVAL; |
9a08b2c0 CF |
2572 | if ((pshared < 0) || (pshared > 1)) |
2573 | return EINVAL; | |
79ed4300 | 2574 | /* shared cond vars not currently supported */ |
9450ad0d RC |
2575 | if (pshared != PTHREAD_PROCESS_PRIVATE) |
2576 | return EINVAL; | |
9a08b2c0 | 2577 | (*attr)->shared = pshared; |
5ccbf4b6 CF |
2578 | return 0; |
2579 | } | |
2580 | ||
6a80a133 TP |
2581 | extern "C" int |
2582 | pthread_condattr_destroy (pthread_condattr_t *condattr) | |
5ccbf4b6 | 2583 | { |
15648790 | 2584 | if (!pthread_condattr::is_good_object (condattr)) |
9a08b2c0 CF |
2585 | return EINVAL; |
2586 | delete (*condattr); | |
2587 | *condattr = NULL; | |
5ccbf4b6 CF |
2588 | return 0; |
2589 | } | |
2590 | ||
00d296a3 TP |
2591 | /* RW locks */ |
2592 | bool | |
15648790 | 2593 | pthread_rwlock::is_good_object (pthread_rwlock_t const *rwlock) |
00d296a3 TP |
2594 | { |
2595 | if (verifyable_object_isvalid (rwlock, PTHREAD_RWLOCK_MAGIC) != VALID_OBJECT) | |
2596 | return false; | |
2597 | return true; | |
2598 | } | |
2599 | ||
2600 | bool | |
15648790 | 2601 | pthread_rwlock::is_good_initializer (pthread_rwlock_t const *rwlock) |
00d296a3 TP |
2602 | { |
2603 | if (verifyable_object_isvalid (rwlock, PTHREAD_RWLOCK_MAGIC, PTHREAD_RWLOCK_INITIALIZER) != VALID_STATIC_OBJECT) | |
2604 | return false; | |
2605 | return true; | |
2606 | } | |
2607 | ||
2608 | bool | |
15648790 | 2609 | pthread_rwlock::is_good_initializer_or_object (pthread_rwlock_t const *rwlock) |
00d296a3 TP |
2610 | { |
2611 | if (verifyable_object_isvalid (rwlock, PTHREAD_RWLOCK_MAGIC, PTHREAD_RWLOCK_INITIALIZER) == INVALID_OBJECT) | |
2612 | return false; | |
2613 | return true; | |
2614 | } | |
2615 | ||
2616 | bool | |
15648790 | 2617 | pthread_rwlock::is_good_initializer_or_bad_object (pthread_rwlock_t const *rwlock) |
00d296a3 TP |
2618 | { |
2619 | verifyable_object_state objectState = verifyable_object_isvalid (rwlock, PTHREAD_RWLOCK_MAGIC, PTHREAD_RWLOCK_INITIALIZER); | |
2620 | if (objectState == VALID_OBJECT) | |
2621 | return false; | |
2622 | return true; | |
2623 | } | |
2624 | ||
6a80a133 TP |
2625 | extern "C" int |
2626 | pthread_rwlock_destroy (pthread_rwlock_t *rwlock) | |
00d296a3 | 2627 | { |
15648790 | 2628 | if (pthread_rwlock::is_good_initializer (rwlock)) |
00d296a3 | 2629 | return 0; |
15648790 | 2630 | if (!pthread_rwlock::is_good_object (rwlock)) |
00d296a3 TP |
2631 | return EINVAL; |
2632 | ||
2633 | if ((*rwlock)->writer || (*rwlock)->readers || | |
15648790 | 2634 | (*rwlock)->waiting_readers || (*rwlock)->waiting_writers) |
00d296a3 TP |
2635 | return EBUSY; |
2636 | ||
2637 | delete (*rwlock); | |
2638 | *rwlock = NULL; | |
2639 | ||
2640 | return 0; | |
2641 | } | |
2642 | ||
2643 | int | |
2644 | pthread_rwlock::init (pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *attr) | |
2645 | { | |
15648790 | 2646 | if (attr && !pthread_rwlockattr::is_good_object (attr)) |
00d296a3 | 2647 | return EINVAL; |
15648790 | 2648 | if (!rwlock_initialization_lock.lock ()) |
00d296a3 TP |
2649 | return EINVAL; |
2650 | ||
15648790 | 2651 | if (!is_good_initializer_or_bad_object (rwlock)) |
00d296a3 | 2652 | { |
15648790 | 2653 | rwlock_initialization_lock.unlock (); |
00d296a3 TP |
2654 | return EBUSY; |
2655 | } | |
2656 | ||
2657 | *rwlock = new pthread_rwlock (attr ? (*attr) : NULL); | |
15648790 | 2658 | if (!is_good_object (rwlock)) |
00d296a3 TP |
2659 | { |
2660 | delete (*rwlock); | |
2661 | *rwlock = NULL; | |
15648790 | 2662 | rwlock_initialization_lock.unlock (); |
00d296a3 TP |
2663 | return EAGAIN; |
2664 | } | |
15648790 | 2665 | rwlock_initialization_lock.unlock (); |
00d296a3 TP |
2666 | return 0; |
2667 | } | |
2668 | ||
6a80a133 TP |
2669 | extern "C" int |
2670 | pthread_rwlock_rdlock (pthread_rwlock_t *rwlock) | |
00d296a3 TP |
2671 | { |
2672 | pthread_testcancel (); | |
2673 | ||
15648790 | 2674 | if (pthread_rwlock::is_good_initializer (rwlock)) |
00d296a3 | 2675 | pthread_rwlock::init (rwlock, NULL); |
15648790 | 2676 | if (!pthread_rwlock::is_good_object (rwlock)) |
00d296a3 TP |
2677 | return EINVAL; |
2678 | ||
15648790 | 2679 | return (*rwlock)->rdlock (); |
00d296a3 TP |
2680 | } |
2681 | ||
6a80a133 TP |
2682 | extern "C" int |
2683 | pthread_rwlock_tryrdlock (pthread_rwlock_t *rwlock) | |
00d296a3 | 2684 | { |
15648790 | 2685 | if (pthread_rwlock::is_good_initializer (rwlock)) |
00d296a3 | 2686 | pthread_rwlock::init (rwlock, NULL); |
15648790 | 2687 | if (!pthread_rwlock::is_good_object (rwlock)) |
00d296a3 TP |
2688 | return EINVAL; |
2689 | ||
15648790 | 2690 | return (*rwlock)->tryrdlock (); |
00d296a3 TP |
2691 | } |
2692 | ||
6a80a133 TP |
2693 | extern "C" int |
2694 | pthread_rwlock_wrlock (pthread_rwlock_t *rwlock) | |
00d296a3 TP |
2695 | { |
2696 | pthread_testcancel (); | |
2697 | ||
15648790 | 2698 | if (pthread_rwlock::is_good_initializer (rwlock)) |
00d296a3 | 2699 | pthread_rwlock::init (rwlock, NULL); |
15648790 | 2700 | if (!pthread_rwlock::is_good_object (rwlock)) |
00d296a3 TP |
2701 | return EINVAL; |
2702 | ||
15648790 | 2703 | return (*rwlock)->wrlock (); |
00d296a3 TP |
2704 | } |
2705 | ||
6a80a133 TP |
2706 | extern "C" int |
2707 | pthread_rwlock_trywrlock (pthread_rwlock_t *rwlock) | |
00d296a3 | 2708 | { |
15648790 | 2709 | if (pthread_rwlock::is_good_initializer (rwlock)) |
00d296a3 | 2710 | pthread_rwlock::init (rwlock, NULL); |
15648790 | 2711 | if (!pthread_rwlock::is_good_object (rwlock)) |
00d296a3 TP |
2712 | return EINVAL; |
2713 | ||
15648790 | 2714 | return (*rwlock)->trywrlock (); |
00d296a3 TP |
2715 | } |
2716 | ||
6a80a133 TP |
2717 | extern "C" int |
2718 | pthread_rwlock_unlock (pthread_rwlock_t *rwlock) | |
00d296a3 | 2719 | { |
15648790 | 2720 | if (pthread_rwlock::is_good_initializer (rwlock)) |
00d296a3 | 2721 | return 0; |
15648790 | 2722 | if (!pthread_rwlock::is_good_object (rwlock)) |
00d296a3 TP |
2723 | return EINVAL; |
2724 | ||
15648790 | 2725 | return (*rwlock)->unlock (); |
00d296a3 TP |
2726 | } |
2727 | ||
6a80a133 TP |
2728 | extern "C" int |
2729 | pthread_rwlockattr_init (pthread_rwlockattr_t *rwlockattr) | |
00d296a3 | 2730 | { |
00e6660b | 2731 | if (pthread_rwlockattr::is_good_object (rwlockattr)) |
1c80421c | 2732 | return EBUSY; |
00e6660b | 2733 | |
00d296a3 | 2734 | *rwlockattr = new pthread_rwlockattr; |
15648790 | 2735 | if (!pthread_rwlockattr::is_good_object (rwlockattr)) |
00d296a3 TP |
2736 | { |
2737 | delete (*rwlockattr); | |
2738 | *rwlockattr = NULL; | |
00e6660b | 2739 | return ENOMEM; |
00d296a3 TP |
2740 | } |
2741 | return 0; | |
2742 | } | |
2743 | ||
6a80a133 TP |
2744 | extern "C" int |
2745 | pthread_rwlockattr_getpshared (const pthread_rwlockattr_t *attr, int *pshared) | |
00d296a3 | 2746 | { |
15648790 | 2747 | if (!pthread_rwlockattr::is_good_object (attr)) |
00d296a3 TP |
2748 | return EINVAL; |
2749 | *pshared = (*attr)->shared; | |
2750 | return 0; | |
2751 | } | |
2752 | ||
6a80a133 TP |
2753 | extern "C" int |
2754 | pthread_rwlockattr_setpshared (pthread_rwlockattr_t *attr, int pshared) | |
00d296a3 | 2755 | { |
15648790 | 2756 | if (!pthread_rwlockattr::is_good_object (attr)) |
00d296a3 TP |
2757 | return EINVAL; |
2758 | if ((pshared < 0) || (pshared > 1)) | |
2759 | return EINVAL; | |
2760 | /* shared rwlock vars not currently supported */ | |
2761 | if (pshared != PTHREAD_PROCESS_PRIVATE) | |
2762 | return EINVAL; | |
2763 | (*attr)->shared = pshared; | |
2764 | return 0; | |
2765 | } | |
2766 | ||
6a80a133 TP |
2767 | extern "C" int |
2768 | pthread_rwlockattr_destroy (pthread_rwlockattr_t *rwlockattr) | |
00d296a3 | 2769 | { |
15648790 | 2770 | if (!pthread_rwlockattr::is_good_object (rwlockattr)) |
00d296a3 TP |
2771 | return EINVAL; |
2772 | delete (*rwlockattr); | |
2773 | *rwlockattr = NULL; | |
2774 | return 0; | |
2775 | } | |
2776 | ||
79ed4300 | 2777 | /* Thread signal */ |
6a80a133 TP |
2778 | extern "C" int |
2779 | pthread_kill (pthread_t thread, int sig) | |
1fd5e000 | 2780 | { |
79ed4300 | 2781 | // lock myself, for the use of thread2signal |
ac9841a0 | 2782 | // two different kills might clash: FIXME |
1fd5e000 | 2783 | |
15648790 | 2784 | if (!pthread::is_good_object (&thread)) |
9a08b2c0 CF |
2785 | return EINVAL; |
2786 | ||
5c83f260 RC |
2787 | if (thread->sigs) |
2788 | myself->setthread2signal (thread); | |
1fd5e000 | 2789 | |
d25c187f | 2790 | int rval = raise (sig); |
1fd5e000 | 2791 | |
94b03f23 | 2792 | // unlock myself |
1fd5e000 | 2793 | return rval; |
166b2571 | 2794 | } |
1fd5e000 | 2795 | |
6a80a133 TP |
2796 | extern "C" int |
2797 | pthread_sigmask (int operation, const sigset_t *set, sigset_t *old_set) | |
1fd5e000 | 2798 | { |
007276b3 | 2799 | pthread *thread = pthread::self (); |
1fd5e000 | 2800 | |
94b03f23 CF |
2801 | // lock this myself, for the use of thread2signal |
2802 | // two differt kills might clash: FIXME | |
1fd5e000 | 2803 | |
9a08b2c0 CF |
2804 | if (thread->sigs) |
2805 | myself->setthread2signal (thread); | |
1fd5e000 CF |
2806 | |
2807 | int rval = sigprocmask (operation, set, old_set); | |
2808 | ||
94b03f23 | 2809 | // unlock this myself |
1fd5e000 CF |
2810 | |
2811 | return rval; | |
166b2571 | 2812 | } |
1fd5e000 | 2813 | |
f9f2c119 | 2814 | /* ID */ |
1fd5e000 | 2815 | |
9306ba2e | 2816 | extern "C" int |
6a80a133 | 2817 | pthread_equal (pthread_t t1, pthread_t t2) |
1fd5e000 | 2818 | { |
a4cea440 | 2819 | return pthread::equal (t1, t2); |
166b2571 | 2820 | } |
1fd5e000 | 2821 | |
79ed4300 | 2822 | /* Mutexes */ |
1fd5e000 | 2823 | |
881ffcb4 CF |
2824 | /* FIXME: there's a potential race with PTHREAD_MUTEX_INITALIZER: |
2825 | the mutex is not actually inited until the first use. | |
2826 | So two threads trying to lock/trylock may collide. | |
2827 | Solution: we need a global mutex on mutex creation, or possibly simply | |
2828 | on all constructors that allow INITIALIZER macros. | |
2829 | the lock should be very small: only around the init routine, not | |
2830 | every test, or all mutex access will be synchronised. */ | |
5c83f260 | 2831 | |
1fd5e000 | 2832 | int |
eb208df0 | 2833 | pthread_mutex::init (pthread_mutex_t *mutex, |
f9f2c119 | 2834 | const pthread_mutexattr_t *attr) |
1fd5e000 | 2835 | { |
15648790 | 2836 | if (attr && !pthread_mutexattr::is_good_object (attr) || check_valid_pointer (mutex)) |
9a08b2c0 | 2837 | return EINVAL; |
15648790 | 2838 | if (!mutex_initialization_lock.lock ()) |
06175d0a | 2839 | return EINVAL; |
1fd5e000 | 2840 | |
15648790 | 2841 | if (!is_good_initializer_or_bad_object (mutex)) |
eb208df0 | 2842 | { |
15648790 | 2843 | mutex_initialization_lock.unlock (); |
eb208df0 RC |
2844 | return EBUSY; |
2845 | } | |
1fd5e000 | 2846 | |
9a08b2c0 | 2847 | *mutex = new pthread_mutex (attr ? (*attr) : NULL); |
15648790 | 2848 | if (!is_good_object (mutex)) |
9a08b2c0 CF |
2849 | { |
2850 | delete (*mutex); | |
2851 | *mutex = NULL; | |
15648790 | 2852 | mutex_initialization_lock.unlock (); |
9a08b2c0 CF |
2853 | return EAGAIN; |
2854 | } | |
15648790 | 2855 | mutex_initialization_lock.unlock (); |
1fd5e000 | 2856 | return 0; |
166b2571 | 2857 | } |
1fd5e000 | 2858 | |
6a80a133 TP |
2859 | extern "C" int |
2860 | pthread_mutex_getprioceiling (const pthread_mutex_t *mutex, | |
5c83f260 RC |
2861 | int *prioceiling) |
2862 | { | |
4d029f39 | 2863 | pthread_mutex_t *themutex = (pthread_mutex_t *) mutex; |
15648790 | 2864 | if (pthread_mutex::is_good_initializer (mutex)) |
eb208df0 | 2865 | pthread_mutex::init ((pthread_mutex_t *) mutex, NULL); |
15648790 | 2866 | if (!pthread_mutex::is_good_object (themutex)) |
5c83f260 | 2867 | return EINVAL; |
79ed4300 CF |
2868 | /* We don't define _POSIX_THREAD_PRIO_PROTECT because we do't currently support |
2869 | mutex priorities. | |
2870 | ||
2871 | We can support mutex priorities in the future though: | |
2872 | Store a priority with each mutex. | |
2873 | When the mutex is optained, set the thread priority as appropriate | |
2874 | When the mutex is released, reset the thread priority. */ | |
5c83f260 RC |
2875 | return ENOSYS; |
2876 | } | |
2877 | ||
9306ba2e | 2878 | extern "C" int |
6a80a133 | 2879 | pthread_mutex_lock (pthread_mutex_t *mutex) |
1fd5e000 | 2880 | { |
3c76c076 | 2881 | pthread_mutex_t *themutex = mutex; |
15648790 TP |
2882 | /* This could be simplified via is_good_initializer_or_object |
2883 | and is_good_initializer, but in a performance critical call like this.... | |
79ed4300 | 2884 | no. */ |
86336f4f | 2885 | switch (verifyable_object_isvalid (themutex, PTHREAD_MUTEX_MAGIC, PTHREAD_MUTEX_INITIALIZER)) |
c918cf94 | 2886 | { |
86336f4f RC |
2887 | case INVALID_OBJECT: |
2888 | return EINVAL; | |
2889 | break; | |
2890 | case VALID_STATIC_OBJECT: | |
15648790 | 2891 | if (pthread_mutex::is_good_initializer (mutex)) |
9c510edc | 2892 | { |
eb208df0 | 2893 | int rv = pthread_mutex::init (mutex, NULL); |
79ed4300 | 2894 | if (rv && rv != EBUSY) |
86336f4f | 2895 | return rv; |
9c510edc | 2896 | } |
eb208df0 | 2897 | /* No else needed. If it's been initialized while we waited, |
bd2b5664 | 2898 | we can just attempt to lock it */ |
86336f4f RC |
2899 | break; |
2900 | case VALID_OBJECT: | |
2901 | break; | |
c918cf94 | 2902 | } |
15648790 | 2903 | return (*themutex)->lock (); |
166b2571 | 2904 | } |
1fd5e000 | 2905 | |
6a80a133 TP |
2906 | extern "C" int |
2907 | pthread_mutex_trylock (pthread_mutex_t *mutex) | |
1fd5e000 | 2908 | { |
3c76c076 | 2909 | pthread_mutex_t *themutex = mutex; |
15648790 | 2910 | if (pthread_mutex::is_good_initializer (mutex)) |
eb208df0 | 2911 | pthread_mutex::init (mutex, NULL); |
15648790 | 2912 | if (!pthread_mutex::is_good_object (themutex)) |
9a08b2c0 | 2913 | return EINVAL; |
15648790 | 2914 | return (*themutex)->trylock (); |
166b2571 | 2915 | } |
1fd5e000 | 2916 | |
6a80a133 TP |
2917 | extern "C" int |
2918 | pthread_mutex_unlock (pthread_mutex_t *mutex) | |
1fd5e000 | 2919 | { |
15648790 | 2920 | if (pthread_mutex::is_good_initializer (mutex)) |
eb208df0 | 2921 | pthread_mutex::init (mutex, NULL); |
15648790 | 2922 | if (!pthread_mutex::is_good_object (mutex)) |
9a08b2c0 | 2923 | return EINVAL; |
15648790 | 2924 | return (*mutex)->unlock (); |
166b2571 | 2925 | } |
1fd5e000 | 2926 | |
6a80a133 TP |
2927 | extern "C" int |
2928 | pthread_mutex_destroy (pthread_mutex_t *mutex) | |
1fd5e000 | 2929 | { |
5d68d1de TP |
2930 | int rv; |
2931 | ||
15648790 | 2932 | if (pthread_mutex::is_good_initializer (mutex)) |
5c83f260 | 2933 | return 0; |
15648790 | 2934 | if (!pthread_mutex::is_good_object (mutex)) |
9a08b2c0 | 2935 | return EINVAL; |
1fd5e000 | 2936 | |
15648790 | 2937 | rv = (*mutex)->destroy (); |
5d68d1de TP |
2938 | if (rv) |
2939 | return rv; | |
1fd5e000 | 2940 | |
9a08b2c0 | 2941 | *mutex = NULL; |
1fd5e000 | 2942 | return 0; |
166b2571 | 2943 | } |
1fd5e000 | 2944 | |
6a80a133 TP |
2945 | extern "C" int |
2946 | pthread_mutex_setprioceiling (pthread_mutex_t *mutex, int prioceiling, | |
5c83f260 RC |
2947 | int *old_ceiling) |
2948 | { | |
3c76c076 | 2949 | pthread_mutex_t *themutex = mutex; |
15648790 | 2950 | if (pthread_mutex::is_good_initializer (mutex)) |
eb208df0 | 2951 | pthread_mutex::init (mutex, NULL); |
15648790 | 2952 | if (!pthread_mutex::is_good_object (themutex)) |
5c83f260 RC |
2953 | return EINVAL; |
2954 | return ENOSYS; | |
2955 | } | |
2956 | ||
79ed4300 CF |
2957 | /* Win32 doesn't support mutex priorities - see __pthread_mutex_getprioceiling |
2958 | for more detail */ | |
6a80a133 TP |
2959 | extern "C" int |
2960 | pthread_mutexattr_getprotocol (const pthread_mutexattr_t *attr, | |
5c83f260 RC |
2961 | int *protocol) |
2962 | { | |
15648790 | 2963 | if (!pthread_mutexattr::is_good_object (attr)) |
5c83f260 RC |
2964 | return EINVAL; |
2965 | return ENOSYS; | |
2966 | } | |
2967 | ||
6a80a133 TP |
2968 | extern "C" int |
2969 | pthread_mutexattr_getpshared (const pthread_mutexattr_t *attr, | |
5c83f260 RC |
2970 | int *pshared) |
2971 | { | |
15648790 | 2972 | if (!pthread_mutexattr::is_good_object (attr)) |
5c83f260 RC |
2973 | return EINVAL; |
2974 | *pshared = (*attr)->pshared; | |
2975 | return 0; | |
2976 | } | |
2977 | ||
6a80a133 TP |
2978 | extern "C" int |
2979 | pthread_mutexattr_gettype (const pthread_mutexattr_t *attr, int *type) | |
5c83f260 | 2980 | { |
15648790 | 2981 | if (!pthread_mutexattr::is_good_object (attr)) |
5c83f260 RC |
2982 | return EINVAL; |
2983 | *type = (*attr)->mutextype; | |
2984 | return 0; | |
2985 | } | |
2986 | ||
5d68d1de | 2987 | /* FIXME: write and test process shared mutex's. */ |
6a80a133 TP |
2988 | extern "C" int |
2989 | pthread_mutexattr_init (pthread_mutexattr_t *attr) | |
5c83f260 | 2990 | { |
15648790 | 2991 | if (pthread_mutexattr::is_good_object (attr)) |
1c80421c | 2992 | return EBUSY; |
5c83f260 RC |
2993 | |
2994 | *attr = new pthread_mutexattr (); | |
15648790 | 2995 | if (!pthread_mutexattr::is_good_object (attr)) |
5c83f260 RC |
2996 | { |
2997 | delete (*attr); | |
2998 | *attr = NULL; | |
2999 | return ENOMEM; | |
3000 | } | |
3001 | return 0; | |
3002 | } | |
3003 | ||
6a80a133 TP |
3004 | extern "C" int |
3005 | pthread_mutexattr_destroy (pthread_mutexattr_t *attr) | |
5c83f260 | 3006 | { |
15648790 | 3007 | if (!pthread_mutexattr::is_good_object (attr)) |
5c83f260 RC |
3008 | return EINVAL; |
3009 | delete (*attr); | |
3010 | *attr = NULL; | |
3011 | return 0; | |
3012 | } | |
3013 | ||
3014 | ||
79ed4300 | 3015 | /* Win32 doesn't support mutex priorities */ |
6a80a133 TP |
3016 | extern "C" int |
3017 | pthread_mutexattr_setprotocol (pthread_mutexattr_t *attr, int protocol) | |
5c83f260 | 3018 | { |
15648790 | 3019 | if (!pthread_mutexattr::is_good_object (attr)) |
5c83f260 RC |
3020 | return EINVAL; |
3021 | return ENOSYS; | |
3022 | } | |
3023 | ||
79ed4300 | 3024 | /* Win32 doesn't support mutex priorities */ |
6a80a133 TP |
3025 | extern "C" int |
3026 | pthread_mutexattr_setprioceiling (pthread_mutexattr_t *attr, | |
5c83f260 RC |
3027 | int prioceiling) |
3028 | { | |
15648790 | 3029 | if (!pthread_mutexattr::is_good_object (attr)) |
5c83f260 RC |
3030 | return EINVAL; |
3031 | return ENOSYS; | |
3032 | } | |
3033 | ||
6a80a133 TP |
3034 | extern "C" int |
3035 | pthread_mutexattr_getprioceiling (const pthread_mutexattr_t *attr, | |
5c83f260 RC |
3036 | int *prioceiling) |
3037 | { | |
15648790 | 3038 | if (!pthread_mutexattr::is_good_object (attr)) |
5c83f260 RC |
3039 | return EINVAL; |
3040 | return ENOSYS; | |
3041 | } | |
3042 | ||
6a80a133 TP |
3043 | extern "C" int |
3044 | pthread_mutexattr_setpshared (pthread_mutexattr_t *attr, int pshared) | |
5c83f260 | 3045 | { |
15648790 | 3046 | if (!pthread_mutexattr::is_good_object (attr)) |
5c83f260 | 3047 | return EINVAL; |
79ed4300 | 3048 | /* we don't use pshared for anything as yet. We need to test PROCESS_SHARED |
f9f2c119 | 3049 | *functionality |
5c83f260 | 3050 | */ |
ac9841a0 | 3051 | if (pshared != PTHREAD_PROCESS_PRIVATE) |
5c83f260 RC |
3052 | return EINVAL; |
3053 | (*attr)->pshared = pshared; | |
3054 | return 0; | |
3055 | } | |
3056 | ||
6a80a133 TP |
3057 | /* see pthread_mutex_gettype */ |
3058 | extern "C" int | |
3059 | pthread_mutexattr_settype (pthread_mutexattr_t *attr, int type) | |
5c83f260 | 3060 | { |
15648790 | 3061 | if (!pthread_mutexattr::is_good_object (attr)) |
5c83f260 | 3062 | return EINVAL; |
9a47ce7f | 3063 | |
5d68d1de TP |
3064 | switch (type) |
3065 | { | |
3066 | case PTHREAD_MUTEX_ERRORCHECK: | |
3067 | case PTHREAD_MUTEX_RECURSIVE: | |
2ff03dc2 | 3068 | case PTHREAD_MUTEX_NORMAL: |
5d68d1de TP |
3069 | (*attr)->mutextype = type; |
3070 | break; | |
3071 | default: | |
3072 | return EINVAL; | |
3073 | } | |
3074 | ||
5c83f260 RC |
3075 | return 0; |
3076 | } | |
3077 | ||
79ed4300 | 3078 | /* Semaphores */ |
8b1978c3 RC |
3079 | |
3080 | /* static members */ | |
3081 | bool | |
15648790 | 3082 | semaphore::is_good_object (sem_t const * sem) |
8b1978c3 RC |
3083 | { |
3084 | if (verifyable_object_isvalid (sem, SEM_MAGIC) != VALID_OBJECT) | |
3085 | return false; | |
3086 | return true; | |
3087 | } | |
3088 | ||
1fd5e000 | 3089 | int |
01f58e41 | 3090 | semaphore::init (sem_t *sem, int pshared, unsigned int value) |
1fd5e000 | 3091 | { |
79ed4300 | 3092 | /* opengroup calls this undefined */ |
15648790 | 3093 | if (is_good_object (sem)) |
9a08b2c0 | 3094 | return EBUSY; |
1fd5e000 | 3095 | |
9a08b2c0 CF |
3096 | if (value > SEM_VALUE_MAX) |
3097 | return EINVAL; | |
1fd5e000 | 3098 | |
9a08b2c0 | 3099 | *sem = new semaphore (pshared, value); |
1fd5e000 | 3100 | |
15648790 | 3101 | if (!is_good_object (sem)) |
9a08b2c0 CF |
3102 | { |
3103 | delete (*sem); | |
3104 | *sem = NULL; | |
3105 | return EAGAIN; | |
3106 | } | |
1fd5e000 | 3107 | return 0; |
166b2571 | 3108 | } |
1fd5e000 CF |
3109 | |
3110 | int | |
01f58e41 | 3111 | semaphore::destroy (sem_t *sem) |
1fd5e000 | 3112 | { |
15648790 | 3113 | if (!is_good_object (sem)) |
9a08b2c0 | 3114 | return EINVAL; |
1fd5e000 | 3115 | |
79ed4300 | 3116 | /* FIXME - new feature - test for busy against threads... */ |
1fd5e000 | 3117 | |
9a08b2c0 CF |
3118 | delete (*sem); |
3119 | *sem = NULL; | |
1fd5e000 | 3120 | return 0; |
166b2571 | 3121 | } |
1fd5e000 CF |
3122 | |
3123 | int | |
01f58e41 | 3124 | semaphore::wait (sem_t *sem) |
1fd5e000 | 3125 | { |
09cbb9d6 TP |
3126 | pthread_testcancel (); |
3127 | ||
15648790 | 3128 | if (!is_good_object (sem)) |
062401c9 RC |
3129 | { |
3130 | set_errno (EINVAL); | |
3131 | return -1; | |
3132 | } | |
1fd5e000 | 3133 | |
15648790 | 3134 | (*sem)->_wait (); |
1fd5e000 | 3135 | return 0; |
166b2571 | 3136 | } |
1fd5e000 CF |
3137 | |
3138 | int | |
01f58e41 | 3139 | semaphore::trywait (sem_t *sem) |
1fd5e000 | 3140 | { |
15648790 | 3141 | if (!is_good_object (sem)) |
062401c9 RC |
3142 | { |
3143 | set_errno (EINVAL); | |
3144 | return -1; | |
3145 | } | |
1fd5e000 | 3146 | |
15648790 | 3147 | return (*sem)->_trywait (); |
166b2571 | 3148 | } |
1fd5e000 CF |
3149 | |
3150 | int | |
01f58e41 | 3151 | semaphore::post (sem_t *sem) |
1fd5e000 | 3152 | { |
15648790 | 3153 | if (!is_good_object (sem)) |
9a08b2c0 | 3154 | return EINVAL; |
1fd5e000 | 3155 | |
15648790 | 3156 | (*sem)->_post (); |
1fd5e000 | 3157 | return 0; |
166b2571 | 3158 | } |
1fd5e000 | 3159 | |
15648790 | 3160 | /* pthread_null */ |
4e786173 | 3161 | pthread * |
15648790 | 3162 | pthread_null::get_null_pthread () |
4e786173 RC |
3163 | { |
3164 | /* because of weird entry points */ | |
3165 | _instance.magic = 0; | |
3166 | return &_instance; | |
3167 | } | |
3168 | ||
15648790 | 3169 | pthread_null::pthread_null () |
4e786173 | 3170 | { |
f8c8e13b | 3171 | attr.joinable = PTHREAD_CREATE_DETACHED; |
4e786173 RC |
3172 | /* Mark ourselves as invalid */ |
3173 | magic = 0; | |
3174 | } | |
3175 | ||
15648790 | 3176 | pthread_null::~pthread_null () |
4e786173 RC |
3177 | { |
3178 | } | |
3179 | ||
3180 | void | |
15648790 | 3181 | pthread_null::create (void *(*)(void *), pthread_attr *, void *) |
4e786173 RC |
3182 | { |
3183 | } | |
3184 | ||
3185 | void | |
15648790 | 3186 | pthread_null::exit (void *value_ptr) |
4e786173 | 3187 | { |
f8c8e13b | 3188 | ExitThread (0); |
4e786173 RC |
3189 | } |
3190 | ||
3191 | int | |
15648790 | 3192 | pthread_null::cancel () |
4e786173 RC |
3193 | { |
3194 | return 0; | |
3195 | } | |
3196 | ||
3197 | void | |
15648790 | 3198 | pthread_null::testcancel () |
4e786173 RC |
3199 | { |
3200 | } | |
3201 | ||
3202 | int | |
15648790 | 3203 | pthread_null::setcancelstate (int state, int *oldstate) |
4e786173 RC |
3204 | { |
3205 | return EINVAL; | |
3206 | } | |
3207 | ||
3208 | int | |
15648790 | 3209 | pthread_null::setcanceltype (int type, int *oldtype) |
4e786173 RC |
3210 | { |
3211 | return EINVAL; | |
3212 | } | |
3213 | ||
3214 | void | |
15648790 | 3215 | pthread_null::push_cleanup_handler (__pthread_cleanup_handler *handler) |
4e786173 RC |
3216 | { |
3217 | } | |
3218 | ||
3219 | void | |
15648790 | 3220 | pthread_null::pop_cleanup_handler (int const execute) |
4e786173 RC |
3221 | { |
3222 | } | |
9a47ce7f | 3223 | |
4e786173 | 3224 | unsigned long |
15648790 | 3225 | pthread_null::getsequence_np () |
4e786173 RC |
3226 | { |
3227 | return 0; | |
3228 | } | |
3229 | ||
15648790 | 3230 | pthread_null pthread_null::_instance; |