semaphore.h (2455B) - Raw
1 /* 2 Copyright (c) 2011-2016 mingw-w64 project 3 4 Permission is hereby granted, free of charge, to any person obtaining a 5 copy of this software and associated documentation files (the "Software"), 6 to deal in the Software without restriction, including without limitation 7 the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 and/or sell copies of the Software, and to permit persons to whom the 9 Software is furnished to do so, subject to the following conditions: 10 11 The above copyright notice and this permission notice shall be included in 12 all copies or substantial portions of the Software. 13 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 19 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 20 DEALINGS IN THE SOFTWARE. 21 */ 22 23 #ifndef WIN_PTHREADS_SEMAPHORE_H 24 #define WIN_PTHREADS_SEMAPHORE_H 25 26 #include <sys/timeb.h> 27 #include "pthread_compat.h" 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 #define SEM_VALUE_MAX INT_MAX 34 35 typedef void *sem_t; 36 37 #define SEM_FAILED NULL 38 39 WINPTHREAD_API int sem_init(sem_t * sem, int pshared, unsigned int value); 40 41 WINPTHREAD_API int sem_destroy(sem_t *sem); 42 43 WINPTHREAD_API int sem_trywait(sem_t *sem); 44 45 WINPTHREAD_API int sem_wait(sem_t *sem); 46 47 WINPTHREAD_API int sem_timedwait32(sem_t * sem, const struct _timespec32 *t); 48 WINPTHREAD_API int sem_timedwait64(sem_t * sem, const struct _timespec64 *t); 49 WINPTHREAD_SEM_DECL int sem_timedwait(sem_t * sem, const struct timespec *t) 50 { 51 #if WINPTHREADS_TIME_BITS == 32 52 return sem_timedwait32 (sem, (const struct _timespec32 *) t); 53 #else 54 return sem_timedwait64 (sem, (const struct _timespec64 *) t); 55 #endif 56 } 57 58 WINPTHREAD_API int sem_post(sem_t *sem); 59 60 WINPTHREAD_API int sem_post_multiple(sem_t *sem, int count); 61 62 /* yes, it returns a semaphore (or SEM_FAILED) */ 63 WINPTHREAD_API sem_t * sem_open(const char * name, int oflag, mode_t mode, unsigned int value); 64 65 WINPTHREAD_API int sem_close(sem_t * sem); 66 67 WINPTHREAD_API int sem_unlink(const char * name); 68 69 WINPTHREAD_API int sem_getvalue(sem_t * sem, int * sval); 70 71 #ifdef __cplusplus 72 } 73 #endif 74 75 #endif /* WIN_PTHREADS_SEMAPHORE_H */