1 /* 2 * Copyright 2008-2010 Haiku Inc. 3 * Distributed under the terms of the MIT License. 4 */ 5 #ifndef _SEMAPHORE_H_ 6 #define _SEMAPHORE_H_ 7 8 9 #include <fcntl.h> 10 #include <stdint.h> 11 #include <sys/cdefs.h> 12 #include <time.h> 13 14 15 typedef struct _sem_t { 16 int32_t id; 17 int32_t _padding[3]; 18 } sem_t; 19 20 #define SEM_FAILED ((sem_t*)(long)-1) 21 22 __BEGIN_DECLS 23 24 sem_t* sem_open(const char* name, int openFlags,...); 25 int sem_close(sem_t* semaphore); 26 int sem_unlink(const char* name); 27 28 int sem_init(sem_t* semaphore, int shared, unsigned value); 29 int sem_destroy(sem_t* semaphore); 30 31 int sem_post(sem_t* semaphore); 32 int sem_timedwait(sem_t* semaphore, const struct timespec* timeout); 33 int sem_trywait(sem_t* semaphore); 34 int sem_wait(sem_t* semaphore); 35 int sem_getvalue(sem_t* semaphore, int* value); 36 37 __END_DECLS 38 39 40 #endif /* _SEMAPHORE_H_ */ 41