Augustin Cavalier
d763a3829a
It's specified in POSIX, and FreeBSD puts it in this file. Distinguish it from _POSIX_SEM_VALUE_MAX (which is really a "minimum value this can have" as specified in POSIX.)
48 lines
1016 B
C
48 lines
1016 B
C
/*
|
|
* Copyright 2008-2015 Haiku, Inc.
|
|
* Distributed under the terms of the MIT License.
|
|
*/
|
|
#ifndef _SEMAPHORE_H_
|
|
#define _SEMAPHORE_H_
|
|
|
|
|
|
#include <fcntl.h>
|
|
#include <stdint.h>
|
|
#include <sys/cdefs.h>
|
|
#include <time.h>
|
|
|
|
|
|
typedef struct _sem_t {
|
|
int32_t type;
|
|
union {
|
|
int32_t named_sem_id;
|
|
int32_t unnamed_sem;
|
|
} u;
|
|
int32_t padding[2];
|
|
} sem_t;
|
|
|
|
#define SEM_FAILED ((sem_t*)(long)-1)
|
|
#define SEM_VALUE_MAX INT_MAX
|
|
|
|
__BEGIN_DECLS
|
|
|
|
sem_t* sem_open(const char* name, int openFlags,...);
|
|
int sem_close(sem_t* semaphore);
|
|
int sem_unlink(const char* name);
|
|
|
|
int sem_init(sem_t* semaphore, int shared, unsigned value);
|
|
int sem_destroy(sem_t* semaphore);
|
|
|
|
int sem_post(sem_t* semaphore);
|
|
int sem_clockwait(sem_t* semaphore, clockid_t clock_id,
|
|
const struct timespec* abstime);
|
|
int sem_timedwait(sem_t* semaphore, const struct timespec* abstime);
|
|
int sem_trywait(sem_t* semaphore);
|
|
int sem_wait(sem_t* semaphore);
|
|
int sem_getvalue(sem_t* semaphore, int* value);
|
|
|
|
__END_DECLS
|
|
|
|
|
|
#endif /* _SEMAPHORE_H_ */
|