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#ifndef _SEMAPHORE_H
#define _SEMAPHORE_H
#ifdef __cplusplus
extern "C" {
#endif
#define SEM_FAILED ((sem_t *)0)
typedef struct {
long __val[4];
} sem_t;
int sem_close(sem_t *);
int sem_destroy(sem_t *);
int sem_getvalue(sem_t *, int *);
int sem_init(sem_t *, int, unsigned);
sem_t *sem_open(const char *, int, ...);
int sem_post(sem_t *);
int sem_timedwait(sem_t *, const struct timespec *);
int sem_trywait(sem_t *);
int sem_unlink(const char *);
int sem_wait(sem_t *);
#ifdef __cplusplus
}
#endif
#endif
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