semaphore.h
#ifndef _SEMAPHORE_H
#define _SEMAPHORE_H 1
#include
#include
#ifdef __USE_XOPEN2K
# define __need_timespec
# include
#endif
#ifndef _PTHREAD_DESCR_DEFINED
typedef struct _pthread_descr_struct *_pthread_descr;
# define _PTHREAD_DESCR_DEFINED
#endif
typedef struct
{
struct _pthread_fastlock __sem_lock;
int __sem_value;
_pthread_descr __sem_waiting;
} sem_t;
#define SEM_FAILED ((sem_t *) 0)
#define SEM_VALUE_MAX (2147483647)
__BEGIN_DECLS
extern int sem_init (sem_t *__sem, int __pshared, unsigned int __value) __THROW;
extern int sem_destroy (sem_t *__sem) __THROW;
extern sem_t *sem_open (__const char *__name, int __oflag, ...) __THROW;
extern int sem_close (sem_t *__sem) __THROW;
extern int sem_unlink (__const char *__name) __THROW;
extern int sem_wait (sem_t *__sem);
#ifdef __USE_XOPEN2K
extern int sem_timedwait (sem_t *__restrict __sem,
__const struct timespec *__restrict __abstime);
#endif
extern int sem_trywait (sem_t *__sem) __THROW;
extern int sem_post (sem_t *__sem) __THROW;
extern int sem_getvalue (sem_t *__restrict __sem, int *__restrict __sval)
__THROW;
__END_DECLS
#endif
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