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/* Linuxthreads - a simple clone()-based implementation of Posix */
/* threads for Linux. */
/* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr) */
/* */
/* This program is free software; you can redistribute it and/or */
/* modify it under the terms of the GNU Library General Public License */
/* as published by the Free Software Foundation; either version 2 */
/* of the License, or (at your option) any later version. */
/* */
/* This program is distributed in the hope that it will be useful, */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
/* GNU Library General Public License for more details. */
#ifndef _SEMAPHORE_H
#define _SEMAPHORE_H 1
#include <features.h>
#include <limits.h>
#define SEM_VALUE_MAX INT_MAX
typedef struct {
struct { long status; int spinlock; } sem_lock;
int sem_value;
_pthread_descr sem_waiting;
} sem_t;
__BEGIN_DECLS
extern int sem_init __P((sem_t *__sem, int __pshared, unsigned int __value));
extern int sem_destroy __P((sem_t *__sem));
extern int sem_wait __P((sem_t *__sem));
extern int sem_trywait __P((sem_t *__sem));
extern int sem_post __P((sem_t *__sem));
extern int sem_getvalue __P((sem_t *__sem, int *__sval));
__END_DECLS
#endif /* semaphore.h */
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