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/*
* RT-Linux semaphore implementation
*
* Written by Michael Barabanov <baraban@fsmlabs.com>
* Copyright (C) Finite State Machine Labs Inc. ,2000
* Released under the terms of the GPL Version 2
*
*/
#ifndef __RTL_SEMA_H__
#define __RTL_SEMA_H__
#include <rtl_conf.h>
#include <rtl_mutex.h>
#include <errno.h>
struct rtl_sem_struct
{
int value;
spinlock_t lock;
rtl_wait_t wait;
};
typedef struct rtl_sem_struct sem_t;
extern int sem_init(sem_t *sem, int pshared, unsigned int value);
extern int sem_destroy(sem_t *sem);
extern int sem_getvalue(sem_t *sem, int *sval);
extern int sem_wait(sem_t *sem);
extern int sem_trywait(sem_t *sem);
extern int sem_post(sem_t *sem);
#ifdef _RTL_POSIX_TIMEOUTS
extern int sem_timedwait(sem_t *sem, const struct timespec *abs_timeout);
#endif
#endif
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