sem.h

MANTIS是由科罗拉多大学开发的传感器网络嵌入式操作系统。 这是mantis的0.9.5版本的源码。

//  This file is part of MANTIS OS, Operating System
//  See http://mantis.cs.colorado.edu/
//
//  Copyright (C) 2003,2004,2005 University of Colorado, Boulder
//
//  This program is free software; you can redistribute it and/or
//  modify it under the terms of the mos license (see file LICENSE)

/*
  Project Mantis
  File: sem.h
  Author: Brian Shucker
  Date: 2-5-03
  Edited by: Jeff Rose (1/25/04) // Using inlines instead of macros.
  
  Standard counting semaphores...
*/
#ifndef SEM_H_
#define SEM_H_

#include <inttypes.h>
#include <semaphore.h>

/** @brief Succeeded in decrementing semaphore */
#define SEM_SUCCESS 0
/** @brief Failed in decrementing semaphore */
#define SEM_FAIL 1

typedef  sem_t mos_sem_t;

void mos_sem_init(mos_sem_t *s, int8_t value);
uint8_t mos_sem_try_wait(mos_sem_t *s); 
void mos_sem_wait(mos_sem_t *s);
void mos_sem_post(mos_sem_t *s);

#endif