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event.c
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event.c
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/********************************************************************/
/* Copyright (C) SSE-USTC, 2010 */
/* */
/* FILE NAME : event.c */
/* PRINCIPAL AUTHOR : SLK */
/* SUBSYSTEM NAME : DB */
/* MODULE NAME : event */
/* LANGUAGE : C */
/* TARGET ENVIRONMENT : ANY */
/* DATE OF FIRST RELEASE : 2012/12/21 */
/* DESCRIPTION : interface of Event */
/********************************************************************/
/*
* Revision log:
*
* Created by SLK,2012/12/21
*
*/
#include "event.h"
#include <stdio.h>
#define SUCCESS 0
#define FAILURE (-1)
/*
* Initialize an Event
* input : tEvent *pEvent, Memory allocate outside
* input : Value (0)
* return : SUCCESS(0)/FAILURE(-1)
*
*/
int EventInit(tEvent *pEvent, int Value)
{
if(sem_init(pEvent, 0, Value) != SUCCESS)
{
printf("sem_init failure!\n");
return FAILURE;
}
return SUCCESS;
}
/*
* Shutdown an Event
* input : ...
*
*/
int EventShut(tEvent *pEvent)
{
sem_destroy(pEvent);
return SUCCESS;
}
/*
* ....
*
*/
int SentEvent(tEvent *pEvent)
{
return sem_post(pEvent);
}
/*
* ...
* return : SUCCESS(0)/FAILURE(-1)
*
*/
int WaitEvent(tEvent *pEvent)
{
return sem_wait(pEvent);
}