pipetest.c

关于IPC通信的小程序代码！

/////////////////////////////////////////////////////////////
//ModuleName:	semtest.c
//Author:	delaybbc
//WrittenTime:	2004/3/5
//Functions:	This module test use of sem in Linux/Unix IPC
//Reference:	
/////////////////////////////////////////////////////////////
////////////////////////////header///////////////////////////
#include "/home/delaybbc/inc/m_ipc.h"
#include "/home/delaybbc/inc/m_networks.h"
#include <stdio.h>
//////////////////////constant defination////////////////////
#define INPUT 0
#define OUTPUT 1

////////////////////////global variant///////////////////////

////////////////////////////body/////////////////////////////
main()
{	
	FILE *file_fd[2];
	char in[20],out[20];
	file_fd[INPUT]=fopen("a-pipe","r");
	file_fd[OUTPUT]=fopen("a-pipe","w");
	sprintf(out,"4342");
	fwrite(out,1,sizeof("4342")+1,file_fd[OUTPUT]);
	sleep(2);
	int ret=fread(in,1,20,file_fd[INPUT]);
	printf("%s,%d",in,ret);
	fclose(file_fd[0]);
	fclose(file_fd[1]);
	
		
}