testmsg.cpp

在Linux使用systemV测试消息

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <string.h>

int main()
{
	pid_t pid;

	printf("======== Test System V Message ==========\n");
	pid=fork();
	if(pid==0){
		char cExecName[64];

		strcpy(cExecName,"/mnt/svmsg/svmsg_s");
		execl(cExecName,"svmsg_s",NULL);
		exit(0);
	}
	else if(pid==-1){
		printf(".... 1# fork() Error ....\n");
		return -1;
	}

	pid=fork();
	if(pid==0){
		char cExecName[64];

		strcpy(cExecName,"/mnt/svmsg/svmsg_c");
		execl(cExecName,"svmsg_c",NULL);
		exit(0);
	}
	else if(pid==-1){
		printf(".... 2# fork() Error ....\n");
		return -1;
	}
	waitpid(-1,NULL,WNOHANG);
	return 0;
}