msg_server.c

这是一个linux下ipc通讯的服务端。主要体现linux下的消息队列。

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

struct my_message
{
 	long int message_type;
	char text[1024]; 
};

int main(int argc,char **argv)
{
 	int msgid;
	long int rev=0;
	ssize_t rcv;
	char buffer[1024];
	int running=1;
	struct my_message msg;
    
	memset(buffer,0,sizeof(buffer));
	msgid=msgget((key_t)1234,IPC_CREAT|0666);
	if(-1 == msgid)
	{
		printf("msgget is error\n");
		exit(0);
	}
	while(running)
	{
	    printf(" waiting for client write:\n");
		rcv=msgrcv(msgid,(void *)&msg,sizeof(msg),rev,0);
		if(rcv == -1)
		{
			printf("msgrcv is faulire\n");
			exit(0);
		}
		//printf("rcv=%d\n",rcv);
		printf("rev : %s\n",msg.text);
		if((strncmp(msg.text,"end",3))==0)
		{
			running=0;
		}
	
    }
	msgctl(msgid,IPC_RMID,0);
	return 0;

}