service.c

来自「scounix编译通过,c/s完整实现」· C语言 代码 · 共 30 行

/*./service.c
*为请求进程服务的服务方进程
*/
#include <errno.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>

#define MSGKEY 3756

main()
{
	struct msgbuf{
		int mtype;
		int mtext;
	}buf;
	int msqid, tmp;

	msqid = msgget(MSGKEY, IPC_CREAT|0666);
	for(;;){
		/*接受请求*/
		msgrcv(msqid, &buf, 256, 1, MSG_NOERROR);
		tmp = buf.mtext;
		printf("server receive a request from process %d\n", tmp);
		buf.mtype = tmp ;
		/*向请求进程发送应答消息*/
		msgsnd(msqid, &buf, 1, 0);
	}
}