linux消息队列实现信息互递

struct msgbuf{
        long mtype;
        char mtext[128];
};
int main()
{
        struct msgbuf readbuf;
        int msgid = msgget(0x1235,IPC_CREAT|0777);//创建消息队列
        if(msgid == -1){
                printf("get que failuer\n");//如果返回值为-1，说明创建失败
        }
        msgrcv(msgid,&readbuf,sizeof(readbuf.mtext),888,0);//读取消息
        printf("read from que:%s\n",readbuf.mtext);//打印输出
        struct msgbuf sendbuf = {988,"thank you for reach"};//创建消息结构体
        msgsnd(msgid,&sendbuf,strlen(sendbuf.mtext),0);//添加消息，发送上面的sendbuf的内容
        return 0;
}

#include<stdio.h>
#include<sys/types.h>
#include<sys/ipc.h>
#include<string.h>
#include<sys/msg.h>
struct msgbuf{
        long mtype;
        char mtext[128];
};
int main()
{
        struct msgbuf sendbuf = {888,"this is message from quen"};
        struct msgbuf readbuf;
        int msgid = msgget(0x1235,IPC_CREAT|0777);//创建消息队列
        if (msgid == -1){
                printf("get que failuer\n");
        }
        msgsnd(msgid,&sendbuf,strlen(sendbuf.mtext),0);//添加消息
        printf("send over\n");
        msgrcv(msgid,&readbuf,sizeof(readbuf.mtext),988,0);//读取消息
        printf("reaturn from get %s\n",readbuf.mtext);//打印输出读取的消息
        return 0;
}
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