进程通信之消息队列

xiaoxiao2021-02-28  110

#include <sys/types.h> #include <sys/msg.h> #include <unistd.h> #include <stdio.h> #include <string.h> struct msg_buf { int mtype; char data[255]; }; int main() { key_t key; int msgid; int ret; struct msg_buf msgbuf; key = ftok("123456", 'a'); printf ("key = {%x}\n", key); // 创建或获取消息队列 msgid = msgget(key, IPC_CREAT |0666);  if (msgid == -1) { printf ("create error!\n"); return -1; } // 设置消息类型 msgbuf.mtype = 2; // 填写消息 strcpy(msgbuf.data, "test data"); // 发送消息 ret = msgsnd(msgid, &msgbuf, sizeof(msgbuf.data), IPC_NOWAIT); if (ret == -1) { printf ("send message err\n"); return -1; } return 0; }
转载请注明原文地址: https://www.6miu.com/read-29832.html

最新回复(0)