Linux的僵尸进程处理2

最新推荐文章于 2025-07-21 00:07:19 发布

原创最新推荐文章于 2025-07-21 00:07:19 发布 · 248 阅读

0 ·

CC 4.0 BY-SA版权

C/C++编程开发专栏收录该内容

25 篇文章

订阅专栏

本文提供了一个Linux环境下僵尸进程处理的示例代码，并展示了如何通过管道通信实现父子进程间的信息传递及僵尸进程回收。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

linux下的僵尸进程处理例子，同时也演示了管道通信的弊端

/*************************************************************************
        > File Name: ft.c
        > Author: zhoulin
        > Mail: 715169549@qq.com
        > Created Time: Fri Mar 25 15:21:00 2016
 ************************************************************************/

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
void deal(int sig){
    fprintf(stdout,"        *******cur %d exit*******\n",getpid()); //Ctrl+C的发送信号的处理（SIGINT信号)
    exit(1);
}
int main(void)
{
    pid_t f;
    int fd[2]; //管道通信，ffd[0]用于读，fd[1]用于写
    if(pipe(fd) <0){
        perror("pipe");
        return -1;
    }
    f= fork();
    if(f < 0){
        perror("fork");
        return -1;
    }
    if(f > 0){
        char buf[32] = {'\0'};
        signal(SIGINT,&deal); //信号注册
        while(1)
        {
            memset(buf,'\0',32);
            fprintf(stdout,"        ******parent %d********\n",getpid());
            system("ps -ef |grep -v 'grep'|grep -v 'ksoftirqd'|grep 'ft'");
            sleep(1);
            close(fd[1]);
            if(read(fd[0],buf,32) < 0) //接受子进程过来的信息
            {
                perror("read");
                return -1;
            }
            if(strlen(buf) > 0){
                fprintf(stdout,"    ----------------%s-------------\n",buf);
                if(strncmp(buf,"active",6) == 0){
                    fprintf(stdout,"        *****child is running*****\n");
                }
                if(strncmp(buf+6,"die",3) == 0) {
                    fprintf(stdout,"        *****child is die*****\n");
                    system("ps -ef |grep -v 'grep'|grep -v 'ksoftirqd'|grep 'ft'");
                    int status;
                    fprintf(stdout,"    ****recyle child %d******\n",wait(&status));
                }
            }
        }
    }else {
        int i = 0;
        while(1){
            close(fd[0]);
            fprintf(stdout,"        ******child %d********\n",getpid());
            system("ps -ef |grep -v 'grep'|grep -v 'ksoftirqd'|grep 'ft'");
            sleep(1);
            i++;
            if(i == 3){
                fprintf(stdout,"        #####child exit#####\n");
                write(fd[1],"die",3); //发送消息给父进程，要推出啦
                exit(0);
            }
            if(write(fd[1],"active",6) < 0){
                perror("write");
                return -1;
            }
        }
    }
    return 0;
}

运行结果: