php实现 master-worker 守护多进程模式的实例代码


						具体代码如下所示：





<?php

class Worker{

  public static $count = 2;

  public static function runAll(){

    static::runMaster();

    static::moniProcess();

  }

  //开启主进程

  public static function runMaster(){

    //确保进程有最大操作权限

    unmask(0);

    $pid = pcntl_fork();

    if($pid > 0){

      echo "主进程进程 $pid \n";

      exit;  

    }else if($pid == 0){

      if(-1 === posix_setsid()){

          throw new Exception("setsid fail");

      }

      for ($i=0; $i < self::$count; $i++) {

        static::runWorker();

      }

      @cli_set_process_title("master_process");

    }else{

      throw new Exception("创建主进程失败");

    }

  } 

  //开启子进程

  public static function runWorker(){

    unmask(0);

    $pid = pcntl_fork();

    if($pid > 0){

      // echo "创建子进程 $pid \n";

    }else if($pid == 0){

      if(-1 === posix_setsid()){

        throw new Exception("setsid fail");

      }

      @cli_set_process_title("worker_process");

      while(1){

        sleep(1);

      }

    }else{

      throw new Exception("创建子进程失败");

    }

  }

  //监控worker进程

  public function moniProcess(){

    while( $pid = pcntl_wait($status)){

      if($pid == -1){

        break;

      }else{

        static::runWorker();

      }

    }

  }

}

Worker::runAll();







ps -aux

USER    PID %CPU %MEM  VSZ  RSS TTY   STAT START  TIME COMMAND

root     1 0.0 0.0 18200 3076 pts/0  Ss+ 14:05  0:00 bash

root     6 0.0 0.0 18208 3252 pts/1  Ss  14:06  0:00 bash

root    19 0.0 0.0 18204 3248 pts/2  Ss+ 14:11  0:00 bash

root    64 0.0 0.2 348488 8320 ?    Ss  15:32  0:00 master_process

root    65 0.0 0.2 348488 8400 ?    Ss  15:32  0:00 worker_process

root    66 0.0 0.2 348488 8400 ?    Ss  15:32  0:00 worker_process

root    67 0.0 0.0 36640 2804 pts/1  R+  15:32  0:00 ps -aux



执行命令 kill 65，杀死进程 65 则master_process 进程会再自动开启一个子进程





USER    PID %CPU %MEM  VSZ  RSS TTY   STAT START  TIME COMMAND

root     1 0.0 0.0 18200 3076 pts/0  Ss+ 14:05  0:00 bash

root     6 0.0 0.0 18208 3252 pts/1  Ss  14:06  0:00 bash

root    19 0.0 0.0 18204 3248 pts/2  Ss+ 14:11  0:00 bash

root    64 0.0 0.2 348488 8320 ?    Ss  15:32  0:00 master_process

root    66 0.0 0.2 348488 8400 ?    Ss  15:32  0:00 worker_process

root    68 0.0 0.1 348488 5796 ?    Ss  15:34  0:00 worker_process

root    69 0.0 0.0 36640 2728 pts/1  R+  15:34  0:00 ps -aux



总结

以上所述是小编给大家介绍的php实现 master-worker 守护多进程模式的实例代码,希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对中文源码网网站的支持！

如果你觉得本文对你有帮助，欢迎转载，烦请注明出处，谢谢！