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www.887551.com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