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 测试的代码主要功能：开启一个tcp服务器。然后设置了管理进程和工作进程start的回调进行更名。设置了pid_file保存了服务端启动的mast进程。

<?php
//创建Server对象，监听 127.0.0.1:9501端口
$serv = new swoole_server("127.0.0.1", 9501);
$serv->set(array('max_request ' => 10, //reactor thread num'worker_num' => 4,    //worker process num'log_file' => 'swoole.log','pid_file' => 'server.pid',
));$serv->on('managerStart',function($serv){swoole_set_process_name("managerprocess");
});$serv->on('workerStart',function($serv, $worker_id){if($worker_id >= $serv->setting['worker_num']) {swoole_set_process_name("workprocess_".($worker_id-$serv->setting['worker_num']));} else {swoole_set_process_name("workprocess_{$worker_id}");}
});
$serv->on('start',function($serv){echo "到这一步说明服务已经起来了，manager,work都已经回调start完成";
});
//监听连接进入事件
$serv->on('connect', function ($serv, $fd) {  echo "Client: Connect.\n";
});//监听数据接收事件
$serv->on('receive', function ($serv, $fd, $from_id, $data) {$serv->send($fd, "Server: ".$data);
});//监听连接关闭事件
$serv->on('close', function ($serv, $fd) {echo "Client: Close.\n";
});//启动服务器
$serv->start(); 

开启服务器后

查看进程，在server->start 后，拉起workNum+2(master,manager进程)。

然后查看pid_file里的master进程id是否是1827,上图所示。结果显然是一致的

 

下面写一个脚本去重启和停止服务端。（原理就是给mast进程发送信号）

<?php$options  = 's';$command = getopt($options);$pidFile = 'server.pid';if(isset($command['s'])){if($command['s']=='stop'){stop();}else{reload();}}else{die("请输入-s stop|reload");}function stop(){global $pidFile;if (file_exists($pidFile)) {$pid = file_get_contents($pidFile);if (!swoole_process::kill($pid, 0)) {echo "PID :{$pid} not exist \n";return false;}swoole_process::kill($pid);//等待5秒$time = time();$flag = false;while (true) {usleep(1000);if (!swoole_process::kill($pid, 0)) {echo "server stop at " . date("y-m-d h:i:s") . "\n";if (is_file($pidFile)) {unlink($pidFile);}$flag = true;break;} else {if (time() - $time > 5) {echo "stop server fail.try again \n";break;}}}return $flag;} else {echo "pid 文件不存在，请执行查找主进程pid,kill!\n";return false;}}function reload(){global $pidFile;if (file_exists($pidFile)) {$sig = SIGUSR1;$pid = file_get_contents($pidFile);if (!swoole_process::kill($pid, 0)) {echo "pid :{$pid} not exist \n";return;}swoole_process::kill($pid, $sig);echo "send server reload command at " . date("y-m-d h:i:s") . "\n";} else {echo "pid 文件不存在，请执行查找主进程pid,kill!\n";}}

先执行重启

再查看进程

主进程还是1827，但是工作进程就被reload的了。

然后执行退出

查看进程确实不见了