/**
* 监控worker进程状态，退出重启
* @param resource $channel
* @param int $flag
* @param int $pid 退出的进程id
*/
public static function monitorWorkers($wait_pid = -1)
{
// 由于SIGCHLD信号可能重叠导致信号丢失，所以这里要循环获取所有退出的进程id
while (($pid = pcntl_waitpid($wait_pid, $status, WUNTRACED | WNOHANG)) != 0) {
// 如果是重启的进程，则继续重启进程
if (isset(self::$workerToRestart[$pid]) && self::$serverStatus != self::STATUS_SHUTDOWN) {
Telnet::sendToAllClient(".");
unset(self::$workerToRestart[$pid]);
self::restartWorkers();
}
// 出错
if ($pid == -1) {
// 没有子进程了,可能是出现Fatal Err 了
if (pcntl_get_last_error() == 10) {
self::notice('Server has no workers now');
}
return -1;
}
// 查找子进程对应的woker_name
$pid_workname_map = self::getPidWorkerNameMap();
$worker_name = isset($pid_workname_map[$pid]) ? $pid_workname_map[$pid] : '';
// 没找到worker_name说明出错了 哪里来的野孩子？
if (empty($worker_name)) {
self::notice("child exist but not found worker_name pid:{$pid}");
break;
}
// 进程退出状态不是0，说明有问题了
if ($status !== 0 && self::$serverStatus != self::STATUS_SHUTDOWN) {
self::notice("worker exit status {$status} pid:{$pid} worker:{$worker_name}");
}
// 记录进程退出状态
self::$serverStatusInfo['err_info'][$worker_name][$status] = isset(self::$serverStatusInfo['err_info'][$worker_name][$status]) ? self::$serverStatusInfo['err_info'][$worker_name][$status] + 1 : 1;
// 清理这个进程的数据
self::clearWorker($worker_name, $pid);
// 如果服务是不是关闭中
if (self::$serverStatus != self::STATUS_SHUTDOWN) {
// 重新创建worker
self::createWorkers();
// 开发环境需要上报监控文件给FileMonitor
if ($worker_name == 'FileMonitor') {
Reporter::reportIncludedFiles(self::$filesToInotify);
}
} else {
$all_worker_pid = self::getPidWorkerNameMap();
if (empty($all_worker_pid)) {
// 发送提示
self::notice("Server stoped");
// 关闭管理员socket
Telnet::close();
// 删除pid文件
@unlink(PID_FILE);
exit(0);
}
}
//end if
}
//end while
}
