# globalEvent ## 說明: ```php static Event Worker::$globalEvent ``` 此屬性為全局靜態屬性，為全局的eventloop實例，可以向其注冊文件描述符的讀寫事件或者信號事件。 ## 范例 ```php use Workerman\Worker; use Workerman\Events\EventInterface; require_once __DIR__ . '/Workerman/Autoloader.php'; $worker = new Worker(); $worker->onWorkerStart = function($worker) { echo 'Pid is ' . posix_getpid() . "\n"; // 當進程收到SIGALRM信號時，打印輸出一些信息 Worker::$globalEvent->add(SIGALRM, EventInterface::EV_SIGNAL, function() { echo "Get signal SIGALRM\n"; }); }; // 運行worker Worker::runAll(); ``` ## 測試 Workerman啟動后會輸出當前進程pid(一個數字)。命令行運行 ```php kill -SIGALRM 進程pid ``` 服務端會打印出 ```php Get signal SIGALRM ``` **備注** * swoole-worker使用swoole_process::signal方法設置異步信號監聽 ``` <?php swoole_process::signal(SIGTERM, function($signo) { echo "shutdown."; }); ```