# globalEvent ## 说明: ```php static Event Worker::$globalEvent ``` 此属性为全局静态属性，为全局的eventloop实例，可以向其注册文件描述符的读写事件或者信号事件。 ## 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"; // 当进程收到SIGALRM信号时，打印输出一些信息 Worker::$globalEvent->add(SIGALRM, EventInterface::EV_SIGNAL, function() { echo "Get signal SIGALRM\n"; }); }; // 运行worker Worker::runAll(); ``` ## 测试 Workerman启动后会输出当前进程pid(一个数字)。命令行运行 ```php kill -SIGALRM 进程pid ``` 服务端会打印出 ```php Get signal SIGALRM ``` **备注** * swoole-worker使用swoole_process::signal方法设置异步信号监听 ``` <?php swoole_process::signal(SIGTERM, function($signo) { echo "shutdown."; }); ```