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Direktori : /home2/selectio/public_html/3-idiots/vendor/guzzlehttp/promises/src/ |
Current File : //home2/selectio/public_html/3-idiots/vendor/guzzlehttp/promises/src/TaskQueue.php |
<?php namespace GuzzleHttp\Promise; /** * A task queue that executes tasks in a FIFO order. * * This task queue class is used to settle promises asynchronously and * maintains a constant stack size. You can use the task queue asynchronously * by calling the `run()` function of the global task queue in an event loop. * * GuzzleHttp\Promise\Utils::queue()->run(); */ class TaskQueue implements TaskQueueInterface { private $enableShutdown = true; private $queue = []; public function __construct($withShutdown = true) { if ($withShutdown) { register_shutdown_function(function () { if ($this->enableShutdown) { // Only run the tasks if an E_ERROR didn't occur. $err = error_get_last(); if (!$err || ($err['type'] ^ E_ERROR)) { $this->run(); } } }); } } public function isEmpty() { return !$this->queue; } public function add(callable $task) { $this->queue[] = $task; } public function run() { while ($task = array_shift($this->queue)) { /** @var callable $task */ $task(); } } /** * The task queue will be run and exhausted by default when the process * exits IFF the exit is not the result of a PHP E_ERROR error. * * You can disable running the automatic shutdown of the queue by calling * this function. If you disable the task queue shutdown process, then you * MUST either run the task queue (as a result of running your event loop * or manually using the run() method) or wait on each outstanding promise. * * Note: This shutdown will occur before any destructors are triggered. */ public function disableShutdown() { $this->enableShutdown = false; } }