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📄 AggregateException.php(380 B)
📄 CancellationException.php(183 B)
📄 Coroutine.php(4.24 KB)
📄 Create.php(2.06 KB)
📄 Each.php(2.82 KB)
📄 EachPromise.php(7.6 KB)
📄 FulfilledPromise.php(1.94 KB)
📄 Is.php(999 B)
📄 Promise.php(8.73 KB)
📄 PromiseInterface.php(2.79 KB)
📄 PromisorInterface.php(244 B)
📄 RejectedPromise.php(2.23 KB)
📄 RejectionException.php(1.19 KB)
📄 TaskQueue.php(1.89 KB)
📄 TaskQueueInterface.php(433 B)
📄 Utils.php(8.5 KB)
📄 functions.php(9.89 KB)
📄 functions_include.php(167 B)

Editing: 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;
    }
}

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Editing: TaskQueue.php

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