58 lines
1.2 KiB
PHP
58 lines
1.2 KiB
PHP
<?php
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namespace React\EventLoop\Tick;
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use React\EventLoop\LoopInterface;
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use SplQueue;
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class NextTickQueue
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{
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private $eventLoop;
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private $queue;
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/**
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* @param LoopInterface $eventLoop The event loop passed as the first parameter to callbacks.
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*/
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public function __construct(LoopInterface $eventLoop)
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{
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$this->eventLoop = $eventLoop;
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$this->queue = new SplQueue();
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}
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/**
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* Add a callback to be invoked on the next tick of the event loop.
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*
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* Callbacks are guaranteed to be executed in the order they are enqueued,
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* before any timer or stream events.
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*
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* @param callable $listener The callback to invoke.
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*/
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public function add(callable $listener)
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{
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$this->queue->enqueue($listener);
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}
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/**
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* Flush the callback queue.
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*/
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public function tick()
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{
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while (!$this->queue->isEmpty()) {
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call_user_func(
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$this->queue->dequeue(),
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$this->eventLoop
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);
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}
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}
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/**
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* Check if the next tick queue is empty.
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*
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* @return boolean
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*/
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public function isEmpty()
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{
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return $this->queue->isEmpty();
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}
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}
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