Current File : /home2/selectio/www/fms-worksuite/vendor/amphp/amp/lib/Delayed.php
<?php
namespace Amp;
/**
* Creates a promise that resolves itself with a given value after a number of milliseconds.
*
* @template-covariant TReturn
* @template-implements Promise<TReturn>
*/
final class Delayed implements Promise
{
use Internal\Placeholder;
/** @var string|null Event loop watcher identifier. */
private $watcher;
/**
* @param int $time Milliseconds before succeeding the promise.
* @param TReturn $value Succeed the promise with this value.
*/
public function __construct(int $time, $value = null)
{
$this->watcher = Loop::delay($time, function () use ($value) {
$this->watcher = null;
$this->resolve($value);
});
}
/**
* References the internal watcher in the event loop, keeping the loop running while this promise is pending.
*
* @return self
*/
public function reference(): self
{
if ($this->watcher !== null) {
Loop::reference($this->watcher);
}
return $this;
}
/**
* Unreferences the internal watcher in the event loop, allowing the loop to stop while this promise is pending if
* no other events are pending in the loop.
*
* @return self
*/
public function unreference(): self
{
if ($this->watcher !== null) {
Loop::unreference($this->watcher);
}
return $this;
}
}
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