57 lines
1.4 KiB
PHP
57 lines
1.4 KiB
PHP
<?php
|
|
|
|
/*
|
|
* This file is part of the Symfony package.
|
|
*
|
|
* (c) Fabien Potencier <fabien@symfony.com>
|
|
*
|
|
* For the full copyright and license information, please view the LICENSE
|
|
* file that was distributed with this source code.
|
|
*/
|
|
|
|
namespace Symfony\Component\Console\SignalRegistry;
|
|
|
|
final class SignalRegistry
|
|
{
|
|
private array $signalHandlers = [];
|
|
|
|
public function __construct()
|
|
{
|
|
if (\function_exists('pcntl_async_signals')) {
|
|
pcntl_async_signals(true);
|
|
}
|
|
}
|
|
|
|
public function register(int $signal, callable $signalHandler): void
|
|
{
|
|
if (!isset($this->signalHandlers[$signal])) {
|
|
$previousCallback = pcntl_signal_get_handler($signal);
|
|
|
|
if (\is_callable($previousCallback)) {
|
|
$this->signalHandlers[$signal][] = $previousCallback;
|
|
}
|
|
}
|
|
|
|
$this->signalHandlers[$signal][] = $signalHandler;
|
|
|
|
pcntl_signal($signal, $this->handle(...));
|
|
}
|
|
|
|
public static function isSupported(): bool
|
|
{
|
|
return \function_exists('pcntl_signal');
|
|
}
|
|
|
|
/**
|
|
* @internal
|
|
*/
|
|
public function handle(int $signal): void
|
|
{
|
|
$count = \count($this->signalHandlers[$signal]);
|
|
|
|
foreach ($this->signalHandlers[$signal] as $i => $signalHandler) {
|
|
$hasNext = $i !== $count - 1;
|
|
$signalHandler($signal, $hasNext);
|
|
}
|
|
}
|
|
}
|