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