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Revision Autor Zeilennr. Zeile
148 lars 1 
<?php declare(strict_types=1);
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/*
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 * This file is part of phpunit/php-invoker.
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 *
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 * (c) Sebastian Bergmann <sebastian@phpunit.de>
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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 SebastianBergmann\Invoker;
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use const SIGALRM;
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use function call_user_func_array;
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use function function_exists;
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use function pcntl_alarm;
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use function pcntl_async_signals;
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use function pcntl_signal;
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use function sprintf;
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use Throwable;
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final class Invoker
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{
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    /**
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     * @var int
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     */
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    private $timeout;
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    /**
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     * @throws Throwable
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     */
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    public function invoke(callable $callable, array $arguments, int $timeout)
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    {
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        if (!$this->canInvokeWithTimeout()) {
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            throw new ProcessControlExtensionNotLoadedException(
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                'The pcntl (process control) extension for PHP is required'
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            );
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        }
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        pcntl_signal(
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            SIGALRM,
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            function (): void {
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                throw new TimeoutException(
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                    sprintf(
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                        'Execution aborted after %d second%s',
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                        $this->timeout,
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                        $this->timeout === 1 ? '' : 's'
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                    )
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                );
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            },
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            true
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        );
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        $this->timeout = $timeout;
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        pcntl_async_signals(true);
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        pcntl_alarm($timeout);
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        try {
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            return call_user_func_array($callable, $arguments);
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        } finally {
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            pcntl_alarm(0);
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        }
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    }
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    public function canInvokeWithTimeout(): bool
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    {
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        return function_exists('pcntl_signal') && function_exists('pcntl_async_signals') && function_exists('pcntl_alarm');
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    }
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}