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<?php declare(strict_types=1);
/*
* This file is part of phpunit/php-invoker.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Invoker;
use const SIGALRM;
use function call_user_func_array;
use function function_exists;
use function pcntl_alarm;
use function pcntl_async_signals;
use function pcntl_signal;
use function sprintf;
use Throwable;
final class Invoker
{
/**
* @var int
*/
private $timeout;
/**
* @throws Throwable
*/
public function invoke(callable $callable, array $arguments, int $timeout)
{
if (!$this->canInvokeWithTimeout()) {
throw new ProcessControlExtensionNotLoadedException(
'The pcntl (process control) extension for PHP is required'
);
}
pcntl_signal(
SIGALRM,
function (): void {
throw new TimeoutException(
sprintf(
'Execution aborted after %d second%s',
$this->timeout,
$this->timeout === 1 ? '' : 's'
)
);
},
true
);
$this->timeout = $timeout;
pcntl_async_signals(true);
pcntl_alarm($timeout);
try {
return call_user_func_array($callable, $arguments);
} finally {
pcntl_alarm(0);
}
}
public function canInvokeWithTimeout(): bool
{
return function_exists('pcntl_signal') && function_exists('pcntl_async_signals') && function_exists('pcntl_alarm');
}
}