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File / Folder	Size	Action
.	-
Command.php	22.435KB	edt ren
CompleteCommand.php	9.052KB	edt ren
DumpCompletionCommand.php	5.313KB	edt ren
HelpCommand.php	2.482KB	edt ren
LazyCommand.php	5.956KB	edt ren
ListCommand.php	2.523KB	edt ren
LockableTrait.php	1.715KB	edt ren
SignalableCommandInterf...	0.842KB	edt ren
TraceableCommand.php	10.063KB	edt ren

<?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\Command;

use Symfony\Component\Console\Exception\LogicException;
use Symfony\Component\Lock\LockFactory;
use Symfony\Component\Lock\LockInterface;
use Symfony\Component\Lock\Store\FlockStore;
use Symfony\Component\Lock\Store\SemaphoreStore;

/**
 * Basic lock feature for commands.
 *
 * @author Geoffrey Brier <geoffrey.brier@gmail.com>
 */
trait LockableTrait
{
    private ?LockInterface $lock = null;

/**
     * Locks a command.
     */
    private function lock(?string $name = null, bool $blocking = false): bool
    {
        if (!class_exists(SemaphoreStore::class)) {
            throw new LogicException('To enable the locking feature you must install the symfony/lock component. Try running "composer require symfony/lock".');
        }

if (null !== $this->lock) {
            throw new LogicException('A lock is already in place.');
        }

if (SemaphoreStore::isSupported()) {
            $store = new SemaphoreStore();
        } else {
            $store = new FlockStore();
        }

$this->lock = (new LockFactory($store))->createLock($name ?: $this->getName());
        if (!$this->lock->acquire($blocking)) {
            $this->lock = null;

return false;
        }

return true;
    }

/**
     * Releases the command lock if there is one.
     */
    private function release(): void
    {
        if ($this->lock) {
            $this->lock->release();
            $this->lock = null;
        }
    }
}