<?php
/**
 * Provides of semaphore semantics for restricting the number
 * of workers that may be concurrently performing the same task.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 */

/**
 * A default PoolCounter, which provides no locking.
 */
class PoolCounterNull extends PoolCounter {

	public function __construct() {
		/* No parameters needed */
	}

	public function acquireForMe( $timeout = null ) {
		return Status::newGood( PoolCounter::LOCKED );
	}

	public function acquireForAnyone( $timeout = null ) {
		return Status::newGood( PoolCounter::LOCKED );
	}

	public function release() {
		return Status::newGood( PoolCounter::RELEASED );
	}
}
