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<?php
/**
* Resource locking handling.
*
* 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
* @ingroup LockManager
*/
/**
* Simple version of LockManager that only does lock reference counting
* @since 1.19
*/
class NullLockManager extends LockManager {
protected function doLock( array $paths, $type ) {
foreach ( $paths as $path ) {
if ( isset( $this->locksHeld[$path][$type] ) ) {
++$this->locksHeld[$path][$type];
} else {
$this->locksHeld[$path][$type] = 1;
}
}
return StatusValue::newGood();
}
protected function doUnlock( array $paths, $type ) {
$status = StatusValue::newGood();
foreach ( $paths as $path ) {
if ( isset( $this->locksHeld[$path][$type] ) ) {
if ( --$this->locksHeld[$path][$type] <= 0 ) {
unset( $this->locksHeld[$path][$type] );
if ( !$this->locksHeld[$path] ) {
unset( $this->locksHeld[$path] ); // clean up
}
}
} else {
$status->warning( 'lockmanager-notlocked', $path );
}
}
return $status;
}
}
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