3 * Resource locking handling.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 * http://www.gnu.org/copyleft/gpl.html
21 * @ingroup LockManager
25 * Simple version of LockManager that only does lock reference counting
28 class NullLockManager
extends LockManager
{
29 protected function doLock( array $paths, $type ) {
30 foreach ( $paths as $path ) {
31 if ( isset( $this->locksHeld
[$path][$type] ) ) {
32 ++
$this->locksHeld
[$path][$type];
34 $this->locksHeld
[$path][$type] = 1;
38 return StatusValue
::newGood();
41 protected function doUnlock( array $paths, $type ) {
42 $status = StatusValue
::newGood();
44 foreach ( $paths as $path ) {
45 if ( isset( $this->locksHeld
[$path][$type] ) ) {
46 if ( --$this->locksHeld
[$path][$type] <= 0 ) {
47 unset( $this->locksHeld
[$path][$type] );
48 if ( !$this->locksHeld
[$path] ) {
49 unset( $this->locksHeld
[$path] ); // clean up
53 $status->warning( 'lockmanager-notlocked', $path );