[LockManager] Added ScopedLock::release function.

* Added more lock unit tests.

Change-Id: Ic359307cf26cfb621ae8d2db867801735a375dde

1 files changed, 13 insertions, 0 deletions

diff --git a/includes/filebackend/lockmanager/ScopedLock.php b/includes/filebackend/lockmanager/ScopedLock.php
index 5a80bee8b329..790a5c64a729 100644
--- a/includes/filebackend/lockmanager/ScopedLock.php
+++ b/includes/filebackend/lockmanager/ScopedLock.php
@@ -78,6 +78,19 @@ class ScopedLock {
 		return null;
 	}
 
+	/**
+	 * Release a scoped lock and set any errors in the attatched Status object.
+	 * This is useful for early release of locks before function scope is destroyed.
+	 * This is the same as setting the lock object to null.
+	 *
+	 * @param ScopedLock $lock
+	 * @return void
+	 * @since 1.21
+	 */
+	public static function release( ScopedLock &$lock = null ) {
+		$lock = null;
+	}
+
 	function __destruct() {
 		$wasOk = $this->status->isOK();
 		$this->status->merge( $this->manager->unlock( $this->paths, $this->type ) );