- Move constants to the "Cache" class (more transparent than inside the interface)

src/Core/Lock/Lock.php

@@ -0,0 +1,68 @@
+<?php
+
+namespace Friendica\Core\Lock;
+
+/**
+ * Class AbstractLock
+ *
+ * @package Friendica\Core\Lock
+ *
+ * Basic class for Locking with common functions (local acquired locks, releaseAll, ..)
+ */
+abstract class Lock implements ILock
+{
+	/**
+	 * @var array The local acquired locks
+	 */
+	protected $acquiredLocks = [];
+
+	/**
+	 * Check if we've locally acquired a lock
+	 *
+	 * @param string key The Name of the lock
+	 *
+	 * @return bool      Returns true if the lock is set
+	 */
+	protected function hasAcquiredLock($key)
+	{
+		return isset($this->acquireLock[$key]) && $this->acquiredLocks[$key] === true;
+	}
+
+	/**
+	 * Mark a locally acquired lock
+	 *
+	 * @param string $key The Name of the lock
+	 */
+	protected function markAcquire($key)
+	{
+		$this->acquiredLocks[$key] = true;
+	}
+
+	/**
+	 * Mark a release of a locally acquired lock
+	 *
+	 * @param string $key The Name of the lock
+	 */
+	protected function markRelease($key)
+	{
+		unset($this->acquiredLocks[$key]);
+	}
+
+	/**
+	 * Releases all lock that were set by us
+	 *
+	 * @return boolean Was the unlock of all locks successful?
+	 */
+	public function releaseAll()
+	{
+		$return = true;
+
+		foreach ($this->acquiredLocks as $acquiredLock => $hasLock) {
+			if (!$this->releaseLock($acquiredLock)) {
+				$return = false;
+			}
+		}
+
+		return $return;
+	}
+}