| /******************************************************************************* |
| * Copyright (c) 2004, 2013 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.osgi.internal.location; |
| |
| import java.io.IOException; |
| |
| /** |
| * Internal class. |
| */ |
| public interface Locker { |
| public boolean lock() throws IOException; |
| |
| public boolean isLocked() throws IOException; |
| |
| public void release(); |
| |
| static class MockLocker implements Locker { |
| /** |
| * @throws IOException |
| */ |
| public boolean lock() throws IOException { |
| // locking always successful |
| return true; |
| } |
| |
| public boolean isLocked() { |
| // this lock is never locked |
| return false; |
| } |
| |
| public void release() { |
| // nothing to release |
| } |
| |
| } |
| } |