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
/*******************************************************************************
 * 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.
/**
 * 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 – /**
		 * @throws IOException  
		 */
		@Override
		public boolean lock() throws IOException {
			// locking always successful
			return true;
		}

		@Override
		public boolean isLocked() {
			// this lock is never locked
			return false;
		}

		@Override
		public void release() {
			// nothing to release
		}

	}
}