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The Apache Commons Codec package contains simple encoder and decoders for various formats such as Base64 and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities.

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/*   Copyright 2004 The Apache Software Foundation
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.apache.xmlbeans.impl.common;

/**
 * Whenever multiple locks must be acquired within the implementation of
 * XML Beans, this GlobalLock is acquired first, and then released when all
 * the acutally-needed locks have been acquired.  This prevents deadlocks.
 */ 
public class GlobalLock
{
    private static final Mutex GLOBAL_MUTEX = new Mutex();
    
    public static void acquire() throws InterruptedException { GLOBAL_MUTEX.acquire(); }
    public static void tryToAcquire() { GLOBAL_MUTEX.tryToAcquire(); }
    public static void release() { GLOBAL_MUTEX.release(); }
}