/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 threaddemo.locking;

/** Action to be executed in a lock without throwing any checked exceptions.
 * Unchecked exceptions will be propagated to calling code.
 *
 */
public interface LockAction<T> {

    /**
     * Execute the action.
     * @return any object, then returned from {@link Lock#read(LockAction)} or {@link Lock#write(LockAction)}
     */
    public T run();

}

