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// Copyright 2021-present StarRocks, Inc. All rights reserved.
//
// 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
//
//     https://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 com.staros.util;

import java.io.Closeable;
import java.util.concurrent.locks.Lock;

/**
 * A resource lock that makes it possible to acquire and release locks using the following idiom:
 *
 *  *   try (LockCloseable r = new LockCloseable(lock)) {
 *     ...
 *   }
 * 
 *
 */
public class LockCloseable implements Closeable {
    protected Lock mLock;

    /**
     * Creates a new instance of {@link LockCloseable} using the given lock.
     *
     * @param lock the lock to acquire
     */
    public LockCloseable(Lock lock) {
        mLock = lock;
        mLock.lock();
    }

    /**
     * Releases the lock.
     */
    @Override
    public void close() {
        mLock.unlock();
    }
}