org.apache.hadoop.util.InstrumentedReadWriteLock Maven / Gradle / Ivy
/**
* 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 org.apache.hadoop.util;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.slf4j.Logger;
/**
* This is a wrap class of a {@link ReentrantReadWriteLock}.
* It implements the interface {@link ReadWriteLock}, and can be used to
* create instrumented ReadLock and WriteLock.
*/
@InterfaceAudience.Private
@InterfaceStability.Unstable
public class InstrumentedReadWriteLock implements ReadWriteLock {
private final Lock readLock;
private final Lock writeLock;
public InstrumentedReadWriteLock(boolean fair, String name, Logger logger,
long minLoggingGapMs, long lockWarningThresholdMs) {
ReentrantReadWriteLock readWriteLock = new ReentrantReadWriteLock(fair);
readLock = new InstrumentedReadLock(name, logger, readWriteLock,
minLoggingGapMs, lockWarningThresholdMs);
writeLock = new InstrumentedWriteLock(name, logger, readWriteLock,
minLoggingGapMs, lockWarningThresholdMs);
}
@Override
public Lock readLock() {
return readLock;
}
@Override
public Lock writeLock() {
return writeLock;
}
}