org.nd4j.common.primitives.SynchronizedObject Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2015-2018 Skymind, Inc.
*
* This program and the accompanying materials are made available under the
* terms of the Apache License, Version 2.0 which is available 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.
*
* SPDX-License-Identifier: Apache-2.0
******************************************************************************/
package org.nd4j.common.primitives;
import java.io.Serializable;
import java.util.concurrent.locks.ReentrantReadWriteLock;
/**
* This class is simple holder for provided variable which can be accessed & updated in thread-safe way
*
* @author [email protected]
*/
public class SynchronizedObject implements Serializable {
protected T value;
protected transient ReentrantReadWriteLock lock;
public SynchronizedObject() {
lock = new ReentrantReadWriteLock();
}
public SynchronizedObject(T value) {
this();
this.set(value);
}
/**
* This method returns stored value via read lock
* @return
*/
public final T get() {
try {
lock.readLock().lock();
return value;
} finally {
lock.readLock().unlock();
}
}
/**
* This method updates stored value via write lock
* @param value
*/
public final void set(T value) {
try {
lock.writeLock().lock();
this.value = value;
} finally {
lock.writeLock().unlock();
}
}
}