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Java example source code file (SynchronizedRandomGenerator.java)

This example Java source code file (SynchronizedRandomGenerator.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

randomgenerator, synchronizedrandomgenerator

The SynchronizedRandomGenerator.java Java example source code

/*
 * 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.commons.math3.random;

/**
 * Any {@link RandomGenerator} implementation can be thread-safe if it
 * is used through an instance of this class.
 * This is achieved by enclosing calls to the methods of the actual
 * generator inside the overridden {@code synchronized} methods of this
 * class.
 *
 * @since 3.1
 */
public class SynchronizedRandomGenerator implements RandomGenerator {
    /** Object to which all calls will be delegated. */
    private final RandomGenerator wrapped;

    /**
     * Creates a synchronized wrapper for the given {@code RandomGenerator}
     * instance.
     *
     * @param rng Generator whose methods will be called through
     * their corresponding overridden synchronized version.
     * To ensure thread-safety, the wrapped generator <em>must
     * not be used directly.
     */
    public SynchronizedRandomGenerator(RandomGenerator rng) {
        wrapped = rng;
    }

    /**
     * {@inheritDoc}
     */
    public synchronized void setSeed(int seed) {
        wrapped.setSeed(seed);
    }

    /**
     * {@inheritDoc}
     */
    public synchronized void setSeed(int[] seed) {
        wrapped.setSeed(seed);
    }

    /**
     * {@inheritDoc}
     */
    public synchronized void setSeed(long seed) {
        wrapped.setSeed(seed);
    }

    /**
     * {@inheritDoc}
     */
    public synchronized void nextBytes(byte[] bytes) {
        wrapped.nextBytes(bytes);
    }

    /**
     * {@inheritDoc}
     */
    public synchronized int nextInt() {
        return wrapped.nextInt();
    }

    /**
     * {@inheritDoc}
     */
    public synchronized int nextInt(int n) {
        return wrapped.nextInt(n);
    }

    /**
     * {@inheritDoc}
     */
    public synchronized long nextLong() {
        return wrapped.nextLong();
    }

    /**
     * {@inheritDoc}
     */
    public synchronized boolean nextBoolean() {
        return wrapped.nextBoolean();
    }

    /**
     * {@inheritDoc}
     */
    public synchronized float nextFloat() {
        return wrapped.nextFloat();
    }

    /**
     * {@inheritDoc}
     */
    public synchronized double nextDouble() {
        return wrapped.nextDouble();
    }

    /**
     * {@inheritDoc}
     */
    public synchronized double nextGaussian() {
        return wrapped.nextGaussian();
    }
}

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