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/*
* 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</em> 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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