| /* |
| * 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(); |
| } |
| } |