benchmarks/regression/RandomBenchmark.java

/*
 * Copyright (C) 2010 Google Inc.
 *
 * Licensed 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 benchmarks.regression;

import java.security.SecureRandom;
import java.util.Random;

public class RandomBenchmark {
    public void timeNewRandom(int reps) throws Exception {
        for (int i = 0; i < reps; ++i) {
            Random rng = new Random();
            rng.nextInt();
        }
    }

    public void timeReusedRandom(int reps) throws Exception {
        Random rng = new Random();
        for (int i = 0; i < reps; ++i) {
            rng.nextInt();
        }
    }

    public void timeReusedSecureRandom(int reps) throws Exception {
        SecureRandom rng = new SecureRandom();
        for (int i = 0; i < reps; ++i) {
            rng.nextInt();
        }
    }

    public void timeNewSecureRandom(int reps) throws Exception {
        for (int i = 0; i < reps; ++i) {
            SecureRandom rng = new SecureRandom();
            rng.nextInt();
        }
    }
}