undefect. CWE-407 — 63 sites patched across 27 ecosystems
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
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/*
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* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.openjdk.bench.java.util.random;
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import org.openjdk.jmh.annotations.Benchmark;
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import org.openjdk.jmh.annotations.BenchmarkMode;
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import org.openjdk.jmh.annotations.Mode;
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import org.openjdk.jmh.annotations.OutputTimeUnit;
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import org.openjdk.jmh.annotations.Scope;
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import org.openjdk.jmh.annotations.Setup;
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import org.openjdk.jmh.annotations.State;
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import org.openjdk.jmh.annotations.Param;
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import java.util.random.RandomGenerator;
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import java.util.random.RandomGeneratorFactory;
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import java.util.concurrent.TimeUnit;
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/**
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* Tests java.util.random.RandomGenerator's implementations of nextExponential and nextGaussian
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*/
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@OutputTimeUnit(TimeUnit.NANOSECONDS)
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@State(Scope.Thread)
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public class RandomGeneratorExponentialGaussian {
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RandomGenerator randomGenerator;
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@Param({"L64X128MixRandom", "L64X1024MixRandom"})
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String randomGeneratorName;
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@Param({"false","true"})
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boolean fixedSeed;
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double[] buffer;
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@Param("1024")
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int size;
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@Setup
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public void setup() {
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buffer = new double[size];
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RandomGeneratorFactory factory = RandomGeneratorFactory.of(randomGeneratorName);
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randomGenerator = fixedSeed ? factory.create(randomGeneratorName.hashCode()) : factory.create();
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}
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@Benchmark
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@BenchmarkMode({Mode.SampleTime, Mode.AverageTime})
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public double testNextGaussian() {
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return randomGenerator.nextGaussian();
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}
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@Benchmark
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@BenchmarkMode(Mode.AverageTime)
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public double[] testFillBufferWithNextGaussian() {
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for (int i = 0; i < size; i++) buffer[i] = randomGenerator.nextGaussian();
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return buffer;
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}
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@Benchmark
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@BenchmarkMode({Mode.SampleTime, Mode.AverageTime})
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public double testNextExponential() {
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return randomGenerator.nextExponential();
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}
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@Benchmark
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@BenchmarkMode(Mode.AverageTime)
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public double[] testFillBufferWithNextExponential() {
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for (int i = 0; i < size; i++) buffer[i] = randomGenerator.nextExponential();
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return buffer;
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}
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}
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/*
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* Copyright (c) 2021, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.openjdk.bench.java.util.random;
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import org.openjdk.jmh.annotations.Benchmark;
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import org.openjdk.jmh.annotations.BenchmarkMode;
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import org.openjdk.jmh.annotations.Fork;
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import org.openjdk.jmh.annotations.Measurement;
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import org.openjdk.jmh.annotations.Mode;
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import org.openjdk.jmh.annotations.OutputTimeUnit;
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import org.openjdk.jmh.annotations.Scope;
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import org.openjdk.jmh.annotations.Setup;
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import org.openjdk.jmh.annotations.State;
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import org.openjdk.jmh.annotations.Param;
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import org.openjdk.jmh.annotations.Warmup;
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import java.util.random.RandomGenerator;
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import java.util.random.RandomGeneratorFactory;
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import java.util.concurrent.TimeUnit;
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/**
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* Tests java.util.random.RandomGenerator's different random number generators which use Math.unsignedMultiplyHigh().
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*/
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@BenchmarkMode(Mode.AverageTime)
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@OutputTimeUnit(TimeUnit.NANOSECONDS)
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@State(Scope.Thread)
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@Warmup(iterations = 4, time = 2)
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@Measurement(iterations = 4, time = 2)
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@Fork(value = 3)
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public class RandomGeneratorNext {
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RandomGenerator randomGenerator;
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@Param({"L128X128MixRandom", "L128X256MixRandom", "L128X1024MixRandom"})
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String randomGeneratorName;
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long[] buffer;
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@Param("1024")
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int size;
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@Setup
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public void setup() {
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buffer = new long[size];
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randomGenerator = RandomGeneratorFactory.of(randomGeneratorName).create(randomGeneratorName.hashCode());
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}
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@Benchmark
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public long testNextLong() {
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return randomGenerator.nextLong();
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}
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@Benchmark
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public long[] testFillBufferWithNextLong() {
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for (int i = 0; i < size; i++) buffer[i] = randomGenerator.nextLong();
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return buffer;
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}
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}
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@ -0,0 +1,71 @@
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/*
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* Copyright (c) 2014, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
|
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
|
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.openjdk.bench.java.util.random;
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import org.openjdk.jmh.annotations.Benchmark;
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import org.openjdk.jmh.annotations.BenchmarkMode;
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import org.openjdk.jmh.annotations.Fork;
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import org.openjdk.jmh.annotations.Measurement;
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import org.openjdk.jmh.annotations.Mode;
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import org.openjdk.jmh.annotations.OutputTimeUnit;
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import org.openjdk.jmh.annotations.Scope;
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import org.openjdk.jmh.annotations.Setup;
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import org.openjdk.jmh.annotations.State;
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import org.openjdk.jmh.annotations.Warmup;
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import java.util.Random;
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import java.util.concurrent.TimeUnit;
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/**
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* Tests java.util.Random's different flavours of next-methods.
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*/
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@BenchmarkMode(Mode.AverageTime)
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@OutputTimeUnit(TimeUnit.NANOSECONDS)
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@State(Scope.Thread)
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@Warmup(iterations = 4, time = 2)
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@Measurement(iterations = 4, time = 2)
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@Fork(value = 3)
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public class RandomNext {
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public Random rnd;
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@Setup
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public void setup() {
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rnd = new Random();
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}
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@Benchmark
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public int testNextInt() {
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return rnd.nextInt();
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}
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@Benchmark
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public int testNextInt100() {
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return rnd.nextInt(100);
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}
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@Benchmark
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public int testNextInt128() {
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return rnd.nextInt(128);
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}
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}
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