| /* |
| * 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.qpid.protonj2.engine.util; |
| |
| import java.util.Map; |
| import java.util.Queue; |
| import java.util.Random; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.openjdk.jmh.annotations.Benchmark; |
| import org.openjdk.jmh.annotations.BenchmarkMode; |
| import org.openjdk.jmh.annotations.Measurement; |
| import org.openjdk.jmh.annotations.Mode; |
| import org.openjdk.jmh.annotations.OutputTimeUnit; |
| import org.openjdk.jmh.annotations.Scope; |
| import org.openjdk.jmh.annotations.Setup; |
| import org.openjdk.jmh.annotations.State; |
| import org.openjdk.jmh.annotations.Warmup; |
| import org.openjdk.jmh.infra.Blackhole; |
| import org.openjdk.jmh.profile.GCProfiler; |
| import org.openjdk.jmh.runner.Runner; |
| import org.openjdk.jmh.runner.RunnerException; |
| import org.openjdk.jmh.runner.options.Options; |
| import org.openjdk.jmh.runner.options.OptionsBuilder; |
| |
| /** |
| * Base for benchmarks involving {@link Map} types. |
| */ |
| @State(Scope.Benchmark) |
| @BenchmarkMode(Mode.AverageTime) |
| @OutputTimeUnit(TimeUnit.MILLISECONDS) |
| @Warmup(iterations = 5, time = 2) |
| @Measurement(iterations = 5, time = 1) |
| public class RingQueueBenchmark { |
| |
| public static final int DEFAULT_MAP_VALUE_RANGE = 8192; |
| |
| protected final String DUMMY_STRING = "ASDFGHJ"; |
| protected final Random random = new Random(); |
| |
| @Setup |
| public void init() { |
| this.random.setSeed(System.currentTimeMillis()); |
| } |
| |
| @Benchmark |
| public void offer() { |
| final Queue<String> queue = new RingQueue<>(32); |
| |
| for (int i = 0; i < DEFAULT_MAP_VALUE_RANGE; ++i) { |
| if (!queue.offer(DUMMY_STRING)) { |
| queue.clear(); |
| queue.offer(DUMMY_STRING); |
| } |
| } |
| } |
| |
| @Benchmark |
| public void produceAndConsume(Blackhole blackHole) { |
| final Queue<String> queue = new RingQueue<>(32); |
| |
| for (int i = 0; i < 32; ++i) { |
| queue.offer(DUMMY_STRING); |
| } |
| |
| for (int p = 0; p < DEFAULT_MAP_VALUE_RANGE; ++p) { |
| blackHole.consume(queue.poll()); |
| queue.offer(DUMMY_STRING); |
| } |
| } |
| |
| @Benchmark |
| public void contains(Blackhole blackHole) { |
| final Queue<Integer> queue = new RingQueue<>(256); |
| |
| for (int i = 0; i < 256; ++i) { |
| queue.offer(Integer.valueOf(i)); |
| } |
| |
| for (int i = 0; i < 256; ++i) { |
| blackHole.consume(queue.contains(Integer.valueOf(i))); |
| } |
| } |
| |
| public static void main(String[] args) throws RunnerException { |
| runBenchmark(RingQueueBenchmark.class); |
| } |
| |
| public static void runBenchmark(Class<?> benchmarkClass) throws RunnerException { |
| final Options opt = new OptionsBuilder() |
| .include(benchmarkClass.getSimpleName()) |
| .addProfiler(GCProfiler.class) |
| .shouldDoGC(true) |
| .warmupIterations(5) |
| .measurementIterations(5) |
| .forks(1) |
| .build(); |
| |
| new Runner(opt).run(); |
| } |
| } |