DefaultAttributeMapBenchmark.java — netty Source File

Source Code

/*
 * Copyright 2020 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.util;

import io.netty.microbench.util.AbstractMicrobenchmark;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Level;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.Param;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Threads;
import org.openjdk.jmh.annotations.Warmup;
import org.openjdk.jmh.infra.Blackhole;

import java.util.IdentityHashMap;

@Warmup(iterations = 5, time = 1)
@Measurement(iterations = 5, time = 1)
@State(Scope.Benchmark)
public class DefaultAttributeMapBenchmark extends AbstractMicrobenchmark {

    @Param({ "8", "32", "128" })
    private int keyCount;
    private AttributeKey<Integer>[] keys;
    private IdentityHashMap<AttributeKey<Integer>, Attribute<Integer>> identityHashMap;
    private DefaultAttributeMap attributes;

    @State(Scope.Thread)
    public static class KeySequence {

        long nextKey;

        @Setup(Level.Iteration)
        public void reset() {
            nextKey = 0;
        }

        public long next() {
            return nextKey++;
        }
    }

    @Setup
    public void init() {
        if (Integer.bitCount(keyCount) != 1) {
// ... (76 more lines)