HttpMethodMapBenchmark.java — netty Source File

Source Code

/*
 * Copyright 2019 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.handler.codec.http;

import io.netty.microbench.util.AbstractMicrobenchmark;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Warmup;
import org.openjdk.jmh.infra.Blackhole;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import static io.netty.handler.codec.http.HttpMethod.CONNECT;
import static io.netty.handler.codec.http.HttpMethod.DELETE;
import static io.netty.handler.codec.http.HttpMethod.GET;
import static io.netty.handler.codec.http.HttpMethod.HEAD;
import static io.netty.handler.codec.http.HttpMethod.OPTIONS;
import static io.netty.handler.codec.http.HttpMethod.PATCH;
import static io.netty.handler.codec.http.HttpMethod.POST;
import static io.netty.handler.codec.http.HttpMethod.PUT;
import static io.netty.handler.codec.http.HttpMethod.TRACE;
import static io.netty.util.internal.MathUtil.findNextPositivePowerOfTwo;

@State(Scope.Benchmark)
@Warmup(iterations = 5)
@Measurement(iterations = 8)
@OutputTimeUnit(TimeUnit.MICROSECONDS)
public class HttpMethodMapBenchmark extends AbstractMicrobenchmark {
    private static final Map<String, HttpMethod> OLD_MAP = new HashMap<String, HttpMethod>();
    private static final SimpleStringMap<HttpMethod> NEW_MAP;
    private static final String[] KNOWN_METHODS;
    private static final String[] MIXED_METHODS;
    private static final String[] UNKNOWN_METHODS;

    static {
        // We intentionally don't use HttpMethod.toString() here to avoid the equals(..) comparison method from being
        // able to short circuit due to reference equality checks and being biased toward the new approach. This
        // simulates the behavior of HttpObjectDecoder which will build new String objects during the decode operation.
        KNOWN_METHODS = new String[] {
                "OPTIONS",
                "GET",
                "HEAD",
// ... (148 more lines)