/*
 * 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.logging.log4j.perf.jmh;

import java.util.UUID;

import org.apache.logging.log4j.core.util.UuidUtil;
import org.openjdk.jmh.annotations.GenerateMicroBenchmark;

/**
 * Compares random UUID generation with time-based UUID generation.
 */
// ============================== HOW TO RUN THIS TEST: ====================================
//
// java -jar log4j-perf/target/microbenchmarks.jar ".*UuidGeneratorBenchmark.*" -f 1 -wi 5 -i 5
//
// Usage help:
// java -jar log4j-perf/target/microbenchmarks.jar -help
//
public class UuidGeneratorBenchmark {

    @GenerateMicroBenchmark
    public UUID base() {
        return null;
    }

    @GenerateMicroBenchmark
    public UUID randomUUID() {
        return UUID.randomUUID();
    }

    @GenerateMicroBenchmark
    public UUID timeBasedUUID() {
        return UuidUtil.getTimeBasedUuid();
    }
}

Add UUID generator benchmark.