jmh-string-concat/src/main/java/com/decathlon/MyBenchmark.java

71 lines
2.9 KiB
Java

/*
* Copyright (c) 2014, Oracle America, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Oracle nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.decathlon;
import com.decathlon.concatenation.AddOperatorConcatenator;
import com.decathlon.concatenation.AppendConcatenator;
import com.decathlon.concatenation.StringConcatenator;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Mode;
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.concurrent.TimeUnit;
@State(Scope.Benchmark)
@BenchmarkMode({
Mode.AverageTime, // temps moyen
Mode.Throughput // nombre d'execution par milliseconde
})
@Warmup(iterations = 5, time = 2)
//@Fork(2) // start multiple JVM
public class MyBenchmark {
@Benchmark
@OutputTimeUnit(TimeUnit.MILLISECONDS)
public void concatWithAddOperator(Blackhole blackhole) {
StringConcatenator concatenator = new AddOperatorConcatenator();
blackhole.consume(concatenator.concat("a fond", "la forme"));
}
@Benchmark
@OutputTimeUnit(TimeUnit.MILLISECONDS)
public void concatAppender(Blackhole blackhole) {
StringConcatenator concatenator = new AppendConcatenator();
blackhole.consume(concatenator.concat("a fond", "la forme"));
}
}