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8061281: Microbenchmark suite build support, directory layout and sample benchmarks

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8061282: Migrate jmh-jdk-microbenchmarks into the JDK

Co-authored-by: Magnus Ihse Bursie <magnus.ihse.bursie@oracle.com>
Co-authored-by: Erik Joelsson <erik.joelsson@oracle.com>
Co-authored-by: Staffan Friberg <sfriberg@kth.se>
Reviewed-by: ecaspole, mchung, erikj, ihse
This commit is contained in:
Claes Redestad 2018-11-16 23:39:51 +01:00
parent 14b7467279
commit 7a30c97753
247 changed files with 26097 additions and 13 deletions
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89
test/micro/org/openjdk/bench/java/lang/FloatingDecimal.java Normal file
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/*
* Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package org.openjdk.bench.java.lang;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OperationsPerInvocation;
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.infra.Blackhole;
import java.util.Random;
import java.util.concurrent.TimeUnit;
/**
* Tests for sun.misc.FloatingDecimal. Performs floating point number to String conversions.
*/
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@State(Scope.Thread)
public class FloatingDecimal {
private double[] randomArray, twoDecimalsArray, integerArray;
private static final int TESTSIZE = 1000;
@Setup
public void setup() {
Random r = new Random(1123);
randomArray = new double[TESTSIZE];
twoDecimalsArray = new double[TESTSIZE];
integerArray = new double[TESTSIZE];
for (int i = 0; i < TESTSIZE; i++) {
randomArray[i] = r.nextDouble() * 10000.0D;
twoDecimalsArray[i] = ((double) (10000 - r.nextInt(20000))) / 100;
integerArray[i] = (double) (100 - r.nextInt(200));
}
}
/** Tests Double.toString on double values generated from Random.nextDouble() */
@Benchmark
@OperationsPerInvocation(TESTSIZE)
public void randomDoubleToString(Blackhole bh) {
for (double d : randomArray) {
bh.consume(Double.toString(d));
}
}
/** Tests Double.toString on double values that are integers between -100 and 100. */
@Benchmark
@OperationsPerInvocation(TESTSIZE)
public void integerDoubleToString(Blackhole bh) {
for (double d : integerArray) {
bh.consume(Double.toString(d));
}
}
/** Tests Double.toString on double values that are between -100 and 100 and have two decimal digits. */
@Benchmark
@OperationsPerInvocation(TESTSIZE)
public void twoDecimalsDoubleToString(Blackhole bh) {
for (double d : twoDecimalsArray) {
bh.consume(Double.toString(d));
}
}
}