Claes Redestad 7a30c97753 8061281: Microbenchmark suite build support, directory layout and sample benchmarks
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
2018-11-16 23:39:51 +01:00

109 lines
3.9 KiB
Java

/*
* 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.util;
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.Setup;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.TearDown;
import org.openjdk.jmh.infra.Blackhole;
import java.io.IOException;
import java.net.URISyntaxException;
import java.util.concurrent.TimeUnit;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
/**
* Tests ZipFile.getEntry() on the microbenchmarks.jar zip file
*/
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@State(Scope.Thread)
public class ZipFind {
// Files that exist in the microbenchmarks.jar zip file
public static final String[] existingFiles = {"org/openjdk/bench/java/util/ZipFind.class",
"org/openjdk/bench/vm/lang/Throw.class",
"org/openjdk/bench/java/nio/ByteBuffers.class"};
public static String[] nonExistingFiles = {"/try/to/findme.not", "needle/in/a/HayStack.class"};
private ZipFile zip;
@Setup
public void prepare() throws IOException, URISyntaxException {
String zipFile = this.getClass().getProtectionDomain().getCodeSource().getLocation().toURI().getPath();
zip = new ZipFile(zipFile);
// Verify no typos in the filename lists above
assert zip.getEntry(ZipFind.nonExistingFiles[0]) == null;
assert zip.getEntry(ZipFind.existingFiles[0]) != null;
assert zip.getEntry(ZipFind.existingFiles[1]) != null;
assert zip.getEntry(ZipFind.existingFiles[2]) != null;
}
@TearDown
public void cleanup() throws IOException {
zip.close();
}
@Benchmark
public ZipEntry testOneNonExisting() throws IOException {
return zip.getEntry(ZipFind.nonExistingFiles[0]);
}
@Benchmark
public void testTwoNonExisting(Blackhole bh) throws IOException {
bh.consume(zip.getEntry(nonExistingFiles[0]));
bh.consume(zip.getEntry(nonExistingFiles[1]));
}
@Benchmark
public void testNonExistingAndExisting(Blackhole bh) throws IOException {
bh.consume(zip.getEntry(nonExistingFiles[0]));
bh.consume(zip.getEntry(existingFiles[0]));
}
@Benchmark
public ZipEntry testOneExisting() throws IOException {
return zip.getEntry(ZipFind.existingFiles[0]);
}
@Benchmark
public void testTwoExisting(Blackhole bh) throws IOException {
bh.consume(zip.getEntry(existingFiles[0]));
bh.consume(zip.getEntry(existingFiles[1]));
}
@Benchmark
public void testThreeExisting(Blackhole bh) throws IOException {
bh.consume(zip.getEntry(existingFiles[0]));
bh.consume(zip.getEntry(existingFiles[1]));
bh.consume(zip.getEntry(existingFiles[2]));
}
}