115 lines
4.1 KiB
Java
115 lines
4.1 KiB
Java
/*
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* Copyright (c) 2014, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.openjdk.bench.java.util;
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import org.openjdk.jmh.annotations.Benchmark;
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import org.openjdk.jmh.annotations.BenchmarkMode;
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import org.openjdk.jmh.annotations.Fork;
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import org.openjdk.jmh.annotations.Measurement;
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import org.openjdk.jmh.annotations.Mode;
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import org.openjdk.jmh.annotations.OutputTimeUnit;
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import org.openjdk.jmh.annotations.Scope;
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import org.openjdk.jmh.annotations.Setup;
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import org.openjdk.jmh.annotations.State;
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import org.openjdk.jmh.annotations.TearDown;
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import org.openjdk.jmh.annotations.Warmup;
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import org.openjdk.jmh.infra.Blackhole;
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import java.io.IOException;
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import java.net.URISyntaxException;
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import java.util.concurrent.TimeUnit;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipFile;
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/**
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* Tests ZipFile.getEntry() on the microbenchmarks.jar zip file
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*/
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@BenchmarkMode(Mode.AverageTime)
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@OutputTimeUnit(TimeUnit.NANOSECONDS)
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@State(Scope.Thread)
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@Warmup(iterations = 4, time = 2)
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@Measurement(iterations = 4, time = 2)
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@Fork(value = 3)
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public class ZipFind {
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// Files that exist in the microbenchmarks.jar zip file
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public static final String[] existingFiles = {"org/openjdk/bench/java/util/ZipFind.class",
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"org/openjdk/bench/vm/lang/Throw.class",
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"org/openjdk/bench/java/nio/ByteBuffers.class"};
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public static String[] nonExistingFiles = {"/try/to/findme.not", "needle/in/a/HayStack.class"};
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private ZipFile zip;
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@Setup
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public void prepare() throws IOException, URISyntaxException {
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String zipFile = this.getClass().getProtectionDomain().getCodeSource().getLocation().toURI().getPath();
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zip = new ZipFile(zipFile);
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// Verify no typos in the filename lists above
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assert zip.getEntry(ZipFind.nonExistingFiles[0]) == null;
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assert zip.getEntry(ZipFind.existingFiles[0]) != null;
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assert zip.getEntry(ZipFind.existingFiles[1]) != null;
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assert zip.getEntry(ZipFind.existingFiles[2]) != null;
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}
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@TearDown
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public void cleanup() throws IOException {
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zip.close();
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}
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@Benchmark
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public ZipEntry testOneNonExisting() throws IOException {
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return zip.getEntry(ZipFind.nonExistingFiles[0]);
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}
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@Benchmark
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public void testTwoNonExisting(Blackhole bh) throws IOException {
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bh.consume(zip.getEntry(nonExistingFiles[0]));
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bh.consume(zip.getEntry(nonExistingFiles[1]));
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}
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@Benchmark
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public void testNonExistingAndExisting(Blackhole bh) throws IOException {
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bh.consume(zip.getEntry(nonExistingFiles[0]));
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bh.consume(zip.getEntry(existingFiles[0]));
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}
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@Benchmark
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public ZipEntry testOneExisting() throws IOException {
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return zip.getEntry(ZipFind.existingFiles[0]);
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}
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@Benchmark
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public void testTwoExisting(Blackhole bh) throws IOException {
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bh.consume(zip.getEntry(existingFiles[0]));
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bh.consume(zip.getEntry(existingFiles[1]));
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}
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@Benchmark
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public void testThreeExisting(Blackhole bh) throws IOException {
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bh.consume(zip.getEntry(existingFiles[0]));
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bh.consume(zip.getEntry(existingFiles[1]));
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bh.consume(zip.getEntry(existingFiles[2]));
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}
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}
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