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- /*
- * Copyright (C) 2019, Matthias Sohn <matthias.sohn@sap.com>
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * 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 the Eclipse Foundation, Inc. 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 OWNER 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 CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- package org.eclipse.jgit.benchmarks;
-
- import java.io.IOException;
- import java.nio.file.Files;
- import java.nio.file.Path;
- import java.util.concurrent.TimeUnit;
-
- import org.eclipse.jgit.internal.storage.file.FileSnapshot;
- import org.eclipse.jgit.util.FileUtils;
- import org.openjdk.jmh.annotations.Benchmark;
- import org.openjdk.jmh.annotations.BenchmarkMode;
- import org.openjdk.jmh.annotations.Measurement;
- 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.annotations.Warmup;
- import org.openjdk.jmh.runner.Runner;
- import org.openjdk.jmh.runner.RunnerException;
- import org.openjdk.jmh.runner.options.Options;
- import org.openjdk.jmh.runner.options.OptionsBuilder;
-
- @State(Scope.Thread)
- public class CreateFileSnapshotBenchmark {
-
- Path path;
-
- Path testDir;
-
- @Setup
- public void setupBenchmark() throws IOException {
- testDir = Files.createTempDirectory("dir");
- path = testDir.resolve("toSnapshot");
- Files.createFile(path);
- }
-
- @TearDown
- public void teardown() throws IOException {
- FileUtils.delete(testDir.toFile(), FileUtils.RECURSIVE | FileUtils.RETRY);
- }
-
- @Benchmark
- @BenchmarkMode({ Mode.AverageTime })
- @OutputTimeUnit(TimeUnit.NANOSECONDS)
- @Warmup(iterations = 5, time = 100, timeUnit = TimeUnit.MILLISECONDS)
- @Measurement(iterations = 5, time = 100, timeUnit = TimeUnit.MILLISECONDS)
- public Path testCreateFile() throws IOException {
- return Files.createTempFile(testDir, "create", "");
- }
-
- @Benchmark
- @BenchmarkMode({ Mode.AverageTime })
- @OutputTimeUnit(TimeUnit.NANOSECONDS)
- public FileSnapshot testCreateFileSnapshot() {
- return FileSnapshot.save(path.toFile());
- }
-
- public static void main(String[] args) throws RunnerException {
- Options opt = new OptionsBuilder()
- .include(CreateFileSnapshotBenchmark.class.getSimpleName())
- // .addProfiler(StackProfiler.class)
- // .addProfiler(GCProfiler.class)
- .forks(1).jvmArgs("-ea").build();
- new Runner(opt).run();
- }
- }
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