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- /*
- * Copyright (C) 2019, Matthias Sohn <matthias.sohn@sap.com> and others
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Distribution License v. 1.0 which is available at
- * https://www.eclipse.org/org/documents/edl-v10.php.
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
- 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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