1 /*
2 * Copyright (C) 2019, Matthias Sohn <matthias.sohn@sap.com>
3 * and other copyright owners as documented in the project's IP log.
4 *
5 * This program and the accompanying materials are made available
6 * under the terms of the Eclipse Distribution License v1.0 which
7 * accompanies this distribution, is reproduced below, and is
8 * available at http://www.eclipse.org/org/documents/edl-v10.php
9 *
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials provided
22 * with the distribution.
23 *
24 * - Neither the name of the Eclipse Foundation, Inc. nor the
25 * names of its contributors may be used to endorse or promote
26 * products derived from this software without specific prior
27 * written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
30 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
31 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
34 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
35 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
36 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
37 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
38 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
41 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42 */
43 package org.eclipse.jgit.benchmarks;
44
45 import java.io.IOException;
46 import java.nio.file.FileStore;
47 import java.nio.file.Files;
48 import java.nio.file.Path;
49 import java.util.concurrent.TimeUnit;
50
51 import org.eclipse.jgit.util.FileUtils;
52 import org.openjdk.jmh.annotations.Benchmark;
53 import org.openjdk.jmh.annotations.BenchmarkMode;
54 import org.openjdk.jmh.annotations.Mode;
55 import org.openjdk.jmh.annotations.OutputTimeUnit;
56 import org.openjdk.jmh.annotations.Scope;
57 import org.openjdk.jmh.annotations.Setup;
58 import org.openjdk.jmh.annotations.State;
59 import org.openjdk.jmh.annotations.TearDown;
60 import org.openjdk.jmh.profile.StackProfiler;
61 import org.openjdk.jmh.runner.Runner;
62 import org.openjdk.jmh.runner.RunnerException;
63 import org.openjdk.jmh.runner.options.Options;
64 import org.openjdk.jmh.runner.options.OptionsBuilder;
65
66 @State(Scope.Thread)
67 public class LookupFileStoreBenchmark {
68
69 Path path;
70
71 @Setup
72 public void setupBenchmark() throws IOException {
73 path = Files.createTempFile("test", "x");
74 }
75
76 @TearDown
77 public void teardown() throws IOException {
78 FileUtils.delete(path.toFile(), FileUtils.RETRY);
79 }
80
81 @Benchmark
82 @BenchmarkMode({ Mode.AverageTime })
83 @OutputTimeUnit(TimeUnit.NANOSECONDS)
84 public FileStore testLookupFileStore() throws IOException {
85 FileStore fs = Files.getFileStore(path);
86 return fs;
87 }
88
89 public static void main(String[] args) throws RunnerException {
90 Options opt = new OptionsBuilder()
91 .include(LookupFileStoreBenchmark.class.getSimpleName())
92 .addProfiler(StackProfiler.class)
93 // .addProfiler(GCProfiler.class)
94 .forks(1).jvmArgs("-ea").build();
95 new Runner(opt).run();
96 }
97 }