GroupBenchSharingTest.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
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package org.openjdk.jmh.it.sharing;

import org.junit.Assert;
import org.junit.Test;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Group;
import org.openjdk.jmh.annotations.GroupThreads;
import org.openjdk.jmh.annotations.Level;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.TearDown;
import org.openjdk.jmh.annotations.Warmup;
import org.openjdk.jmh.it.Fixtures;
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;

import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.TimeUnit;

@State(Scope.Group)
public class GroupBenchSharingTest {

    final Set<Thread> visitors = Collections.synchronizedSet(new HashSet<>());

    @TearDown(Level.Trial)
    public void tearDown() {
        if (Fixtures.expectStableThreads()) {
            Assert.assertEquals(4, visitors.size());
        } else {
            Assert.assertTrue(visitors.size() >= 4);
        }
    }

    @Benchmark
    @BenchmarkMode(Mode.All)
    @Warmup(iterations = 0)
    @Measurement(iterations = 2, time = 100, timeUnit = TimeUnit.MILLISECONDS)
    @Fork(1)
    @Group("group1")
    @GroupThreads(2)
    public void test1() {
        Fixtures.work();
        visitors.add(Thread.currentThread());
    }

    @Benchmark
    @BenchmarkMode(Mode.All)
    @Warmup(iterations = 0)
    @Measurement(iterations = 2, time = 100, timeUnit = TimeUnit.MILLISECONDS)
    @Fork(1)
    @Group("group1")
    @GroupThreads(2)
    public void test2() {
        Fixtures.work();
        visitors.add(Thread.currentThread());
    }

    @Test
    public void invokeAPI() throws RunnerException {
        for (int c = 0; c < Fixtures.repetitionCount(); c++) {
            Options opt = new OptionsBuilder()
                    .include(Fixtures.getTestMask(this.getClass()))
                    .shouldFailOnError(true)
                    .build();
            new Runner(opt).run();
        }
    }

}