/*
* Copyright 2015 Goldman Sachs.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.gs.collections.impl.jmh;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import com.gs.collections.api.list.MutableList;
import com.gs.collections.impl.jmh.runner.AbstractJMHTestRunner;
import com.gs.collections.impl.list.Interval;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
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;
@State(Scope.Thread)
@BenchmarkMode(Mode.Throughput)
@OutputTimeUnit(TimeUnit.SECONDS)
public class MinTest extends AbstractJMHTestRunner
{
private static final int SIZE = 3_000_000;
private static final int BATCH_SIZE = 10_000;
private final List<Integer> integersJDK = new ArrayList<>(Interval.oneTo(SIZE));
private final MutableList<Integer> integersGSC = Interval.oneTo(SIZE).toList();
private ExecutorService executorService;
@Setup
public void setUp()
{
this.executorService = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
}
@TearDown
public void tearDown() throws InterruptedException
{
this.executorService.shutdownNow();
this.executorService.awaitTermination(1L, TimeUnit.SECONDS);
}
@Benchmark
public int serial_lazy_jdk()
{
return this.integersJDK.stream().min(Comparator.<Integer>naturalOrder()).get();
}
@Benchmark
public int serial_lazy_streams_gsc()
{
return this.integersGSC.stream().min(Comparator.<Integer>naturalOrder()).get();
}
@Benchmark
public int serial_lazy_reverse_jdk()
{
return this.integersJDK.stream().min(Comparator.<Integer>reverseOrder()).get();
}
@Benchmark
public int serial_lazy_reverse_streams_gsc()
{
return this.integersGSC.stream().min(Comparator.<Integer>reverseOrder()).get();
}
@Benchmark
public int serial_lazy_intstream_jdk()
{
return this.integersJDK.stream().mapToInt(Integer::intValue).min().getAsInt();
}
@Benchmark
public int serial_lazy_intstream_streams_gsc()
{
return this.integersGSC.stream().mapToInt(Integer::intValue).min().getAsInt();
}
@Benchmark
public int parallel_lazy_jdk()
{
return this.integersJDK.parallelStream().min(Comparator.<Integer>naturalOrder()).get();
}
@Benchmark
public int parallel_lazy_streams_gsc()
{
return this.integersGSC.parallelStream().min(Comparator.<Integer>naturalOrder()).get();
}
@Benchmark
public int parallel_lazy_reverse_jdk()
{
return this.integersJDK.parallelStream().min(Comparator.<Integer>reverseOrder()).get();
}
@Benchmark
public int parallel_lazy_reverse_streams_gsc()
{
return this.integersGSC.parallelStream().min(Comparator.<Integer>reverseOrder()).get();
}
@Benchmark
public int parallel_lazy_intstream_jdk()
{
return this.integersJDK.parallelStream().mapToInt(Integer::intValue).min().getAsInt();
}
@Benchmark
public int parallel_lazy_intstream_streams_gsc()
{
return this.integersGSC.parallelStream().mapToInt(Integer::intValue).min().getAsInt();
}
@Benchmark
public int serial_eager_gsc()
{
return this.integersGSC.min(Comparator.<Integer>naturalOrder());
}
@Benchmark
public int serial_eager_reverse_gsc()
{
return this.integersGSC.min(Comparator.<Integer>reverseOrder());
}
@Benchmark
public int serial_lazy_gsc()
{
return this.integersGSC.asLazy().min(Comparator.<Integer>naturalOrder());
}
@Benchmark
public int serial_lazy_reverse_gsc()
{
return this.integersGSC.asLazy().min(Comparator.<Integer>reverseOrder());
}
@Benchmark
public int parallel_lazy_gsc()
{
return this.integersGSC.asParallel(this.executorService, BATCH_SIZE).min(Comparator.<Integer>naturalOrder());
}
@Benchmark
public int parallel_lazy_reverse_gsc()
{
return this.integersGSC.asParallel(this.executorService, BATCH_SIZE).min(Comparator.<Integer>reverseOrder());
}
}