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Copy pathFlattenIterableArrayPerf.java
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93 lines (74 loc) · 2.3 KB
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/*
* Copyright 2011-2016 David Karnok
*
* 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 ix;
import java.util.Arrays;
import java.util.concurrent.TimeUnit;
import org.openjdk.jmh.annotations.*;
import org.openjdk.jmh.infra.Blackhole;
/**
* Example benchmark. Run from command line as
* <br>
* gradle jmh -Pjmh='IxPerf'
*/
@BenchmarkMode(Mode.Throughput)
@Warmup(iterations = 5)
@Measurement(iterations = 5, time = 1, timeUnit = TimeUnit.SECONDS)
@OutputTimeUnit(TimeUnit.SECONDS)
@Fork(value = 1)
@State(Scope.Thread)
public class FlattenIterableArrayPerf implements IxFunction<Integer, Iterable<Integer>> {
@Param({"1", "10", "100", "1000", "10000", "100000", "1000000"})
public int count;
Ix<Integer> source;
Ix<Integer> inner;
Ix<Integer> flatMapJust;
@Override
public Iterable<Integer> apply(Integer t) {
return inner;
}
@Setup
public void setup(Blackhole bh) {
int d = 1000000 / count;
Integer[] countArray = new Integer[count];
Arrays.fill(countArray, 777);
inner = Ix.fromArray(countArray);
Integer[] sourceArray = new Integer[d];
Arrays.fill(sourceArray, 777);
source = Ix.fromArray(sourceArray).flatMap(this);
flatMapJust = inner.flatMap(new IxFunction<Integer, Iterable<Integer>>() {
@Override
public Iterable<Integer> apply(Integer v) {
return Ix.just(v);
}
});
}
@Benchmark
public Object xrangeLast() {
return source.last();
}
@Benchmark
public void xrangeEach(Blackhole bh) {
for (Integer i : source) {
bh.consume(i);
}
}
@Benchmark
public void flatMapJust(Blackhole bh) {
for (Integer i : flatMapJust) {
bh.consume(i);
}
}
}