/**
* Copyright 2014 Netflix, Inc.
*
* 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 rx.operators;
import java.util.concurrent.TimeUnit;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Param;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import rx.Observable;
import rx.functions.Func1;
import rx.jmh.InputWithIncrementingInteger;
import rx.schedulers.Schedulers;
@BenchmarkMode(Mode.Throughput)
@OutputTimeUnit(TimeUnit.SECONDS)
@State(Scope.Thread)
public class OperatorFlatMapPerf {
@State(Scope.Thread)
public static class Input extends InputWithIncrementingInteger {
@Param({ "1", "1000", "1000000" })
public int size;
@Override
public int getSize() {
return size;
}
}
@Benchmark
public void flatMapIntPassthruSync(Input input) throws InterruptedException {
input.observable.flatMap(new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer i) {
return Observable.just(i);
}
}).subscribe(input.observer);
}
@Benchmark
public void flatMapIntPassthruAsync(Input input) throws InterruptedException {
input.observable.flatMap(new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer i) {
return Observable.just(i).subscribeOn(Schedulers.computation());
}
}).subscribe(input.observer);
}
@Benchmark
public void flatMapTwoNestedSync(final Input input) throws InterruptedException {
Observable.range(1, 2).flatMap(new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer i) {
return input.observable;
}
}).subscribe(input.observer);
}
// this runs out of memory currently
// @Benchmark
// public void flatMapTwoNestedAsync(final Input input) throws InterruptedException {
// Observable.range(1, 2).flatMap(new Func1<Integer, Observable<Integer>>() {
//
// @Override
// public Observable<Integer> call(Integer i) {
// return input.observable.subscribeOn(Schedulers.computation());
// }
//
// }).subscribe(input.observer);
// }
}