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FromIterablePerf.java
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85 lines (75 loc) · 2.36 KB
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/**
* 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.Arrays;
import java.util.concurrent.TimeUnit;
import org.openjdk.jmh.annotations.*;
import org.openjdk.jmh.infra.Blackhole;
import rx.*;
import rx.internal.operators.OnSubscribeFromIterable;
import rx.jmh.LatchedObserver;
/**
* Benchmark from(Iterable).
* <p>
* gradlew benchmarks "-Pjmh=-f 1 -tu s -bm thrpt -wi 5 -i 5 -r 1 .*FromIterablePerf.*"
* <p>
* gradlew benchmarks "-Pjmh=-f 1 -tu ns -bm avgt -wi 5 -i 5 -r 1 .*FromIterablePerf.*"
*/
@BenchmarkMode(Mode.Throughput)
@OutputTimeUnit(TimeUnit.SECONDS)
@State(Scope.Thread)
public class FromIterablePerf {
Observable<Integer> from;
OnSubscribeFromIterable<Integer> direct;
@Param({"1", "1000", "1000000"})
public int size;
@Setup
public void setup() {
Integer[] array = new Integer[size];
for (int i = 0; i < size; i++) {
array[i] = i;
}
from = Observable.from(Arrays.asList(array));
direct = new OnSubscribeFromIterable<Integer>(Arrays.asList(array));
}
@Benchmark
public void from(Blackhole bh) {
from.subscribe(new LatchedObserver<Integer>(bh));
}
@Benchmark
public void fromUnsafe(final Blackhole bh) {
from.unsafeSubscribe(createSubscriber(bh));
}
@Benchmark
public void direct(final Blackhole bh) {
direct.call(createSubscriber(bh));
}
Subscriber<Integer> createSubscriber(final Blackhole bh) {
return new Subscriber<Integer>() {
@Override
public void onNext(Integer t) {
bh.consume(t);
}
@Override
public void onError(Throwable e) {
e.printStackTrace();
}
@Override
public void onCompleted() {
}
};
}
}