Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
/**
* 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 rxjava;
import rx.subjects.BoundedReplaySubject;
import rx.subjects.PublishSubject;
import rx.subjects.ReplaySubject;
import rx.subjects.Subject;
import rx.util.functions.Action1;
import rx.util.functions.Func0;
/**
*
*/
public class BoundedReplaySubjectBenchmark {
static int n = 10;
static int c = 500_000;
static void benchmark(final Func0<Subject<Object, Object>> replayer, final Func0<Subject<Object, Object>> publisher, int flags) {
if ((flags & 1) != 0) {
System.out.println("ReplaySubject fill");
Util.measureLoop(n, c, new Runnable() {
public void run() {
Subject<Object, Object> rs = replayer.call();
for (int i = 0; i < c; i++) {
rs.onNext(i);
}
}
});
}
// --------------------------------------------------
if ((flags & 1) != 0) {
System.out.println("ReplaySubject fill 2");
Util.measureLoop(n, c, new Runnable() {
public void run() {
Subject<Object, Object> rs = replayer.call();
for (int i = 0; i < c; i++) {
rs.onNext(i);
}
}
});
}
// --------------------------------------------------
if ((flags & 2) != 0) {
System.out.println("ReplaySubject just replay");
final Subject<Object, Object> rs0 = replayer.call();
for (int i = 0; i < c; i++) {
rs0.onNext(i);
}
Util.measureLoop(n, c, new Runnable() {
public void run() {
final int[] value = new int[1];
rs0.subscribe(new Action1<Object>(){ public void call(Object o) { value[0]++; }});
if (value[0] != c) {
System.err.println("Events lost: " + value[0]);
}
}
});
}
// --------------------------------------------------
if ((flags & 4) != 0) {
System.out.println("ReplaySubject fill & consume");
Util.measureLoop(n, c, new Runnable() {
public void run() {
Subject<Object, Object> rs = replayer.call();
final int[] value = new int[1];
rs.subscribe(new Action1<Object>(){ public void call(Object o) { value[0]++; }});
for (int i = 0; i < c; i++) {
rs.onNext(i);
}
if (value[0] != c) {
System.err.println("Events lost: " + value[0]);
}
}
});
}
// --------------------------------------------------
if ((flags & 8) != 0) {
System.out.println("PublishSubject fill & consume");
Util.measureLoop(n, c, new Runnable() {
public void run() {
publishSubjectFillConsume(publisher);
}
});
}
}
static void publishSubjectFillConsume(Func0<Subject<Object, Object>> publisher) {
Subject<Object, Object> rs = publisher.call();
final int[] value = new int[1];
rs.subscribe(new Action1<Object>(){ public void call(Object o) { value[0]++; }});
produce1(rs);
if (value[0] != c) {
System.err.println("Events lost: " + value[0]);
}
}
static void produce1(Subject<Object, Object> rs) {
for (int i = 0; i < c; i++) {
rs.onNext(i);
}
}
public static void main(String[] args) {
System.out.println("BASELINE");
/*
benchmark(new Func0<Subject<Object, Object>>() {
@Override
public Subject<Object, Object> call() {
return ReplaySubject.create();
}
}, new Func0<Subject<Object, Object>>() {
@Override
public Subject<Object, Object> call() {
return PublishSubject.create();
}
}, 15);
*/
System.out.println("XOXOXOXOXOXOXOXOXOXOXOXOXOXO");
System.out.println("ALTERNATIVE");
benchmark(new Func0<Subject<Object, Object>>() {
@Override
public Subject<Object, Object> call() {
return BoundedReplaySubject.create();
}
}, new Func0<Subject<Object, Object>>() {
@Override
public Subject<Object, Object> call() {
return BoundedReplaySubject.create(0);
}
}, 8);
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment