mirror of
https://github.com/flutter/flutter
synced 2024-08-24 18:36:03 +00:00
Add UI Benchmarks (#143542)
Part 1 of https://github.com/flutter/flutter/pull/138481 Cherry picking @ignatz work.
This commit is contained in:
parent
0bd7d3167a
commit
74a2e0d138
|
@ -0,0 +1,181 @@
|
|||
// Copyright 2014 The Flutter Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style license that can be
|
||||
// found in the LICENSE file.
|
||||
|
||||
import 'package:flutter/animation.dart';
|
||||
import 'package:flutter/foundation.dart';
|
||||
import 'package:flutter_test/flutter_test.dart';
|
||||
|
||||
import '../common.dart';
|
||||
|
||||
const int _kNumIterationsList = 2 << 14;
|
||||
const int _kNumIterationsHashed = 2 << 19;
|
||||
const int _kNumWarmUp = 2 << 6;
|
||||
const List<int> callbackCounts = <int>[1, 10, 100, 500];
|
||||
|
||||
class TestAnimationController extends AnimationController {
|
||||
TestAnimationController() : super(vsync: const TestVSync());
|
||||
|
||||
@override
|
||||
void notifyListeners() => super.notifyListeners();
|
||||
}
|
||||
|
||||
void main() {
|
||||
assert(false,
|
||||
"Don't run benchmarks in debug mode! Use 'flutter run --release'.");
|
||||
|
||||
final BenchmarkResultPrinter printer = BenchmarkResultPrinter();
|
||||
|
||||
void runNotifiyListenersLoopWithObserverList(
|
||||
int totalIterations, {
|
||||
bool failRemoval = false,
|
||||
bool addResult = true,
|
||||
}) {
|
||||
final String suffix = failRemoval ? 'removalFail' : 'removalSuccess';
|
||||
final String name = 'notifyListeners:ObserverList:$suffix';
|
||||
|
||||
void miss() {}
|
||||
|
||||
for (final int callbackCount in callbackCounts) {
|
||||
final int iterations = totalIterations ~/ callbackCount;
|
||||
|
||||
final ObserverList<VoidCallback> observerList =
|
||||
ObserverList<VoidCallback>();
|
||||
for (int i = 0; i < callbackCount; ++i) {
|
||||
observerList.add(
|
||||
switch (failRemoval) {
|
||||
false => () {
|
||||
final VoidCallback first =
|
||||
(observerList.iterator..moveNext()).current;
|
||||
|
||||
observerList.remove(first);
|
||||
observerList.add(first);
|
||||
},
|
||||
true => () => observerList.remove(miss),
|
||||
},
|
||||
);
|
||||
}
|
||||
|
||||
final Stopwatch watch = Stopwatch()..start();
|
||||
|
||||
for (int i = 0; i < iterations; ++i) {
|
||||
final List<VoidCallback> list = observerList.toList(growable: false);
|
||||
for (final VoidCallback cb in list) {
|
||||
if (observerList.contains(cb)) {
|
||||
cb();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
watch.stop();
|
||||
|
||||
if (addResult) {
|
||||
printer.addResult(
|
||||
description: '$name ($callbackCount callbacks)',
|
||||
value: watch.elapsedMicroseconds / iterations,
|
||||
unit: 'µs per iteration',
|
||||
name: '$name$callbackCount',
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void runNotifiyListenersLoopWithHashedObserverList(
|
||||
int totalIterations, {
|
||||
bool addResult = true,
|
||||
}) {
|
||||
const String name = 'notifyListeners:HashedObserverList';
|
||||
|
||||
for (final int callbackCount in callbackCounts) {
|
||||
final int iterations = totalIterations ~/ callbackCount;
|
||||
|
||||
final HashedObserverList<VoidCallback> observerList =
|
||||
HashedObserverList<VoidCallback>();
|
||||
for (int i = 0; i < callbackCount; ++i) {
|
||||
observerList.add(() {
|
||||
final VoidCallback first =
|
||||
(observerList.iterator..moveNext()).current;
|
||||
|
||||
observerList.remove(first);
|
||||
observerList.add(first);
|
||||
});
|
||||
}
|
||||
|
||||
final Stopwatch watch = Stopwatch()..start();
|
||||
|
||||
for (int i = 0; i < iterations; ++i) {
|
||||
final List<VoidCallback> list = observerList.toList(growable: false);
|
||||
for (final VoidCallback cb in list) {
|
||||
if (observerList.contains(cb)) {
|
||||
cb();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
watch.stop();
|
||||
|
||||
if (addResult) {
|
||||
printer.addResult(
|
||||
description: '$name ($callbackCount callbacks)',
|
||||
value: watch.elapsedMicroseconds / iterations,
|
||||
unit: 'µs per iteration',
|
||||
name: '$name$callbackCount',
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void runNotifiyListenersLoopWithAnimationController(
|
||||
int totalIterations, {
|
||||
bool addResult = true,
|
||||
}) {
|
||||
const String name = 'notifyListeners:AnimationController';
|
||||
|
||||
for (final int callbackCount in callbackCounts) {
|
||||
final int iterations = totalIterations ~/ callbackCount;
|
||||
|
||||
final TestAnimationController controller = TestAnimationController();
|
||||
for (int i = 0; i < callbackCount; ++i) {
|
||||
late final VoidCallback cb;
|
||||
cb = () {
|
||||
controller.removeListener(cb);
|
||||
controller.addListener(cb);
|
||||
};
|
||||
controller.addListener(cb);
|
||||
}
|
||||
|
||||
final Stopwatch watch = Stopwatch()..start();
|
||||
|
||||
for (int i = 0; i < iterations; ++i) {
|
||||
controller.notifyListeners();
|
||||
}
|
||||
|
||||
watch.stop();
|
||||
|
||||
if (addResult) {
|
||||
printer.addResult(
|
||||
description: '$name ($callbackCount callbacks)',
|
||||
value: watch.elapsedMicroseconds / iterations,
|
||||
unit: 'µs per iteration',
|
||||
name: '$name$callbackCount',
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
runNotifiyListenersLoopWithObserverList(_kNumWarmUp, addResult: false);
|
||||
runNotifiyListenersLoopWithObserverList(_kNumIterationsList);
|
||||
|
||||
runNotifiyListenersLoopWithObserverList(_kNumWarmUp,
|
||||
failRemoval: true, addResult: false);
|
||||
runNotifiyListenersLoopWithObserverList(_kNumIterationsList,
|
||||
failRemoval: true);
|
||||
|
||||
runNotifiyListenersLoopWithHashedObserverList(_kNumWarmUp, addResult: false);
|
||||
runNotifiyListenersLoopWithHashedObserverList(_kNumIterationsHashed);
|
||||
|
||||
runNotifiyListenersLoopWithAnimationController(_kNumWarmUp, addResult: false);
|
||||
runNotifiyListenersLoopWithAnimationController(_kNumIterationsHashed);
|
||||
|
||||
printer.printToStdout();
|
||||
}
|
|
@ -57,6 +57,7 @@ TaskFunction createMicrobenchmarkTask({
|
|||
...await runMicrobench('lib/foundation/all_elements_bench.dart'),
|
||||
...await runMicrobench('lib/foundation/change_notifier_bench.dart'),
|
||||
...await runMicrobench('lib/foundation/clamp.dart'),
|
||||
...await runMicrobench('lib/foundation/observer_list_benchmark.dart'),
|
||||
...await runMicrobench('lib/foundation/platform_asset_bundle.dart'),
|
||||
...await runMicrobench('lib/foundation/standard_message_codec_bench.dart'),
|
||||
...await runMicrobench('lib/foundation/standard_method_codec_bench.dart'),
|
||||
|
|
Loading…
Reference in a new issue