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https://github.com/encounter/engine.git
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liyuqian
9f088c65ee
Using it, a Flutter app can monitor missing frames in the release mode, and a custom Flutter runner (e.g., Fuchsia) can add a custom FrameRasterizedCallback. Related issues: https://github.com/flutter/flutter/issues/26154 https://github.com/flutter/flutter/issues/31444 https://github.com/flutter/flutter/issues/32447 Need review as soon as possible so we can merge this before the end of May to catch the milestone. Tests added: * NoNeedToReportTimingsByDefault * NeedsReportTimingsIsSetWithCallback * ReportTimingsIsCalled * FrameRasterizedCallbackIsCalled * FrameTimingSetsAndGetsProperly * onReportTimings preserves callback zone * FrameTiming.toString has the correct format This will need a manual engine roll as the TestWindow defined in the framework needs to implement onReportTimings.
81 lines
2.5 KiB
C++
81 lines
2.5 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flutter/benchmarking/benchmarking.h"
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#include "flutter/fml/logging.h"
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#include "flutter/shell/common/shell.h"
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#include "flutter/shell/common/thread_host.h"
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namespace flutter {
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static void StartupAndShutdownShell(benchmark::State& state,
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bool measure_startup,
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bool measure_shutdown) {
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std::unique_ptr<Shell> shell;
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std::unique_ptr<ThreadHost> thread_host;
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{
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benchmarking::ScopedPauseTiming pause(state, !measure_startup);
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Settings settings = {};
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settings.task_observer_add = [](intptr_t, fml::closure) {};
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settings.task_observer_remove = [](intptr_t) {};
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// Measure the time it takes to setup the threads as well.
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thread_host = std::make_unique<ThreadHost>(
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"io.flutter.bench.", ThreadHost::Type::Platform |
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ThreadHost::Type::GPU | ThreadHost::Type::IO |
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ThreadHost::Type::UI);
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TaskRunners task_runners("test",
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thread_host->platform_thread->GetTaskRunner(),
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thread_host->gpu_thread->GetTaskRunner(),
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thread_host->ui_thread->GetTaskRunner(),
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thread_host->io_thread->GetTaskRunner());
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shell = Shell::Create(
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std::move(task_runners), settings,
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[](Shell& shell) {
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return std::make_unique<PlatformView>(shell, shell.GetTaskRunners());
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},
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[](Shell& shell) {
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return std::make_unique<Rasterizer>(shell, shell.GetTaskRunners());
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});
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}
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FML_CHECK(shell);
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{
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benchmarking::ScopedPauseTiming pause(state, !measure_shutdown);
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shell.reset(); // Shutdown is synchronous.
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thread_host.reset();
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}
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FML_CHECK(!shell);
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}
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static void BM_ShellInitialization(benchmark::State& state) {
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while (state.KeepRunning()) {
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StartupAndShutdownShell(state, true, false);
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}
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}
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BENCHMARK(BM_ShellInitialization);
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static void BM_ShellShutdown(benchmark::State& state) {
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while (state.KeepRunning()) {
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StartupAndShutdownShell(state, false, true);
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}
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}
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BENCHMARK(BM_ShellShutdown);
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static void BM_ShellInitializationAndShutdown(benchmark::State& state) {
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while (state.KeepRunning()) {
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StartupAndShutdownShell(state, true, true);
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}
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}
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BENCHMARK(BM_ShellInitializationAndShutdown);
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} // namespace flutter
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