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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "components/scheduler/renderer/renderer_scheduler.h" | |
| 6 | |
| 7 #include "base/command_line.h" | |
| 8 #include "base/feature_list.h" | |
| 9 #include "base/memory/ptr_util.h" | |
| 10 #include "base/message_loop/message_loop.h" | |
| 11 #include "base/metrics/field_trial.h" | |
| 12 #include "base/time/default_tick_clock.h" | |
| 13 #include "base/trace_event/trace_event.h" | |
| 14 #include "base/trace_event/trace_event_impl.h" | |
| 15 #include "components/scheduler/child/scheduler_tqm_delegate_impl.h" | |
| 16 #include "components/scheduler/common/scheduler_switches.h" | |
| 17 #include "components/scheduler/renderer/renderer_scheduler_impl.h" | |
| 18 | |
| 19 namespace scheduler { | |
| 20 namespace { | |
| 21 const base::Feature kExpensiveTaskBlockingPolicyFeature{ | |
| 22 "SchedulerExpensiveTaskBlocking", base::FEATURE_ENABLED_BY_DEFAULT}; | |
| 23 } | |
| 24 | |
| 25 RendererScheduler::RendererScheduler() { | |
| 26 } | |
| 27 | |
| 28 RendererScheduler::~RendererScheduler() { | |
| 29 } | |
| 30 | |
| 31 RendererScheduler::RAILModeObserver::~RAILModeObserver() = default; | |
| 32 | |
| 33 // static | |
| 34 std::unique_ptr<RendererScheduler> RendererScheduler::Create() { | |
| 35 // Ensure worker.scheduler, worker.scheduler.debug and | |
| 36 // renderer.scheduler.debug appear as an option in about://tracing | |
| 37 base::trace_event::TraceLog::GetCategoryGroupEnabled( | |
| 38 TRACE_DISABLED_BY_DEFAULT("worker.scheduler")); | |
| 39 base::trace_event::TraceLog::GetCategoryGroupEnabled( | |
| 40 TRACE_DISABLED_BY_DEFAULT("worker.scheduler.debug")); | |
| 41 base::trace_event::TraceLog::GetCategoryGroupEnabled( | |
| 42 TRACE_DISABLED_BY_DEFAULT("renderer.scheduler.debug")); | |
| 43 | |
| 44 base::MessageLoop* message_loop = base::MessageLoop::current(); | |
| 45 std::unique_ptr<RendererSchedulerImpl> scheduler( | |
| 46 new RendererSchedulerImpl(SchedulerTqmDelegateImpl::Create( | |
| 47 message_loop, base::WrapUnique(new base::DefaultTickClock())))); | |
| 48 | |
| 49 // Runtime features are not currently available in html_viewer. | |
| 50 if (base::FeatureList::GetInstance()) { | |
| 51 bool blocking_allowed = | |
| 52 base::FeatureList::IsEnabled(kExpensiveTaskBlockingPolicyFeature); | |
| 53 // Also check the old style FieldTrial API for perf waterfall compatibility. | |
| 54 const std::string group_name = base::FieldTrialList::FindFullName( | |
| 55 kExpensiveTaskBlockingPolicyFeature.name); | |
| 56 blocking_allowed |= base::StartsWith(group_name, "Enabled", | |
| 57 base::CompareCase::INSENSITIVE_ASCII); | |
| 58 scheduler->SetExpensiveTaskBlockingAllowed(blocking_allowed); | |
| 59 } | |
| 60 return base::WrapUnique<RendererScheduler>(scheduler.release()); | |
| 61 } | |
| 62 | |
| 63 // static | |
| 64 const char* RendererScheduler::InputEventStateToString( | |
| 65 InputEventState input_event_state) { | |
| 66 switch (input_event_state) { | |
| 67 case InputEventState::EVENT_CONSUMED_BY_COMPOSITOR: | |
| 68 return "event_consumed_by_compositor"; | |
| 69 case InputEventState::EVENT_FORWARDED_TO_MAIN_THREAD: | |
| 70 return "event_forwarded_to_main_thread"; | |
| 71 default: | |
| 72 NOTREACHED(); | |
| 73 return nullptr; | |
| 74 } | |
| 75 } | |
| 76 | |
| 77 } // namespace scheduler | |
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Chromium Code Reviews
Issue 2118903002:
scheduler: Move the Blink scheduler into Blink (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master