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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/performance_manager/embedder/performance_manager_lifetime.h"
#include "base/functional/bind.h"
#include "base/no_destructor.h"
#include "base/notreached.h"
#include "components/performance_manager/decorators/frame_visibility_decorator.h"
#include "components/performance_manager/decorators/page_load_tracker_decorator.h"
#include "components/performance_manager/embedder/graph_features.h"
#include "components/performance_manager/execution_context/execution_context_registry_impl.h"
#include "components/performance_manager/execution_context_priority/frame_audible_voter.h"
#include "components/performance_manager/execution_context_priority/frame_capturing_media_stream_voter.h"
#include "components/performance_manager/execution_context_priority/frame_visibility_voter.h"
#include "components/performance_manager/execution_context_priority/inherit_client_priority_voter.h"
#include "components/performance_manager/execution_context_priority/loading_page_voter.h"
#include "components/performance_manager/graph/frame_node_impl_describer.h"
#include "components/performance_manager/graph/page_node_impl_describer.h"
#include "components/performance_manager/graph/process_node_impl_describer.h"
#include "components/performance_manager/graph/worker_node_impl_describer.h"
#include "components/performance_manager/performance_manager_impl.h"
#include "components/performance_manager/public/decorators/page_live_state_decorator.h"
#include "components/performance_manager/public/execution_context_priority/priority_voting_system.h"
#include "components/performance_manager/public/graph/graph.h"
#include "components/performance_manager/v8_memory/v8_context_tracker.h"
#if BUILDFLAG(IS_MAC)
#include "components/performance_manager/execution_context_priority/inherit_parent_priority_voter.h"
#endif // BUILDFLAG(IS_MAC)
namespace performance_manager {
namespace {
GraphCreatedCallback* GetAdditionalGraphCreatedCallback() {
static base::NoDestructor<GraphCreatedCallback>
additional_graph_created_callback;
return additional_graph_created_callback.get();
}
// Adds the default set of execution context voters.
void AddVoters(GraphImpl* graph) {
if (auto* priority_voting_system =
graph->GetRegisteredObjectAs<
execution_context_priority::PriorityVotingSystem>()) {
// When a frame is visible, casts either a USER_BLOCKING or USER_VISIBLE
// vote, depending on if the frame is important.
priority_voting_system
->AddPriorityVoter<execution_context_priority::FrameVisibilityVoter>();
// Casts a USER_BLOCKING vote when a frame is audible.
priority_voting_system
->AddPriorityVoter<execution_context_priority::FrameAudibleVoter>();
// Casts a USER_BLOCKING vote when a frame is capturing a media stream.
priority_voting_system->AddPriorityVoter<
execution_context_priority::FrameCapturingMediaStreamVoter>();
// Casts a vote for each child worker with the client's priority.
priority_voting_system->AddPriorityVoter<
execution_context_priority::InheritClientPriorityVoter>();
// Casts a USER_VISIBLE vote for all frames in a loading page.
if (base::FeatureList::IsEnabled(features::kPMLoadingPageVoter)) {
priority_voting_system
->AddPriorityVoter<execution_context_priority::LoadingPageVoter>();
}
#if BUILDFLAG(IS_MAC)
// Casts a vote for each child frame with the parent's priority.
if (features::kInheritParentPriority.Get()) {
priority_voting_system->AddPriorityVoter<
execution_context_priority::InheritParentPriorityVoter>();
}
#endif
}
}
std::optional<GraphFeatures>* GetGraphFeaturesOverride() {
static std::optional<GraphFeatures> graph_features_override;
return &graph_features_override;
}
void OnGraphCreated(const GraphFeatures& graph_features,
GraphCreatedCallback external_graph_created_callback) {
GraphImpl* graph = PerformanceManagerImpl::GetGraphImpl();
auto graph_features_override = *GetGraphFeaturesOverride();
const GraphFeatures& configured_features =
graph_features_override ? *graph_features_override : graph_features;
// Install required features on the graph.
configured_features.ConfigureGraph(graph);
AddVoters(graph);
// Run graph created callbacks.
std::move(external_graph_created_callback).Run(graph);
if (*GetAdditionalGraphCreatedCallback())
std::move(*GetAdditionalGraphCreatedCallback()).Run(graph);
}
} // namespace
PerformanceManagerLifetime::PerformanceManagerLifetime(
const GraphFeatures& graph_features,
GraphCreatedCallback graph_created_callback) {
performance_manager_ = PerformanceManagerImpl::Create();
OnGraphCreated(graph_features, std::move(graph_created_callback));
performance_manager_registry_ =
performance_manager::PerformanceManagerRegistry::Create();
}
PerformanceManagerLifetime::~PerformanceManagerLifetime() {
// There may still be worker hosts, WebContents and RenderProcessHosts with
// attached user data, retaining WorkerNodes, PageNodes, FrameNodes and
// ProcessNodes. Tear down the registry to release these nodes.
performance_manager_registry_->TearDown();
performance_manager_registry_.reset();
performance_manager::DestroyPerformanceManager(
std::move(performance_manager_));
}
// static
void PerformanceManagerLifetime::SetAdditionalGraphCreatedCallbackForTesting(
GraphCreatedCallback graph_created_callback) {
*GetAdditionalGraphCreatedCallback() = std::move(graph_created_callback);
}
// static
void PerformanceManagerLifetime::SetGraphFeaturesOverrideForTesting(
const GraphFeatures& graph_features_override) {
*GetGraphFeaturesOverride() = graph_features_override;
}
void DestroyPerformanceManager(std::unique_ptr<PerformanceManager> instance) {
PerformanceManagerImpl::Destroy(std::move(instance));
}
} // namespace performance_manager
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