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// Copyright 2020 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/execution_context/execution_context_registry_impl.h"
#include "base/check.h"
#include "base/memory/raw_ref.h"
#include "base/notreached.h"
#include "base/observer_list.h"
#include "components/performance_manager/execution_context/execution_context_impl.h"
#include "components/performance_manager/graph/frame_node_impl.h"
#include "components/performance_manager/graph/worker_node_impl.h"
#include "components/performance_manager/public/execution_context/execution_context.h"
#include "url/gurl.h"
namespace performance_manager {
namespace execution_context {
////////////////////////////////////////////////////////////////////////////////
// ExecutionContextRegistry
ExecutionContextRegistry::ExecutionContextRegistry() = default;
ExecutionContextRegistry::~ExecutionContextRegistry() = default;
// static
ExecutionContextRegistry* ExecutionContextRegistry::GetFromGraph(Graph* graph) {
return GraphRegisteredImpl<ExecutionContextRegistryImpl>::GetFromGraph(graph);
}
// static
const ExecutionContext*
ExecutionContextRegistry::GetExecutionContextForFrameNode(
const FrameNode* frame_node) {
auto* ec_registry = GetFromGraph(frame_node->GetGraph());
DCHECK(ec_registry);
return ec_registry->GetExecutionContextForFrameNodeImpl(frame_node);
}
// static
const ExecutionContext*
ExecutionContextRegistry::GetExecutionContextForWorkerNode(
const WorkerNode* worker_node) {
auto* ec_registry = GetFromGraph(worker_node->GetGraph());
DCHECK(ec_registry);
return ec_registry->GetExecutionContextForWorkerNodeImpl(worker_node);
}
////////////////////////////////////////////////////////////////////////////////
// ExecutionContextRegistryImpl
ExecutionContextRegistryImpl::ExecutionContextRegistryImpl() {
DETACH_FROM_SEQUENCE(sequence_checker_);
}
ExecutionContextRegistryImpl::~ExecutionContextRegistryImpl() = default;
void ExecutionContextRegistryImpl::AddObserver(
ExecutionContextObserver* observer) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
observers_.AddObserver(observer);
}
bool ExecutionContextRegistryImpl::HasObserver(
ExecutionContextObserver* observer) const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return observers_.HasObserver(observer);
}
void ExecutionContextRegistryImpl::RemoveObserver(
ExecutionContextObserver* observer) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DCHECK(observers_.HasObserver(observer));
observers_.RemoveObserver(observer);
}
const ExecutionContext*
ExecutionContextRegistryImpl::GetExecutionContextByToken(
const blink::ExecutionContextToken& token) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (token.value().is_empty())
return nullptr;
auto it = execution_contexts_.find(token);
if (it == execution_contexts_.end())
return nullptr;
return *it;
}
const FrameNode* ExecutionContextRegistryImpl::GetFrameNodeByFrameToken(
const blink::LocalFrameToken& token) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
auto* ec = GetExecutionContextByToken(token);
if (!ec)
return nullptr;
return ec->GetFrameNode();
}
const WorkerNode* ExecutionContextRegistryImpl::GetWorkerNodeByWorkerToken(
const blink::WorkerToken& token) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
auto* ec = GetExecutionContextByToken(blink::ExecutionContextToken(token));
if (!ec)
return nullptr;
return ec->GetWorkerNode();
}
const ExecutionContext*
ExecutionContextRegistryImpl::GetExecutionContextForFrameNodeImpl(
const FrameNode* frame_node) {
return &FrameExecutionContext::Get(FrameNodeImpl::FromNode(frame_node));
}
const ExecutionContext*
ExecutionContextRegistryImpl::GetExecutionContextForWorkerNodeImpl(
const WorkerNode* worker_node) {
return &WorkerExecutionContext::Get(WorkerNodeImpl::FromNode(worker_node));
}
void ExecutionContextRegistryImpl::SetUp(Graph* graph) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DCHECK(graph->HasOnlySystemNode());
graph->RegisterObject(this);
graph->AddFrameNodeObserver(this);
graph->AddWorkerNodeObserver(this);
}
void ExecutionContextRegistryImpl::TearDown(Graph* graph) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
graph->RemoveWorkerNodeObserver(this);
graph->RemoveFrameNodeObserver(this);
graph->UnregisterObject(this);
}
void ExecutionContextRegistryImpl::OnFrameNodeAdded(
const FrameNode* frame_node) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
auto* ec = GetExecutionContextForFrameNodeImpl(frame_node);
DCHECK(ec);
auto result = execution_contexts_.insert(ec);
DCHECK(result.second); // Inserted.
for (auto& observer : observers_)
observer.OnExecutionContextAdded(ec);
}
void ExecutionContextRegistryImpl::OnBeforeFrameNodeRemoved(
const FrameNode* frame_node) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
auto* ec = GetExecutionContextForFrameNodeImpl(frame_node);
DCHECK(ec);
for (auto& observer : observers_)
observer.OnBeforeExecutionContextRemoved(ec);
size_t erased = execution_contexts_.erase(ec);
DCHECK_EQ(1u, erased);
}
void ExecutionContextRegistryImpl::OnPriorityAndReasonChanged(
const FrameNode* frame_node,
const PriorityAndReason& previous_value) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
auto* ec = GetExecutionContextForFrameNodeImpl(frame_node);
DCHECK(ec);
for (auto& observer : observers_)
observer.OnPriorityAndReasonChanged(ec, previous_value);
}
void ExecutionContextRegistryImpl::OnWorkerNodeAdded(
const WorkerNode* worker_node) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
auto* ec = GetExecutionContextForWorkerNodeImpl(worker_node);
DCHECK(ec);
auto result = execution_contexts_.insert(ec);
DCHECK(result.second); // Inserted.
for (auto& observer : observers_)
observer.OnExecutionContextAdded(ec);
}
void ExecutionContextRegistryImpl::OnBeforeWorkerNodeRemoved(
const WorkerNode* worker_node) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
auto* ec = GetExecutionContextForWorkerNodeImpl(worker_node);
DCHECK(ec);
for (auto& observer : observers_)
observer.OnBeforeExecutionContextRemoved(ec);
size_t erased = execution_contexts_.erase(ec);
DCHECK_EQ(1u, erased);
}
void ExecutionContextRegistryImpl::OnPriorityAndReasonChanged(
const WorkerNode* worker_node,
const PriorityAndReason& previous_value) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
auto* ec = GetExecutionContextForWorkerNodeImpl(worker_node);
DCHECK(ec);
for (auto& observer : observers_)
observer.OnPriorityAndReasonChanged(ec, previous_value);
}
////////////////////////////////////////////////////////////////////////////////
// ExecutionContextRegistryImpl::ExecutionContextHash
size_t ExecutionContextRegistryImpl::ExecutionContextHash::operator()(
const blink::ExecutionContextToken& token) const {
return base::UnguessableTokenHash()(token.value());
}
size_t ExecutionContextRegistryImpl::ExecutionContextHash::operator()(
const ExecutionContext* ec) const {
return base::UnguessableTokenHash()(ec->GetToken().value());
}
////////////////////////////////////////////////////////////////////////////////
// ExecutionContextRegistryImpl::ExecutionContextKeyEqual
bool ExecutionContextRegistryImpl::ExecutionContextKeyEqual::operator()(
const ExecutionContext* ec1,
const ExecutionContext* ec2) const {
return ec1->GetToken() == ec2->GetToken();
}
bool ExecutionContextRegistryImpl::ExecutionContextKeyEqual::operator()(
const ExecutionContext* ec,
const blink::ExecutionContextToken& token) const {
return ec->GetToken() == token;
}
bool ExecutionContextRegistryImpl::ExecutionContextKeyEqual::operator()(
const blink::ExecutionContextToken& token,
const ExecutionContext* ec) const {
return token == ec->GetToken();
}
} // namespace execution_context
} // namespace performance_manager
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