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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_FRAME_PERFORMANCE_MONITOR_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_FRAME_PERFORMANCE_MONITOR_H_
#include "base/macros.h"
#include "base/task/sequence_manager/task_time_observer.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/timing/sub_task_attribution.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource.h"
#include "third_party/blink/renderer/platform/scheduler/public/thread.h"
#include "third_party/blink/renderer/platform/wtf/text/atomic_string.h"
#include "v8/include/v8.h"
namespace blink {
namespace probe {
class CallFunction;
class ExecuteScript;
class RecalculateStyle;
class UpdateLayout;
class UserCallback;
class V8Compile;
} // namespace probe
class DOMWindow;
class Document;
class ExecutionContext;
class WindowPerformance;
class SourceLocation;
// Performance monitor for Web Performance APIs and logging.
// The monitor is maintained per local root.
// Long task notifications are delivered to observing WindowPerformance*
// instances (in the local frame tree) in m_webPerformanceObservers.
class CORE_EXPORT PerformanceMonitor final
: public GarbageCollectedFinalized<PerformanceMonitor>,
public base::sequence_manager::TaskTimeObserver {
public:
enum Violation : size_t {
kLongTask,
kLongLayout,
kBlockedEvent,
kBlockedParser,
kDiscouragedAPIUse,
kHandler,
kRecurringHandler,
kAfterLast
};
class CORE_EXPORT Client : public GarbageCollectedMixin {
public:
virtual void ReportLongTask(
base::TimeTicks start_time,
base::TimeTicks end_time,
ExecutionContext* task_context,
bool has_multiple_contexts,
const SubTaskAttribution::EntriesVector& sub_task_attributions) {}
virtual void ReportLongLayout(base::TimeDelta duration) {}
virtual void ReportGenericViolation(Violation,
const String& text,
base::TimeDelta time,
SourceLocation*) {}
void Trace(blink::Visitor* visitor) override {}
};
static void ReportGenericViolation(ExecutionContext*,
Violation,
const String& text,
base::TimeDelta time,
std::unique_ptr<SourceLocation>);
static base::TimeDelta Threshold(ExecutionContext*, Violation);
void BypassLongCompileThresholdOnceForTesting();
// Instrumenting methods.
void Will(const probe::RecalculateStyle&);
void Did(const probe::RecalculateStyle&);
void Will(const probe::UpdateLayout&);
void Did(const probe::UpdateLayout&);
void Will(const probe::ExecuteScript&);
void Did(const probe::ExecuteScript&);
void Will(const probe::CallFunction&);
void Did(const probe::CallFunction&);
void Will(const probe::UserCallback&);
void Did(const probe::UserCallback&);
void Will(const probe::V8Compile&);
void Did(const probe::V8Compile&);
void DomContentLoadedEventFired(LocalFrame*);
void DocumentWriteFetchScript(Document*);
// Direct API for core.
void Subscribe(Violation, base::TimeDelta threshold, Client*);
void UnsubscribeAll(Client*);
void Shutdown();
explicit PerformanceMonitor(LocalFrame*);
~PerformanceMonitor() override;
virtual void Trace(blink::Visitor*);
private:
friend class PerformanceMonitorTest;
friend class WindowPerformanceTest;
static PerformanceMonitor* Monitor(const ExecutionContext*);
static PerformanceMonitor* InstrumentingMonitor(const ExecutionContext*);
void UpdateInstrumentation();
void InnerReportGenericViolation(ExecutionContext*,
Violation,
const String& text,
base::TimeDelta time,
std::unique_ptr<SourceLocation>);
// TaskTimeObserver implementation
void WillProcessTask(base::TimeTicks start_time) override;
void DidProcessTask(base::TimeTicks start_time,
base::TimeTicks end_time) override;
void WillExecuteScript(ExecutionContext*);
void DidExecuteScript();
void UpdateTaskAttribution(ExecutionContext*);
void UpdateTaskShouldBeReported(LocalFrame*);
std::pair<String, DOMWindow*> SanitizedAttribution(
const HeapHashSet<Member<Frame>>& frame_contexts,
Frame* observer_frame);
bool enabled_ = false;
base::TimeDelta per_task_style_and_layout_time_;
unsigned script_depth_ = 0;
unsigned layout_depth_ = 0;
unsigned user_callback_depth_ = 0;
const void* user_callback_;
base::TimeTicks v8_compile_start_time_;
SubTaskAttribution::EntriesVector sub_task_attributions_;
base::TimeDelta thresholds_[kAfterLast];
Member<LocalFrame> local_root_;
Member<ExecutionContext> task_execution_context_;
bool task_has_multiple_contexts_ = false;
bool task_should_be_reported_ = false;
using ClientThresholds = HeapHashMap<WeakMember<Client>, base::TimeDelta>;
HeapHashMap<Violation,
Member<ClientThresholds>,
typename DefaultHash<size_t>::Hash,
WTF::UnsignedWithZeroKeyHashTraits<size_t>>
subscriptions_;
bool bypass_long_compile_threshold_ = false;
DISALLOW_COPY_AND_ASSIGN(PerformanceMonitor);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_FRAME_PERFORMANCE_MONITOR_H_
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