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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.
#ifndef COMPONENTS_PERFORMANCE_MANAGER_V8_MEMORY_WEB_MEMORY_IMPL_H_
#define COMPONENTS_PERFORMANCE_MANAGER_V8_MEMORY_WEB_MEMORY_IMPL_H_
#include <memory>
#include "base/functional/callback.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "components/performance_manager/public/mojom/web_memory.mojom.h"
#include "components/performance_manager/public/v8_memory/v8_detailed_memory.h"
#include "components/performance_manager/public/v8_memory/web_memory.h"
#include "third_party/blink/public/common/tokens/tokens.h"
namespace performance_manager {
class FrameNode;
class ProcessNode;
namespace v8_memory {
// A helper class for implementing WebMeasureMemory(). This manages a request
// object that sends a V8 detailed memory request to the renderer, and formats
// the result into a mojom::WebMemoryMeasurement.
class WebMemoryMeasurer {
public:
using MeasurementCallback =
base::OnceCallback<void(mojom::WebMemoryMeasurementPtr)>;
// Implements WebMeasureMemory (from public/v8_memory/web_memory.h) by
// instantiating a WebMemoryMeasurer.
static void MeasureMemory(mojom::WebMemoryMeasurement::Mode mode,
MeasurementCallback callback,
const FrameNode* frame_node);
~WebMemoryMeasurer();
WebMemoryMeasurer(const WebMemoryMeasurer& other) = delete;
WebMemoryMeasurer& operator=(const WebMemoryMeasurer& other) = delete;
V8DetailedMemoryRequestOneShot* request() const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return request_.get();
}
// A callback for V8DetailedMemoryRequestOneShot.
void MeasurementComplete(const ProcessNode*,
const V8DetailedMemoryProcessData*);
private:
friend class WebMemoryImplTest;
WebMemoryMeasurer(const blink::LocalFrameToken&,
V8DetailedMemoryRequest::MeasurementMode,
MeasurementCallback);
blink::LocalFrameToken frame_token_;
MeasurementCallback callback_;
std::unique_ptr<V8DetailedMemoryRequestOneShot> request_
GUARDED_BY_CONTEXT(sequence_checker_);
SEQUENCE_CHECKER(sequence_checker_);
};
// The default implementation of WebMeasureMemorySecurityChecker.
class WebMeasureMemorySecurityCheckerImpl
: public WebMeasureMemorySecurityChecker {
public:
WebMeasureMemorySecurityCheckerImpl() = default;
~WebMeasureMemorySecurityCheckerImpl() override = default;
bool IsMeasureMemoryAllowed(const FrameNode* frame) const override;
};
} // namespace v8_memory
} // namespace performance_manager
#endif // COMPONENTS_PERFORMANCE_MANAGER_V8_MEMORY_WEB_MEMORY_IMPL_H_
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