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// Copyright 2024 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_RESOURCE_ATTRIBUTION_CPU_MEASUREMENT_DATA_H_
#define COMPONENTS_PERFORMANCE_MANAGER_RESOURCE_ATTRIBUTION_CPU_MEASUREMENT_DATA_H_
#include <memory>
#include <optional>
#include "base/memory/scoped_refptr.h"
#include "base/time/time.h"
#include "base/values.h"
#include "components/performance_manager/graph/node_inline_data.h"
namespace resource_attribution {
class CPUMeasurementDelegate;
class ScopedCPUTimeResult;
// Holds a CPUMeasurementDelegate object to measure CPU usage and metadata
// about the measurements. A CPUMeasurementData will be created by
// CPUMeasurementMonitor for each ProcessNode being measured.
class CPUMeasurementData
: public performance_manager::SparseNodeInlineData<CPUMeasurementData> {
public:
explicit CPUMeasurementData(std::unique_ptr<CPUMeasurementDelegate> delegate);
~CPUMeasurementData();
// Move-only type.
CPUMeasurementData(const CPUMeasurementData&) = delete;
CPUMeasurementData& operator=(const CPUMeasurementData&) = delete;
CPUMeasurementData(CPUMeasurementData&&);
CPUMeasurementData& operator=(CPUMeasurementData&&);
CPUMeasurementDelegate& measurement_delegate() { return *delegate_; }
std::optional<base::TimeDelta> most_recent_measurement() const {
return most_recent_measurement_;
}
base::TimeTicks last_measurement_time() const {
return last_measurement_time_;
}
void SetMostRecentMeasurement(base::TimeDelta measurement,
base::TimeTicks measurement_time);
private:
std::unique_ptr<CPUMeasurementDelegate> delegate_;
std::optional<base::TimeDelta> most_recent_measurement_;
base::TimeTicks last_measurement_time_;
};
// Holds refcounted CPU measurement results.
class SharedCPUTimeResultData
: public performance_manager::NodeInlineData<SharedCPUTimeResultData> {
public:
SharedCPUTimeResultData();
~SharedCPUTimeResultData();
// Move-only type.
SharedCPUTimeResultData(const SharedCPUTimeResultData&) = delete;
SharedCPUTimeResultData& operator=(const SharedCPUTimeResultData&) = delete;
SharedCPUTimeResultData(SharedCPUTimeResultData&&);
SharedCPUTimeResultData& operator=(SharedCPUTimeResultData&&);
// Returns a description of the result held in `result_ptr` for
// NodeDataDescriber, or an empty dict if it's null.
base::Value::Dict Describe() const;
scoped_refptr<ScopedCPUTimeResult> result_ptr;
};
} // namespace resource_attribution
#endif // COMPONENTS_PERFORMANCE_MANAGER_RESOURCE_ATTRIBUTION_CPU_MEASUREMENT_DATA_H_
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