chromium/components/performance_manager/resource_attribution/cpu_measurement_monitor.h

// Copyright 2023 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_MONITOR_H_
#define COMPONENTS_PERFORMANCE_MANAGER_RESOURCE_ATTRIBUTION_CPU_MEASUREMENT_MONITOR_H_

#include <map>
#include <optional>
#include <vector>

#include "base/functional/callback_forward.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_refptr.h"
#include "base/sequence_checker.h"
#include "base/values.h"
#include "components/performance_manager/public/graph/frame_node.h"
#include "components/performance_manager/public/graph/node_data_describer.h"
#include "components/performance_manager/public/graph/page_node.h"
#include "components/performance_manager/public/graph/process_node.h"
#include "components/performance_manager/public/graph/worker_node.h"
#include "components/performance_manager/public/resource_attribution/attribution_helpers.h"
#include "components/performance_manager/public/resource_attribution/cpu_measurement_delegate.h"
#include "components/performance_manager/public/resource_attribution/origin_in_browsing_instance_context.h"
#include "components/performance_manager/public/resource_attribution/query_results.h"
#include "components/performance_manager/public/resource_attribution/resource_contexts.h"
#include "components/performance_manager/resource_attribution/graph_change.h"
#include "components/performance_manager/resource_attribution/performance_manager_aliases.h"
#include "components/performance_manager/resource_attribution/query_params.h"

namespace resource_attribution {

// Periodically collect CPU usage from process nodes.
//
// Note: this can't store measurements in NodeAttachedData because the final CPU
// measurement for a node may not arrive until after it's removed from the
// graph. So this is not a decorator as defined in
// components/performance_manager/README.md
class CPUMeasurementMonitor
    : public FrameNode::ObserverDefaultImpl,
      public PageNode::ObserverDefaultImpl,
      public ProcessNode::ObserverDefaultImpl,
      public WorkerNode::ObserverDefaultImpl,
      public performance_manager::NodeDataDescriberDefaultImpl { … };

}  // namespace resource_attribution

#endif  // COMPONENTS_PERFORMANCE_MANAGER_RESOURCE_ATTRIBUTION_CPU_MEASUREMENT_MONITOR_H_