process_node_impl.h | Explore in Territory

// Copyright 2017 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_GRAPH_PROCESS_NODE_IMPL_H_
#define COMPONENTS_PERFORMANCE_MANAGER_GRAPH_PROCESS_NODE_IMPL_H_

#include <optional>
#include <string>

#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/process/process.h"
#include "base/process/process_handle.h"
#include "base/time/time.h"
#include "base/types/pass_key.h"
#include "components/performance_manager/decorators/process_priority_aggregator_data.h"
#include "components/performance_manager/freezing/frozen_data.h"
#include "components/performance_manager/graph/node_attached_data_storage.h"
#include "components/performance_manager/graph/node_base.h"
#include "components/performance_manager/graph/node_inline_data.h"
#include "components/performance_manager/graph/properties.h"
#include "components/performance_manager/public/browser_child_process_host_proxy.h"
#include "components/performance_manager/public/graph/process_node.h"
#include "components/performance_manager/public/mojom/coordination_unit.mojom.h"
#include "components/performance_manager/public/mojom/v8_contexts.mojom.h"
#include "components/performance_manager/public/render_process_host_proxy.h"
#include "components/performance_manager/resource_attribution/cpu_measurement_data.h"
#include "content/public/browser/background_tracing_manager.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "third_party/abseil-cpp/absl/types/variant.h"
#include "third_party/blink/public/common/tokens/tokens.h"

namespace performance_manager {

class FrameNodeImpl;
class FrozenFrameAggregator;
class ProcessNodeImpl;
class WorkerNodeImpl;

// Tag used to create a process node for the browser process.
struct BrowserProcessNodeTag { … };

// A process node follows the lifetime of a chrome process.
// It may reference zero or one processes at a time, but during its lifetime, it
// may reference more than one process. This can happen if the associated
// renderer crashes, and an associated frame is then reloaded or re-navigated.
// The state of the process node goes through:
// 1. Created, no PID.
// 2. Process started, have PID - in the case where the associated render
//    process fails to start, this state may not occur.
// 3. Process died or failed to start, have exit status.
// 4. Back to 2.
class ProcessNodeImpl
    : public PublicNodeImpl<ProcessNodeImpl, ProcessNode>,
      public TypedNodeBase<ProcessNodeImpl, ProcessNode, ProcessNodeObserver>,
      public mojom::ProcessCoordinationUnit,
      public SupportsNodeInlineData<ProcessPriorityAggregatorData,
                                    FrozenData,
                                    resource_attribution::CPUMeasurementData,
                                    // Keep this last to avoid merge conflicts.
                                    NodeAttachedDataStorage> { … };

}  // namespace performance_manager

#endif  // COMPONENTS_PERFORMANCE_MANAGER_GRAPH_PROCESS_NODE_IMPL_H_
chromium/components/performance_manager/graph/process_node_impl.h
