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// Copyright 2018 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_SYSTEM_NODE_IMPL_H_
#define COMPONENTS_PERFORMANCE_MANAGER_GRAPH_SYSTEM_NODE_IMPL_H_
#include <cstdint>
#include <memory>
#include "base/memory/memory_pressure_listener.h"
#include "base/memory/weak_ptr.h"
#include "base/process/process_handle.h"
#include "components/performance_manager/graph/node_base.h"
#include "components/performance_manager/graph/properties.h"
#include "components/performance_manager/public/graph/system_node.h"
namespace performance_manager {
class SystemNodeImpl
: public PublicNodeImpl<SystemNodeImpl, SystemNode>,
public TypedNodeBase<SystemNodeImpl, SystemNode, SystemNodeObserver> {
public:
using TypedNodeBase<SystemNodeImpl, SystemNode, SystemNodeObserver>::FromNode;
SystemNodeImpl();
SystemNodeImpl(const SystemNodeImpl&) = delete;
SystemNodeImpl& operator=(const SystemNodeImpl&) = delete;
~SystemNodeImpl() override;
// Implements NodeBase:
void CleanUpNodeState() override;
// This should be called after refreshing the memory usage data of the process
// nodes.
void OnProcessMemoryMetricsAvailable();
void OnMemoryPressureForTesting(MemoryPressureLevel new_level) {
OnMemoryPressure(new_level);
}
base::WeakPtr<SystemNodeImpl> GetWeakPtr() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return weak_factory_.GetWeakPtr();
}
private:
void OnMemoryPressure(MemoryPressureLevel new_level);
// The memory pressure listener.
std::unique_ptr<base::MemoryPressureListener> memory_pressure_listener_;
base::WeakPtrFactory<SystemNodeImpl> weak_factory_
GUARDED_BY_CONTEXT(sequence_checker_){this};
};
} // namespace performance_manager
#endif // COMPONENTS_PERFORMANCE_MANAGER_GRAPH_SYSTEM_NODE_IMPL_H_
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