chromium/components/performance_manager/graph/node_base.h

// 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_NODE_BASE_H_
#define COMPONENTS_PERFORMANCE_MANAGER_GRAPH_NODE_BASE_H_

#include <stdint.h>

#include "base/check_op.h"
#include "base/memory/raw_ptr.h"
#include "base/sequence_checker.h"
#include "components/performance_manager/graph/graph_impl.h"
#include "components/performance_manager/graph/properties.h"
#include "components/performance_manager/public/graph/node_state.h"
#include "components/performance_manager/public/graph/node_type.h"

namespace performance_manager {

class Node;

// NodeBase implements shared functionality among different types of graph
// nodes. A specific type of graph node will derive from this class and can
// override shared functionality when needed.
// All node classes allow construction on one sequence and subsequent use from
// another sequence.
// All methods not documented otherwise are single-threaded.
class NodeBase { … };

// Helper for implementing the Node parent of a PublicNodeClass.
template <class NodeImplClass, class PublicNodeClass>
class PublicNodeImpl : public PublicNodeClass { … };

template <class NodeImplClass, class NodeClass, class NodeObserverClass>
class TypedNodeBase : public NodeBase { … };

}  // namespace performance_manager

#endif  // COMPONENTS_PERFORMANCE_MANAGER_GRAPH_NODE_BASE_H_