f717c7e322
The recent addition of OnBeforeFrameNodeAdded and OnFrameNodeRemoved observer methods render this class superfluous. Change-Id: I0df4de14f0982a097a47c6fbd29999fa6643a4e2 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6089681 Reviewed-by: Joe Mason <joenotcharles@google.com> Commit-Queue: Patrick Monette <pmonette@chromium.org> Cr-Commit-Position: refs/heads/main@{#1395738}
60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
// Copyright 2019 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef COMPONENTS_PERFORMANCE_MANAGER_PUBLIC_GRAPH_NODE_H_
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#define COMPONENTS_PERFORMANCE_MANAGER_PUBLIC_GRAPH_NODE_H_
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#include <cstdint>
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#include "base/check_op.h"
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#include "components/performance_manager/public/graph/node_state.h"
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#include "components/performance_manager/public/graph/node_type.h"
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namespace performance_manager {
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class Graph;
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// Interface that all nodes must implement.
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class Node {
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public:
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Node();
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Node(const Node&) = delete;
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Node& operator=(const Node&) = delete;
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virtual ~Node();
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// Returns the type of this node.
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virtual NodeTypeEnum GetNodeType() const = 0;
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// Returns the graph to which this node belongs.
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virtual Graph* GetGraph() const = 0;
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// The following functions are implementation detail and should not need to be
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// used by external clients. They provide the ability to safely downcast to
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// the underlying implementation.
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virtual uintptr_t GetImplType() const = 0;
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virtual const void* GetImpl() const = 0;
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};
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template <class PublicNodeClass>
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class TypedNode : public Node {
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public:
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TypedNode() = default;
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~TypedNode() override = default;
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NodeTypeEnum GetNodeType() const override { return PublicNodeClass::Type(); }
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// Helper function for casting from the generic Node type to its underlying
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// public node type. This CHECKs that the cast is valid.
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static const PublicNodeClass* FromNode(const Node* node) {
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CHECK_EQ(node->GetNodeType(), PublicNodeClass::Type());
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return reinterpret_cast<const PublicNodeClass*>(node);
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}
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};
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} // namespace performance_manager
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#endif // COMPONENTS_PERFORMANCE_MANAGER_PUBLIC_GRAPH_NODE_H_
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