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75 lines
2.2 KiB
75 lines
2.2 KiB
/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License. */
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#pragma once
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#include <map>
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#include <memory>
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#include <vector>
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#include "paddle/fluid/framework/ir/graph.h"
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#include "paddle/fluid/framework/ir/node.h"
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namespace paddle {
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namespace framework {
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namespace ir {
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// Test if the graph contains circle.
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bool HasCircle(const Graph &graph);
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// Find All Circles for debugging,
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// store all subgraph in circles.
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bool FindCircleSubGraph(const Graph &graph,
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std::vector<std::vector<ir::Node *>> *circles);
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size_t GraphNum(const Graph &graph);
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// Topology Sort the operations in the graph from inputs to outputs.
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// `graph` cannot contain circle.
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std::vector<ir::Node *> TopologySortOperations(const Graph &graph);
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// Topological sort, but try to DFS.
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std::vector<ir::Node *> TopologyDfsSortOperations(const Graph &graph);
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// Different kinds to sort the operators in a graph to a sequence.
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enum class SortKind {
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// Topological Search
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TS = 0,
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// Topological and Depth First Search
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TDFS
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};
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// Several kinds of topological sort.
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std::vector<Node *> TopologyVarientSort(const Graph &graph, SortKind sort_kind);
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// Clean the nodes that doesn't connect to others.
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void CleanIndividualNodes(Graph *graph);
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// Build an adjacency list of operations for the `graph`.
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std::map<ir::Node *, std::unordered_set<ir::Node *>> BuildOperationAdjList(
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const Graph &graph);
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template <typename T>
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std::vector<T *> FilterByNodeWrapper(const Graph &graph) {
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std::vector<T *> ret;
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for (ir::Node *n : graph.Nodes()) {
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if (n->IsWrappedBy<T>()) ret.push_back(&n->Wrapper<T>());
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}
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return ret;
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}
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} // namespace ir
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} // namespace framework
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} // namespace paddle
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