48 lines
1.8 KiB
C++
48 lines
1.8 KiB
C++
/* Copyright 2018 The TensorFlow 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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==============================================================================*/
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#ifndef TENSORFLOW_COMPILER_TF2XLA_SIDE_EFFECT_UTIL_H_
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#define TENSORFLOW_COMPILER_TF2XLA_SIDE_EFFECT_UTIL_H_
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#include <vector>
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#include "tensorflow/core/graph/graph.h"
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namespace tensorflow {
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// Side-effecting nodes will have this attribute set. Its value is the list of
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// node names which this node has side-effect dependencies on.
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//
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// Nodes like HostCompute, SendToHost, RecvFromHost always have this attribute,
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// because they always have side-effect.
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// If and While nodes may or may not have this attribute, depending on whether
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// their bodies have side-effecting nodes.
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extern const char kXlaTokenInputNodesAttrName[];
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// This node name is used in kXlaTokenInputNodesAttrName attr to signal that a
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// node has side-effect dependency on current graph's token input.
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extern const char kXlaTokenArgNodeName[];
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// Calculates side-effect dependencies for the graph's token output.
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// Returns a set of node names representing these dependencies.
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std::set<std::string> CalculateTokenInputsForOutputToken(const Graph& g);
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// Returns whether a graph contains side-effecting nodes.
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bool HasSideEffectingNodes(const Graph& g);
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} // namespace tensorflow
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#endif // TENSORFLOW_COMPILER_TF2XLA_SIDE_EFFECT_UTIL_H_
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