/* Copyright 2015 The TensorFlow Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
    http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.*/
// Modification Copyright (C) 2018-2026 Intel Corporation

syntax = "proto3";

package tensorflow;

import "ov_tensorflow/function.proto";
import "ov_tensorflow/node_def.proto";
import "ov_tensorflow/versions.proto";

option cc_enable_arenas = true;
option java_outer_classname = "GraphProtos";
option java_multiple_files = true;
option java_package = "org.tensorflow.framework";
option go_package = "github.com/tensorflow/tensorflow/tensorflow/go/core/framework/graph_go_proto";

// Represents the graph of operations
message GraphDef {
  repeated NodeDef node = 1;

  // Compatibility versions of the graph.  See core/public/version.h for version
  // history.  The GraphDef version is distinct from the TensorFlow version, and
  // each release of TensorFlow will support a range of GraphDef versions.
  VersionDef versions = 4;

  // Deprecated single version field; use versions above instead.  Since all
  // GraphDef changes before "versions" was introduced were forward
  // compatible, this field is entirely ignored.
  int32 version = 3 [deprecated = true];

  // "library" provides user-defined functions.
  //
  // Naming:
  //   * library.function.name are in a flat namespace.
  //     NOTE: We may need to change it to be hierarchical to support
  //     different orgs. E.g.,
  //     { "/google/nn", { ... }},
  //     { "/google/vision", { ... }}
  //     { "/org_foo/module_bar", { ... }}
  //     map<string, FunctionDefLib> named_lib;
  //   * If node[i].op is the name of one function in "library",
  //     node[i] is deemed as a function call. Otherwise, node[i].op
  //     must be a primitive operation supported by the runtime.
  //
  //
  // Function call semantics:
  //
  //   * The callee may start execution as soon as some of its inputs
  //     are ready. The caller may want to use Tuple() mechanism to
  //     ensure all inputs are ready in the same time.
  //
  //   * The consumer of return values may start executing as soon as
  //     the return values the consumer depends on are ready.  The
  //     consumer may want to use Tuple() mechanism to ensure the
  //     consumer does not start until all return values of the callee
  //     function are ready.
  FunctionDefLibrary library = 2;
}
