1/* Copyright 2015 The TensorFlow Authors. All Rights Reserved.
2
3Licensed under the Apache License, Version 2.0 (the "License");
4you may not use this file except in compliance with the License.
5You may obtain a copy of the License at
6
7 http://www.apache.org/licenses/LICENSE-2.0
8
9Unless required by applicable law or agreed to in writing, software
10distributed under the License is distributed on an "AS IS" BASIS,
11WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12See the License for the specific language governing permissions and
13limitations under the License.
14==============================================================================*/
15
16#include "tensorflow/core/public/session.h"
17
18#include <string>
19
20#include "tensorflow/core/common_runtime/session_factory.h"
21#include "tensorflow/core/lib/core/errors.h"
22#include "tensorflow/core/lib/monitoring/gauge.h"
23#include "tensorflow/core/platform/logging.h"
24
25namespace tensorflow {
26namespace {
27
28auto* session_created = monitoring::Gauge<bool, 0>::New(
29 "/tensorflow/core/session_created", "True if a session was created.");
30
31} // namespace
32
33Session::Session() {}
34
35Session::~Session() {}
36
37Status Session::Run(const RunOptions& run_options,
38 const std::vector<std::pair<string, Tensor> >& inputs,
39 const std::vector<string>& output_tensor_names,
40 const std::vector<string>& target_tensor_names,
41 std::vector<Tensor>* outputs, RunMetadata* run_metadata) {
42 return errors::Unimplemented(
43 "Run with options is not supported for this session.");
44}
45
46Status Session::PRunSetup(const std::vector<string>& input_names,
47 const std::vector<string>& output_names,
48 const std::vector<string>& target_nodes,
49 string* handle) {
50 return errors::Unimplemented(
51 "Partial run is not supported for this session.");
52}
53
54Status Session::PRun(const string& handle,
55 const std::vector<std::pair<string, Tensor> >& inputs,
56 const std::vector<string>& output_names,
57 std::vector<Tensor>* outputs) {
58 return errors::Unimplemented(
59 "Partial run is not supported for this session.");
60}
61
62Session* NewSession(const SessionOptions& options) {
63 // Starts exporting metrics through a platform-specific monitoring API (if
64 // provided). For builds using "tensorflow/tsl/platform/default", this is
65 // currently a no-op.
66 session_created->GetCell()->Set(true);
67 Session* out_session;
68 Status s = NewSession(options, &out_session);
69 if (!s.ok()) {
70 LOG(ERROR) << "Failed to create session: " << s;
71 return nullptr;
72 }
73 return out_session;
74}
75
76Status NewSession(const SessionOptions& options, Session** out_session) {
77 SessionFactory* factory;
78 Status s = SessionFactory::GetFactory(options, &factory);
79 if (!s.ok()) {
80 *out_session = nullptr;
81 LOG(ERROR) << "Failed to get session factory: " << s;
82 return s;
83 }
84 // Starts exporting metrics through a platform-specific monitoring API (if
85 // provided). For builds using "tensorflow/tsl/platform/default", this is
86 // currently a no-op.
87 session_created->GetCell()->Set(true);
88 s = factory->NewSession(options, out_session);
89 if (!s.ok()) {
90 *out_session = nullptr;
91 LOG(ERROR) << "Failed to create session: " << s;
92 }
93 return s;
94}
95
96Status Reset(const SessionOptions& options,
97 const std::vector<string>& containers) {
98 SessionFactory* factory;
99 TF_RETURN_IF_ERROR(SessionFactory::GetFactory(options, &factory));
100 return factory->Reset(options, containers);
101}
102
103} // namespace tensorflow
104