1 | /* Copyright 2019 The TensorFlow Authors. All Rights Reserved. |
---|---|
2 | |
3 | Licensed under the Apache License, Version 2.0 (the "License"); |
4 | you may not use this file except in compliance with the License. |
5 | You may obtain a copy of the License at |
6 | |
7 | http://www.apache.org/licenses/LICENSE-2.0 |
8 | |
9 | Unless required by applicable law or agreed to in writing, software |
10 | distributed under the License is distributed on an "AS IS" BASIS, |
11 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
12 | See the License for the specific language governing permissions and |
13 | limitations under the License. |
14 | ==============================================================================*/ |
15 | |
16 | #include <string> |
17 | |
18 | #include "pybind11/pybind11.h" |
19 | #include "tensorflow/core/common_runtime/device.h" |
20 | #include "tensorflow/core/common_runtime/device_factory.h" |
21 | #include "tensorflow/core/framework/device_attributes.pb.h" |
22 | #include "tensorflow/core/lib/core/errors.h" |
23 | #include "tensorflow/core/protobuf/config.pb.h" |
24 | #include "tensorflow/core/public/session_options.h" |
25 | #include "tensorflow/python/lib/core/pybind11_proto.h" |
26 | #include "tensorflow/python/lib/core/pybind11_status.h" |
27 | |
28 | namespace py = ::pybind11; |
29 | |
30 | PYBIND11_MODULE(_pywrap_device_lib, m) { |
31 | m.def("list_devices", [](py::object serialized_config) { |
32 | tensorflow::ConfigProto config; |
33 | if (!serialized_config.is_none()) { |
34 | config.ParseFromString( |
35 | static_cast<std::string>(serialized_config.cast<py::bytes>())); |
36 | } |
37 | |
38 | tensorflow::SessionOptions options; |
39 | options.config = config; |
40 | std::vector<std::unique_ptr<tensorflow::Device>> devices; |
41 | tensorflow::MaybeRaiseFromStatus(tensorflow::DeviceFactory::AddDevices( |
42 | options, /*name_prefix=*/"", &devices)); |
43 | |
44 | py::list results; |
45 | std::string serialized_attr; |
46 | for (const auto& device : devices) { |
47 | if (!device->attributes().SerializeToString(&serialized_attr)) { |
48 | tensorflow::MaybeRaiseFromStatus(tensorflow::errors::Internal( |
49 | "Could not serialize DeviceAttributes to bytes")); |
50 | } |
51 | |
52 | // The default type caster for std::string assumes its contents |
53 | // is UTF8-encoded. |
54 | results.append(py::bytes(serialized_attr)); |
55 | } |
56 | return results; |
57 | }); |
58 | } |
59 |