1 | /* Copyright 2020 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 "tensorflow/core/tpu/tpu_executor_api.h" |
17 | |
18 | namespace tensorflow { |
19 | namespace tpu { |
20 | |
21 | TfTpu_ExecutorApiFn* ExecutorApiFn() { |
22 | static TfTpu_ExecutorApiFn executor_api_fn; |
23 | return &executor_api_fn; |
24 | } |
25 | |
26 | bool IsStreamExecutorEnabled(TfTpu_ExecutorApiFn* executor_api_fn) { |
27 | if (!IsInitialized(executor_api_fn)) { |
28 | return false; |
29 | } |
30 | bool is_se_enabled = false; |
31 | auto* tpu_platform = executor_api_fn->TpuPlatform_NewFn(); |
32 | if (tpu_platform != nullptr) { |
33 | is_se_enabled = true; |
34 | executor_api_fn->TpuPlatform_FreeFn(tpu_platform); |
35 | } |
36 | return is_se_enabled; |
37 | } |
38 | |
39 | bool IsInitialized(TfTpu_ExecutorApiFn* executor_api_fn) { |
40 | // Check if an arbitrary function pointer is initialized. We could check more |
41 | // functions or add an explicit 'initialized' field to TfTpu_ExecutorApiFn, |
42 | // but this works well enough. |
43 | return executor_api_fn->TpuPlatform_NewFn != nullptr; |
44 | } |
45 | |
46 | } // namespace tpu |
47 | } // namespace tensorflow |
48 |