1 | /* Copyright 2018 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 | #ifndef TENSORFLOW_LITE_KERNELS_EIGEN_SUPPORT_H_ |
16 | #define TENSORFLOW_LITE_KERNELS_EIGEN_SUPPORT_H_ |
17 | |
18 | #include "tensorflow/lite/c/common.h" |
19 | |
20 | namespace EigenForTFLite { |
21 | struct ThreadPoolDevice; |
22 | } |
23 | |
24 | namespace tflite { |
25 | namespace eigen_support { |
26 | |
27 | // Let the framework know that the op will be using Eigen. If necessary a set of |
28 | // temporary Eigen objects might be created and placed in 'context'. |
29 | void IncrementUsageCounter(TfLiteContext* context); |
30 | |
31 | // Let the framework know that the op stopped using Eigen. If there are no more |
32 | // usages all temporary Eigen objects will be deleted. |
33 | void DecrementUsageCounter(TfLiteContext* context); |
34 | |
35 | // Fetch the ThreadPoolDevice associated with the provided context. |
36 | // |
37 | // Note: The caller must ensure that |IncrementUsageCounter()| has already been |
38 | // called. Moreover, it is *not* safe to cache the returned device; it may be |
39 | // invalidated if the context thread count changes. |
40 | const EigenForTFLite::ThreadPoolDevice* GetThreadPoolDevice( |
41 | TfLiteContext* context); |
42 | |
43 | } // namespace eigen_support |
44 | } // namespace tflite |
45 | |
46 | #endif // TENSORFLOW_LITE_KERNELS_EIGEN_SUPPORT_H_ |
47 | |