56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
/* Copyright 2020 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#include "tensorflow/lite/tflite_with_xnnpack_optional.h"
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#include <memory>
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#include "tensorflow/lite/c/common.h"
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#include "tensorflow/lite/core/macros.h"
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#ifdef TFLITE_BUILD_WITH_XNNPACK_DELEGATE
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#include "tensorflow/lite/delegates/xnnpack/xnnpack_delegate.h"
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#endif
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namespace tflite {
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using TfLiteDelegatePtr =
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std::unique_ptr<TfLiteDelegate, void (*)(TfLiteDelegate*)>;
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#ifndef TFLITE_BUILD_WITH_XNNPACK_DELEGATE
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// Using weak symbols to create a delegate allows automatic injection of the
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// delegate simply by adding it as a dependency. See the strong override in
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// lite/tflite_with_xnnpack.cc,
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TFLITE_ATTRIBUTE_WEAK TfLiteDelegatePtr
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AcquireXNNPACKDelegate(int num_threads) {
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return TfLiteDelegatePtr(nullptr, [](TfLiteDelegate*) {});
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}
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#endif
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#ifdef TFLITE_BUILD_WITH_XNNPACK_DELEGATE
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TfLiteDelegatePtr MaybeCreateXNNPACKDelegate(int num_threads) {
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auto opts = TfLiteXNNPackDelegateOptionsDefault();
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// Note that we don't want to use the thread pool for num_threads == 1.
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opts.num_threads = num_threads > 1 ? num_threads : 0;
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return TfLiteDelegatePtr(TfLiteXNNPackDelegateCreate(&opts),
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TfLiteXNNPackDelegateDelete);
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}
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#else
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TfLiteDelegatePtr MaybeCreateXNNPACKDelegate(int num_threads) {
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return AcquireXNNPACKDelegate(num_threads);
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}
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#endif
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} // namespace tflite
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