1 /* Copyright 2016 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 #ifndef TENSORFLOW_CORE_UTIL_STREAM_EXECUTOR_UTIL_H_ 17 #define TENSORFLOW_CORE_UTIL_STREAM_EXECUTOR_UTIL_H_ 18 19 #include "tensorflow/core/framework/tensor.h" 20 #include "tensorflow/core/lib/core/errors.h" 21 #include "tensorflow/core/lib/core/status.h" 22 #include "tensorflow/core/platform/stream_executor.h" 23 24 namespace tensorflow { 25 26 // StreamExecutorUtil contains functions useful for interfacing 27 // between StreamExecutor classes and TensorFlow. 28 class StreamExecutorUtil { 29 public: 30 // Map a Tensor as a DeviceMemory object wrapping the given typed 31 // buffer. 32 template <typename T> 33 static perftools::gputools::DeviceMemory<T> AsDeviceMemory(const Tensor& t) { 34 T* ptr = reinterpret_cast<T*>(const_cast<char*>(t.tensor_data().data())); 35 return perftools::gputools::DeviceMemory<T>( 36 perftools::gputools::DeviceMemoryBase(ptr, t.TotalBytes())); 37 } 38 39 // Converts from a StreamExecutor Status to a TensorFlow Status. 40 // 41 // This assumes that the error codes between the two implementations 42 // match. 43 static Status ConvertStatus(const perftools::gputools::port::Status& s) { 44 return s.ok() ? Status::OK() 45 : Status(static_cast<tensorflow::error::Code>( 46 static_cast<int>(s.code())), 47 s.error_message()); 48 } 49 }; 50 51 } // namespace tensorflow 52 53 #endif // TENSORFLOW_CORE_UTIL_STREAM_EXECUTOR_UTIL_H_ 54
