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 ExecutorApiFn()21TfTpu_ExecutorApiFn* ExecutorApiFn() { 22 static TfTpu_ExecutorApiFn executor_api_fn; 23 return &executor_api_fn; 24 } 25 IsInitialized(TfTpu_ExecutorApiFn * executor_api_fn)26bool IsInitialized(TfTpu_ExecutorApiFn* executor_api_fn) { 27 // Check if an arbitrary function pointer is initialized. We could check more 28 // functions or add an explicit 'initialized' field to TfTpu_ExecutorApiFn, 29 // but this works well enough. 30 return executor_api_fn->TpuPlatform_NewFn != nullptr; 31 } 32 33 } // namespace tpu 34 } // namespace tensorflow 35