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 #ifndef TENSORFLOW_CORE_TPU_TPU_INIT_MODE_H_ 17 #define TENSORFLOW_CORE_TPU_TPU_INIT_MODE_H_ 18 19 #include "tensorflow/core/lib/core/status.h" 20 21 namespace tensorflow { 22 23 enum class TPUInitMode : int { kNone, kGlobal, kRegular }; 24 25 // Sets the TPU initialization mode appropriately. 26 // 27 // Requires that mode is not kNone, and mode doesn't transition kGlobal 28 // <-> kRegular. 29 // 30 // IMPLEMENTATION DETAILS: 31 // Used internally to record the current mode and type of API used for TPU 32 // initialization in a global static variable. 33 Status SetTPUInitMode(TPUInitMode mode); 34 35 // Returns the current TPUInitMode. 36 TPUInitMode GetTPUInitMode(); 37 38 namespace test { 39 40 // Forces the tpu init mode to be changed. 41 void ForceSetTPUInitMode(TPUInitMode mode); 42 43 } // namespace test 44 45 } // namespace tensorflow 46 47 #endif // TENSORFLOW_CORE_TPU_TPU_INIT_MODE_H_ 48