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_INITIALIZER_HELPER_H_ 17 #define TENSORFLOW_CORE_TPU_TPU_INITIALIZER_HELPER_H_ 18 19 #include <string> 20 #include <vector> 21 22 namespace tensorflow { 23 namespace tpu { 24 25 // This will acquire a system-wide lock on behalf of the whole process. Follow 26 // up calls to this function will return true if the lock has been acquired and 27 // false if we failed to acquire the lock. 28 bool TryAcquireTpuLock(); 29 30 // Returns arguments (e.g. flags) set in the LIBTPU_INIT_ARGS environment 31 // variable. The first return value is the arguments, the second return value is 32 // pointers to the arguments suitable for passing into the C API. 33 std::pair<std::vector<std::string>, std::vector<const char*>> 34 GetLibTpuInitArguments(); 35 36 } // namespace tpu 37 } // namespace tensorflow 38 39 #endif // TENSORFLOW_CORE_TPU_TPU_INITIALIZER_HELPER_H_ 40