1 /* Copyright 2019 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_LIB_MONITORING_TIMED_H_ 17 #define TENSORFLOW_CORE_LIB_MONITORING_TIMED_H_ 18 19 #include "tensorflow/core/platform/env_time.h" 20 21 namespace tensorflow { 22 namespace monitoring { 23 24 // Takes a Sampler, PercentileSample or Gauge cell, and post timing values 25 // (default in milliseconds) according to its scope lifetime. 26 template <typename T> 27 class Timed { 28 public: 29 explicit Timed(T* cell, double scale = 1e-6) cell_(cell)30 : cell_(cell), scale_(scale), start_(EnvTime::NowNanos()) {} 31 ~Timed()32 ~Timed() { cell_->Add(scale_ * (EnvTime::NowNanos() - start_)); } 33 34 private: 35 T* cell_ = nullptr; 36 double scale_ = 1e-6; 37 uint64 start_ = 0; 38 }; 39 40 template <typename T> 41 Timed<T> MakeTimed(T* cell, double scale = 1e-6) { 42 return Timed<T>(cell, scale); 43 } 44 45 } // namespace monitoring 46 } // namespace tensorflow 47 48 #endif // TENSORFLOW_CORE_LIB_MONITORING_TIMED_H_ 49