text: /*
   * Copyright 2019, The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #pragma once
  
  #include <stdint.h>
  
  namespace monotonic_time_stamper {
  
  class TimeStamp {
  public:
      TimeStamp(uint64_t ts) : timestamp_(ts), ok_(true) {}
      TimeStamp() : timestamp_(0), ok_(false) {}
      bool isOk() const { return ok_; }
      operator const uint64_t() const { return timestamp_; }
  
  private:
      uint64_t timestamp_;
      bool ok_;
  };
  
  TimeStamp now();
  
  }  // namespace monotonic_time_stamper
  