src/armnn/WallClockTimer.cpp

   1 //
   2 // Copyright © 2017 Arm Ltd. All rights reserved.
   3 // See LICENSE file in the project root for full license information.
   4 //
   5
   6 #include "WallClockTimer.hpp"
   7
   8 namespace armnn
   9 {
  10
  11 const std::string WallClockTimer::WALL_CLOCK_TIME      ("Wall clock time");
  12 const std::string WallClockTimer::WALL_CLOCK_TIME_START(WallClockTimer::WALL_CLOCK_TIME + " (Start)");
  13 const std::string WallClockTimer::WALL_CLOCK_TIME_STOP (WallClockTimer::WALL_CLOCK_TIME + " (Stop)");
  14
  15 const char* WallClockTimer::GetName() const
  16 {
  17     return "WallClockTimer";
  18 }
  19
  20 void WallClockTimer::Start()
  21 {
  22     m_Start = clock::now();
  23 }
  24
  25 void WallClockTimer::Stop()
  26 {
  27     m_Stop = clock::now();
  28 }
  29
  30 std::vector<Measurement> WallClockTimer::GetMeasurements() const
  31 {
  32     const auto delta       = std::chrono::duration<double, std::milli>(m_Stop - m_Start);
  33     const auto startTimeMs = std::chrono::duration<double, std::milli>(m_Start.time_since_epoch());
  34     const auto stopTimeMs  = std::chrono::duration<double, std::milli>(m_Stop.time_since_epoch());
  35
  36     return { { WALL_CLOCK_TIME,       delta.count(),       Measurement::Unit::TIME_MS },
  37              { WALL_CLOCK_TIME_START, startTimeMs.count(), Measurement::Unit::TIME_MS },
  38              { WALL_CLOCK_TIME_STOP,  stopTimeMs.count(),  Measurement::Unit::TIME_MS } };
  39 }
  40
  41 } //namespace armnn