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//
// Copyright © 2017 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#include "WallClockTimer.hpp"
#include "armnn/Exceptions.hpp"
namespace armnn
{
const std::string WallClockTimer::WALL_CLOCK_TIME ("Wall clock time");
const std::string WallClockTimer::WALL_CLOCK_TIME_START(WallClockTimer::WALL_CLOCK_TIME + " (Start)");
const std::string WallClockTimer::WALL_CLOCK_TIME_STOP (WallClockTimer::WALL_CLOCK_TIME + " (Stop)");
const char* WallClockTimer::GetName() const
{
return "WallClockTimer";
}
void WallClockTimer::Start()
{
m_Start = clock::now();
}
void WallClockTimer::Stop()
{
m_Stop = clock::now();
}
void WallClockTimer::SetScaleFactor(Measurement::Unit measurementUnit)
{
switch(measurementUnit)
{
case Measurement::TIME_MS:
m_ScaleFactor = 1.f;
break;
case Measurement::TIME_US:
m_ScaleFactor = 1000.f;
break;
case Measurement::TIME_NS:
m_ScaleFactor = 1000000.f;
break;
default:
throw InvalidArgumentException("Invalid scale used");
}
m_Unit = measurementUnit;
}
std::vector<Measurement> WallClockTimer::GetMeasurements() const
{
const auto delta = std::chrono::duration<double, std::milli>(m_Stop - m_Start);
const auto startTimeMs = std::chrono::duration<double, std::milli>(m_Start.time_since_epoch());
const auto stopTimeMs = std::chrono::duration<double, std::milli>(m_Stop.time_since_epoch());
return { { WALL_CLOCK_TIME, delta.count() * m_ScaleFactor, m_Unit },
{ WALL_CLOCK_TIME_START, startTimeMs.count() * m_ScaleFactor, m_Unit },
{ WALL_CLOCK_TIME_STOP, stopTimeMs.count() * m_ScaleFactor, m_Unit } };
}
} //namespace armnn
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