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//
// Copyright © 2017 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#pragma once
#include "Instrument.hpp"
#include <chrono>
namespace armnn
{
// Clock class that uses the same timestamp function as the Mali DDK.
class monotonic_clock_raw {
public:
using duration = std::chrono::nanoseconds;
using time_point = std::chrono::time_point<monotonic_clock_raw, duration>;
static std::chrono::time_point<monotonic_clock_raw, std::chrono::nanoseconds> now() noexcept
{
timespec ts;
clock_gettime(CLOCK_MONOTONIC_RAW, &ts);
return time_point(std::chrono::nanoseconds(ts.tv_sec*1000000000 + ts.tv_nsec));
}
};
// Implementation of an instrument to measure elapsed wall-clock time in milliseconds.
class WallClockTimer : public Instrument
{
public:
// Construct a Wall Clock Timer
WallClockTimer() = default;
~WallClockTimer() = default;
// Start the Wall clock timer
void Start() override;
// Stop the Wall clock timer
void Stop() override;
// Get the name of the timer
const char* GetName() const override;
void SetScaleFactor(Measurement::Unit measurementUnit);
// Get the recorded measurements
std::vector<Measurement> GetMeasurements() const override;
#if defined(CLOCK_MONOTONIC_RAW)
using clock = monotonic_clock_raw;
#else
using clock = std::chrono::steady_clock;
#endif
static const std::string WALL_CLOCK_TIME;
static const std::string WALL_CLOCK_TIME_START;
static const std::string WALL_CLOCK_TIME_STOP;
private:
clock::time_point m_Start;
clock::time_point m_Stop;
float m_ScaleFactor = 1.f;
Measurement::Unit m_Unit = Measurement::Unit::TIME_MS;
};
} //namespace armnn
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