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//
// Copyright © 2017 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#pragma once
#include "Instrument.hpp"
#include <chrono>
namespace armnn
{
#if defined(CLOCK_MONOTONIC_RAW) && defined(__unix__)
#define USE_CLOCK_MONOTONIC_RAW 1
#else
#define USE_CLOCK_MONOTONIC_RAW 0
#endif
#if USE_CLOCK_MONOTONIC_RAW
class MonotonicClockRaw
{
public:
using duration = std::chrono::nanoseconds;
using time_point = std::chrono::time_point<MonotonicClockRaw, duration>;
static std::chrono::time_point<MonotonicClockRaw, 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));
}
};
#endif
// Implementation of an instrument to measure elapsed wall-clock time in microseconds.
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;
// Get the recorded measurements
std::vector<Measurement> GetMeasurements() const override;
#if USE_CLOCK_MONOTONIC_RAW
using clock = MonotonicClockRaw;
#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;
};
} //namespace armnn
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