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speex-webrtc-test/src/Timer.h
2020-11-12 17:59:05 +03:00

144 lines
3.5 KiB
C++

#ifndef _SPEEX_WEBRTC_TEST_TIMER_H_
#define _SPEEX_WEBRTC_TEST_TIMER_H_
#include <QDebug>
#include <chrono>
#include <stdexcept>
#include <utility>
namespace SpeexWebRTCTest {
namespace _detail {
template <typename... Ts>
struct is_one_of;
template <typename T, typename U>
struct is_one_of<T, U>
{
static constexpr bool value = std::is_same<T, U>::value;
};
template <typename T, typename U, typename... Ts>
struct is_one_of<T, U, Ts...>
{
static constexpr bool value = std::is_same<T, U>::value || is_one_of<T, Ts...>::value;
};
template <class Duration,
typename = typename std::enable_if<is_one_of<Duration,
std::chrono::hours,
std::chrono::minutes,
std::chrono::seconds,
std::chrono::milliseconds,
std::chrono::microseconds,
std::chrono::nanoseconds>::value>::type>
constexpr const char* duration_suffix()
{
if (std::is_same<Duration, std::chrono::hours>::value)
{
return "h";
}
else if (std::is_same<Duration, std::chrono::minutes>::value)
{
return "min";
}
else if (std::is_same<Duration, std::chrono::seconds>::value)
{
return "s";
}
else if (std::is_same<Duration, std::chrono::milliseconds>::value)
{
return "ms";
}
else if (std::is_same<Duration, std::chrono::microseconds>::value)
{
return "us";
}
else if (std::is_same<Duration, std::chrono::nanoseconds>::value)
{
return "ns";
}
return "";
}
template <int, class DurationIn>
std::string format_impl(DurationIn)
{
return {};
}
template <int count, class DurationIn, class FirstDuration, class... RestDurations>
std::string format_impl(DurationIn d)
{
std::string out;
auto val = std::chrono::duration_cast<FirstDuration>(d);
if (val.count() != 0)
{
out = std::to_string(val.count()) + duration_suffix<FirstDuration>();
if (sizeof...(RestDurations) > 0)
{
out += " " + format_impl<count + 1, DurationIn, RestDurations...>(d - val);
}
}
else
{
if (sizeof...(RestDurations) > 0)
{
out = format_impl<count, DurationIn, RestDurations...>(d);
}
else if (count == 0)
{
out = std::to_string(0) + duration_suffix<FirstDuration>();
}
}
return out;
}
} // namespace _detail
template <class... RestDurations, class DurationIn>
std::string format(DurationIn d)
{
return _detail::format_impl<0, DurationIn, RestDurations...>(d);
}
template <typename... Durations>
class Timer final
{
public:
explicit Timer(const QDebug& debug, QString name = "") : debug_(debug), name_(std::move(name))
{
start_ = std::chrono::high_resolution_clock::now();
}
~Timer()
{
TimePoint stop = std::chrono::high_resolution_clock::now();
if (name_.isEmpty())
debug_.nospace().noquote() << "Timer: " << format<Durations...>(stop - start_).c_str();
else
debug_.nospace().noquote()
<< "Timer [" << name_ << "]: " << format<Durations...>(stop - start_).c_str();
}
private:
using TimePoint = std::chrono::time_point<std::chrono::high_resolution_clock,
std::chrono::high_resolution_clock::duration>;
QDebug debug_;
QString name_;
TimePoint start_;
};
using MsTimer = Timer<std::chrono::seconds, std::chrono::milliseconds, std::chrono::microseconds>;
} // namespace SpeexWebRTCTest
#define TIMER(debug) MsTimer timer(debug, __func__);
#endif //_SPEEX_WEBRTC_TEST_TIMER_H_