static
std::chrono::time_point<std::chrono::system_clock, std::common_type_t<Duration, date::days>>
to_sys(std::chrono::time_point<mil_clock, Duration> const& tp)
{
++conversions;
return epoch + tp.time_since_epoch();
}
static
std::chrono::time_point<s2s_clock, Duration>
from_sys(std::chrono::time_point<std::chrono::system_clock, Duration> const& tp)
{
++conversions;
return std::chrono::time_point<s2s_clock, Duration>(tp.time_since_epoch());
}
static int64_t convert(
const std::chrono::time_point<std::chrono::system_clock>& x)
{
return std::chrono::duration_cast<
std::chrono::duration<int64_t, std::micro>>(
x.time_since_epoch()-std::chrono::seconds(946684800)).count();
}
std::chrono::time_point<mil_clock, std::common_type_t<Duration, date::days>>
operator()(std::chrono::time_point<s2s_clock, Duration> const& tp)
{
++conversions;
using res = std::chrono::time_point<mil_clock, std::common_type_t<Duration, date::days>>;
return res(tp.time_since_epoch() - mil_clock::epoch.time_since_epoch());
}
int main()
{
typedef std::chrono::system_clock Clock;
typedef std::chrono::milliseconds Duration;
{
std::chrono::time_point<Clock, Duration> t(Duration(3));
assert(t.time_since_epoch() == Duration(3));
}
{
std::chrono::time_point<Clock, Duration> t(std::chrono::seconds(3));
assert(t.time_since_epoch() == Duration(3000));
}
#if TEST_STD_VER > 11
{
constexpr std::chrono::time_point<Clock, Duration> t(Duration(3));
static_assert(t.time_since_epoch() == Duration(3), "");
}
{
constexpr std::chrono::time_point<Clock, Duration> t(std::chrono::seconds(3));
static_assert(t.time_since_epoch() == Duration(3000), "");
}
#endif
}
timespec
timepoint_to_timespec(const std::chrono::time_point<Clock, Duration> &timepoint)
{
timespec ts;
auto rel_duration = timepoint.time_since_epoch();
const auto sec =
std::chrono::duration_cast<std::chrono::seconds>(rel_duration);
ts.tv_sec = sec.count();
ts.tv_nsec = static_cast<long>(
std::chrono::duration_cast<std::chrono::nanoseconds>(
rel_duration - sec)
.count());
return ts;
}
void printTimePoint(const std::chrono::time_point<Clock, Duration>& tp) {
std::cout << std::fixed << tp.time_since_epoch().count() << std::endl;
}
inline
void CEREAL_SAVE_FUNCTION_NAME(Archive &ar, std::chrono::time_point<C, D> const &dur) {
ar(CEREAL_NVP_("time_since_epoch", dur.time_since_epoch()));
}
static inline void TimePointToLargeInteger(std::chrono::time_point<_Clock, _Rep>& tp, LARGE_INTEGER* ft)
{
using namespace std::chrono;
winDuration t = duration_cast<winDuration>(tp.time_since_epoch());
ft->QuadPart = t.count() + 116444736000000000;
}
std::chrono::time_point<steady_based_clock, Duration>
operator()(std::chrono::time_point<std::chrono::steady_clock, Duration> const& tp) const
{
using res = std::chrono::time_point<steady_based_clock, Duration>;
return res(tp.time_since_epoch());
}