Измерение с boost :: posix_time :: microsec_clock имеет ошибку более десяти микросекунд?
У меня есть следующий код:
long long unsigned int GetCurrentTimestamp()
{
LARGE_INTEGER res;
QueryPerformanceCounter(&res);
return res.QuadPart;
}
long long unsigned int initalizeFrequency()
{
LARGE_INTEGER res;
QueryPerformanceFrequency(&res);
return res.QuadPart;
}
//start time stamp
boost::posix_time::ptime startTime = boost::posix_time::microsec_clock::local_time();
long long unsigned int start = GetCurrentTimestamp();
// ....
// execution that should be measured
// ....
long long unsigned int end = GetCurrentTimestamp();
boost::posix_time::ptime endTime = boost::posix_time::microsec_clock::local_time();
boost::posix_time::time_duration duration = endTime - startTime;
std::cout < "Duration by Boost posix: " < duration.total_microseconds()