#include <Windows.h>
#include <iostream>

using namespace std;

int main(int argc, char** argv)
{
    double frequency = -1.0;
    __int64 v;
    if(QueryPerformanceFrequency(reinterpret_cast<LARGE_INTEGER*>(&v)))
    {
        frequency = static_cast<double>(v);
    }
    printf("frequency %f\n", frequency);
    while(true)
    {
        __int64 now;
        QueryPerformanceCounter(reinterpret_cast<LARGE_INTEGER*>(&now));
        now /= frequency;

        __int64 wakeTime = now + 15;

        while(wakeTime > now)
        {
            cout << "waiting " << wakeTime - now << "(s) (wakeTime = " << wakeTime << ", now = " << now << ")\n";

            Sleep((wakeTime - now) * 1000);

            QueryPerformanceCounter(reinterpret_cast<LARGE_INTEGER*>(&now));
            now /= frequency;
        }
    }
}