// Window Version 1. Simple Count //

DWORD start = GetTickCount();

DoBigTask();

DWORD end = GetTickCount();

std::cout << end - start << std::endl;

// Window Version 2. Loop Count //

DWORD start = GetTickCount();

for (unsigned int i = 0; i < n; ++i)

{

Foo();

};

DWORD end = GetTickCount();

std::cout << end - start << std::endl;

// GetTickCount()'s Tick //

unsigned nz_count = 0, nz_sum = 0;

ULONG last, next;

for(last = GetTickCount(); nz_count < 100 ; last = next)

{

next = GetTickCount();

if (next != last)

{

nz_count +=1;

nz_sun += (next- last);

}

};

std::cout << "GetTickCount() mean resolution " << (double)nz_sum /nz_count << "tick" << std::endl;

// Latency //

ULONG start = GetTickCount();

LARGE_INTEGER count;

for(counter i = 0; i < nCalls; ++i)

{

QueryPerformanceCounter(&couner);

}

ULONG stop = GetTickCount();

std::cout << stop - start << "ms for 100m Query PerformanceCounter() calls " << std::endl;

// Priority //

SetPriorityClass(GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS);

SertThreadPriority(GetCurrentThread(), THREAD_PRIORITY_HIGHEST);

SetPriorityClass(GetCurrentProcess(), NORMAL_PRIORITY_CLASS);

SertThreadPriority(GetCurrentThread(), THREAD_PRIORITY_NORMAL);