How can I port the `clock_gettime` function to Windows for accurate timing measurements?

Porting clock_gettime to Windows

Problem:

You have code that relies on the clock_gettime function to measure execution time on QNX MOmentics but need to port it to Windows.

Solution:

To port the clock_gettime function to Windows, you can use the following code:

<code class="cpp">LARGE_INTEGER
getFILETIMEoffset()
{
    SYSTEMTIME s;
    FILETIME f;
    LARGE_INTEGER t;

    s.wYear = 1970;
    s.wMonth = 1;
    s.wDay = 1;
    s.wHour = 0;
    s.wMinute = 0;
    s.wSecond = 0;
    s.wMilliseconds = 0;
    SystemTimeToFileTime(&s, &f);
    t.QuadPart = f.dwHighDateTime;
    t.QuadPart tv_sec = t.QuadPart / 1000000;
    tv->tv_usec = t.QuadPart % 1000000;
    return (0);
}</code>

This code will provide a replacement for clock_gettime suitable for Windows, allowing you to accurately calculate execution times in your ported code.

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