Current Time with microsecond precision on windows

[Dwarf007]

you mean it just gives a millisecond accurate time and the microseconds are a kind of rand() % 999 ?

[wysota]

you mean it just gives a millisecond accurate time and the microseconds are a kind of rand() % 999 ?

Or set to 0. But generaly yes, it might be so.

[Dwarf007]

*grumpfl*

Ok thanks.. I think I will do something like that then.. (rand() % 999)

[wysota]

Why do you need microseconds anyway?

[Dwarf007]

wysota: I want to do a kind of portable and accurate gettimeofday();

Here is the solution, in case someone wants to do the same one day.
No garantie on it but it seems to work.

Windows part for a portable gettimeofday():

#ifdef _WIN32_
 
#include <windows.h>
 
int gettimeofday( struct timeval *tv, struct timezone *tz )
{
    time_t rawtime;
 
    time(&rawtime);
    tv->tv_sec = (long)rawtime;
 
    // here starts the microsecond resolution:
 
    LARGE_INTEGER tickPerSecond;
    LARGE_INTEGER tick; // a point in time
 
    // get the high resolution counter's accuracy
    QueryPerformanceFrequency(&tickPerSecond);
 
    // what time is it ?
    QueryPerformanceCounter(&tick);
 
    // and here we get the current microsecond! \o/
    tv->tv_usec = (tick.QuadPart % tickPerSecond.QuadPart);
 
    return 0;
}
#endif // _WIN32_

#ifdef _WIN32_

#include <windows.h>

int gettimeofday( struct timeval *tv, struct timezone *tz )
{
    time_t rawtime;

    time(&rawtime);
    tv->tv_sec = (long)rawtime;

    // here starts the microsecond resolution:

    LARGE_INTEGER tickPerSecond;
    LARGE_INTEGER tick; // a point in time

    // get the high resolution counter's accuracy
    QueryPerformanceFrequency(&tickPerSecond);

    // what time is it ?
    QueryPerformanceCounter(&tick);

    // and here we get the current microsecond! \o/
    tv->tv_usec = (tick.QuadPart % tickPerSecond.QuadPart);

    return 0;
}
#endif // _WIN32_

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[TheKedge]

.... and here's a class using those funcs (if it's any help)

K