ITimer returning incorrect value

[Gatekeeper]

Hi,
I found this bug last night while I was mucking around. To me it definitely seems like a bug. Somebody correct me if I'm wrong.

Basically, I found that ITimer->getRealTime() sometimes returns a slighltly incorrect value. Here was what I was doing:

Code: Select all

u32 starttime = Timer->getRealTime();

//blah blah blah

u32 currenttime = Timer->getRealTime();
u32 deltatime = currenttime - starttime;

Well, if the code between starttime and currenttime took less than 1msec, sometimes I was getting a value for starttime being larger than currenttime (by 1 or 2 msecs).

For me it was an easy fix - I just checked if starttime was larger than current time, and if it was I set deltatime to zero.

[niko]

Hm, strange.

[vitek]

http://support.microsoft.com/default.as ... -us;896256
http://support.microsoft.com/default.as ... -us;274323
http://support.microsoft.com/default.as ... -us;835730
http://msdn.microsoft.com/library/defau ... essors.asp

http://www.ice-graphics.com/ICEAffinity/IndexE.html
http://www.gamedev.net/community/forums ... _id=370281
http://www.amdzone.com/modules.php?op=m ... e&sid=3964

[Gatekeeper]

I don't use a dual core processor or a dual CPU machine... I use an AMD 64 3200+, running on 32bit WindowsXP.