is g_get_current_time() sufficiently precise under Windows?

[Rick Jones <rick jones2 hp com>]

Hi -

While tracking-down some fun with measuring CPU utilization under 
Windows my "Windows guru" told me that while GetSystemTimeAsFileTime 
returns 100's of nanoseconds since the beginning of the Windows epoch, 
it is really only updated once per clock tick.  Presently that is once 
every 10 ms.

From poking about under msdn.microsoft.com it seems that just about 
anything that returns clock time is limited to 10 ms precision, so I'm 
not entirely sure there is much to be done but I thought I should 
ask/mention since the online glib API docs don't seem to mention that 
limitation:

http://developer.gnome.org/doc/API/2.0/glib/glib-Date-and-Time-Functions.html#g-get-current-time

rick jones

Seems that GetSystemTimeAdjustment is involved in finding the precision 
of clock time:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/sysinfo/base/getsystemtimeadjustment.asp

In glib's documentation's defence, the MSDN discussion of 
GetSystemTimeAsFileTime:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/sysinfo/base/getsystemtimeadjustment.asp

doesn't discuss the limitation either