The following code is giving me strange results when I build it using MSVC++
and link to the binaries for glib-win32 (I've tried VC++8 and also falling
back to VC++6)
#include <glib/gtimer.h>
int main (int argc, char* argv[])
{
gulong microseconds;
int count;
GTimer* pTimer = g_timer_new ();
do {
g_timer_elapsed (pTimer, µseconds);
count = (int) microseconds;
printf ("Time elapsed = %d\n", count);
g_usleep (1000000);
} while (microseconds < 10000000);
return 0;
}
Ignore the fact that I'm not cleaning up properly. It's just a 'minimal
code' example. I expected the outputted value of count'. to increment in
(approximately) 1 second intervals - e.g. the first value might be 0, the
next 1000000, then 2000000, then 3000000 etc (all approximate, of course).
If I run the above code in my debugger (and set a break point at the printf
line) I see seemingly random figures in the output, like this:-
Time elapsed = 781250
Time elapsed = 531250
Time elapsed = 968750
Time elapsed = 843750
Time elapsed = 968750
Time elapsed = 968750
Time elapsed = 93750
Time elapsed = 406250
that's an actual sequence. At first, I assumed that running in the debugger
might be upsetting the timer so I decided to look at the output from just
running the program normally. But if I run the program normally I just get
this repeated ad infinitum:-
Time elapsed = 0
Time elapsed = 0
Time elapsed = 0
Time elapsed = 0
Time elapsed = 0
Time elapsed = 0
I didn't call 'g_timer_start()' because the manual says that it gets called
automatically by g_timer_new(). However, even if I call it, I still see the
same output.
Should I have initialized something first?
John
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