#include <stdio.h>
#include <windows.h>
main()
{
LARGE_INTEGER frequency,counter, oldcounter;
BOOL Result;
int i=0;
Result = QueryPerformanceFrequency(&frequency);
Result = QueryPerformanceCounter(&oldcounter);
do {
Sleep(1);
} while( i++ < 10);
QueryPerformanceCounter(&counter);
printf("Elapsed time is %lf\n", ((double)counter.QuadPart -
(double)oldcounter.QuadPart)/(double)frequency.QuadPart);
printf("done\n");
}
Link with kernel32.dll
Bob
Joe Taylor wrote:
Bill --
Linrad is a complicated program with very tight real-time
constraints. As a consequence, Leif prefers a lean-and-mean approach
in which one can
understand, at a detailed level, as much as possibly of what is going
on.
If the access to the Registry is required, so be it. If you can
produce a simple C routine that wraps the necessary system calls and
produces a fractional CPU load, so that another C routine can access
it, I am sure that Leif would greatly appreciate it!
With best wishes,
-- 73, Joe, K1JT
Bill Tracey wrote:
Don't know that there is a single call to do it .. the Pdh/registry
stuff can do it from straight C -- takes a few calls though.
What's the issue with looking in the Registry?
Cheers,
Bill (kd5tfd)
At 09:08 PM 8/25/2005, Joe Taylor wrote:
Thanks, Bill. I have found references like the URL you kindly
provided.
What we are looking for, I'm afraid, is a way to get at the desired
information from "plain old C". No C#, no .Net, no Registry, just
a plain vanilla system call. As far as I can tell, one does not
exist in Windows.
-- Joe, K1JT
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