Re: question about thread scheduling

Is there any way to write debug messages into a file on CEPC instead of
write them over KITL, since heavy transitions from KITL to application make
it difficult to see real time performance.

thanks
Zhiqiang


"Zhiqiang Li" <zhiqiang.li@xxxxxxxxxx> schrieb im Newsbeitrag
news:Ob5K9jHcHHA.4808@xxxxxxxxxxxxxxxxxxxxxxx
Hi Chris,
thanks for your help!
Zhiqiang
"<ctacke/>" <ctacke[@]opennetcf[dot]com> schrieb im Newsbeitrag
news:%23DKFEqGcHHA.4888@xxxxxxxxxxxxxxxxxxxxxxx
CeSetThreadPriority(GetCurrentThread(), priority);


--
Chris Tacke - Embedded MVP
OpenNETCF Consulting
Managed Code in the Embedded World
www.opennetcf.com
--



"Zhiqiang Li" <zhiqiang.li@xxxxxxxxxx> wrote in message
news:%23fkcpiGcHHA.3408@xxxxxxxxxxxxxxxxxxxxxxx
Dear All,
there is any way to change the default priority of the main thread of
an application process?

thanks in advance
Zhiqiang
"Zhiqiang Li" <zhiqiang.li@xxxxxxxxxx> schrieb im Newsbeitrag
news:OBk93KvaHHA.4552@xxxxxxxxxxxxxxxxxxxxxxx
Hi Remi,
I realize that I have misunderstood what you have told me. Actually,
what you provided is the template for my implementation.
thanks a lot for your help!

Zhiqiang
"Remi de Gravelaine" <gravelaine at aton dash sys dot fr> schrieb im
Newsbeitrag news:OHk45G9ZHHA.4520@xxxxxxxxxxxxxxxxxxxxxxx
Zhiqiang,

You should try to tell us *exactly* what you want to do.
You should also avoid multiplying the discussion threads if you want
people to take care of you from the beginning.
If I understood what you want to do, you have implemented a polling
loop to do some job (what kind of job?) every 4ms.
You have put this loop in a high-priority thread started by the
XXX_Init function of a stream driver.
You are using CE 6.0 on a CEPC.

The loop should thus look like:

while (!g_bSuicide)
{
Sleep(3);
<do some job>
}

There is no reason that such a loop exits except when g_bSuicide is
set to TRUE (something that can be done in XXX_Deinit) or the <do some
job> code executes a break of goto intruction.

Now, why Sleep(3) instead of Sleep(4)? Because Sleep(3) will sleep for
*at least* 3 ms and because Sleep is synchonized on timer ticks, that
fire every ms (producing the SYSINTR_RESCHED you are focusing on.) So,
Sleep(3) returns from sleeping right after the third tick and a new
1ms slice begins. You <do some job> during a portion of this slice and
reenter Sleep(3). Sleep(3) puts your thread to sleep for 3 timer ticks
and that means the time remaining in the current tick + 3 ms.

HTH
Remi











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