[Glade-users] Re: running real time application behind glade

[porsche1904 yahoo com (Aaron Yang)]

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hi, thanks for replying
 
  I was referring to both actually.
 
  For instance, when I start my glade program, a real-time counter begins in the background, so that it'll be 
displayed in my glade program, counting in 1 second interval.
  Then when I want to execute something in hard real-time, a signal is sent to the real-time to execute 
immediately.
  I've tried experimenting with rtlinux-3.2-pre2, but I can only do it in linux platform, and I'm trying to 
code it in main.c in my glade program... 
 
  do you know how I can for instance,
 
  insert an entry box in my glade window,
  then see a real-time counter, see a number in that box that increases from 0 onwards in 1 second interval, 
after executing the glade program?
  
  i've heard of clock.h, but I don't have any clues to go about doing it.
 
  thanks again.
 
regards,
aaron

Valdis Kletnieks vt edu wrote:
On Mon, 01 Nov 2004 01:30:36 PST, Aaron Yang said:
> does anyone know how do I go about running a real
> time application after I executed a glade program?

Do you mean "real time" as in "the program is running at the same time as your
Glade program, and they interact back and forth", or do you mean the usual
computer-science meaning of the phrase "real time" as in "this program has
specific critical timing constraints" (such as if it doesn't respond to an
interrupt in 50 milliseconds, the chemical plant blows up)

Doing *real* "real-time" programming in the Linux kernel isn't as easy as it
looks, as there's lots of latency-inducing locks inside the kernel and the
like. Ingo Molnar has been doing some work in this area, but there's still
quite a ways to go before it's a hardened real-time operating system.



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<DIV>hi, thanks for replying</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp; I was referring to both actually.</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp; For instance, when I start my glade program, a real-time counter begins in the background, so 
that it'll be displayed in my glade program, counting in 1 second interval.</DIV>
<DIV>&nbsp; Then when I want to execute something in hard real-time, a signal is sent to the real-time to 
execute immediately.</DIV>
<DIV>&nbsp; I've tried experimenting with rtlinux-3.2-pre2, but I can only do it in linux platform, and I'm 
trying to code it in main.c in my glade program... </DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp; do you know how I can for instance,</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp; insert an entry box in my glade window,</DIV>
<DIV>&nbsp; then see a real-time counter, see a number in that box that increases from 0 onwards in 1 second 
interval, after executing the glade program?</DIV>
<DIV>&nbsp; </DIV>
<DIV>&nbsp; i've heard of clock.h, but I don't have any clues to go about doing it.</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp; thanks again.</DIV>
<DIV>&nbsp;</DIV>
<DIV>regards,</DIV>
<DIV>aaron<BR><BR><B><I>Valdis Kletnieks vt edu</I></B> wrote:</DIV>
<BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">On Mon, 
01 Nov 2004 01:30:36 PST, Aaron Yang said:<BR>&gt; does anyone know how do I go about running a real<BR>&gt; 
time application after I executed a glade program?<BR><BR>Do you mean "real time" as in "the program is 
running at the same time as your<BR>Glade program, and they interact back and forth", or do you mean the 
usual<BR>computer-science meaning of the phrase "real time" as in "this program has<BR>specific critical 
timing constraints" (such as if it doesn't respond to an<BR>interrupt in 50 milliseconds, the chemical plant 
blows up)<BR><BR>Doing *real* "real-time" programming in the Linux kernel isn't as easy as it<BR>looks, as 
there's lots of latency-inducing locks inside the kernel and the<BR>like. Ingo Molnar has been doing some 
work in this area, but there's still<BR>quite a ways to go before it's a hardened real-time operating 
system.<BR><BR><BR><BR>&gt; ATTACHMENT
 part 2 application/pgp-signature <BR></BLOCKQUOTE><p>
        
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