Stop sign ignored while debugging linux pgm

Stop sign ignored while debugging linux pgm

[geneSmith]

I have a program (written by someone else) that I need to look at with 
gdb. The program runs in a tight loop looking for a keypress and 
servicing tcp/ip events with select. When the program runs under insight 
it seems to remove all the oxygen from the insight gui in that the STOP 
button and other menus are ineffective. The program itself responds to 
the keypresses appropriately. Also, if a window covers the insight gui 
with the program running under its control it never get redrawn.

When the program runs stand-alone (with insight/gdb) it does not respond 
to ctrl-c. Do I possibly need some sort of SIGINT handler?

When I write my own program just looping forever on printf it responds 
to the STOP button (SIGINT) as expected and stops the program 
executation as I would expect. But the other program program does not.

Tks,
-gene
-- 
Lit up like Levy's

Re: Stop sign ignored while debugging linux pgm

[geneSmith]

geneSmith wrote, On 3/25/2005 2:52 PM:

> I have a program (written by someone else) that I need to look at with 
> gdb. The program runs in a tight loop looking for a keypress and 
> servicing tcp/ip events with select. When the program runs under insight 
> it seems to remove all the oxygen from the insight gui in that the STOP 
> button and other menus are ineffective. The program itself resesponds to 
> the keypresses appropriately. Also, if a window covers the insight gui 
> with the program running under its control it never get redrawn.
> 
> When the program runs stand-alone (without insight/gdb) it does not respond 
> to ctrl-c. Do I possibly need some sort of SIGINT handler?
> 
> When I write my own test program just looping forever on printf it responds 
> to the STOP button (SIGINT) as expected and stops the program 
> executation as I would expect. But the other program does not.
> 
> Tks,
> -gene

Found that program had termios flag ISIG forced off. If left on can now 
at least do ctrl-c in program's xterm and cause insight to halt which is 
good. However, STOP button (and other menu items in insight) still 
disabled while program is running. Would be nice if STOP button worked 
but having ctrl-c respond is next best thing.
-gene
ps: Corrected a couple typos in original post above.

-- 
Lit up like Levy's