Re: input_event_hook (?) freezes input

[Keith Goodman]

On 6/14/05, address@hidden <address@hidden> wrote:
> Hi,
> I'm having trouble with the input_event_hook
> function, and I'm not even sure what exactly
> the symptoms are. :( Any hints are more than
> welcome!
> 
> I'm developing an IDE for octave (availible at
> http://yaog.sf.net). The IDE communicates with
> octave both via the terminal and a FIFO.
> Octave polls the FIFO with a .oct that gets
> run by the input_event_hook-mechanism.
> All the .oct file does is check if there is data
> (ASCII command) on the FIFO. If there is, it
> is run with the eval_string() function.
> 
> The main problem is that sometimes terminal
> input freezes. Octave runs, but the stdin and
> stdout are ignored. I can still communicate with
> octave via the FIFO. (and octave responds, of
> course).
> The freeze happens pseudo-randomly. On a RedHat
> EL3 with octave 2.9.3 this happens after 1-3
> FIFO-communications. On a MacOSX there can be
> up to 40 communications via the FIFO before the
> freeze occurs.
> 
> While trying to debug this, I noticed that the
> .oct-file leaks memory on MacOSX with octave 2.9.3
> It really shouldn't, and doesn't leak on Mac
> with octave 2.1.67. Nor does it leak on the
> RHEL with octave 2.9.3. ( I couldn't compile
> it with octave-2.1.50 on the RHEL).
> I don't know if the freeze and mem-leak are connected.
> I didn't get a freeze with Mac and octave 2.1.67.
> (but that doens't mean there wouldn't be the possibility)
> 
> Has anyone had similar problems?
> Any hints?
> 
> Thanks in advance,
> Kalle Raiskila

Is there already a plan for an Octave API that would make it easier
for someone to develop a full-featured IDE?

If not, should we start documenting what it should look like?

As soon as a good IDE is ready, I'm calling The Mathworks to cancel my
maintenance contracts.



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