Re: Pete Lomax M Editor vs Edita
Pete Lomax wrote:
>
> On Sun, 04 Jun 2006 18:36:06 -0700, Serge Lavigne
> <guest at RapidEuphoria.com> wrote:
>
> >Thanks Pete for the elaborate answer.
> Have another 
)
> >
> >I was looking for debugging facilities like in the good old Ed (with trace).
> >My question is probably naive but is this something potentially
> >feasible with Edita?
> OK, first off the trace() window and Ed look very similar. What
> happens when you run a program from Ed is that Ed stops dead until the
> program finishes. ex.exe 'inherits' the console so if it does go into
> trace() it re-uses the same window that Ed was using. So it appears
> that Ed is displaying trace(), but in fact Ed itself is fast asleep.
> One quick proof of this is that ed.ex does not contain the string
> "main", so it cannot be displaying "F1=main F2=trace". cmiiw.
>
> In contrast, exw.exe does not inherit the console - try running a
> *.exw program from Ed to see what I mean. In this case Ed does not go
> to sleep, which I might struggle to explain:
>
> One thing to note here is that
> }}}
<eucode>
> atom t0,t1
> t0 = time()
> system("exw.exe",1)
> t1 = time()
> ?{t0,t1}
> if getc(0) then end if
> </eucode>
{{{
> behaves rather differently to:
> }}}
<eucode>
> atom t0,t1
> t0 = time()
> system("ex.exe",1)
> t1 = time()
> ?{t0,t1}
> if getc(0) then end if
> </eucode>
{{{
> In the first case (exw) control returns almost immediately, in the
> second(ex) it waits until the program has terminated, so you'll get
> something like {0.01,0.25} for the exw case and {0.01,7.58} for the
> ex case (depending on how long you leave it). A complete explanation
> of the difference would probably involve the subsystem setting in the
> PE header of the windows executable, which I only vaguely grasp.
> Maybe someone else can step in.
>
> OK, back to the topic.
> Attempting to do something with Edita when running "exw.exe test.exw"
> or "ex.exe test.ex" is an absolute non-starter. The official PD
> executables simply don't have any kind of API to do this. There is
> however at least one alternative: eu.ex. Unfortunately this contains
> no code whatsoever for the debug/trace window, but Matt Lewis has
> managed to add a trace window for his OOEU on wxWindows project. It
> would be possible to send messages back and forth between a modified
> eu.ex and Edita, to make the latter behave like it is trace(), but
> this is a big complex project. Using eu.ex, performance is a worry,
> but someone (else) could one day buy the source and repackage up
> replacement ex.exe/exw.exe, once it is all working in the pd source,
> unless Rob vetoes that.
>
> If you take a look at eama.e and the corresponding routine CD_message
> in edita.exw, it should show you how a second app might communicate
> with Edita to allow it to behave as a debugger. Of course you'd need a
> modified eama.e that uses other, new, messages besides CD_CONS etc.
>
> Regards,
> Pete
>
>
Woa Nelly. Do I have until dinner to digest all that .
Thanks again Pete. One day, I'l be able to throw someting like that at you,
then, watch out.
Regards
Serge
When all you have is a hammer, everything starts to look like a nail.
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