Re: [MACTCL] Problems porting program to Mac -- thoughts?

[Ryan C. <sc...@ho...>]

> >    Posted to c.l.t and tcl-mac mailing  list.   Wish 8.3.3 on MacOS 9.0
> >(ppc).   I am starting to port my program to Mac.   After finding how to
> >make an executable and adding some mac-specific stuff to my  OS-specific
> >sections, it seems to work ok (it at least loads :) ).   I am having the
> >following problems:   My program revolves around up to about 120 (maybe a
> >bit more) photo images being moved around three canvases.  Sometimes I
can
> >load up to about 30, but more than that always seems to crash Wish.
> >bgerror does not catch it, and sometimes an 'Error 25' is  displayed.
>
>
> Welcome to classic MacOS ( < OS X ) :p

Thanks :-\

> ID 25 means QuickDraw, the graphics layer in the OS, could not get RAM to
> satisfy a need that was graphics related.  QD is written in a very
> "optimistic" style which means, there's not much in the way of error
> reporting.

Ah, glad somebody knows.  Thanks for the quick answer!

> I will go out on a limb and guess that the "partition size" or "memory
> allocation" for your Tcl app (or Tcl shell that in turn runs your code) is
> not high enough for its needs.  Which jibes with the problem description.

> The way you would increase the amount of RAM available to Wish:
> a. select the Wish executable icon
> b. hit Get Info in the FInder (command-I)
> c. click on the popup and change to "memory"
> d. adjust to suit.

Worked great, except apparently my Mac doesn't have enough memory :-)

>    I would recommend ZoneRanger as an excellent tool for watching the
> shell's real memory usage within its heap in real time. You can download
it
> here: http://www.metrowerks.com/tools/software/zoneranger/

This got up to 24MB memory on my app before it crashed and the zone was
destroyed.

I can't see how it could be using that much memory...each of these images is
~3k in size.  The Tk control structures, etc, would take more room, but that
much???  It gets nowhere near this size on PC or Unix.

Does Mac Classic have virtual (disk cache) memory at all?  Should I just
give up and work on the OSX port (especially with OS10.1 coming out soon)?

Thanks

Ryan