Memory Leak on export png????

[Jim Ault]

On 3/16/07 10:25 AM, "Dave" <dave at looktowindward.com> wrote:

> Please take a look at the handler copied below. This is an adaptation
> of Ian Wood's "export snapshot.rev" stack that can be downloaded from
> Rev Online.

> I also tried this without setting the background color and this does
> write all 500 files, but RunRev crashes  (unexpectedly quits) doing
> something unrelated a short while later. Also when this is running,
> the first 50 to 100 files go quite quickly but after that it starts
> to slow down.
> 
> Has anyone else seen this? I'm running on a Mac Pro, Mac OS 10.4.9
> RunRev 2.8.0.350.
> 
> I really need to get this to work correctly as I have do another demo
> next week and this is 90% of it!
I don't do much of this, but there are a couple bug reports dealing with
import, export and images.  You might check this out before building too
much on something that is not fixed yet.

The slow down part is probably related to the Mac Finder and the HD maint.
I see the same type of  speed change writing text files on WinXP.

You might see if 
-- adding a slight wait of 30 milliseconds helps Rev
-- exporting from a substack that you close out of Rev memory and thus maybe
purge a dangling heap address in the subStack (possible cause of a crash)

--re-think the demo as a beta that runs slower
--run as a slower-timed background process

--does the crash occur if tested by exporting to a single variable
repeatedly, thus not dealing with the hard drive file writing

Of course, there may be a more robust way of doing this with an AppleScript
app as an agent.

Hope this helps

Jim Ault
Las Vegas