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- Subject: Re: memory fragmentation
- From: erik@... (Erik Hougaard)
- Date: Sat, 10 Jul 1999 00:59:53 +0200
Adam Wozniak wrote:
> I just spent several hours reviewing the list archive, and I
> know this has been asked here in various forms, but I couldn't
> find a direct answer, so here goes...
> I'm evaluating LUA for use as a script language in an embedded processor
> environment. The unit most remain in operation for very long periods of
> time. We have only 64K of RAM to work with.
> We are very concerned about memory fragmentation.
> The "standard" way of dealing with this is to use a double pointer or
> "handle" method where the underlying operating environment can reshuffle
> objects in memory pretty much at will. An example frequently cited in
> the list archive was PalmOS.
> What sorts of mechanisms does Lua have to support this?
We are working on the same, these are my observations:
1. Lua works of the ANSI malloc ralloc functions - the quality of these
functions are a good indicator of the lua speed/quality.
2. Lua uses some standard IO for error (That has been changed in 3.2) -
you must change this to your way of handling errors..
3. Lua uses ZIO (a file IO library) - all these functions must be
rewritten to support flash/eprom etc...
But it can be done :-)