Re: Lua shared between processes
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- Subject: Re: Lua shared between processes
- From: George Sealy <george@...>
- Date: 2004年3月18日 08:38:03 +1300
Hi all,
Thanks for the feed back. I've found some source code for a version of
malloc/free by Doug Lea, at:
http://g.oswego.edu/dl/html/malloc.html
It's fairly fine tuned code, but hopefully it'll be good enough to give
me sufficiently fast memory allocation. However, if anyone out there
knows of simpler versions of malloc to implement, I'd be grateful for
any links...
Thanks
George
Joshua Jensen wrote:
From: lua-bounces@bazar2.conectiva.com.br
[mailto:lua-bounces@bazar2.conectiva.com.br] On Behalf Of
Richard Ranft
I don't know about the Lua internals, but for a memory
management system I'd look into something like the
frame-based memory system described by Steven Ranck in Game
Programming Gems vol.1 on page 92. This system lends itself
fairly well to gc and dynamic allocation.
The frame based allocation approach doesn't maintain headers for the
individual memory allocations. In this way, it is more efficient for
allocation and freeing of blocks of memory. Unfortunately, the extra
performance (both speed and size) doesn't lend itself well to the dynamic
memory allocation Lua performs. Lua's memory blocks come in all shapes and
sizes, and they are never freed in a consistent sequential order. The frame
based approach would only work well if Lua allocated a whole bunch of memory
and then freed it in reverse order. With the way Lua is architected and the
dynamic nature of the scripts it runs, I'm certain this couldn't work for
Lua 5.0.
Josh
--
George Sealy, PhD email : george@arl.co.nz
Software Developer / Architect phone : +64 3 477 2995
Animation Research Ltd