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Hi all,

I've been experimenting with Lua for work, and have found it to be just the tool I was looking for. However, I have a problem that I was hoping someone may be able to help me with.

I need to have multiple processes running on a single machine (Win32), all with access to a single instance of a "world state", which I want to describe with Lua. My initial solution was to use shared memory in a dll, which would allow all processes to access the single set of data. However, when I use lua_open to create a new state, I can't see a way to make that pointer be in shared memory... Initially I thought I could create a copy of the Lua state variable, but that'll fall over internally whenever Lua needs more memory.

The only other option I can think of is some form of communication between processes, such as TCP/IP or memory mapping, but the world state needs to be accessed many (hundreds or even thousands of) times a second, so performance is an issue.

If anyone has any advice, I'd really appreciate it. I'd rather avoid rewriting the entire language's memory allocation if I can help it!


George Sealy

George Sealy, PhD                       email :
Software Developer / Architect          phone : +64 3 477 2995
Animation Research Ltd