Re: embedding lua in a multithreaded application

[Marc Balmer <marc@...>]

Am 18.04.15 um 21:58 schrieb Nick Hildebrant:

> I am wanting to use lua in a multithreaded application, and I can find
> lots of information about how to do threaded / psuedo threaded things in
> Lua, but this is not what I am looking for. My understanding is, that
> the interpreter/jit is single threaded, and I want to know how to ensure
> that I am not blocking my multithreaded app by executing all my scripts
> in a single thread.
> 
> If it helps, my goal is to use LuaJIT with ZeroMQ, and have zmq manage
> the parallel workflow of a bunch of services written in Lua. I have
> looked at the wrapper lua-zmq, and I assume this is using lua in a truly
> multithreaded way, but I don't know how to confirm. What is the trick,
> what do I look for? Do we have to start an interpreter in every thread,
> or is it enough just to create a new state?
> 
> When I look at the C code where people are embedding Lua in their
> programs, I don't ever really see something that looks like "the
> interpreter starts running here", just setting up a new Lua state.
> 
> Is using the LuaJIT to wrap zmq the same as embedding LuaJIT in a
> program which links against ZMQ?
> 
> I am happy to read more, I don't need anyone to write a book here, but
> when I google "mutlithreaded Lua" I get a bunch of answers to a
> different question (namely, "how to i make my lua script
> multithreaded?") which doesn't interest me at all. I actually want to
> write single threaded Lua code which will execute in the multithreaded
> message passing way which ZeroMQ manages so well.

For a starting point and maybe to steal some ideas you can look at
https://github.com/mbalmer/mqlua