Re: lua threads the luabind way

You can prevent a thread from being collected the same way as any other
value, just put a reference to it in the registry. When done with it, remove
the reference and let Lua take care of the rest.

On Tue, Oct 12, 2010 at 3:23 PM, Szymon Gatner <[email protected]>wrote:

> Hi,
>
> Couple of questions regarding usage of Lua threads with luabind:
>
> - What is the proper way of taking care of thread's lifetime? Lua docs
> say that after
> lua_newthread() call, thread is pushed on the Lua stack and is a
> subject to the garbage
> collection. How to make sure that thread is not collected when it is
> still used and
> how to finally get rid of it?
>
> - Lua docs also say that lua_resume() "returns LUA_YIELD if the
> coroutine yields,
> 0 if the coroutine finishes its execution without errors, or an error
> code in case of errors".
> Yet, (if I understand correctly) there is no way of knowing if thread
> yielded or finished
> with luabind::resume_function or luabind::resume because it only
> forwards return code
> of function being called in the thread and not the return value of
> lua_resume().
>
> Atm I am using a workaround like this:
>
> luabind::resume<void>(coro_);
>
> if (lua_status(coro_) == LUA_YIELD) { ... }
>
> what is a better / proper way to do this?
>
> - Functions called from the thread do not use pcall error calback
> registered
> earlier in "master state". Is that expected behavior?
>
> Please help.
>
> Regards,
> Szymon Gatner
>
>
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