Question: event hook on new_thread/new_work?

[wbthomason]

Is there a way for embedders to get a callback on new_thread or new_work? This would be useful for for e.g. modifying _G in the thread's lua_State.

It seems as though #350 may already provide this, but I don't see a way to determine (in the lua_CFpcall callback) from where the callback has been called. Perhaps this could be a new flag, e.g. LUVF_CALLBACK_NEWTHREAD, indicating to the callback implementer that it should (if desired) perform initialization work on the provided lua_State?

[wbthomason]

Also, just to note: I'd be happy to put together a PR for this if it seems like a desirable feature and a reasonable approach. I can also give more details on the motivation for the feature.

[shaunsingh]

Bumping this, Saw this issue earlier after some confusion about asynchronous code in neovim. It would be nice to have proper multithreading for those few tasks that really benefit from it