Re: idea of vision of blueprint of ROADMAP of Lua core

[Eric Scouten <scouten@...>]

Wim Couwenberg wrote:

> > Even better: what could be removed? (Half-joking :o)
>
>
> My tentative list:
>
> -  coroutines (is there *anyone* at all who agrees??  :-)  )

Ummm... probably not. Let me be another voice speaking up in defense of 
coroutines. Our application initially made heavy use of preemptive 
multithreading and a single Lua universe. We found that we wound up 
spending a *lot* of time in mutex (un)lock calls. This penalty 
outweighed the purported benefits of preemptive multithreading. We have 
since moved to allowing only a single thread per Lua universe with heavy 
use of coroutines to handle much of our "background" processing. This 
has both improved the performance of our application significantly and 
dramatically reduced the amount of head-scratching we do about threading 
issues. :-) We continue to use other threads, but their use is now 
restricted to CPU-intensive tasks that are easily disconnected from the 
rest of the system.

-Eric