Re: Is there an easier way to cancel threads???

[Doug Rogers <rogers@...>]

Diego Nehab wrote:

>> [Now you know why I'm so fond about non-pre-emptive approaches.]
> Dude, it's not like LuaThread is my favourite child. :) I
> don't know why people like threads...

I have come to the conclusion that preemptive threading was created not
to support blocking calls but instead to support computer science
master's degrees!

> We can use a condition variable and a counter to make sure
> we only exit lua_close when all threads are done. Is this a
> good solution? I think it is ok.

That's what I did in my own threading library. My 'tasks' use post() and
read() in a way similar to resume() and yield(). Each task has a pthread
condition variable + mutex in the C backend. When it dies it signals the
main counting semaphore for the tasking library. I never linked it in
with lua_close(), though. That would have been smart. I'm not terribly
satisfied with my approach, but it worked for a few fun cases.

The next time I think I need preemptive threading in Lua I will use
someone else's better design.

Doug

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Doug Rogers - ICI - V:703.893.2007x220 www.innocon.com
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