[xmonad] Multiple threads

[Ernesto Rodriguez]

Oh well, thank you for the reply :) I am trying to do some networking stuff
in the X Monad. Do you think there is some workaround such that I do the
networking in an additional thread and then when it is done I fire some X11
event that XMonad can be programed to handle and then it can read the data
recovered from the network and display it?

Thanks

On Sat, Nov 21, 2015 at 10:07 PM, Brandon Allbery <allbery.b at gmail.com>
wrote:

>
> On Sat, Nov 21, 2015 at 4:59 PM, Ernesto Rodriguez <neto at netowork.me>
> wrote:
>
>> When I attempt doing things like that, I usually get a deadlock. Is there
>> any way to do this (I know, X is old :( but no harm in asking).
>
>
> You can't, no, X11 is essentially incapable of it. (To the extent that
> gtk2/3 has hacks to forward stuff to the main thread.)
> Individual threads can open their own connections, a trick you'll see in
> various contribs, but you can't share stuff between them; the best you
> could do is send clientMessages from one thread to the other.
>
> (X11 has a call to "enable" multithreading. This wraps a Big Global Lock
> around all of X11. Even if you're using xcb, apparently, since if xcb could
> do it properly gtk wouldn't go to such lengths to avoid it.)
>
> --
> brandon s allbery kf8nh                               sine nomine
> associates
> allbery.b at gmail.com
> ballbery at sinenomine.net
> unix, openafs, kerberos, infrastructure, xmonad
> http://sinenomine.net
>



-- 
Ernesto Rodriguez

Masters Student
Computer Science
Utrecht University

www.netowork.me
github.com/netogallo
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