Subj : Re: pthreads: combine condvar and select
To   : comp.programming.threads
From : Bernhard Roessmann
Date : Wed Jan 12 2005 09:58 am

Phil Frisbie, Jr. wrote:
> You can create a loop-back UDP socket and add it to the other file 
> handles. Then a second thread simply sends a small (or even zero length) 
> UDP packet to 'wake up' the first thread.

Hi Phil,

or some other sort of unix "standard IPC" mechanism, I know.
But this seems to be much overhead for sending a little "event" to the thread.

I'm amazed why pthreads "signaling" is not "select compatible", this would be 
very nice an consistent.

Anyway, seems that I have to use some of the heavier IPC mechanisms for this :-/

BTW: UDP is per definition "unreliable". But I think, UDP over a unix socket 
should be reliable, right?


Regards,

-- 
Bernhard Roessmann
Don't Fear The Penguins!

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