Subj : Re: Threading and Timeouts
To   : comp.programming.threads
From : Giancarlo Niccolai
Date : Wed Jul 20 2005 12:47 pm

Joe Seigh wrote:

> MC wrote:
>> Hi all,
>> 
>
> Use non-blocking i/o with select() or poll().  Or just indicate i/o
> has timed out without "canceling" it, just let the i/o complete normally.
> Socket connections can't be shutdown instantaneously anyway.
> 
> 

Actually, I found that blocking i/o with select or poll works fine. Once
select returns signaling that a socket can be read/written, a single
read/write operation is GUARANTEED not to block; that's exactly what select
is for. However, when using nonblocking sockets on select() loops I
observed some weird behavior in some systems (i.e. older linuxes).

To my best knowledge, non-blocking sockets are a mean to poll a single
socket from your program without selecting it.

Bests,
Giancarlo Niccolai

.