Kamil Dudka wrote:
> > Daniel says that the io operation can in fact block anyway, when the
> > socket is in blocking mode.
>
> Can you reference any specification saying otherwise?
Do man pages count? I've quoted a few, earlier in the thread. Mikhail
also quoted SUSv3 IIRC, which seemed to agree with the Linux select(2)
man page.
--8<-- Linux select(2)
DESCRIPTION
select() and pselect() allow a program to monitor multiple file
descriptors, waiting until one or more of the file descriptors become
"ready" for some class of I/O operation (e.g., input possible). A file
descriptor is considered ready if it is possible to perform the corre‐
sponding I/O operation (e.g., read(2)) without blocking.
-->8--
The paragraph "Select Law" in Linux select_tut(2) clarifies a little
further.
//Peter
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