On Wed, 27 Nov 2002 21:40:14 +0100 "Johan Nilsson" <[EMAIL PROTECTED]> wrote:
> > >"Darryl Green" <[EMAIL PROTECTED]> skrev i meddelandet > >[EMAIL PROTECTED]">news:[EMAIL PROTECTED] > ... > > [snip] > > > Note man says "regular files" - there are lots of interesting special > files that don't always > > report ready - I/O devices, pipes etc. Also, I think it would be a bad > idea to assume > > that select is the be all and end all of how the socket/file/whatever > ready to handler > > dispatching can be implemented. It ought to be possible to replace a > select based > > dispatcher with one based on async I/O or some other exotic scheme. > > Just adding some comments here. > > Being able to queue _true_ async read/writes on multiple devices (socket, > files, serial devices, pipes, ...), and then wait for any of them to > complete has been absolutely essential to me - much, much more than > non-blocking (which I personally don't like at all), and also more than > multiplexing (select). That's probably why I'm not doing linux programming > if I can avoid it (no flames please). I started out to implement > cross-platform async I/O for NT/linux/VMS, and got a bit on the way before > having to drop the multiplatform support (at least currently) due to > resource limitations (time, mostly). Anyway, one can always fake async i/o > on linux using i/o multiplexing. I also made some attempts on using libaio, > but it didn't seem very mature at the time - maybe one will have to wait for > kernel aio support. Under VMS as well as under NT, the i/o subsystems are > designed as asynchronous, so there are less work there (even though VMS I/O > is not as 'polymorhic' as NT's). > > Regards // Johan The biggest problem is portablity, but it worth a try. ;-) > > _______________________________________________ > Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost -- <[EMAIL PROTECTED]> _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
