Alan Cox wrote:
quoted text
> > Or, maybe the userspace program can receive some sort of interrupt
> > from the TTY device when it is ready for I/O.
> > 
> > Perhaps there is another way to avoid continued polling?
> 
> TIOCMIWAIT ioctl for modem signals, and just using poll/select() on the
> tty for I/O.

Ah yes, the undocumented ioctl...  I knew there was one, just couldn't
find it in the man page just now.

-- Jamie
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