Re: wgetch_events blocks unnecessarily

[Thomas Dickey]

On Thu, 25 May 2006, Bernd Jendrissek wrote:

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> I gather that nobody is actually using wgetch_events(), since I have had

that's probably right - it's only an experimental option with no 
documentation (other than ncurses/README.IZ) and no demonstration or
test-program.  So I didn't add a configure option for it...

thanks for the bug-report

> to patch lib_twait.c to make it work at all.  Basically
> _nc_eventlist_timeout() and _nc_timed_wait() are using an inappropriate
> level of indirection (one too many) for their _nc_event pointer
> variables.  Sorry, I don't want to contribute a patch irresponsibly
> without getting the copyright ducks in a row; maybe some other
> unencumbered eager beaver can recreate the fix.  Oh, and there's a

;-)

> missing "ev++;" without which _nc_eventlist_timeout() goes into an
> infinite loop.  There's also the problem of _nc_timed_wait()
> misreporting what events are available; if there is no SP->_mouse_fd
> then the return code "mode" bitmask gets populated with "2" (mouse input
> ready) when really it's my serial port that has data.
>
> Now I'm finding that wgetch_events() is blocking on terminal input,
> which of course is a problem if I also expect input from a serial port.
> I'm tracking that down right now... expect more mail later.
>
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--
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net