ports/144760: sysutils/tmux: shell not working in tmux any more
gary.jennejohn at freenet.de
Wed Mar 17 12:06:40 UTC 2010
On Wed, 17 Mar 2010 12:05:08 +0200
Andriy Gapon <avg at icyb.net.ua> wrote:
> on 17/03/2010 04:46 wen heping said the following:
> > Hi,
> > Would you test this patch ?
> > If it works, I shall commit it.
> I think that it would be interesting/useful to understand in what respect FreeBSD
> kqueue is considered 'broken' by tmux code.
Actually it's the kqueue handling in devel/libevent, which is used by tmux,
which considers our kequeue(2) implementation to be broken.
The code in kqueue.c:kq_init() from libevent calls kevent() [kqueue(2)]
with nchanges=1 and nevents=64. It assumes that kevent() will always
return 1 on success. According to kqueue(2) kevent will return up to
nevents on success. I'm not sure whether our kevent() should return 1
because nchanges=1 or not.
So the question is whether kq_init() is making a bad assumption or not.
In any case it seems that devel/libevent should be fixed, if necessary,
rather than applying a bandaid to tmux.
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