cvs commit: src/share/man/man9 kthread.9

[John Baldwin]

On Friday 24 September 2004 05:34 pm, Julian Elischer wrote:
> John Baldwin wrote:
> >On Friday 24 September 2004 03:58 pm, Joerg Wunsch wrote:
> >>joerg       2004-09-24 19:58:47 UTC
> >>
> >>  FreeBSD src repository
> >>
> >>  Modified files:
> >>    share/man/man9       kthread.9
> >>  Log:
> >>  Document that kthread_exit()ing will cause a wakeup(9) on the thread
> >>  handle.
> >>
> >>  MFC after:      1 week
> >
> >It's not the thread handle, it's the proc pointer:
> >
> >        /*
> >         * If this is a kthread, then wakeup anyone waiting for it to
> > exit. */
> >        if (p->p_flag & P_KTHREAD)
>
> could be an idea to use something thread specific as it is possible that
> kernel therads may some day become actual threads
> in one "kernel" process.  The things that stop this at the moment
> include that there is no p_comm field in a thread so
> 'ps' would ahve nothing to show to identify what the threads were..  I
> have been considerring adding a td_desc
> field to threads to be used in teh same way...

Actually what I'm leaning towards is changing kthread_exit() to accept a 
pointer to a condition variable and doing a cv_broadcast() on that condition 
variable before calling exit1().  This allows the caller to better control 
what actual wakeup is done.  I would like to have a thread name field as well, 
btw, but I would prefer it be called td_comm for histerical raisins.

-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org