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Date:      Sun, 8 Mar 1998 13:57:51 +1100 (EST)
From:      John Birrell <jb@cimlogic.com.au>
To:        mike@smith.net.au (Mike Smith)
Cc:        jb@FreeBSD.ORG, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG, cvs-lib@FreeBSD.ORG
Subject:   Re: cvs commit: src/lib/libc_r/uthread pthread_private.h uthread_yield.c
Message-ID:  <199803080257.NAA10467@cimlogic.com.au>
In-Reply-To: <199803080250.SAA08053@dingo.cdrom.com> from Mike Smith at "Mar 7, 98 06:50:16 pm"

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Mike Smith wrote:
> > jb          1998/03/07 18:37:28 PST
> > 
> >   Modified files:
> >     lib/libc_r/uthread   pthread_private.h uthread_yield.c 
> >   Log:
> >   Add sched_yield() witch is the draft 10 equivalent of pthread_yield()
> >   from draft 4. Move some of the schedule definitions to sched.h which
> >   is a POSIX header.
> 
> Is this going to conflict with the upcoming sched_yield() syscall?

No. That will just gets renamed to _thread_sys_sched_yield() (and ignored)
when built into libc_r.

The syscalls yield, thr_sleep and thr_wakeup all need work (and preferably
renaming to add underscores before their names to keep the user namespace
clean) to provide a POSIX kernel thread implementation. I have a prototype
for this, but currently no way of getting the running thread back to
user-space reliably (my implementation only works 95% of the time 8-().

-- 
John Birrell - jb@cimlogic.com.au; jb@freebsd.org
CIMlogic Pty Ltd, GPO Box 117A, Melbourne Vic 3001, Australia +61 418 353 137

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