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Date:      Thu, 23 Mar 2000 01:08:25 +1030
From:      Mark Newton <newton@internode.com.au>
To:        Arun Sharma <adsharma@sharmas.dhs.org>
Cc:        Marcel Moolenaar <marcel@scc.nl>, Peter Wemm <peter@netplex.com.au>, current@FreeBSD.ORG
Subject:   Re: ucontext
Message-ID:  <20000323010825.A93949@internode.com.au>
In-Reply-To: <20000321225432.A4533@sharmas.dhs.org>
References:  <19990907103348.2801F1CA8@overcee.netplex.com.au> <37D4F557.F4F743E7@scc.nl> <20000321225432.A4533@sharmas.dhs.org>

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On Tue, Mar 21, 2000 at 10:54:32PM -0800, Arun Sharma wrote:

 > > > Before getting too far here, can we consider some other
 > > > standard interfaces?
 > > >      #include <ucontext.h>
 > > >      int getcontext(ucontext_t *ucp);
 > > >      int setcontext(const ucontext_t *ucp);
 > > >      void makecontext(ucontext_t *ucp, (void *func)(), int argc, ...);
 > > >      int swapcontext(ucontext_t *oucp, const ucontext_t *ucp);
 > > > http://www.opengroup.org/onlinepubs/007908799/xsh/ucontext.h.html
   [ ... ]
 > Is anyone working on this ? Porting JDKs to FreeBSD would be a lot easier
 > if these routines are implemented.

If it helps at all, these are (approxmiately :-) implemented in the 
svr4 emulator.  

I'm not sure that svr4_setcontext() is doing entirely the right thing,
and there are some holes related to signal mask handling (which might 
be related to the "entirely the right thing" bit), but it's a start.

    - mark

-- 
Mark Newton                               Email:  newton@internode.com.au (W)
Network Engineer                          Email:  newton@atdot.dotat.org  (H)
Internode Systems Pty Ltd                 Desk:   +61-8-82232999
"Network Man" - Anagram of "Mark Newton"  Mobile: +61-416-202-223


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