Date: Sun, 6 Jan 2002 16:40:46 -0600 From: Alfred Perlstein <bright@mu.org> To: Archie Cobbs <archie@dellroad.org> Cc: Dan Eischen <eischen@vigrid.com>, arch@FreeBSD.ORG Subject: Re: Request for review: getcontext, setcontext, etc Message-ID: <20020106164046.A14427@elvis.mu.org> In-Reply-To: <200201062000.g06K0La35178@arch20m.dellroad.org>; from archie@dellroad.org on Sun, Jan 06, 2002 at 12:00:21PM -0800 References: <20020106032709.A82406@elvis.mu.org> <200201062000.g06K0La35178@arch20m.dellroad.org>
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* Archie Cobbs <archie@dellroad.org> [020106 14:09] wrote: > Alfred Perlstein writes: > > > Is there a reason that getcontext and setcontext need to be > > > system calls? > > > > Atomicity? > > That can't be why.. otherwise this would imply that just because > something is written in assembly instead of C that it could have > atomicity problems. > > BTW, I think this adding these is a great idea.. e.g., the pth port > can take advantage of these as well. http://www.opengroup.org/onlinepubs/007908799/xsh/ucontext.h.html Defines a signal mask switchover, that's why I assumed some degree of atomicity help from the kernel. -- -Alfred Perlstein [alfred@freebsd.org] 'Instead of asking why a piece of software is using "1970s technology," start asking why software is ignoring 30 years of accumulated wisdom.' Tax deductable donations for FreeBSD: http://www.freebsdfoundation.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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