Date: Mon, 1 Nov 1999 15:53:02 -0500 (EST) From: Daniel Eischen <eischen@vigrid.com> To: Nate Williams <nate@mt.sri.com> Cc: "Justin T. Gibbs" <gibbs@freebsd.org>, Julian Elischer <julian@whistle.com>, freebsd-arch@freebsd.org Subject: Re: Threads models and FreeBSD. Message-ID: <Pine.SUN.3.91.991101153827.20619B-100000@pcnet1.pcnet.com> In-Reply-To: <199911012002.NAA18597@mt.sri.com>
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On Mon, 1 Nov 1999, Nate Williams wrote: > > What about being able to push and pop cleanup handlers in the > > kernel? It's not quite as elegant as exception handlers, but > > would it accomplish what you want? > > I think the complexity would be much greater, but maybe I don't > understand fully what you are saying. > > Can you give a simple code example? see man pthread_cleanup_push(3). If a kernel thread were abnormally terminated it would run down its list of cleanup handlers to free held resources. Another method is to try and make resources knowledgeable about their owner(s), and for each thread to maintain a list of held resources. If a thread exits abnormally, it's easy enough to walk the list and free the held resources. Dan Eischen eischen@vigrid.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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