Date: Tue, 08 Jul 2008 06:09:46 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Sergey Babkin <babkin@verizon.net> Cc: arch@FreeBSD.org, Robert Watson <rwatson@FreeBSD.org> Subject: Re: Proposal: a revoke() system call Message-ID: <701.1215497386@critter.freebsd.dk> In-Reply-To: Your message of "Mon, 07 Jul 2008 16:56:33 EST." <29793635.342951215467793639.JavaMail.root@vms126.mailsrvcs.net>
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In message <29793635.342951215467793639.JavaMail.root@vms126.mailsrvcs.net>, Se rgey Babkin writes: >>If the only reason we are dicussing this, is that people find the >>magic pipe to select ugly, then I would even argue that we have not >>reached critical mass for even thinking. > >Well, there are a couple of problems with magical pipes: > >1. It means using 3 times as many file descriptors. (One for the original >socket, and 2 for the ends of the pipe). > >2. When working with the 3rd-party libraries, it requires a substantial rework of these >libraries. Getting a file decriptor from inside the library's implementation >and forcing it to close is a lot less invasive and can be done with a simple >API wrapper. What you're proposing to do in the kernel isn't any less complicated :-) -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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