Date: Thu, 12 Jul 2007 00:27:01 +0200 From: Joerg Sonnenberger <joerg@britannica.bec.de> To: freebsd-hackers@freebsd.org Subject: Re: add closefrom() call Message-ID: <20070711222700.GB23838@britannica.bec.de> In-Reply-To: <4693C77E.7070806@elischer.org> References: <46930106.3040503@gmail.com> <20070710123634.GD1194@britannica.bec.de> <4693C77E.7070806@elischer.org>
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On Tue, Jul 10, 2007 at 10:53:02AM -0700, Julian Elischer wrote: > Joerg Sonnenberger wrote: > >On Mon, Jul 09, 2007 at 11:46:14PM -0400, Ighighi wrote: > >>Calling F_MAXFD everytime we close a file descriptor would be heavy > >>having too much fd's. > >>On the other hand, it wouldn't make much a difference to just start from > >>getdtablesize() - 1. > > > >I fully agree. That is the second version of closefrom in DragonFly -- > >for the purpose of libc_r BTW. > > This is silly.. > All the code needed to do this is already in the kernel. > It's needed at exit time. > Make a syscall as a front end to it and be done with it. As I said -- this was done only in libc_r because of the additional constraints of not closing the internal pipe. For any other use case, I full heartedly agree. Joerg
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