Date: Sun, 15 Jul 2007 16:51:38 -0700 From: Julian Elischer <julian@elischer.org> To: Ed Schouten <ed@fxq.nl> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: add closefrom() call Message-ID: <469AB30A.5000001@elischer.org> In-Reply-To: <20070715211549.GB39075@hoeg.nl> References: <de5dfb5a0707041727j3e3518f9l5a019717a9f90aa@mail.gmail.com> <20070705122650.GE1302@britannica.bec.de> <468E16E6.6030608@delphij.net> <20070706112453.GA3217@hoeg.nl> <468E7007.5050607@elischer.org> <20070715211549.GB39075@hoeg.nl>
next in thread | previous in thread | raw e-mail | index | archive | help
Ed Schouten wrote: > * Julian Elischer <julian@elischer.org> wrote: >> Ed Schouten wrote: >>> Wouldn't it be better to just implement it through fcntl() and implement >>> closefrom() in libc? >> that's a possibility but I personally thing the huge difference in >> efficiency >> makes it worth putting it in the kernel. >> Quite a few programs I know of could really help their startup time with >> this as the first thing they do is "close the first 2000 file descriptors. > > Woops! Sorry for responding this late, but it looks like I didn't > explain myself good enough. Sorry. :) To rephrase myself: > > Wouldn't it be better to just implement fcntl(..., F_CLOSEM, ...) in the > kernel and make closefrom() a simple libc routine: > > void > closefrom(int lowfd) > { > fcntl(lowfd, F_CLOSEM, NULL); > } > what on earth would that achieve? (as opposed to just a simple syscall) > Similar to creat(2). >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?469AB30A.5000001>