Date: Mon, 30 Jan 2012 11:30:15 +0000 From: Mark Murray <markm@FreeBSD.org> To: Andrey Chernov <ache@FreeBSD.ORG> Cc: src-committers@FreeBSD.ORG, John Baldwin <jhb@FreeBSD.ORG>, svn-src-all@FreeBSD.ORG, svn-src-head@FreeBSD.ORG, David Schultz <das@FreeBSD.ORG>, Mark Murray <markm@FreeBSD.ORG> Subject: Re: svn commit: r230230 - head/sys/dev/random Message-ID: <E1RrpR9-0006D5-To@groundzero.grondar.org> In-Reply-To: <20120129125738.GA26520@vniz.net> References: <E1Rny2A-000C3x-O6@groundzero.grondar.org> <20120126143819.GA88677@vniz.net> <20120126155626.GA92229@vniz.net> <201201261132.38320.jhb@freebsd.org> <20120126165521.GA92622@vniz.net> <20120126175243.GA19199@zim.MIT.EDU> <20120126181340.GA93157@vniz.net> <20120129125738.GA26520@vniz.net>
next in thread | previous in thread | raw e-mail | index | archive | help
Andrey Chernov writes: > On Thu, Jan 26, 2012 at 10:13:41PM +0400, Andrey Chernov wrote: > > On Thu, Jan 26, 2012 at 12:52:43PM -0500, David Schultz wrote: > > > Why complicate things with atomics at all? A race might result in > > > arc4random(9) being seeded multiple times, but that's harmless. > > > > Multiply seeding in line is harmless, just waste of time and resources. > > Other case is one missing seeding when variable is set concurrently with > > its read. I see no complication using atomic. Latest version is even > > shorter than previous ones. > > Well, I almost forget about my special case: I have personal prohibition > from @secteam (5 years old already) to commit anything to all RNG areas. > > So, the question is: could anyone of you commit some version from this > thread, please? Sure; I'll do it. Please give me your test code/cases. > I don't insist of atomics in this sutuation, so you can peek any version > you like. I'll need to clearly see what works. M -- Mark R V Murray Cert APS(Open) Dip Phys(Open) BSc Open(Open) BSc(Hons)(Open) Pi: 132511160
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?E1RrpR9-0006D5-To>