Date: Thu, 5 Dec 2013 18:20:58 +0100 From: Michael Gmelin <freebsd@grem.de> To: Konstantin Belousov <kostikbel@gmail.com> Cc: David Chisnall <theraven@freebsd.org>, Brooks Davis <brooks@FreeBSD.org>, Dimitry Andric <dim@FreeBSD.org>, Matthias Andree <mandree@FreeBSD.org>, "freebsd-ports@freebsd.org Ports" <freebsd-ports@freebsd.org> Subject: Re: Position independent code and global destructor order (devel/ice) Message-ID: <20131205182058.5479b1ff@bsd64.grem.de> In-Reply-To: <20131205170728.GF59496@kib.kiev.ua> References: <6900C006-2A57-4EAF-B19A-629A85CBA001@FreeBSD.org> <20130626210534.GY91021@kib.kiev.ua> <A60BFADA-E358-4363-8BED-E154AB327C6B@FreeBSD.org> <20130626231741.497f7a9b@bsd64.grem.de> <20130626212833.GB91021@kib.kiev.ua> <20130627015602.7a437aad@bsd64.grem.de> <51CC411C.4060105@FreeBSD.org> <20130627140428.GI91021@kib.kiev.ua> <20130827144507.385a552c@bsd64.grem.de> <20131130223427.3d95ae7c@bsd64.grem.de> <20131205170728.GF59496@kib.kiev.ua>
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On Thu, 5 Dec 2013 19:07:28 +0200 Konstantin Belousov <kostikbel@gmail.com> wrote: > If you provided link to the original discussion, it would take much > less energy and time to refresh the memory. Forgot to include it, sorry. Thanks for you response and the patch. > > I looked over this, and I think that r211706 can be refined, by only > calling atexit hooks for 'wrong' dso when the call to __cxa_finalize() > is from the real dlclose(), as opposed to the process exit. For me, > with the world where the patch is applied, your 'major tom' test > passes. Makes sense. > > Of course, when dso1 registers __cxa_atexit hook located in dso2, and > dso2 is unloaded before dso1, the hooks are called in the wrong order > still, but the only alternatives there are either crash or do not call > such hooks at all. Sounds like a good solution. PHP (and similar) crashes are avoided while clean code isn't affected. I will try the patch in my specific use case to make sure it works there as well. -- Michael Gmelin
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