svn commit: r185369 - in head: lib/libc/gen lib/libthr/thread
rink at FreeBSD.org
Thu Nov 27 03:30:59 PST 2008
On Thu, Nov 27, 2008 at 11:28:00AM +0000, Konstantin Belousov wrote:
> Author: kib
> Date: Thu Nov 27 11:27:59 2008
> New Revision: 185369
> URL: http://svn.freebsd.org/changeset/base/185369
> Add two rtld exported symbols, _rtld_atfork_pre and _rtld_atfork_post.
> Threading library calls _pre before the fork, allowing the rtld to
> lock itself to ensure that other threads of the process are out of
> dynamic linker. _post releases the locks.
> This allows the rtld to have consistent state in the child. Although
> child may legitimately call only async-safe functions, the call may
> need plt relocation resolution, and this requires working rtld.
> Reported and debugging help by: rink
> Reviewed by: kan, davidxu
> MFC after: 1 month (anyway, not before 7.1 is out)
Rink P.W. Springer - http://rink.nu
"Anyway boys, this is America. Just because you get more votes doesn't
mean you win." - Fox Mulder
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