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Subject: [Bug 200138] [PATCH] Fixed per-thread 'specific' array allocation
 conflict incurred in libthr by some foreign malloc libraries
Date: Wed, 13 May 2015 07:46:16 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=200138

--- Comment #17 from Konstantin Belousov <kib@FreeBSD.org> ---
(In reply to yuri from comment #16)
I am not sure what 'mapped block of size 128K you mean.  A new thread gets
allocated the stack, which has 1M or 2M size, and struct pthread of size 640B
on 32bit arches.  I already proposed to put the keys table into the struct
pthread, which you did not liked.

I still think that making struct pthread and keys live together is the best
route if malloc() has to be avoided from pthread_setspecific().  I am also fine
with the mmap() patch, despite the fact that some portion of the whole page is
wasted.  I do not want to write a special allocator for this single purpose.

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