Date: Mon, 16 Jun 2008 23:42:05 +0000 (UTC) From: Jason Evans <jasone@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/lib/libc/stdlib malloc.c rb.h Message-ID: <200806162342.m5GNgFTU024655@repoman.freebsd.org>
next in thread | raw e-mail | index | archive | help
jasone 2008-06-16 23:42:05 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_7)
lib/libc/stdlib malloc.c
Added files: (Branch: RELENG_7)
lib/libc/stdlib rb.h
Log:
SVN rev 179836 on 2008-06-16 23:42:05Z by jasone
MFC allocator improvements and fixes:
* Implement more compact red-black trees, thus reducing memory usage
by ~0.5-1%.
* Add a separate tree to track dirty-page-containing chunks, thus
improving worst case allocation performance.
* Fix a deadlock in base_alloc() for the error (OOM) path.
* Catch integer overflow for huge allocations when using sbrk(2).
* Fix bit vector initialization for run headers. This fix has no
practical impact for correct programs. Incorrect programs will
potentially experience allocation failures rather than memory
corruption, both of which are "undefined behavior".
Revision Changes Path
1.147.2.3 +209 -162 src/lib/libc/stdlib/malloc.c
1.4.2.1 +947 -0 src/lib/libc/stdlib/rb.h (new)
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200806162342.m5GNgFTU024655>