Date: Thu, 30 Mar 2006 20:25:52 +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 Message-ID: <200603302025.k2UKPqs8072476@repoman.freebsd.org>
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jasone 2006-03-30 20:25:52 UTC FreeBSD src repository Modified files: lib/libc/stdlib malloc.c Log: Optimize runtime performance, primary using the following techniques: * Avoid choosing an arena until it's certain that an arena is needed for allocation. * Convert division/multiplication to bitshifting where possible. * Avoid accessing TLS variables in single-threaded code. * Reduce the amount of pointer dereferencing. * Move lock acquisition in critical paths to only protect the the code that requires synchronization, and completely remove locking where possible. Revision Changes Path 1.120 +294 -285 src/lib/libc/stdlib/malloc.c
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