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From: David Xu <davidxu@FreeBSD.org>
Date: Wed, 2 Apr 2008 04:08:37 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: HEAD
Cc: 
Subject: cvs commit: src/sys/sys umtx.h src/sys/kern kern_umtx.c
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davidxu     2008-04-02 04:08:37 UTC

  FreeBSD src repository

  Modified files:
    sys/sys              umtx.h 
    sys/kern             kern_umtx.c 
  Log:
  Introduce kernel based userland rwlock. Each umtx chain now has two lists,
  one for readers and one for writers, other types of synchronization
  object just use first list.
  
  Asked by: jeff
  
  Revision  Changes    Path
  1.65      +487 -45   src/sys/kern/kern_umtx.c
  1.31      +21 -1     src/sys/sys/umtx.h