Date: Wed, 19 Apr 2006 21:06:52 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern kern_rwlock.c src/sys/sys rwlock.h Message-ID: <200604192106.k3JL6qLq043987@repoman.freebsd.org>
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jhb 2006-04-19 21:06:52 UTC
FreeBSD src repository
Modified files:
sys/kern kern_rwlock.c
sys/sys rwlock.h
Log:
Implement rw_try_upgrade() and rw_downgrade(). rw_try_upgrade() makes a
single attempt at upgrading a read lock to a write lock, and rw_downgrade()
converts curthread's write lock into a read lock.
Revision Changes Path
1.9 +133 -2 src/sys/kern/kern_rwlock.c
1.3 +5 -1 src/sys/sys/rwlock.h
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