Date: Thu, 30 Dec 2004 02:56:17 +0000 (UTC) From: David Xu <davidxu@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/sys umtx.h src/sys/kern kern_umtx.c Message-ID: <200412300256.iBU2uHuN071595@repoman.freebsd.org>
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davidxu 2004-12-30 02:56:17 UTC
FreeBSD src repository
Modified files:
sys/sys umtx.h
sys/kern kern_umtx.c
Log:
Make umtx_wait and umtx_wake more like linux futex does, it is
more general than previous. It also lets me implement cancelable point
in thread library. Also in theory, umtx_lock and umtx_unlock can
be implemented by using umtx_wait and umtx_wake, all atomic operations
can be done in userland without kernel's casuptr() function.
Revision Changes Path
1.25 +9 -41 src/sys/kern/kern_umtx.c
1.9 +7 -9 src/sys/sys/umtx.h
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