CVS commit: [newlock] syssrc/sys

[Jason R Thorpe <thorpej%netbsd.org@localhost>]

Module Name:    syssrc
Committed By:   thorpej
Date:           Thu Mar 14 17:11:03 UTC 2002

Modified Files:
        syssrc/sys/conf [newlock]: files
Added Files:
        syssrc/sys/kern [newlock]: kern_rwlock.c
        syssrc/sys/sys [newlock]: rwlock.h

Log Message:
Reader/writer lock implementation, modeled after the Solaris rwlocks,
a description of which can be found in:

        Solaris Internals: Core Kernel Architecture, Jim Mauro and
            Richard McDougall, section 3.6.

XXX Does not currently distinguish between waiting readers and
    waiting writers.
XXX Because of above, does not yet implement direct-handoff.


To generate a diff of this commit:
cvs rdiff -r1.500.2.2 -r1.500.2.3 syssrc/sys/conf/files
cvs rdiff -r0 -r1.1.2.1 syssrc/sys/kern/kern_rwlock.c
cvs rdiff -r0 -r1.1.2.1 syssrc/sys/sys/rwlock.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.