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3 Commits

Author SHA1 Message Date
Attilio Rao
f9721b43ed Expand lock class with the "virtual" function lc_assert which will offer 
an unified way for all the lock primitives to express lock assertions.
Currenty, lockmgrs and rmlocks don't have assertions, so just panic in
that case.
This will be a base for more callout improvements.

Ok'ed by: jhb, jeff
 2007-11-18 14:43:53 +00:00
Robert Watson
433ea89af4 Add rm_wowned(9) function to test whether the current thread owns an 
exclusive lock on the passed rmlock.

Reviewed by:	ups
 2007-11-10 15:06:30 +00:00
Stephan Uphoff
f53d15fe1b Initial checkin for rmlock (read mostly lock) a multi reader single writer 
lock optimized for almost exclusive reader access. (see also rmlock.9)

TODO:
    Convert to per cpu variables linkerset as soon as it is available.
    Optimize UP (single processor)  case.
 2007-11-08 14:47:55 +00:00