[pcp] pmda instance cache operations
makc at gmx.co.uk
Sun Jan 24 19:51:28 CST 2010
On Mon, 25 Jan 2010 09:39:56 +1100, Ken McDonell wrote:
kenj> So, what do you think the correct outcome should be?
kenj> a) second pmdaCacheOp(indom, PMDA_CACHE_LOAD) returns an error?
kenj> b) pmdaCacheOp(indom, PMDA_CACHE_LOAD) fails if anything already in the
kenj> c) purge cache first then load, so 2 inactive instances?
kenj> d) cache state wins if loaded instance already in cache?
kenj> I'd vote for b) which is a very similar to a), but a little easier to
kenj> explain and deals with the more subtle no load, store an instance, then
kenj> try to load flawed logic.
In my particular case d) is what I was expecting but then I wasn't
expecting the second LOAD. I can live with b), just need to get into
the habit of checking return values from LOAD.
On the somewhat related note, am I correct in assuming that
pmdaCacheOp(indom, PMDA_CACHE_CULL) is the only option to clean
all the entires in the cache in preparation to the second loading?
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