On Aug 22, 2008, at 12:06, Jeremias Maerki wrote:
I think I got it now. I'll clean up the code now, do multi-threading
tests now and then prepare a patch for review.
Just a question in the meantime: What's the purpose of the hash
function in PropertyCache? It seems to just hash a hash code. At any
rate, when I made sure that I always worked with the hashed hash code,
the whole thing suddenly started working.
This is borrowed from Sun's java.util.HashMap. It defends the map
against 'bad' hashCode() implementations (that is: it guarantees
proper distribution over the buckets, regardless of the quality of
the hashCode() implementation)
BTW, I've upped the minimal bucket count to be equals to the segment
count so a lock on a segment is always the equivalent of a lock of the
set of buckets assigned to the segment. That allows more efficient