An Alternative Hashing Alternative (original) (raw)

Rémi Forax forax at univ-mlv.fr
Wed Jun 6 19:03:38 UTC 2012

On 06/06/2012 07:23 PM, Doug Lea wrote:

On 06/06/12 13:09, Rémi Forax wrote:

I haven't read the whole code (I need a blackboard :) (The mostly-non-blocking retries here lead to a lot of code sprawl. Macros would help :-)

I wonder if it's not better to use unsafe.tryMonitorEnter() instead of a lock bit. I need a lock with a form of tryLock, so while I do use built-in monitors and/or AQS for actual locking, I need to preface use with lock bit in regular non-tree-bins.

tryMonitorEnter is the equivalent of tryLock for synchronized block (monitorEnter/monitorExit).

Also the class depends on LongAdder, is it a requirement or an AtomicLongUpdater can be used ? If this ever makes it as far as contemplating JDK7 ports, a minimal form of LongAdder could be pulled in as a static inner class. -Doug

Rémi

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