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Re: AW: more lock modes based on AbstractQueuedSynchronizer: msg#00002

java.jsr.166-concurrency

Subject: Re: AW: more lock modes based on AbstractQueuedSynchronizer


As an aside, we're now planning to add AbstractQueuedLongSynchronizer
(sorry for crummy name) to Mustang. This expands the range of
applicability to synchronization states requiring 64bits. In many
applications you'd still have to use bit-oriented techniques (that can
be awkward in Java) to partition these 64bits into different aspects
of sync state. Also, the atomic updates require emulation (so won't
perform very well) on a few platforms -- the only common one is pre-G5
macs. But by the time Apple supports Mustang, we figure all mac users
will have G5s :-)

-Doug


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