RFR (M): CR 8003985: Support @Contended Annotation (original) (raw)
Aleksey Shipilev aleksey.shipilev at oracle.com
Tue Nov 27 09:57:41 PST 2012
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Hi,
This is the daizy-fresh thread for reviewing the actual changes to support the JEP-142 in HotSpot. Please address API issues about @Contended to concurrency-interest list, Doug had started the thread here:
http://cs.oswego.edu/pipermail/concurrency-interest/2012-November/010208.html
We are not discussing the design, API and all the general stuff here, only the reference implementation. I would like to have someone extra knowledgeable in HotSpot codebase to see whether I do anything stupid there.
The webrev for the change is here: http://shipilev.net/pub/jdk/hotspot/contended/webrev-4/
Notable differences against latest version:
- a little denser packing in some corner cases
- support @Contended for static fields
- moved @Contended to sun.misc (go and nag at c-i@ about this)
- bugfixes
Testing:
- hotspot/test/runtime/8003985/Test8003985 on Linux x86_64
- jprt, specjvm98 quick run
- jprt full cycle is underway, looking good
Thanks, Aleksey.
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