JDK-8252014 : Find a better place for counter utility classes after JEP387
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: runtime
  • Affected Version: 16
  • Priority: P4
  • Status: Open
  • Resolution: Unresolved
  • Submitted: 2020-08-19
  • Updated: 2023-01-06
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tbdUnresolved
Related Reports
Relates :  
JDK-8251158 - Implementation of JEP 387: Elastic Metaspace
Description
Followup to JEP387:

JEP387 comes with a number of new utility classes, shyly hidden away inside the metaspace source tree. Some of those could be brushed up and made general purpose classes instead.

One example are the counter classes (see: http://cr.openjdk.java.net/~stuefe/jep387/review/2020-08-11/webrev-core/webrev/src/hotspot/share/memory/metaspace/counter.hpp.html )
Comments
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0261r1.html Here's a link to a paper for a more standard way of implementing atomic non-wrapping around counters that [~kbarrett] references.
19-08-2020