JDK-8307500 : Specialize atomic bitset functions for linux-x86
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: runtime
  • Affected Version: 21
  • Priority: P4
  • Status: Open
  • Resolution: Unresolved
  • Submitted: 2023-05-04
  • Updated: 2023-08-27
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Other
tbdUnresolved
Related Reports
Relates :  
JDK-8293117 - Add atomic bitset functions
Description
JDK-8293117 added a suite of atomic operations for manipulating integer values representing bitsets. The default implementation provided there uses a loop over Atomic::cmpxchg. It also provided a mechanism for specializing the implementation by platform-specific code. We should provide such a specialization for the platform named in the summary, if that's possible.  (If there isn't a better implementation then this issue can just be closed.)