JDK-8307495 : Specialize atomic bitset functions for aix-ppc
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: runtime
  • Affected Version: 21
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • OS: aix
  • CPU: ppc
  • Submitted: 2023-05-04
  • Updated: 2025-10-21
  • Resolved: 2025-10-15
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JDK 26
26 b20Fixed
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.)
Comments
Changeset: c9cbd31f Branch: master Author: David Briemann <dbriemann@openjdk.org> Date: 2025-10-15 18:29:23 +0000 URL: https://git.openjdk.org/jdk/commit/c9cbd31f8575a25c4decd68dc645378c5ba2bad0
15-10-2025
A pull request was submitted for review. Branch: master URL: https://git.openjdk.org/jdk/pull/27650 Date: 2025-10-06 15:16:26 +0000
08-10-2025
AIX and linux can use the same implementation. The atomics written in inline assembler are identical.
05-09-2023