JDK-8305767 : HdrSeq: support for a merge() method
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: 21
  • Priority: P3
  • Status: Resolved
  • Resolution: Withdrawn
  • Submitted: 2023-04-07
  • Updated: 2023-05-01
  • Resolved: 2023-05-01
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JDK 21
21Resolved
Related Reports
Cloners :  
JDK-8298597 - HdrSeq: support for a merge() method
Relates :  
JDK-8297796 - GenShen: instrument the remembered set scan
Relates :  
JDK-8298902 - AbsSeq::merge() should not dodge decaying stats
Description
For Shenandoah's generational mode's RS scan instrumentation, we want support for a merge() method for HdrSeq.

The rough shape of the spec for the proposed merge() method in HdrSeq class is:

// Merge the data in this HdrSeq into the HdrSeq, seq2, in the argument
// to the method, optionally clearing the data in this HdrSeq.
void merge(HdrSeq* seq2);

This will likely necessitate having the same or similar methods in superclass hierarchy.
Comments
We are abandoning this change in favor of https://github.com/openjdk/shenandoah/pull/268
01-05-2023
A pull request was submitted for review. URL: https://git.openjdk.org/jdk/pull/13395 Date: 2023-04-07 23:03:02 +0000
07-04-2023