JDK-8269126 : Rename G1AllowPreventiveGC option to G1UsePreventiveGC
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: 17,18
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2021-06-22
  • Updated: 2021-07-15
  • Resolved: 2021-06-29
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JDK 17 JDK 18
17 b29Fixed 18Fixed
Related Reports
Relates :  
JDK-8257774 - G1: Trigger collect when free region count drops below threshold to prevent evacuation failures
Description
Rename the G1AllowPreventiveGC diagnostic flag because the "Allow" part is otherwise unused in G1 flags. Use "Use" instead like others.
Comments
Changeset: fc0fd96a Author: Thomas Schatzl <tschatzl@openjdk.org> Date: 2021-06-29 08:34:55 +0000 URL: https://git.openjdk.java.net/jdk17/commit/fc0fd96a5f8faf09264edf4fbc94bf1d8ac7b3a2
29-06-2021
Late enhancement approved by Project Lead.
28-06-2021
Late enhancement request Justification: We would like to rename the flag G1AllowPreventiveGC introduced in JDK-8257774 to G1UsePreventiveGC because it fits better with existing G1 flag naming. Doing it later will cause unnecessary issues when explaining or using this flag for potentially a long time. Risk: Minimal. No backward compatibility issue: this is a diagnostic flag for functionality introduced before JDK 17 FC. No CSR needed because it is a diagnostic flag. This is a search&replace of the old name with the new one. Changes for JDK 17 are available and tested with tier1-5. Integration date estimate: Basically as soon as the exception is granted . The fix for JDK-17 can be reviewed already https://github.com/openjdk/jdk17/pull/132 and has at least internally been reviewed.
24-06-2021