JDK-8317452 : [JVMCI] Export symbols used by lightweight locking to JVMCI compilers.
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 21,22,repo-lilliput-21
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2023-10-03
  • Updated: 2025-05-15
  • Resolved: 2023-10-04
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JDK 22
22 b18Fixed
Related Reports
Causes :  
JDK-8357068 - Add JVMCIUseFastLocking back and set it according to LockingMode
Relates :  
JDK-8291555 - Implement alternative fast-locking scheme
Description
Lightweight locking has become the default locking scheme. To implement this in JVMCI compiler, we need to export
JavaThread::_lock_stack, LockStack::_top, LockStack::_end_offset, and ObjectMonitor::ANONYMOUS_OWNER
Comments
A pull request was submitted for review. URL: https://git.openjdk.org/lilliput-jdk17u/pull/74 Date: 2024-04-08 17:06:48 +0000
08-04-2024
A pull request was submitted for review. URL: https://git.openjdk.org/lilliput-jdk21u/pull/18 Date: 2024-03-25 14:02:46 +0000
25-03-2024
Would you like to get it into jdk21u, where the alternative locking scheme was implemented? This would unblock running JDK 21 Graal with LM_LIGHTWEIGHT, AFAICS.
20-10-2023
Changeset: 9718f490 Author: Yudi Zheng <yzheng@openjdk.org> Committer: Doug Simon <dnsimon@openjdk.org> Date: 2023-10-04 10:18:39 +0000 URL: https://git.openjdk.org/jdk/commit/9718f490fb76f6712ac8f9c7f5248ca10bf83e6f
04-10-2023
A pull request was submitted for review. URL: https://git.openjdk.org/jdk/pull/16032 Date: 2023-10-03 19:42:28 +0000
03-10-2023