[GROOVY-11478] Enable GroovyClassLoader to be ParallelCapable

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.22, 4.0.23, 5.0.0-alpha-10
• Fix Version/s: 3.0.23, 5.0.0-alpha-11, 4.0.24
• Assignee: Paul King
• Reporter: Paul King
• Created: 16/Sep/24 02:00
• Updated: 4 days ago 11:39
• Resolved: 18/Sep/24 16:34

Description

GroovyClassLoader is parallel capable but we do not declare it as such by calling the registerAsParallelCapable method as per recommended guidelines[1]. Some frameworks have worked around this using reflection but as JDK restrictions have tightened in later JDK versions, this has become not possible. Other workarounds[2] for frameworks to work with non-parallel capable classloaders have also been deprecated and removed in recent JDK versions[3][4][5]. See also [6].

[1] https://docs.oracle.com/javase/7/docs/technotes/guides/lang/cl-mt.html
[2] https://openjdk.org/groups/core-libs/ClassLoaderProposal.html
[3] https://bugs.openjdk.org/browse/JDK-8296446
[4] https://bugs.openjdk.org/browse/JDK-8303967
[5] https://bugs.openjdk.org/browse/JDK-8295848
[6] https://inside.java/2022/11/14/quality-heads-up/

Issue Links

• links to: GitHub Pull Request #2114