Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
PojavLauncherTeam
GitHub Repository: PojavLauncherTeam/openj9
 Path: blob/master/doc/release-notes/0.31/0.31.md
5995 views

Eclipse OpenJ9 version 0.31.0 release notes

These release notes support the Eclipse OpenJ9 0.31.0 release plan.

Supported environments

OpenJ9 release 0.31.0 supports OpenJDK 18.

All releases are tested against the OpenJ9 functional verification (FV) test suite, the OpenJDK test suites, and additional tests provided by Adoptium.

To learn more about support for OpenJ9 releases, including OpenJDK levels and platform support, see Supported environments.

Notable changes in this release

The following table covers notable changes in v0.31.0. Further information about these changes can be found in the user documentation.

Issue number Description Version / Platform Impact
#3267 New -XX:[+|-]ShowHiddenFrames option added All versions This option controls if hidden method frames generated for MethodHandles are displayed in a stacktrace. This option is disabled by default and can be enabled for debugging purposes.
#13925 New SharedClassStatistics API added All versions New shared classes API is added in SharedClassStatistics for cacheDir(), cacheName(), cachePath(), numberAttached(). For more details see the API documentation. Only the Java 18 API documentation is updated in this release, API documentation for the other versions will be updated in the next release.
#14623 Modified default for -XX:MaxDirectMemorySize Java 11 and later In Java 11 and later, -XX:MaxDirectMemorySize is no longer set by default and the class library limits the amount of heap memory used for Direct Byte Buffers to the same value as the maximum heap size. Previously the limit was 87.5% of the maximum heap size.

Known issues

The v0.31.0 release contains the following known issues and limitations:

Issue number Description Platform Impact Workaround

Other changes

A full commit history for this release is available at Eclipse OpenJ9 v0.31.0.