What's new in version 0.38.0

The following new features and notable changes since version 0.37.0 are included in this release:

• New -XX:[+|-]HandleSIGUSR2 option added
• Technical preview of CRIU support

Features and changes

New -XX:[+|-]HandleSIGUSR2 option added

This option controls the handling of the SIGUSR2 signal by the VM signal handler. The VM signal handler is installed only if this option is enabled.

For more information, see -XX:[+|-]HandleSIGUSR2.

Technical preview of CRIU support

This release supports, as a technical preview, the Checkpoint/Restore In Userspace (CRIU) tool that is included with many Linux distributions. This tool is available for OpenJDK 11 and later running on Linux® x86, Linux on POWER® (Little Endian), and Linux on IBM Z® only.

You can use the CRIU feature to stop the VM at a checkpoint, save its state, then run the VM from the point where it was stopped. You can restore the checkpoint image in multiple other environments with improved start-up time. This capability means that the CRIU support is particularly useful in container environments. For more information, see CRIU support.