RFR: 8313899: JVMCI exception Translation can fail in TranslatedException.<clinit>

Doug Simon dnsimon at openjdk.org
Wed Aug 9 09:56:29 UTC 2023


In a test that stresses metaspace (such as `vmTestbase/vm/mlvm/hiddenloader/stress/oome/metaspace/Test.java`) that also uses `-Xcomp -XX:-TieredCompilation`, we've seen a failure in `TranslatedException.<clinit>` due to exhausted metaspace:

java.lang.OutOfMemoryError: Metaspace
        at jdk.internal.vm.TranslatedException.encodeThrowable([java.base at 21-galahadeestaging](mailto:java.base at 21-galahadeestaging)/TranslatedException.java:176)
        at jdk.internal.vm.TranslatedException.<clinit>([java.base at 21-galahadeestaging](mailto:java.base at 21-galahadeestaging)/TranslatedException.java:61)
        at jdk.internal.vm.VMSupport.encodeThrowable([java.base at 21-galahadeestaging](mailto:java.base at 21-galahadeestaging)/VMSupport.java:171)

This PR pushes a fix such that this exception is properly handled in the VM (i.e. causing a compilation bailout) instead of leading to a VM crash.

The PR includes 2 bits of debug code guarded by system properties that enable the handling to be tested in libgraal. The test itself is not included as libgraal is not part of OpenJDK.

-------------

Commit messages:
 - handle exception in TranslatedException.<clinit> (JDK-8313899)

Changes: https://git.openjdk.org/jdk/pull/15198/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15198&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8313899
  Stats: 43 lines in 3 files changed: 41 ins; 1 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/15198.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15198/head:pull/15198

PR: https://git.openjdk.org/jdk/pull/15198


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