RFR: 8292674: ReportJNIFatalError should print all java frames

David Holmes dholmes at openjdk.org
Tue Dec 6 00:08:42 UTC 2022


When JNI reports errors and warnings and produces a stack trace, we need to see the exact Java code that was being executed. The existing `JavaThread::print_stack` that is used is only for platform/carrier threads and doesn't show any mounted virtual thread. So we introduce a new `JavaThread::print_virtual_stack_on` method to print the mounted virtual thread's stack, and we add `JavaThread::print_jni_stack` as a utility for JNI to call that dispatches to the appropriate function based on the thread type.

The existing test `hotspot/jtreg/runtime/jni/checked/TestPrimitiveArrayCriticalWithBadParam.java` was modified to test regular and virtual threads, and to expect to see the specific stack frame of the Java native method.

Additional manual testing of the JNI `FatalError` method was done by direct fault injection in modified JDK code.

Sanity testing: Oracle tiers 1-4 (to include our -Xcheck:jni run in tier4)

Thanks,
David

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Commit messages:
 - 8292674: ReportJNIFatalError should print all java frames

Changes: https://git.openjdk.org/jdk/pull/11503/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11503&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8292674
  Stats: 95 lines in 6 files changed: 79 ins; 3 del; 13 mod
  Patch: https://git.openjdk.org/jdk/pull/11503.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11503/head:pull/11503

PR: https://git.openjdk.org/jdk/pull/11503


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