(0.39) Sync JVM init and exit paths #17417
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JVM init path: J9_CreateJavaVM. JVM exit paths: protectedDestroyJavaVM and exitJavaVM. A segfault can happen if JVM init and exit paths execute concurrently. This can happen if a shutdown signal is raised and the shutdown handler is invoked. JVM shutdown signals are SIGINT, SIGTERM and SIGHUP. The JVM exit paths wait or spin until the JVM has successfully initialized. This should prevent clean up (freeing of memory) until the JVM has successfully initialized, and resolve the associated segfaults. Internal issue: 148771 Signed-off-by: Babneet Singh <sbabneet@ca.ibm.com>
gacholio
approved these changes
May 16, 2023
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JVM init path: J9_CreateJavaVM.
JVM exit paths: protectedDestroyJavaVM and exitJavaVM.
A segfault can happen if JVM init and exit paths execute concurrently. This can happen if a shutdown signal is raised and the shutdown handler is invoked. JVM shutdown signals are SIGINT, SIGTERM and SIGHUP.
The JVM exit paths wait or spin until the JVM has successfully initialized.
This should prevent clean up (freeing of memory) until the JVM has successfully initialized, and resolve the associated segfaults.
Internal issue: 148771
Backport of #17101