8373578: JVMTI replacement for AsyncGetCallTrace#5
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rkennke wants to merge 9 commits intoJDK-8378094from
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8373578: JVMTI replacement for AsyncGetCallTrace#5rkennke wants to merge 9 commits intoJDK-8378094from
rkennke wants to merge 9 commits intoJDK-8378094from
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Adds file-static volatile counters in stackWalker.cpp, incremented with AtomicAccess::inc(), to track the distribution of bias causes across the stack-walking pipeline: request outcomes, build_from_ljf/context failure reasons, and compute_top_frame walk-time bias. Statistics are printed via log_info(stackwalk) at VM exit when -Xlog:stackwalk=info is enabled and at least one request was made. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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WIP, based on PR openjdk#29844, showing a JVMTI-with-JFR implementation, that reports the requested stack-trace via a new AsyncStackTrace JFR event.