vt-pinning: diagnosing virtual thread pinning companion code

Reproduces the pinning JEP 491 did not fix (native JNI frames) with a real
native library, alongside the monitor case it did fix. Covers the
jdk.VirtualThreadPinned JFR event, reading pinned vs unmounted virtual
threads from a jcmd Thread.dump_to_file, the measured throughput cost on a
capped carrier pool, and a bounded-executor pattern to contain the blast
radius.

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01FhzLY5p6okFva3qsnsRyvM

This commit is contained in:

asmhatre

2026-09-30 06:35:35 +00:00

co-authored by

Claude Sonnet 5

parent ff183da163

commit 0819993c51

18 changed files with 725 additions and 0 deletions

									
										pom.xml
									
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				@@ -16,6 +16,7 @@

				    <module>jmm</module>

				    <module>locks</module>

				    <module>atomics</module>

				    <module>vt-pinning</module>

				  </modules>

				  <properties>