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asmhatreandClaude Sonnet 5 0819993c51 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

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

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java-core-examples

Runnable companion code for ankurm.com's Java-core / concurrency series. One Maven module per article; each module's own README has that article's version table, quickstart, and traps.

Module	Post
`jmm`	The Java Memory Model Explained: volatile, happens-before, and Why Your Double-Checked Lock Failed
`locks`	synchronized vs ReentrantLock vs StampedLock: Benchmarks and a Decision Table
`atomics`	Java Atomics and VarHandle: CAS, LongAdder, and When Atomics Beat Locks
`vt-pinning`	Diagnosing Virtual Thread Pinning in Production: JFR Events, jcmd, and Real Fixes

License

MIT - see LICENSE.

716 B Raw Blame History

java-core-examples

License

716 B

Raw Blame History