asmhatreandClaude Sonnet 5
55ee850a75
One three-round worker pipeline implemented with CountDownLatch (one latch per round), CyclicBarrier (reusable, with a barrier action), and Phaser (reusable, plus dynamic mid-run registration), alongside Semaphore solving the genuinely different problem of bounding concurrent access. Covers timeout behavior (CyclicBarrier permanently breaks on one timeout, Phaser doesn't) and virtual-thread compatibility, including the corrected finding that Object.wait() releases its monitor and never pinned, unlike Thread.sleep() inside synchronized. Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01FhzLY5p6okFva3qsnsRyvM
17 lines
819 B
Markdown
17 lines
819 B
Markdown
# java-core-examples
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Runnable companion code for ankurm.com's Java-core / concurrency series. One Maven module per
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article; each module's own README has that article's version table, quickstart, and traps.
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| Module | Post |
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| [`jmm`](jmm/) | The Java Memory Model Explained: volatile, happens-before, and Why Your Double-Checked Lock Failed |
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| [`locks`](locks/) | synchronized vs ReentrantLock vs StampedLock: Benchmarks and a Decision Table |
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| [`atomics`](atomics/) | Java Atomics and VarHandle: CAS, LongAdder, and When Atomics Beat Locks |
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| [`vt-pinning`](vt-pinning/) | Diagnosing Virtual Thread Pinning in Production: JFR Events, jcmd, and Real Fixes |
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| [`synchronizers`](synchronizers/) | CountDownLatch vs CyclicBarrier vs Phaser vs Semaphore in Java |
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## License
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MIT - see [LICENSE](LICENSE).
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