synchronizers: CountDownLatch vs CyclicBarrier vs Phaser vs Semaphore

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

This commit is contained in:

asmhatre

2026-09-30 06:43:52 +00:00

co-authored by

Claude Sonnet 5

parent 0819993c51

commit 55ee850a75

20 changed files with 962 additions and 0 deletions

									
										pom.xml
									
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				@@ -17,6 +17,7 @@

				    <module>locks</module>

				    <module>atomics</module>

				    <module>vt-pinning</module>

				    <module>synchronizers</module>

				  </modules>

				  <properties>