Claude
c93a1fffbb
Runnable demos for the ankurm.com structured-concurrency-java article: the ExecutorService thread leak and its fix, every built-in Joiner, structure violations, timeouts, a custom Joiner, JSON thread dumps (in-process and jcmd), scoped values, javap diffs of the API on 25, 26, 27 and 28-ea, compiler output for six pieces of 25/26-era code, and the preview class-file trap between 27 and 28. Transcripts in output/. Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01CifR2BE7PBvRy5hT8TS9oz
16 lines
743 B
Plaintext
16 lines
743 B
Plaintext
$ javac src/Timeouts.java && java Timeouts (28-beta+21-ea)
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-- inside the deadline
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[fast, fast]
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-- deadline 200 ms, one subtask needs 5 s
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ExecutionException, cause = java.util.concurrent.StructuredTaskScope$CancelledByTimeoutException
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returned within well under a second (not 5 s): the slow subtask was interrupted
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-- the same deadline with a joiner whose timeout() returns a partial result
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join() = [fast]
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-- a thread factory decides the subtask thread's name
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[order-0, order-1]
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$ javac src/CollectingJoiner.java && java CollectingJoiner (28-beta+21-ea)
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collected (sorted): [1, 3]
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-- with a 100 ms timeout and a 5 s subtask
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CompletionException, cause = java.util.concurrent.StructuredTaskScope$CancelledByTimeoutException
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