asmhatreandClaude Sonnet 5
202f2f18a5
Adds the concurrency-interview module: a real race condition with its actual lost-update count, why volatile alone doesn't fix it, a real JVM-detected deadlock (ThreadMXBean.findDeadlockedThreads()) with the fix, and ScopedValue's exact child-thread inheritance rules (finalized in JDK 25 via JEP 506, demonstrated against StructuredTaskScope, still preview per JEP 505/525). 4 runnable demos, 1 JUnit test class (9 tests), 5 captured output transcripts. Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01FhzLY5p6okFva3qsnsRyvM
33 lines
1.1 KiB
Bash
Executable File
33 lines
1.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Regenerates every file in ../output/. Requires JDK25_HOME. Every demo in this module needs
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# --enable-preview to run (ScopedValueDemo uses StructuredTaskScope, still preview in JDK 25/26),
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# even though ScopedValue itself is finalized (JEP 506).
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set -euo pipefail
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if [[ -z "${JDK25_HOME:-}" ]]; then
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echo "JDK25_HOME must be set (e.g. /path/to/jdk-25)" >&2
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exit 1
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fi
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cd "$(dirname "$0")/.."
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OUT=output
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mkdir -p "$OUT"
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JAVA_HOME="$JDK25_HOME" mvn -q -f ../pom.xml -pl concurrency-interview package
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run() {
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local class=$1
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local outfile=$2
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echo "==> $class"
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"$JDK25_HOME/bin/java" --enable-preview -cp target/classes "com.ankurm.concurrencyinterview.$class" 2>&1 | grep -v "Picked up" > "$OUT/$outfile"
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}
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run RaceConditionDemo 01-race-condition.txt
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run VolatileNotEnoughDemo 02-volatile-not-enough.txt
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run DeadlockDemo 03-deadlock-detection.txt
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run ScopedValueDemo 04-scoped-value-inheritance.txt
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cp target/surefire-reports/com.ankurm.concurrencyinterview.InterviewClaimsTest.txt "$OUT/05-correctness-tests.txt"
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echo "Done. See $OUT/"
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