asmhatreandClaude Sonnet 5
4a74153d87
Adds JMH put/get throughput benchmarks (synchronizedMap vs ConcurrentHashMap, swept at 1/2/4/8 threads), a computeIfAbsent recursion trap demo (CHM tolerates recursion into a different key but throws IllegalStateException on the same key; plain HashMap throws ConcurrentModificationException even single-threaded), and a null-handling demo (CHM rejects null keys/values on put() and null keys on get() too). 7/7 JUnit tests pass; all output/ transcripts captured from real runs. Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01FhzLY5p6okFva3qsnsRyvM
36 lines
1.1 KiB
Bash
36 lines
1.1 KiB
Bash
#!/usr/bin/env bash
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# Regenerates every file in ../output/ from a real run against $JDK25_HOME.
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# Usage: JDK25_HOME=/path/to/jdk-25 ./run-all.sh
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set -euo pipefail
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if [ -z "${JDK25_HOME:-}" ]; then
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echo "Set JDK25_HOME to a JDK 25 install first." >&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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mvn -q package
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CP="target/classes"
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run() {
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local cls="$1" out="$2"
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{ echo "\$ java $cls"; echo; "$JDK25_HOME/bin/java" -cp "$CP" "com.ankurm.hashmapconcurrenthashmap.$cls"; } 2>&1 \
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| grep -v "^Picked up JAVA_TOOL_OPTIONS" > "$OUT/$out"
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}
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run ComputeIfAbsentRecursionDemo 01-computeifabsent-recursion.txt
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run NullHandlingDemo 02-null-handling.txt
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for t in 1 2 4 8; do
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{ echo "\$ java -jar benchmarks.jar PutGetBenchmark -t $t"; echo; \
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"$JDK25_HOME/bin/java" -jar target/benchmarks.jar PutGetBenchmark -t "$t"; } 2>&1 \
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| grep -v "^Picked up JAVA_TOOL_OPTIONS" > "$OUT/0$((t == 1 ? 3 : t == 2 ? 4 : t == 4 ? 5 : 6))-put-get-benchmark-t$t.txt"
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done
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cp target/surefire-reports/com.ankurm.hashmapconcurrenthashmap.MapClaimsTest.txt "$OUT/07-correctness-tests.txt"
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echo "Done. See $OUT/"
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