Claude
814c32b5ce
Basics, failure semantics on 26 vs 27, lazy collections, API across 25/26/27, preview-flag traps and a JMH read-path benchmark (jars fetched and sha1-checked, not committed). Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01TF9JWFvJSNm6HVzswzZU5a
16 lines
1018 B
Bash
Executable File
16 lines
1018 B
Bash
Executable File
#!/usr/bin/env bash
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# Builds and runs the JMH read-path benchmark on JDK 27 and writes ../output/07-jmh.txt (about 3 minutes).
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# JDK27=/path ./run-jmh.sh (run ./fetch.sh once first)
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set -uo pipefail
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unset JAVA_TOOL_OPTIONS
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HERE="$(cd "$(dirname "$0")" && pwd)"; cd "$HERE"
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JDK27="${JDK27:-/opt/jdks/jdk27}"
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CP="$(ls lib/*.jar | tr '\n' ':')"; B="$(mktemp -d)"; trap 'rm -rf "$B"' EXIT
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"$JDK27/bin/javac" --enable-preview --release 27 -cp "$CP" -processorpath "$CP" -d "$B" src/bench/AccessBench.java 2>&1 | grep -v '^Note:'
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{
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echo "\$ java --enable-preview org.openjdk.jmh.Main -f 3 -wi 3 -w 1 -i 5 -r 1 ($("$JDK27/bin/java" -version 2>&1 | sed -n 2p | sed 's/.*(build \(.*\))/\1/'), JMH 1.37)"
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echo "machine: $(nproc) CPUs, $(grep -m1 'model name' /proc/cpuinfo | sed 's/.*: //')"
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"$JDK27/bin/java" --enable-preview -cp "$B:$CP" org.openjdk.jmh.Main -f 3 -wi 3 -w 1 -i 5 -r 1 -jvmArgs "--enable-preview" 2>&1 | sed -n '/^Benchmark /,$p'
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} > "$HERE/../output/07-jmh.txt"
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cat "$HERE/../output/07-jmh.txt"
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