asmhatreandClaude Sonnet 5.5
ecceaa8b32
jextract-25 early-access build (25-jextract+2-4) on JDK 25.0.5+8 against SQLite 3.45.1: 25 functions and 13 constants generated into 4 committed files (the whole header would be 83 files), a small Db wrapper, the four arena kinds used wrongly on purpose, ADDRESS vs C_POINTER zero-length vs unbounded segments and the SIGSEGV from getString on a NULL pointer, sqlite3_open out-parameter, return codes to exceptions, a sqlite3_exec upcall and the VM exit when it throws, the JDK 25 native-access warning and --illegal-native-access=deny, library loading failures, and a JMH benchmark of FFM vs hand-written JNI vs plain Java (indicative only: shared 2-CPU machine). Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_017ic4b6Kg9RWSTJzyz6KP9X
24 lines
1.6 KiB
Bash
Executable File
24 lines
1.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Builds everything and runs the JMH comparison (FFM vs JNI vs plain Java). About 4 minutes. Writes output/10-jmh.txt.
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# Needs: JAVA_HOME (JDK 25), gcc, libsqlite3-dev, and `scripts/fetch-jmh.sh` run once. JEXTRACT is only needed by gen.sh, not here.
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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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JAVA_HOME="${JAVA_HOME:?set JAVA_HOME to a JDK 25}"
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BUILD="${BUILD:-$HERE/build}"; mkdir -p "$BUILD/classes" "$HERE/output"
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"$HERE/scripts/build-jni.sh" >/dev/null
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CP="$(ls bench/lib/*.jar | tr '\n' ':')"
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"$JAVA_HOME/bin/javac" -cp "$CP:$BUILD/jni-classes" -processorpath "$CP" -d "$BUILD/classes" \
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$(find generated src bench/src -name '*.java') 2>&1 | grep -v '^Note:'
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OPTS=(-f 5 -wi 3 -w 1 -i 5 -r 1)
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{
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echo "\$ java --enable-native-access=ALL-UNNAMED -Djava.library.path=build/lib org.openjdk.jmh.Main ${OPTS[*]} ($("$JAVA_HOME/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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echo "load average before the run: $(cut -d" " -f1-3 /proc/loadavg) (1, 5, 15 minutes; this box has 2 CPUs and was shared with other jobs)"
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echo "sqlite: $(dpkg-query -W -f='${Package} ${Version}' libsqlite3-dev 2>/dev/null)"
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"$JAVA_HOME/bin/java" -cp "$BUILD/classes:$BUILD/jni-classes:$CP" org.openjdk.jmh.Main "${OPTS[@]}" \
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-jvmArgs "--enable-native-access=ALL-UNNAMED -Djava.library.path=$BUILD/lib" 2>&1 | sed -n '/^Benchmark /,$p'
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echo "load average after the run: $(cut -d' ' -f1-3 /proc/loadavg)"
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} > "$HERE/output/10-jmh.txt"
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cat "$HERE/output/10-jmh.txt"
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