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Claude
014e3b11d1
Trust-layer generalization (zero-regression verified on tokei):
- TargetSpec [build] uses an explicit {out} isolation-dir placeholder
instead of injected CARGO_TARGET_DIR, plus optional sanitizer/
sanitizer_binary templates. Nothing assumes cargo anymore.
- verdict rebuild_pristine_baseline, sanitizer_check, and harnessd
run_verdict candidate build all use {out} substitution. A target with
no sanitizer build caps accepts at needs-human-review.
- tokei/comrak target.toml migrated to the {out} form (CARGO_TARGET_DIR=
{out} + nightly ASan sanitizer command).
cJSON C target (v1.7.19, MIT):
- harness.c bench/golden driver (trust-layer; agent can patch workspace
cJSON.c but not the rig), compiled with clang against the patched tree.
- 5.6 MB deterministic corpus (gen-corpus.sh) + MANIFEST/GOLDEN pins.
- gates = hermetic Unity/CTest suite (19 tests pass); sanitizer =
ASan+UBSan; scripts/diff-fuzz-cjson.py for differential fuzzing.
coz causal profiler integration (SPEC §12):
- harness.c optional -DHOTPATH_COZ throughput progress point.
- scripts/install-coz.sh, coz-profile.sh, coz-summary.py; just coz/install-coz.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EcKPWQ3MQD4NdEHwar96u2
42 lines
1.5 KiB
Bash
42 lines
1.5 KiB
Bash
#!/bin/sh
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# coz causal profiling for a C/C++ target (SPEC §12). Unlike a flat
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# profiler (callgrind ranks where time is SPENT), coz measures where a
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# speedup would actually RAISE throughput — it virtually speeds up each
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# line and reports the causal effect on the harness's progress points.
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# Use it to rank playbook targets when the flat profile is ambiguous.
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#
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# scripts/coz-profile.sh cjson [iters]
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#
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# Requires: coz on PATH (build: git clone github.com/plasma-umass/coz &&
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# see scripts/install-coz.sh) and the target's harness built with
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# -DHOTPATH_COZ (this script does that). Output: results/<target>/coz/
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set -eu
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ROOT=$(cd "$(dirname "$0")/.." && pwd)
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TARGET=${1:?usage: coz-profile.sh <target> [iters]}
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ITERS=${2:-200}
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OUT="$ROOT/results/$TARGET/coz"
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mkdir -p "$OUT"
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command -v coz >/dev/null 2>&1 || {
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echo "coz not on PATH — run scripts/install-coz.sh first" >&2
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exit 1
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}
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# coz needs debug line info and the progress point compiled in.
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BIN="$OUT/cjson-bench-coz"
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clang -O2 -g -gdwarf-4 -DHOTPATH_COZ \
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-I "$ROOT/targets/$TARGET/workspace" \
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-I "$(dirname "$(command -v coz)")/../include" \
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-o "$BIN" \
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"$ROOT/targets/$TARGET/harness.c" \
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"$ROOT/targets/$TARGET/workspace/cJSON.c" \
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-ldl
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cd "$ROOT"
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coz run --output "$OUT/profile.coz" --- \
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"$BIN" corpora/$TARGET/input/big.json "$ITERS" >/dev/null
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echo "coz profile written: $OUT/profile.coz"
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echo "view at https://plasma-umass.org/coz/ (load the .coz file) or:"
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echo " python3 scripts/coz-summary.py $OUT/profile.coz"
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