mirror of
https://github.com/leanprover/lean4.git
synced 2026-03-17 18:34:06 +00:00
6d305096e5
This PR changes the shebang in `lean_profile.sh` from `#!/bin/bash` to `#!/usr/bin/env bash` so the script works on NixOS and other systems where bash is not at `/bin/bash`, and adds a Claude Code skill pointing to the profiler documentation. 🤖 Prepared with Claude Code Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
134 lines
4.2 KiB
Bash
Executable File
134 lines
4.2 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
# Profile a Lean binary with demangled names.
|
|
#
|
|
# Usage:
|
|
# script/lean_profile.sh ./my_lean_binary [args...]
|
|
#
|
|
# Records a profile with samply, symbolicates via samply's API,
|
|
# demangles Lean symbol names, and opens the result in Firefox Profiler.
|
|
#
|
|
# Requirements: samply (cargo install samply), python3
|
|
#
|
|
# Options (via environment variables):
|
|
# SAMPLY_RATE — sampling rate in Hz (default: 1000)
|
|
# SAMPLY_PORT — port for samply symbolication server (default: 3756)
|
|
# SERVE_PORT — port for serving the demangled profile (default: 3757)
|
|
# PROFILE_KEEP — set to 1 to keep the raw profile after demangling
|
|
|
|
set -euo pipefail
|
|
|
|
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
|
|
PROFILER_DIR="$SCRIPT_DIR/profiler"
|
|
SYMBOLICATE="$PROFILER_DIR/symbolicate_profile.py"
|
|
SERVE_PROFILE="$PROFILER_DIR/serve_profile.py"
|
|
|
|
usage() {
|
|
cat >&2 <<EOF
|
|
Usage: $0 [options] <lean-binary> [args...]
|
|
|
|
Profile a Lean binary and view the results in Firefox Profiler
|
|
with demangled Lean names.
|
|
|
|
Requirements:
|
|
samply cargo install samply
|
|
python3 (included with macOS / most Linux distros)
|
|
|
|
Environment variables:
|
|
SAMPLY_RATE sampling rate in Hz (default: 1000)
|
|
SAMPLY_PORT port for samply symbolication server (default: 3756)
|
|
SERVE_PORT port for serving the demangled profile (default: 3757)
|
|
PROFILE_KEEP set to 1 to keep the temp directory after profiling
|
|
|
|
Reading demangled names:
|
|
Compiler suffixes are shown as modifier flags after the name:
|
|
[arity↓] reduced-arity specialization (_redArg)
|
|
[boxed] boxed calling-convention wrapper (_boxed)
|
|
[λ] lambda-lifted closure (_lam_N, _lambda_N, _elam_N)
|
|
[jp] join point (_jp_N)
|
|
[closed] extracted closed subterm (_closed_N)
|
|
[private] private (module-scoped) def (_private.Module.0. prefix)
|
|
[impl] implementation detail (_impl)
|
|
|
|
Specializations appear after the flags:
|
|
Lean.Meta.foo [λ] spec at Lean.Meta.bar[λ, arity↓]
|
|
= foo (with lambda closure), specialized at bar (lambda, reduced arity)
|
|
|
|
Multiple "spec at" entries indicate chained specializations.
|
|
See script/PROFILER_README.md for full documentation.
|
|
EOF
|
|
exit "${1:-0}"
|
|
}
|
|
|
|
if [ $# -eq 0 ]; then
|
|
usage 1
|
|
fi
|
|
|
|
case "${1:-}" in
|
|
-h|--help) usage 0 ;;
|
|
esac
|
|
|
|
if ! command -v samply &>/dev/null; then
|
|
echo "error: samply not found. Install with: cargo install samply" >&2
|
|
exit 1
|
|
fi
|
|
|
|
RATE="${SAMPLY_RATE:-1000}"
|
|
PORT="${SAMPLY_PORT:-3756}"
|
|
SERVE="${SERVE_PORT:-3757}"
|
|
TMPDIR=$(mktemp -d /tmp/lean-profile-XXXXXX)
|
|
TMPFILE="$TMPDIR/profile.json.gz"
|
|
DEMANGLED="$TMPDIR/profile-demangled.json.gz"
|
|
SAMPLY_LOG="$TMPDIR/samply.log"
|
|
SAMPLY_PID=""
|
|
|
|
cleanup() {
|
|
if [ -n "$SAMPLY_PID" ]; then
|
|
kill "$SAMPLY_PID" 2>/dev/null || true
|
|
wait "$SAMPLY_PID" 2>/dev/null || true
|
|
fi
|
|
# Safety net: kill anything still on the symbolication port
|
|
lsof -ti :"$PORT" 2>/dev/null | xargs kill 2>/dev/null || true
|
|
[ "${PROFILE_KEEP:-0}" = "1" ] || rm -rf "$TMPDIR"
|
|
}
|
|
trap cleanup EXIT
|
|
|
|
# Step 1: Record
|
|
echo "Recording profile (rate=${RATE} Hz)..." >&2
|
|
samply record --save-only -o "$TMPFILE" -r "$RATE" "$@"
|
|
|
|
# Step 2: Start samply server for symbolication
|
|
echo "Starting symbolication server..." >&2
|
|
samply load --no-open -P "$PORT" "$TMPFILE" > "$SAMPLY_LOG" 2>&1 &
|
|
SAMPLY_PID=$!
|
|
|
|
# Wait for server to be ready
|
|
for i in $(seq 1 30); do
|
|
if grep -q "Local server listening" "$SAMPLY_LOG" 2>/dev/null; then
|
|
break
|
|
fi
|
|
sleep 0.2
|
|
done
|
|
|
|
# Extract the token from samply's output
|
|
TOKEN=$(grep -oE '[a-z0-9]{30,}' "$SAMPLY_LOG" | head -1)
|
|
|
|
if [ -z "$TOKEN" ]; then
|
|
echo "error: could not get samply server token" >&2
|
|
exit 1
|
|
fi
|
|
|
|
SERVER_URL="http://127.0.0.1:${PORT}/${TOKEN}"
|
|
|
|
# Step 3: Symbolicate + demangle
|
|
echo "Symbolicating and demangling..." >&2
|
|
python3 "$SYMBOLICATE" --server "$SERVER_URL" "$TMPFILE" -o "$DEMANGLED"
|
|
|
|
# Step 4: Kill symbolication server
|
|
kill "$SAMPLY_PID" 2>/dev/null || true
|
|
wait "$SAMPLY_PID" 2>/dev/null || true
|
|
SAMPLY_PID=""
|
|
|
|
# Step 5: Serve the demangled profile directly (without samply's re-symbolication)
|
|
echo "Opening in Firefox Profiler..." >&2
|
|
python3 "$SERVE_PROFILE" "$DEMANGLED" -P "$SERVE"
|