#!/bin/bash
# Wrapper: ensures only ONE heavy process runs, checks memory before starting.
set -euo pipefail

LOCKFILE="/tmp/heretic_heavy.lock"
MEMCHECK="/home/jovyan/step37_work/.venv/bin/python /home/jovyan/heretic/memcheck.py"

# 1. Check memory
$MEMCHECK

# 2. Acquire lock (non-blocking)
exec 200>"$LOCKFILE"
if ! flock -n 200; then
    echo "[run_heavy] Another heavy process is running. Waiting..."
    flock 200
fi

echo "[run_heavy] Lock acquired. Running: $@"
"$@"
RC=$?

# 3. Release lock on exit
echo "[run_heavy] Finished with exit code $RC"
exit $RC