j124 fair melee: add strong-field melee harness + driver (legacy champion field)

2026-09-26 04:08:44 +02:00
parent 06da7abb0e
commit 6c21dc4c58
2 changed files with 511 additions and 0 deletions
@@ -0,0 +1,97 @@
+#!/usr/bin/env bash
+# run_melee_strong_field.sh — drive the STRONG-FIELD melee A/B
+# (see common_libs/tests/measure_melee_strong_field.nim).
+#
+# Builds ONE frozen ModularBot (from `git archive HEAD`), then runs one process
+# per arm in parallel; each process owns its own Tank Royale server on an
+# ephemeral port. Output: <outdir>/<arm>/run<N>.json (+ .bot.stdout.log).
+#
+#   common_libs/tests/run_melee_strong_field.sh [outdir]
+#
+# Env:
+#   MELEE_RUNS    (default 12)
+#   MELEE_ROUNDS  (default 5)
+#   MELEE_ARMS    (default "pattern bb_ret bb_decay")
+#   MELEE_FIELD   (default "/tmp/tr_bots/Diamond,/tmp/tr_bots/Dookious,/tmp/tr_bots/GresSuffurd")
+#   WAIT_ARENA    minutes to wait for foreign battles (default 45)
+#
+# ARENA SERIALIZATION: refuses to start (or waits) while another job's battles
+# are running; never pkills a foreign process. Kills only its own process groups
+# on EXIT/INT/TERM.
+set -euo pipefail
+
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO="$(cd "$HERE/../.." && pwd)"
+OUTDIR="${1:-/tmp/melee_strong_field}"
+RUNS="${MELEE_RUNS:-12}"
+ROUNDS="${MELEE_ROUNDS:-5}"
+ARMS_STR="${MELEE_ARMS:-pattern bb_ret bb_decay}"
+WAIT_ARENA="${WAIT_ARENA:-45}"
+export MELEE_FIELD="${MELEE_FIELD:-/tmp/tr_bots/Diamond,/tmp/tr_bots/Dookious,/tmp/tr_bots/GresSuffurd}"
+BIN="$HERE/measure_melee_strong_field"
+
+[[ -x "$BIN" ]] || { echo "ERROR: build the runner first: nim c --nimcache:/tmp/nc_j124 --path:common_libs $HERE/measure_melee_strong_field.nim" >&2; exit 1; }
+
+# ── arena serialization (bracketed patterns: pgrep must not match itself) ────
+FOREIGN='[r]un_bridge_battle.sh|[r]obocode_shim.TrBattleCapture|[r]obocode_shim.LegacyBotBridge|[M]odularBot_bin|[m]easure_melee'
+foreign() { pgrep -af "$FOREIGN" 2>/dev/null | grep -v "$OUTDIR" || true; }
+if [[ -n "$(foreign)" ]]; then
+  if (( WAIT_ARENA <= 0 )); then
+    echo "[driver] ERROR: arena busy with another job's battles:" >&2
+    foreign | sed 's/^/    /' >&2
+    exit 3
+  fi
+  echo "[driver] arena busy — waiting up to ${WAIT_ARENA} min:"
+  foreign | sed 's/^/    /'
+  deadline=$(( $(date +%s) + WAIT_ARENA * 60 ))
+  while :; do
+    sleep 60
+    if [[ -z "$(foreign)" ]]; then echo "[driver] arena free."; break; fi
+    if (( $(date +%s) >= deadline )); then
+      echo "[driver] ERROR: arena still busy after ${WAIT_ARENA} min; NOT starting." >&2
+      exit 3
+    fi
+    echo "[driver] still busy at $(date +%H:%M:%S)"
+  done
+fi
+
+mkdir -p "$OUTDIR"
+echo "[driver] building frozen ModularBot…"
+"$BIN" --outdir "$OUTDIR" --build-only
+
+read -r -a ARMS <<< "$ARMS_STR"
+PIDS=()
+cleanup() {
+  local rc=$?
+  trap - EXIT INT TERM
+  for p in "${PIDS[@]:-}"; do
+    [[ -n "$p" ]] || continue
+    kill -TERM -- "-$p" 2>/dev/null || true
+  done
+  sleep 1
+  for p in "${PIDS[@]:-}"; do
+    [[ -n "$p" ]] || continue
+    kill -KILL -- "-$p" 2>/dev/null || true
+  done
+  pkill -f "[m]easure_melee_strong_field.*$OUTDIR" 2>/dev/null || true
+  exit "$rc"
+}
+trap cleanup EXIT INT TERM
+
+for arm in "${ARMS[@]}"; do
+  echo "[driver] launching arm $arm (runs=$RUNS rounds=$ROUNDS) field=$MELEE_FIELD"
+  setsid "$BIN" --outdir "$OUTDIR" --arm "$arm" \
+      --run-start 1 --run-count "$RUNS" --rounds "$ROUNDS" \
+      > "$OUTDIR/$arm.driver.log" 2>&1 &
+  PIDS+=("$!")
+  sleep 3   # stagger so concurrent servers do not race for the same free port
+done
+
+echo "[driver] all arms launched; waiting…"
+FAIL=0
+for p in "${PIDS[@]}"; do
+  wait "$p" || FAIL=$((FAIL + 1))
+done
+PIDS=()
+echo "[driver] done (failed arm processes: $FAIL)"
+exit "$FAIL"