#!/bin/bash

# 180秒クラッシュ診断スクリプト
# 目的: 複数回テストを実行し、クラッシュ直前のログパターンを抽出

set -e

WORKDIR="/mnt/workdisk/public_share/hakmem"
LOGDIR="/tmp/hakmem_diagnostic"
mkdir -p "$LOGDIR"

echo "=== Hakmem 180s Crash Diagnosis ==="
echo "Log directory: $LOGDIR"
echo ""

# テスト設定
NUM_RUNS=3
TIMEOUT_SEC=190

# 環境設定（既知の診断ログのみ有効化）
export LD_PRELOAD="$WORKDIR/libhakmem.so"
export LD_LIBRARY_PATH="$WORKDIR"
# デバッグ出力抑制
unset HAKMEM_TINY_SLL_NEXTCLS
unset HAKMEM_TINY_SLL_NEXTTAG
unset HAKMEM_TINY_SLL_HEADCLS
unset HAKMEM_DEBUG_COUNTER
unset HAK_DEBUG_LOG_FREQ

echo "Running $NUM_RUNS iterations of 180-second test..."
echo ""

for i in $(seq 1 $NUM_RUNS); do
    echo "--- Run $i/$NUM_RUNS ---"
    LOGFILE="$LOGDIR/run_${i}.log"

    START_TIME=$(date +%s)

    # タイムアウト付きでテスト実行
    if timeout $TIMEOUT_SEC env \
        LD_PRELOAD="$LD_PRELOAD" \
        LD_LIBRARY_PATH="$LD_LIBRARY_PATH" \
        "$WORKDIR/mimalloc-bench/out/bench/sh8bench" > "$LOGFILE" 2>&1; then
        EXIT_CODE=$?
        RESULT="PASS"
    else
        EXIT_CODE=$?
        RESULT="FAIL"
    fi

    END_TIME=$(date +%s)
    ELAPSED=$((END_TIME - START_TIME))

    echo "  Result: $RESULT (exit code: $EXIT_CODE, elapsed: ${ELAPSED}s)"
    echo "  Log: $LOGFILE"

    # クラッシュ/エラーのキーワードを検索
    if grep -q "SIGSEGV\|Segmentation\|ERROR\|FATAL" "$LOGFILE" 2>/dev/null; then
        echo "  ⚠️  CRASH DETECTED"

        # ログの最後 50 行を表示
        echo "  === Last 50 lines of log ==="
        tail -50 "$LOGFILE" | sed 's/^/  /'
    else
        echo "  ✓ No crash detected"
        # テール 10 行を表示
        echo "  === Last 10 lines ==="
        tail -10 "$LOGFILE" | sed 's/^/  /'
    fi

    echo ""
done

echo "=== Summary ==="
echo ""

# 各ログファイルのサイズと最終行
for i in $(seq 1 $NUM_RUNS); do
    LOGFILE="$LOGDIR/run_${i}.log"
    SIZE=$(wc -c < "$LOGFILE")
    LAST=$(tail -1 "$LOGFILE" 2>/dev/null || echo "(empty)")
    echo "Run $i: $SIZE bytes"
    echo "  Last line: $LAST"
done

echo ""
echo "=== Diagnostic Patterns ==="
echo ""

# すべてのログを結合して、エラーパターンをマイニング
cat "$LOGDIR"/*.log 2>/dev/null | \
    grep -E "\[.*\]" | \
    sort | uniq -c | sort -rn | head -20 | \
    sed 's/^/  /'

echo ""
echo "=== Crash Analysis ==="
echo ""

# SIGSEGV が出たかどうか
CRASH_COUNT=$(grep -l "SIGSEGV\|Segmentation" "$LOGDIR"/*.log 2>/dev/null | wc -l)
if [ "$CRASH_COUNT" -gt 0 ]; then
    echo "✓ Crashes detected in $CRASH_COUNT/$NUM_RUNS runs"
    echo ""
    echo "Last crash log:"
    LAST_CRASH=$(grep -l "SIGSEGV\|Segmentation" "$LOGDIR"/*.log 2>/dev/null | tail -1)
    tail -100 "$LAST_CRASH" | sed 's/^/  /'
else
    echo "✗ No crashes detected in any run"
    echo ""
    echo "This suggests either:"
    echo "  1. The 180s crash is NOT reproducible in current build"
    echo "  2. Crash requires specific conditions/load patterns"
    echo "  3. Issue may have been fixed"
fi

echo ""
echo "Diagnosis complete. Check $LOGDIR for full logs."