# library-prefix = perf_sysbench
#
# sysbench multi-threaded benchmark suite-level shared library
# Measures OS performance: CPU, memory, threads, mutex, file I/O.
#
# Key metrics (from Testing-Guide):
#   CPU: events/sec (higher=better)
#   Memory: MiB/sec (higher=better)
#   Threads: eps + 95% latency + fairness (avg/stddev)
#   Mutex: lock throughput (threads * locks / time)
#   FileIO: MiB/sec throughput
#
# Usage: . "$(dirname "$0")/../lib.sh"

SYSBENCH_FLAG="/tmp/.beakerlib_sysbench_suite"

sysbenchSetup() {
    if [ ! -f "$SYSBENCH_FLAG" ]; then
        if ! rpm -q sysbench 2>/dev/null; then
            echo openruyi | sudo -S dnf install -y sysbench 2>/dev/null
            echo "installed=1" > "$SYSBENCH_FLAG"
            rlLogInfo "已安装 sysbench"
        else
            echo "installed=0" > "$SYSBENCH_FLAG"
        fi
        echo "ref=1" >> "$SYSBENCH_FLAG"
    else
        local ref
        ref=$(grep "^ref=" "$SYSBENCH_FLAG" | cut -d= -f2)
        ref=$((ref + 1))
        sed -i "s/^ref=.*/ref=$ref/" "$SYSBENCH_FLAG"
    fi
    rlCleanupAppend "sysbenchCleanup"
}

sysbenchCleanup() {
    if [ ! -f "$SYSBENCH_FLAG" ]; then return 0; fi
    local ref
    ref=$(grep "^ref=" "$SYSBENCH_FLAG" | cut -d= -f2)
    ref=$((ref - 1))
    if [ "$ref" -le 0 ]; then
        grep -q "^installed=1" "$SYSBENCH_FLAG" && echo openruyi | sudo -S dnf remove -y sysbench 2>/dev/null || true
        rm -f "$SYSBENCH_FLAG"
    else
        sed -i "s/^ref=.*/ref=$ref/" "$SYSBENCH_FLAG"
    fi
}

# Parse sysbench output for key metrics
_sysbenchParse() {
    local log="$1"
    [ ! -f "$log" ] && return 1
    echo "--- sysbench 结果 ---"
    grep -E "total time:|total number of events|events per second|avg:|95th percentile|events.*avg/stddev|MiB/sec|transferred" "$log" | head -10
    echo "---"
}