# --- enable/disable this file ---
SRC_ENABLED=true

case "$SRC_ENABLED" in
	1|true|yes|on) unset SRC_ENABLED ;;           # enabled — clean up and continue
	*) unset SRC_ENABLED; return ;;                # disabled — clean up and skip this file
esac
# ---------------------------------

swaptop()
{
    local limit="${1:-10}"
    local width="${2:-200}"
    local p pid swap cmd

    {
        for p in /proc/[0-9]*; do
            [ -r "$p/smaps" ] || continue

            pid="${p##*/}"

            swap=$(awk '
                /^Swap:/    { swap += $2 }
                /^SwapPss:/ { pss += $2; have_pss = 1 }
                END {
                    if (have_pss)
                        print pss
                    else
                        print swap
                }
            ' "$p/smaps" 2>/dev/null)

            [ "${swap:-0}" -gt 0 ] || continue

            cmd=$(tr '\0\t\n' '   ' < "$p/cmdline" 2>/dev/null)

            if [ -z "$cmd" ]; then
                cmd="[$(cat "$p/comm" 2>/dev/null)]"
            fi

            printf '%d\t%s\t%s\n' "$swap" "$pid" "$cmd"
        done
    } |
    sort -nr -k1,1 |
    head -n "$limit" |
    awk -F '\t' -v width="$width" '
        BEGIN {
            printf "%10s  %7s  %s\n", "SWAP", "PID", "COMMAND"
            printf "%10s  %7s  %s\n", "----------", "-------", "-------"
        }
        {
            line = sprintf("%9.1fM  %7s  %s", $1 / 1024, $2, $3)

            if (length(line) > width)
                line = substr(line, 1, width - 3) "..."

            print line
        }
    '
}