stop (Debugger)

    /*
     *   call-seq:
     *      Debugger.stop -> bool
     *
     *   This method disables the debugger. It returns +true+ if the debugger is disabled,
     *   otherwise it returns +false+.
     *
     *   <i>Note that if you want to stop debugger, you must call
     *   Debugger.stop as many times as you called Debugger.start
     *   method.</i>
     */
    static VALUE
    debug_stop(VALUE self)
    {
        debug_check_started();

        start_count--;
        if(start_count)
            return Qfalse;

        rb_remove_event_hook(debug_event_hook);

        locker      = Qnil;
        breakpoints = Qnil;
        threads_tbl = Qnil;

        return Qtrue;
    }