src/hotspot/share/runtime/arguments.hpp

*** 356,365 ****
--- 356,368 ----
    // -Xdebug flag
    static bool _xdebug_mode;
    static void set_xdebug_mode(bool arg) { _xdebug_mode = arg; }
    static bool xdebug_mode()             { return _xdebug_mode; }
  
+   // preview features
+   static bool _enable_preview;
+ 
    // Used to save default settings
    static bool _AlwaysCompileLoopMethods;
    static bool _UseOnStackReplacement;
    static bool _BackgroundCompilation;
    static bool _ClipInlining;
*** 689,698 ****
--- 692,704 ----
  
    // Operation modi
    static Mode mode()                        { return _mode; }
    static bool is_interpreter_only() { return mode() == _int; }
  
+   // preview features
+   static void set_enable_preview() { _enable_preview = true; }
+   static bool enable_preview() { return _enable_preview; }
  
    // Utility: copies src into buf, replacing "%%" with "%" and "%p" with pid.
    static bool copy_expand_pid(const char* src, size_t srclen, char* buf, size_t buflen);
  
    static void check_unsupported_dumping_properties() NOT_CDS_RETURN;