src/hotspot/share/utilities/globalDefinitions.hpp

*** 1339,6 ***
--- 1339,16 ---
  
  // Quickly test to make sure IEEE-754 subnormal numbers are correctly
  // handled.
  bool IEEE_subnormal_handling_OK();
  
+ #if defined(AMD64) || defined (AARCH64)
+ #define LOOM_MONITOR_SUPPORT true
+ #define LOOM_MONITOR_SUPPORT_ONLY(code) code
+ #define NOT_LOOM_MONITOR_SUPPORT(code)
+ #else
+ #undef LOOM_MONITOR_SUPPORT
+ #define LOOM_MONITOR_SUPPORT_ONLY(code)
+ #define NOT_LOOM_MONITOR_SUPPORT(code) code
+ #endif
+ 
  #endif // SHARE_UTILITIES_GLOBALDEFINITIONS_HPP