src/share/vm/oops/methodData.hpp

rev 5968 : 8031320: Use Intel RTM instructions for locks
Summary: Use RTM for inflated locks and stack locks.
Reviewed-by: iveresov, twisti, roland, dcubed

*** 1859,1869 ****
  
    bool is_methodData() const volatile { return true; }
  
    // Whole-method sticky bits and flags
    enum {
!     _trap_hist_limit    = 18,   // decoupled from Deoptimization::Reason_LIMIT
      _trap_hist_mask     = max_jubyte,
      _extra_data_count   = 4     // extra DataLayout headers, for trap history
    }; // Public flag values
  private:
    uint _nof_decompiles;             // count of all nmethod removals
--- 1859,1869 ----
  
    bool is_methodData() const volatile { return true; }
  
    // Whole-method sticky bits and flags
    enum {
!     _trap_hist_limit    = 19,   // decoupled from Deoptimization::Reason_LIMIT
      _trap_hist_mask     = max_jubyte,
      _extra_data_count   = 4     // extra DataLayout headers, for trap history
    }; // Public flag values
  private:
    uint _nof_decompiles;             // count of all nmethod removals
*** 1890,1899 ****
--- 1890,1905 ----
    // Same for backedges.
    InvocationCounter _backedge_counter;
    // Counter values at the time profiling started.
    int               _invocation_counter_start;
    int               _backedge_counter_start;
+ 
+ #if INCLUDE_RTM_OPT
+   // State of RTM code generation during compilation of the method
+   int               _rtm_state;
+ #endif
+ 
    // Number of loops and blocks is computed when compiling the first
    // time with C1. It is used to determine if method is trivial.
    short             _num_loops;
    short             _num_blocks;
    // Highest compile level this method has ever seen.
*** 2053,2062 ****
--- 2059,2084 ----
    }
  
    InvocationCounter* invocation_counter()     { return &_invocation_counter; }
    InvocationCounter* backedge_counter()       { return &_backedge_counter;   }
  
+ #if INCLUDE_RTM_OPT
+   int rtm_state() const {
+     return _rtm_state;
+   }
+   void set_rtm_state(RTMState rstate) {
+     _rtm_state = (int)rstate;
+   }
+   void atomic_set_rtm_state(RTMState rstate) {
+     Atomic::store((int)rstate, &_rtm_state);
+   }
+ 
+   static int rtm_state_offset_in_bytes() {
+     return offset_of(MethodData, _rtm_state);
+   }
+ #endif
+ 
    void set_would_profile(bool p)              { _would_profile = p;    }
    bool would_profile() const                  { return _would_profile; }
  
    int highest_comp_level() const              { return _highest_comp_level;      }
    void set_highest_comp_level(int level)      { _highest_comp_level = level;     }