src/share/vm/oops/methodCounters.hpp

*** 47,65 ****
    int               _nmethod_age;
  
  #ifdef TIERED
    float             _rate;                        // Events (invocation and backedge counter increments) per millisecond
    jlong             _prev_time;                   // Previous time the rate was acquired
  #endif
  
    MethodCounters() : _interpreter_invocation_count(0),
                       _interpreter_throwout_count(0),
                       _number_of_breakpoints(0),
                       _nmethod_age(INT_MAX)
  #ifdef TIERED
                     , _rate(0),
!                      _prev_time(0)
  #endif
    {
      invocation_counter()->init();
      backedge_counter()->init();
  
--- 47,69 ----
    int               _nmethod_age;
  
  #ifdef TIERED
    float             _rate;                        // Events (invocation and backedge counter increments) per millisecond
    jlong             _prev_time;                   // Previous time the rate was acquired
+   u1                _highest_comp_level;          // Highest compile level this method has ever seen.
+   u1                _highest_osr_comp_level;      // Same for OSR level
  #endif
  
    MethodCounters() : _interpreter_invocation_count(0),
                       _interpreter_throwout_count(0),
                       _number_of_breakpoints(0),
                       _nmethod_age(INT_MAX)
  #ifdef TIERED
                     , _rate(0),
!                      _prev_time(0),
!                      _highest_comp_level(0),
!                      _highest_osr_comp_level(0)
  #endif
    {
      invocation_counter()->init();
      backedge_counter()->init();
  
*** 112,121 ****
--- 116,130 ----
    void set_prev_time(jlong time)                 { _prev_time = time; }
    float rate() const                             { return _rate; }
    void set_rate(float rate)                      { _rate = rate; }
  #endif
  
+   int highest_comp_level() const;
+   void set_highest_comp_level(int level);
+   int highest_osr_comp_level() const;
+   void set_highest_osr_comp_level(int level);
+ 
    // invocation counter
    InvocationCounter* invocation_counter() { return &_invocation_counter; }
    InvocationCounter* backedge_counter()   { return &_backedge_counter; }
  
    int nmethod_age() {