*** old/src/share/vm/oops/instanceKlass.cpp	Fri Sep  9 14:16:12 2011
--- new/src/share/vm/oops/instanceKlass.cpp	Fri Sep  9 14:16:12 2011

*** 1372,1412 ****
--- 1372,1381 ----
    return -1;
  }
  
  
  //
  // nmethodBucket is used to record dependent nmethods for
  // deoptimization.  nmethod dependencies are actually <klass, method>
  // pairs but we really only care about the klass part for purposes of
  // finding nmethods which might need to be deoptimized.  Instead of
  // recording the method, a count of how many times a particular nmethod
  // was recorded is kept.  This ensures that any recording errors are
  // noticed since an nmethod should be removed as many times are it's
  // added.
  //
  class nmethodBucket {
   private:
    nmethod*       _nmethod;
    int            _count;
    nmethodBucket* _next;
  
   public:
    nmethodBucket(nmethod* nmethod, nmethodBucket* next) {
      _nmethod = nmethod;
      _next = next;
      _count = 1;
    }
    int count()                             { return _count; }
    int increment()                         { _count += 1; return _count; }
    int decrement()                         { _count -= 1; assert(_count >= 0, "don't underflow"); return _count; }
    nmethodBucket* next()                   { return _next; }
    void set_next(nmethodBucket* b)         { _next = b; }
    nmethod* get_nmethod()                  { return _nmethod; }
  };
  
  
  //
  // Walk the list of dependent nmethods searching for nmethods which
  // are dependent on the changes that were passed in and mark them for
  // deoptimization.  Returns the number of nmethods found.
  //
  int instanceKlass::mark_dependent_nmethods(DepChange& changes) {