Add inspection of function for optimized frames

src/deoptimizer.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 647 matching lines @@
  public:
   DeoptimizedFrameInfo(Deoptimizer* deoptimizer, int frame_index);
   virtual ~DeoptimizedFrameInfo();
 
   // GC support.
   void Iterate(ObjectVisitor* v);
 
   // Return the height of the expression stack.
   int expression_count() { return expression_count_; }
 
+  // Get the frame function.
+  Object* GetFunction() {

[Sven Panne, 2011/07/06 12:24:19]

Why should we make the typing weaker here than it is? Returning JSFunction*
seems to be more appropriate, even when we currently only need an Object*.

[Søren Thygesen Gjesse, 2011/07/06 13:01:43]

Good point, changed to JSFunction*.

+    return function_;
+  }
+
   // Get an expression from the expression stack.
   Object* GetExpression(int index) {
     ASSERT(0 <= index && index < expression_count());
     return expression_stack_[index];
   }
 
  private:
+  // Set the frame function.
+  void SetFunction(JSFunction* function) {
+    function_ = function;
+  }
+
   // Set an expression on the expression stack.
   void SetExpression(int index, Object* obj) {
     ASSERT(0 <= index && index < expression_count());
     expression_stack_[index] = obj;
   }
 
+  Object* function_;
   int expression_count_;
   Object** expression_stack_;
 
   friend class Deoptimizer;
 };
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_DEOPTIMIZER_H_