- Wire the stack frame iterator to use stack maps for traversing objects if there are stack maps in…

vm/stack_frame.h

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_STACK_FRAME_H_
 #define VM_STACK_FRAME_H_
 
 #include "vm/allocation.h"
 #include "vm/object.h"
 #include "vm/stub_code.h"
@@ skipping 36 matching lines @@
 
   // Check validity of a frame, used for assertion purposes.
   virtual bool IsValid() const { return false; }
 
   // Frame type.
   virtual bool IsDartFrame() const { return false; }
   virtual bool IsStubFrame() const { return false; }
   virtual bool IsEntryFrame() const { return false; }
   virtual bool IsExitFrame() const { return false; }
 
+  // Find code object corresponding to pc (valid only for DartFrame and
+  // StubFrame.
+  static RawCode* LookupCode(Isolate* isolate, uword pc);
+
  protected:
   StackFrame() : fp_(0), sp_(0) { }
 
   // Name of the frame, used for generic frame printing functionality.
   virtual const char* GetName() const = 0;
 
  private:
+  // An object finder visitor interface.
+  class FindRawCodeVisitor : public FindObjectVisitor {
+   public:
+    explicit FindRawCodeVisitor(uword pc) : pc_(pc) { }
+    virtual ~FindRawCodeVisitor() { }
+
+    // Check if object matches find condition.
+    virtual bool FindObject(RawObject* obj);
+
+   private:
+    uword pc_;
+
+    DISALLOW_COPY_AND_ASSIGN(FindRawCodeVisitor);
+  };
+
   // Target specific implementations for locating pc and caller fp/sp values.
   static intptr_t PcAddressOffsetFromSp();
   uword GetCallerSp() const;
   uword GetCallerFp() const;
 
   uword fp_;
   uword sp_;
 
   // The iterators FrameSetIterator and StackFrameIterator set the private
   // fields fp_ and sp_ when they return the respective frame objects.
@@ skipping 184 matching lines @@
 
  private:
   StackFrameIterator frames_;
 
   DISALLOW_COPY_AND_ASSIGN(DartFrameIterator);
 };
 
 }  // namespace dart
 
 #endif  // VM_STACK_FRAME_H_