Ensure the debugger keeps a reference to code objects

runtime/vm/debugger.h

 // Copyright (c) 2012, 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_DEBUGGER_H_
 #define VM_DEBUGGER_H_
 
 #include "include/dart_debugger_api.h"
 
 #include "vm/object.h"
@@ skipping 56 matching lines @@
   friend class Debugger;
   DISALLOW_COPY_AND_ASSIGN(SourceBreakpoint);
 };
 
 
 // CodeBreakpoint represents a location in compiled code. There may be
 // more than one CodeBreakpoint for one SourceBreakpoint, e.g. when a
 // function gets compiled as a regular function and as a closure.
 class CodeBreakpoint {
  public:
-  CodeBreakpoint(const Function& func, intptr_t pc_desc_index);
+  CodeBreakpoint(const Code& code, intptr_t pc_desc_index);
   ~CodeBreakpoint();
 
-  RawFunction* function() const { return function_; }
+  RawFunction* function() const;
   uword pc() const { return pc_; }
   intptr_t token_pos() const { return token_pos_; }
   bool IsInternal() const { return src_bpt_ == NULL; }
 
   RawScript* SourceCode();
   RawString* SourceUrl();
   intptr_t LineNumber();
 
   void Enable();
   void Disable();
   bool IsEnabled() const { return is_enabled_; }
 
   uword OrigStubAddress() const;
 
  private:
   void VisitObjectPointers(ObjectPointerVisitor* visitor);
 
   SourceBreakpoint* src_bpt() const { return src_bpt_; }
   void set_src_bpt(SourceBreakpoint* value) { src_bpt_ = value; }
 
   void set_next(CodeBreakpoint* value) { next_ = value; }
   CodeBreakpoint* next() const { return this->next_; }
   intptr_t pc_desc_index() const { return pc_desc_index_; }
 
   void PatchCode();
   void RestoreCode();
 
-  RawFunction* function_;
+  RawCode* code_;
   intptr_t pc_desc_index_;
   intptr_t token_pos_;
   uword pc_;
   intptr_t line_number_;
   bool is_enabled_;
 
   SourceBreakpoint* src_bpt_;
   CodeBreakpoint* next_;
 
   PcDescriptors::Kind breakpoint_kind_;
@@ skipping 192 matching lines @@
   const DebuggerEvent* PauseEvent() const { return pause_event_; }
 
   void SetExceptionPauseInfo(Dart_ExceptionPauseInfo pause_info);
   Dart_ExceptionPauseInfo GetExceptionPauseInfo();
 
   void VisitObjectPointers(ObjectPointerVisitor* visitor);
 
   // Called from Runtime when a breakpoint in Dart code is reached.
   void BreakpointCallback();
 
-  // Returns true if there is at least one breakpoint set in func.
+  // Returns true if there is at least one breakpoint set in func or code.
   // Checks for both user-defined and internal temporary breakpoints.
   bool HasBreakpoint(const Function& func);
+  bool HasBreakpoint(const Code& code);
 
   // Returns true if the call at address pc is patched to point to
   // a debugger stub.
   bool HasActiveBreakpoint(uword pc);
 
   // Returns a stack trace with frames corresponding to invisible functions
   // omitted. CurrentStackTrace always returns a new trace on the current stack.
   // The trace returned by StackTrace may have been cached; it is suitable for
   // use when stepping, but otherwise may be out of sync with the current stack.
   DebuggerStackTrace* StackTrace();
@@ skipping 142 matching lines @@
 
   friend class Isolate;
   friend class SourceBreakpoint;
   DISALLOW_COPY_AND_ASSIGN(Debugger);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_DEBUGGER_H_