Basic implementation of incremental marking.

src/liveedit.cc

 // Copyright 2010 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 846 matching lines @@
   }
 
   // Post-visiting method that iterates over all collected references and
   // modifies them.
   void Replace(Code* substitution) {
     for (int i = 0; i < rvalues_.length(); i++) {
       *(rvalues_[i]) = substitution;
     }
     Address substitution_entry = substitution->instruction_start();
     for (int i = 0; i < reloc_infos_.length(); i++) {
-      reloc_infos_[i].set_target_address(substitution_entry);
+      reloc_infos_[i].set_target_address(substitution_entry, NULL);
+      // TODO(gc) more precise barrier.
+      IncrementalMarking::RecordWriteOf(substitution);
     }
     for (int i = 0; i < code_entries_.length(); i++) {
       Address entry = code_entries_[i];
       Memory::Address_at(entry) = substitution_entry;
     }
   }
 
  private:
   Code* original_;
   ZoneList<Object**> rvalues_;
@@ skipping 404 matching lines @@
   Handle<SharedFunctionInfo> parent_shared =
       Handle<SharedFunctionInfo>::cast(UnwrapJSValue(parent_function_wrapper));
   Handle<SharedFunctionInfo> orig_shared =
       Handle<SharedFunctionInfo>::cast(UnwrapJSValue(orig_function_wrapper));
   Handle<SharedFunctionInfo> subst_shared =
       Handle<SharedFunctionInfo>::cast(UnwrapJSValue(subst_function_wrapper));
 
   for (RelocIterator it(parent_shared->code()); !it.done(); it.next()) {
     if (it.rinfo()->rmode() == RelocInfo::EMBEDDED_OBJECT) {
       if (it.rinfo()->target_object() == *orig_shared) {
-        it.rinfo()->set_target_object(*subst_shared);
+        it.rinfo()->set_target_object(*subst_shared, NULL);
       }
     }
   }
 }
 
 
 // Check an activation against list of functions. If there is a function
 // that matches, its status in result array is changed to status argument value.
 static bool CheckActivation(Handle<JSArray> shared_info_array,
                             Handle<JSArray> result,
@@ skipping 338 matching lines @@
 
 bool LiveEditFunctionTracker::IsActive() {
   return false;
 }
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 
 
 } }  // namespace v8::internal