Patch for allowing several V8 instances in process:...

src/code-stubs.cc

 // Copyright 2006-2008 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 41 matching lines @@
     index = Heap::code_stubs()->FindEntry(key);
     if (index != NumberDictionary::kNotFound)
       return Handle<Code>(Code::cast(Heap::code_stubs()->ValueAt(index)));
   }
 
   Code* result;
   {
     v8::HandleScope scope;
 
     // Update the static counter each time a new code stub is generated.
-    Counters::code_stubs.Increment();
+    INC_COUNTER(code_stubs);
 
     // Generate the new code.
     MacroAssembler masm(NULL, 256);
 
     // Nested stubs are not allowed for leafs.
     masm.set_allow_stub_calls(AllowsStubCalls());
 
     // Generate the code for the stub.
     masm.set_generating_stub(true);
     Generate(&masm);
 
     // Create the code object.
     CodeDesc desc;
     masm.GetCode(&desc);
 
     // Copy the generated code into a heap object, and store the major key.
     Code::Flags flags = Code::ComputeFlags(Code::STUB, InLoop());
     Handle<Code> code = Factory::NewCode(desc, NULL, flags, masm.CodeObject());
     code->set_major_key(MajorKey());
 
     // Add unresolved entries in the code to the fixup list.
     Bootstrapper::AddFixup(*code, &masm);
 
     LOG(CodeCreateEvent(Logger::STUB_TAG, *code, GetName()));
-    Counters::total_stubs_code_size.Increment(code->instruction_size());
+    INCREMENT_COUNTER(total_stubs_code_size, code->instruction_size());
 
 #ifdef ENABLE_DISASSEMBLER
     if (FLAG_print_code_stubs) {
 #ifdef DEBUG
       Print();
 #endif
       code->Disassemble(GetName());
       PrintF("\n");
     }
 #endif
@@ skipping 22 matching lines @@
     CODE_STUB_LIST(DEF_CASE)
 #undef DEF_CASE
     default:
       UNREACHABLE();
       return NULL;
   }
 }
 
 
 } }  // namespace v8::internal