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

src/disassembler.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 47 matching lines @@
   explicit V8NameConverter(Code* code) : code_(code) {}
   virtual const char* NameOfAddress(byte* pc) const;
   virtual const char* NameInCode(byte* addr) const;
   Code* code() const { return code_; }
  private:
   Code* code_;
 };
 
 
 const char* V8NameConverter::NameOfAddress(byte* pc) const {
-  static v8::internal::EmbeddedVector<char, 128> buffer;
+  v8::internal::EmbeddedVector<char, 128> buffer =
+    v8_context()->disassembler_data_->buffer_;
 
   const char* name = Builtins::Lookup(pc);
   if (name != NULL) {
     OS::SNPrintF(buffer, "%s  (%p)", name, pc);
     return buffer.start();
   }
 
   if (code_ != NULL) {
     int offs = static_cast<int>(pc - code_->instruction_start());
     // print as code offset, if it seems reasonable
@@ skipping 221 matching lines @@
 
 
 // Called by Code::CodePrint.
 void Disassembler::Decode(FILE* f, Code* code) {
   byte* begin = Code::cast(code)->instruction_start();
   byte* end = begin + Code::cast(code)->instruction_size();
   V8NameConverter v8NameConverter(code);
   DecodeIt(f, v8NameConverter, begin, end);
 }
 
+void Disassembler::PostConstruct() {
+  v8_context()->disassembler_data_ = new disasm::DisassemblerData();
+}
+
+void Disassembler::PreDestroy() {
+  delete v8_context()->disassembler_data_;
+}
+
 #else  // ENABLE_DISASSEMBLER
 
 void Disassembler::Dump(FILE* f, byte* begin, byte* end) {}
 int Disassembler::Decode(FILE* f, byte* begin, byte* end) { return 0; }
 void Disassembler::Decode(FILE* f, Code* code) {}
 
 #endif  // ENABLE_DISASSEMBLER
 
 } }  // namespace v8::internal