[Isolates] Fix debugger and termination APIs callable from other threads.

src/isolate.cc

 // Copyright 2006-2010 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 236 matching lines @@
     thread_data_table_ = new Isolate::ThreadDataTable();
     default_isolate_ = new Isolate();
   }
   // Can't use SetIsolateThreadLocals(default_isolate_, NULL) here
   // becase a non-null thread data may be already set.
   Thread::SetThreadLocal(isolate_key_, default_isolate_);
   CHECK(default_isolate_->PreInit());
 }
 
 
+Debugger* Isolate::GetDefaultIsolateDebugger() {
+  EnsureDefaultIsolate();
+  return default_isolate_->debugger();
+}
+
+
+StackGuard* Isolate::GetDefaultIsolateStackGuard() {
+  EnsureDefaultIsolate();
+  return default_isolate_->stack_guard();
+}
+
+
 void Isolate::EnterDefaultIsolate() {
   EnsureDefaultIsolate();
   ASSERT(default_isolate_ != NULL);
 
   PerIsolateThreadData* data = CurrentPerIsolateThreadData();
   // If not yet in default isolate - enter it.
   if (data == NULL || data->isolate() != default_isolate_) {
     default_isolate_->Enter();
   }
 }
@@ skipping 537 matching lines @@
 
 #ifdef DEBUG
 #define ISOLATE_FIELD_OFFSET(type, name, ignored)                       \
 const intptr_t Isolate::name##_debug_offset_ = OFFSET_OF(Isolate, name##_);
 ISOLATE_INIT_LIST(ISOLATE_FIELD_OFFSET)
 ISOLATE_INIT_ARRAY_LIST(ISOLATE_FIELD_OFFSET)
 #undef ISOLATE_FIELD_OFFSET
 #endif
 
 } }  // namespace v8::internal