[Isolates] Avoid dereferencing Isolate::Current() to check oddball identities...

src/isolate.h

 // 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 1121 matching lines @@
 
 // Temporary macros for accessing fields off the global isolate. Define these
 // when reformatting code would become burdensome.
 #define HEAP (v8::internal::Isolate::Current()->heap())
 #define ZONE (v8::internal::Isolate::Current()->zone())
 #define LOGGER (v8::internal::Isolate::Current()->logger())
 
 
 // Tells whether the global context is marked with out of memory.
 inline bool Context::has_out_of_memory() {
-  return global_context()->out_of_memory() == HEAP->true_value();
+  return global_context()->out_of_memory()->IsTrue();
 }
 
 
 // Mark the global context with out of memory.
 inline void Context::mark_out_of_memory() {
   global_context()->set_out_of_memory(HEAP->true_value());
 }
 
 
 // Temporary macro to be used to flag definitions that are indeed static
@@ skipping 11 matching lines @@
 #define ISOLATED_CLASS class
 
 } }  // namespace v8::internal
 
 // TODO(isolates): Get rid of these -inl.h includes and place them only where
 //                 they're needed.
 #include "allocation-inl.h"
 #include "zone-inl.h"
 
 #endif  // V8_ISOLATE_H_