Per-isolate v8::Locker and v8::Unlocker

src/assembler.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 655 matching lines @@
   // Function NativeRegExpMacroAssembler::GrowStack()
   static ExternalReference re_grow_stack(Isolate* isolate);
 
   // byte NativeRegExpMacroAssembler::word_character_bitmap
   static ExternalReference re_word_character_map();
 
 #endif
 
   // This lets you register a function that rewrites all external references.
   // Used by the ARM simulator to catch calls to external references.
-  static void set_redirector(ExternalReferenceRedirector* redirector) {
+  static void set_redirector(Isolate* isolate,
+                             ExternalReferenceRedirector* redirector) {
     // We can't stack them.
-    ASSERT(Isolate::Current()->external_reference_redirector() == NULL);
-    Isolate::Current()->set_external_reference_redirector(
+    ASSERT(isolate->external_reference_redirector() == NULL);
+    isolate->set_external_reference_redirector(
         reinterpret_cast<ExternalReferenceRedirectorPointer*>(redirector));
   }
 
  private:
   explicit ExternalReference(void* address)
       : address_(address) {}
 
   static void* Redirect(Isolate* isolate,
                         void* address,
                         Type type = ExternalReference::BUILTIN_CALL) {
@@ skipping 171 matching lines @@
  public:
   NullCallWrapper() { }
   virtual ~NullCallWrapper() { }
   virtual void BeforeCall(int call_size) const { }
   virtual void AfterCall() const { }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ASSEMBLER_H_