New approach to Crankshaft decision-making

src/api.cc

 // Copyright 2011 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 712 matching lines @@
   if (!ApiCheck(isolate->handle_scope_implementer()->LeaveLastContext(),
                 "v8::Context::Exit()",
                 "Cannot exit non-entered context")) {
     return;
   }
 
   // Content of 'last_context' could be NULL.
   i::Context* last_context =
       isolate->handle_scope_implementer()->RestoreContext();
   isolate->set_context(last_context);
+  isolate->set_context_exit_happened(true);
 }
 
 
 void Context::SetData(v8::Handle<String> data) {
   i::Handle<i::Context> env = Utils::OpenHandle(this);
   i::Isolate* isolate = env->GetIsolate();
   if (IsDeadCheck(isolate, "v8::Context::SetData()")) return;
   i::Handle<i::Object> raw_data = Utils::OpenHandle(*data);
   ASSERT(env->IsGlobalContext());
   if (env->IsGlobalContext()) {
@@ skipping 5371 matching lines @@
 
 
 char* HandleScopeImplementer::Iterate(ObjectVisitor* v, char* storage) {
   HandleScopeImplementer* scope_implementer =
       reinterpret_cast<HandleScopeImplementer*>(storage);
   scope_implementer->IterateThis(v);
   return storage + ArchiveSpacePerThread();
 }
 
 } }  // namespace v8::internal