X64: Disabled RSet in 64-bit mode.

src/v8threads.cc

 // Copyright 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 243 matching lines @@
   ASSERT(state->id() == kInvalidId);
   state->set_id(CurrentId());
   ASSERT(state->id() != kInvalidId);
 }
 
 
 void ThreadManager::EagerlyArchiveThread() {
   ThreadState* state = lazily_archived_thread_state_;
   state->LinkInto(ThreadState::IN_USE_LIST);
   char* to = state->data();
+  // Ensure that data containing GC roots are archived first, and handle them
+  // in ThreadManager::Iterate(ObjectVisitor*).
   to = HandleScopeImplementer::ArchiveThread(to);
   to = Top::ArchiveThread(to);
 #ifdef ENABLE_DEBUGGER_SUPPORT
   to = Debug::ArchiveDebug(to);
 #endif
   to = StackGuard::ArchiveStackGuard(to);
   to = RegExpStack::ArchiveStack(to);
   to = Bootstrapper::ArchiveState(to);
   lazily_archived_thread_.Initialize(ThreadHandle::INVALID);
   lazily_archived_thread_state_ = NULL;
@@ skipping 102 matching lines @@
 // Acknowledge the preemption by the receiving thread.
 void ContextSwitcher::PreemptionReceived() {
   ASSERT(Locker::IsLocked());
   // There is currently no accounting being done for this. But could be in the
   // future, which is why we leave this in.
 }
 
 
 }  // namespace internal
 }  // namespace v8