Fix asserts in StartPreemption and StopPreemption.

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 393 matching lines @@
   : Thread(isolate, "v8:CtxtSwitcher"),
     keep_going_(true),
     sleep_ms_(every_n_ms) {
 }
 
 
 // Set the scheduling interval of V8 threads. This function starts the
 // ContextSwitcher thread if needed.
 void ContextSwitcher::StartPreemption(int every_n_ms) {
   Isolate* isolate = Isolate::Current();
-  ASSERT(Locker::IsLocked());
+  ASSERT(Locker::IsLocked(isolate));
   if (isolate->context_switcher() == NULL) {
     // If the ContextSwitcher thread is not running at the moment start it now.
     isolate->set_context_switcher(new ContextSwitcher(isolate, every_n_ms));
     isolate->context_switcher()->Start();
   } else {
     // ContextSwitcher thread is already running, so we just change the
     // scheduling interval.
     isolate->context_switcher()->sleep_ms_ = every_n_ms;
   }
 }
 
 
 // Disable preemption of V8 threads. If multiple threads want to use V8 they
 // must cooperatively schedule amongst them from this point on.
 void ContextSwitcher::StopPreemption() {
   Isolate* isolate = Isolate::Current();
-  ASSERT(Locker::IsLocked());
+  ASSERT(Locker::IsLocked(isolate));
   if (isolate->context_switcher() != NULL) {
     // The ContextSwitcher thread is running. We need to stop it and release
     // its resources.
     isolate->context_switcher()->keep_going_ = false;
     // Wait for the ContextSwitcher thread to exit.
     isolate->context_switcher()->Join();
     // Thread has exited, now we can delete it.
     delete(isolate->context_switcher());
     isolate->set_context_switcher(NULL);
   }
@@ skipping 13 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