Added labelled thread names to help with some debugging activity. Right now,...

src/debug.cc

 // Copyright 2006-2008 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 3019 matching lines @@
 }
 
 
 void LockingCommandMessageQueue::Clear() {
   ScopedLock sl(lock_);
   queue_.Clear();
 }
 
 
 MessageDispatchHelperThread::MessageDispatchHelperThread()
-    : sem_(OS::CreateSemaphore(0)), mutex_(OS::CreateMutex()),
+    :
+#ifdef DEBUG_THREAD_NAMES
+      Thread("v8:MsgDispHelpr"),
+#endif
+      sem_(OS::CreateSemaphore(0)), mutex_(OS::CreateMutex()),
       already_signalled_(false) {
 }
 
 
 MessageDispatchHelperThread::~MessageDispatchHelperThread() {
   delete mutex_;
   delete sem_;
 }
 
 
@@ skipping 19 matching lines @@
     {
       Locker locker;
       Debugger::CallMessageDispatchHandler();
     }
   }
 }
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 } }  // namespace v8::internal