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

src/debug-agent.h

Index: src/debug-agent.h
===================================================================
--- src/debug-agent.h	(revision 6114)
+++ src/debug-agent.h	(working copy)
@@ -44,7 +44,11 @@
 class DebuggerAgent: public Thread {
  public:
   explicit DebuggerAgent(const char* name, int port)
-      : name_(StrDup(name)), port_(port),
+      :
+#ifdef DEBUG_THREAD_NAMES
+        Thread(name),
+#endif
+        name_(StrDup(name)), port_(port),
         server_(OS::CreateSocket()), terminate_(false),
         session_access_(OS::CreateMutex()), session_(NULL),
         terminate_now_(OS::CreateSemaphore(0)),
@@ -90,7 +94,11 @@
 class DebuggerAgentSession: public Thread {
  public:
   DebuggerAgentSession(DebuggerAgent* agent, Socket* client)
-      : agent_(agent), client_(client) {}
+      :
+#ifdef DEBUG_THREAD_NAMES
+        Thread("v8:DbgAgntSessn"),
+#endif
+        agent_(agent), client_(client) {}
 
   void DebuggerMessage(Vector<uint16_t> message);
   void Shutdown();