Add a general mechanism to wait on the debugger for Broadcasters of a given class/event bit set.
Use this to allow the lldb Driver to emit notifications for breakpoint modifications.
<rdar://problem/10619974>

llvm-svn: 150665
diff --git a/lldb/source/Core/Communication.cpp b/lldb/source/Core/Communication.cpp
index 45850f3..35af644 100644
--- a/lldb/source/Core/Communication.cpp
+++ b/lldb/source/Core/Communication.cpp
@@ -23,11 +23,18 @@
 using namespace lldb;
 using namespace lldb_private;
 
+ConstString &
+Communication::GetStaticBroadcasterClass ()
+{
+    static ConstString class_name ("lldb.communication");
+    return class_name;
+}
+
 //----------------------------------------------------------------------
 // Constructor
 //----------------------------------------------------------------------
 Communication::Communication(const char *name) :
-    Broadcaster (name),
+    Broadcaster (NULL, name),
     m_connection_sp (),
     m_read_thread (LLDB_INVALID_HOST_THREAD),
     m_read_thread_enabled (false),
@@ -48,6 +55,8 @@
     SetEventName (eBroadcastBitReadThreadDidExit, "read thread did exit");
     SetEventName (eBroadcastBitReadThreadShouldExit, "read thread should exit");
     SetEventName (eBroadcastBitPacketAvailable, "packet available");
+    
+    CheckInWithManager();
 }
 
 //----------------------------------------------------------------------