Terminate event handler thread on isolate shutdown.

runtime/bin/eventhandler.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef BIN_EVENTHANDLER_H_
 #define BIN_EVENTHANDLER_H_
 
 #include "bin/builtin.h"
+#include "bin/isolate_data.h"
 
 // Flags used to provide information and actions to the eventhandler
 // when sending a message about a file descriptor. These flags should
 // be kept in sync with the constants in socket_impl.dart. For more
 // information see the comments in socket_impl.dart
 enum MessageFlags {
   kInEvent = 0,
   kOutEvent = 1,
   kErrorEvent = 2,
   kCloseEvent = 3,
@@ skipping 15 matching lines @@
 #else
 #error Unknown target os.
 #endif
 
 class EventHandler {
  public:
   void SendData(intptr_t id, Dart_Port dart_port, intptr_t data) {
     delegate_.SendData(id, dart_port, data);
   }
 
-  static EventHandler* StartEventHandler() {
+  void Shutdown() {
+    delegate_.Shutdown();
+  }
+
+  static EventHandler* Start() {
     EventHandler* handler = new EventHandler();
-    handler->delegate_.StartEventHandler();
+    handler->delegate_.Start();
+    IsolateData* isolate_data =
+        reinterpret_cast<IsolateData*>(Dart_CurrentIsolateData());
+    isolate_data->event_handler = handler;
     return handler;
   }
 
  private:
   EventHandlerImplementation delegate_;
 };
 
 
 #endif  // BIN_EVENTHANDLER_H_