- Remove Dart_ReceivePortGetId, Dart_GetReceivePort and Dart_PostMessage.

sdk/lib/io/timer_impl.dart

 // Copyright (c) 2013, 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.
 
 part of dart.io;
 
 // Timer heap implemented as a array-based binary heap[0].
 // This allows for O(1) `first`, O(log(n)) `remove`/`removeFirst` and O(log(n))
 // `add`.
 //
@@ skipping 217 matching lines @@
       // While we are already handling callbacks we will not notify the event
       // handler. _handleTimeout will call _notifyEventHandler once all pending
       // timers are processed.
       return;
     }
 
     if (_firstZeroTimer == null && _heap.isEmpty) {
       // No pending timers: Close the receive port and let the event handler
       // know.
       if (_receivePort != null) {
-        _EventHandler._sendData(null, _receivePort, _NO_TIMER);
+        _EventHandler._sendData(null, _sendPort, _NO_TIMER);
         _shutdownTimerHandler();
       }
     } else {
       if (_receivePort == null) {
         // Create a receive port and register a message handler for the timer
         // events.
         _createTimerHandler();
       }
       if (_firstZeroTimer != null) {
         _sendPort.send(null);
       } else {
         _EventHandler._sendData(null,
-                                _receivePort,
+                                _sendPort,
                                 _heap.first._wakeupTime);
       }
     }
   }
 
   static void _handleTimeout(_) {
     int currentTime = new DateTime.now().millisecondsSinceEpoch;
     // Collect all pending timers.
     var timer = _firstZeroTimer;
     var nextTimer = _lastZeroTimer;
@@ skipping 47 matching lines @@
   static void _createTimerHandler() {
     if(_receivePort == null) {
       _receivePort = new RawReceivePort(_handleTimeout);
       _sendPort = _receivePort.sendPort;
     }
   }
 
   static void _shutdownTimerHandler() {
     _receivePort.close();
     _receivePort = null;
+    _sendPort = null;
   }
 }
 
 // Provide a closure which will allocate a Timer object to be able to hook
 // up the Timer interface in dart:isolate with the implementation here.
 _getTimerFactoryClosure() {
   return (int milliSeconds, void callback(Timer timer), bool repeating) {
     if (repeating) {
       return new _Timer.periodic(milliSeconds, callback);
     }
     return new _Timer(milliSeconds, callback);
   };
 }