Added API Dart_PostCMessage for posting a Dart_CMessage structure

runtime/bin/socket_impl.dart

 // 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.
 
 
 class _SocketBase {
   // Bit flags used when communicating between the eventhandler and
   // dart code. The EVENT flags are used to indicate events of
   // interest when sending a message from dart code to the
   // eventhandler. When receiving a message from the eventhandler the
@@ skipping 24 matching lines @@
 
   _SocketBase () {
     _handlerMap = new List(_LAST_EVENT + 1);
     _handlerMask = 0;
     _canActivateHandlers = true;
     _id = -1;
     _EventHandler._start();
   }
 
   // Multiplexes socket events to the socket handlers.
-  void _multiplex(List<int> message) {
-    assert(message.length == 1);
+  void _multiplex(int event_mask) {
     _canActivateHandlers = false;
-    int event_mask = message[0];
     for (int i = _FIRST_EVENT; i <= _LAST_EVENT; i++) {
       if (((event_mask & (1 << i)) != 0)) {
         if ((i == _CLOSE_EVENT) && this is _Socket && _id >= 0) {
           _closedRead = true;
           if (_closedWrite) _close();
         }
 
         var eventHandler = _handlerMap[i];
         if (eventHandler != null) {
           // Unregister the out handler before executing it.
@@ skipping 401 matching lines @@
   bool _seenFirstOutEvent = false;
   bool _closedRead = false;
   bool _closedWrite = false;
   bool _pipe = false;
   Function _clientConnectHandler;
   Function _clientWriteHandler;
   SocketInputStream _inputStream;
   SocketOutputStream _outputStream;
 }