Added API Dart_PostCMessage for posting a Dart_CMessage structure

runtime/bin/socket_impl.dart

Index: runtime/bin/socket_impl.dart
diff --git a/runtime/bin/socket_impl.dart b/runtime/bin/socket_impl.dart
index c698f98678c1400d68fad67bc88249d32282fc6b..6b5293601a2e964728fcfe31f2d85f7fe6207a87 100644
--- a/runtime/bin/socket_impl.dart
+++ b/runtime/bin/socket_impl.dart
@@ -42,10 +42,8 @@ class _SocketBase {
   }
 
   // Multiplexes socket events to the socket handlers.
-  void _multiplex(List<int> message) {
-    assert(message.length == 1);
+  void _multiplex(int event_mask) {

[siva, 2012/02/04 02:51:17]

Are you stating that we will only have to handle one event here and will not
have a need later to expand it to handle an array of events?

[Søren Gjesse, 2012/02/06 15:35:49]

Not necessarily. Previously we received an array but only ever looked at element
0. If we want to post several events from the eventhandler at some point we can
just change the message to become an array again.

     _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) {