- Add a minimal implementation of Capability.

runtime/vm/isolate.cc

 // 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.
 
 #include "vm/isolate.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/json.h"
 #include "lib/mirrors.h"
@@ skipping 103 matching lines @@
 
 
 bool IsolateMessageHandler::HandleMessage(Message* message) {
   StartIsolateScope start_scope(isolate_);
   StackZone zone(isolate_);
   HandleScope handle_scope(isolate_);
   // TODO(turnidge): Rework collection total dart execution.  This can
   // overcount when other things (gc, compilation) are active.
   TIMERSCOPE(isolate_, time_dart_execution);
 
-  // If the message is in band we lookup the receive port to dispatch to.  If
-  // the receive port is closed, we drop the message without deserializing it.
-  Object& receive_port = Object::Handle();
+  // If the message is in band we lookup the handler to dispatch to.  If the
+  // receive port was closed, we drop the message without deserializing it.
+  Object& msg_handler = Object::Handle();
   if (!message->IsOOB()) {
-    receive_port = DartLibraryCalls::LookupReceivePort(message->dest_port());
-    if (receive_port.IsError()) {
+    msg_handler = DartLibraryCalls::LookupHandler(message->dest_port());
+    if (msg_handler.IsError()) {
       return ProcessUnhandledException(Object::null_instance(),
-                                       Error::Cast(receive_port));
+                                       Error::Cast(msg_handler));
     }
-    if (receive_port.IsNull()) {
+    if (msg_handler.IsNull()) {
       delete message;
       return true;
     }
   }
 
   // Parse the message.
   SnapshotReader reader(message->data(), message->len(),
                         Snapshot::kMessage, Isolate::Current());
   const Object& msg_obj = Object::Handle(reader.ReadObject());
   if (msg_obj.IsError()) {
@@ skipping 11 matching lines @@
   }
 
   Instance& msg = Instance::Handle();
   msg ^= msg_obj.raw();  // Can't use Instance::Cast because may be null.
 
   bool success = true;
   if (message->IsOOB()) {
     Service::HandleIsolateMessage(isolate_, msg);
   } else {
     const Object& result = Object::Handle(
-        DartLibraryCalls::HandleMessage(receive_port, msg));
+        DartLibraryCalls::HandleMessage(msg_handler, msg));
     if (result.IsError()) {
       success = ProcessUnhandledException(msg, Error::Cast(result));
     } else {
       ASSERT(result.IsNull());
     }
   }
   delete message;
   return success;
 }
 
@@ skipping 991 matching lines @@
   return func.raw();
 }
 
 
 void IsolateSpawnState::Cleanup() {
   SwitchIsolateScope switch_scope(isolate());
   Dart::ShutdownIsolate();
 }
 
 }  // namespace dart