Add Dart_PostPriority function to dart_api, and use it in runAsync to schedule immediate events in …

runtime/bin/dartutils.cc

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// 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 "bin/dartutils.h"
 
 #include "include/dart_api.h"
 #include "include/dart_native_api.h"
 
 #include "platform/assert.h"
 #include "platform/globals.h"
@@ skipping 664 matching lines @@
   Dart_Handle async_lib = Dart_LookupLibrary(url);
   DART_CHECK_VALID(async_lib);
   Dart_Handle io_lib = Builtin::LoadAndCheckLibrary(Builtin::kIOLibrary);
   Dart_Handle timer_closure =
       Dart_Invoke(io_lib, NewString("_getTimerFactoryClosure"), 0, NULL);
   Dart_Handle args[1];
   args[0] = timer_closure;
   DART_CHECK_VALID(Dart_Invoke(
       async_lib, NewString("_setTimerFactoryClosure"), 1, args));
 
+  Dart_Handle enqueue_immediate_closure =
+      Dart_Invoke(io_lib,
+                  NewString("_getEnqueueImmediateFactoryClosure"),
+                  0,
+                  NULL);
+  args[0] = enqueue_immediate_closure;
+  DART_CHECK_VALID(Dart_Invoke(
+      async_lib, NewString("_setEnqueueImmediateFactoryClosure"), 1, args));
+
   // Setup the corelib 'Uri.base' getter.
   Dart_Handle uri_base = Dart_Invoke(
       builtin_lib, NewString("_getUriBaseClosure"), 0, NULL);
   DART_CHECK_VALID(uri_base);
   result = Dart_SetField(corelib,
                          NewString("_uriBaseClosure"),
                          uri_base);
   DART_CHECK_VALID(result);
 
   if (IsWindowsHost()) {
@@ skipping 327 matching lines @@
       new CObjectString(CObject::NewString(os_error->message()));
   CObjectArray* result = new CObjectArray(CObject::NewArray(3));
   result->SetAt(0, new CObjectInt32(CObject::NewInt32(kOSError)));
   result->SetAt(1, new CObjectInt32(CObject::NewInt32(os_error->code())));
   result->SetAt(2, error_message);
   return result;
 }
 
 }  // namespace bin
 }  // namespace dart