Harmony promises

src/v8natives.js

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1819 matching lines @@
   %SetCode($Function, FunctionConstructor);
   %SetProperty($Function.prototype, "constructor", $Function, DONT_ENUM);
 
   InstallFunctions($Function.prototype, DONT_ENUM, $Array(
     "bind", FunctionBind,
     "toString", FunctionToString
   ));
 }
 
 SetUpFunction();
+
+
+//----------------------------------------------------------------------------
+
+// TODO(rossberg): very simple abstraction for generic microtask queue.
+// Eventually, we should move to a real event queue that allows to maintain
+// relative ordering of different kinds of tasks.
+
+RunMicrotasks.runners = new InternalArray;
+
+function RunMicrotasks() {
+  while (%SetMicrotasksPending(false)) {
+    for (var i in RunMicrotasks.runners) RunMicrotasks.runners[i]();
+  }
+}