V8 Microtask Queue & API

src/execution.cc

Index: src/execution.cc
diff --git a/src/execution.cc b/src/execution.cc
index da2d880a4941ee88a8521530b5223dda3a1be395..6315307585126120c866dd3465e226d328b85672 100644
--- a/src/execution.cc
+++ b/src/execution.cc
@@ -368,6 +368,22 @@ void Execution::RunMicrotasks(Isolate* isolate) {
 }
 
 
+void Execution::EnqueueExternalMicrotask(Isolate* isolate,
+                                         v8::MicrotaskCallback callback) {
+  bool threw = false;
+  Handle<Object> handler = v8::FromCData(isolate, callback);
+  Handle<Object> args[] = { handler };
+  Execution::Call(
+      isolate,
+      isolate->enqueue_external_microtask(),
+      isolate->factory()->undefined_value(),
+      1,
+      args,
+      &threw);
+  ASSERT(!threw);
+}
+
+
 bool StackGuard::IsStackOverflow() {
   ExecutionAccess access(isolate_);
   return (thread_local_.jslimit_ != kInterruptLimit &&