Move microtask queueing logic from JavaScript to C++

src/runtime.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdlib.h>
 #include <limits>
 
 #include "v8.h"
 
 #include "accessors.h"
@@ skipping 14860 matching lines @@
   RUNTIME_ASSERT(!obj->IsJSGlobalProxy());
   if (obj->IsJSProxy()) return isolate->heap()->undefined_value();
   RUNTIME_ASSERT(!obj->map()->is_observed());
 
   ASSERT(obj->IsJSObject());
   JSObject::SetObserved(Handle<JSObject>::cast(obj));
   return isolate->heap()->undefined_value();
 }
 
 
-RUNTIME_FUNCTION(Runtime_SetMicrotaskPending) {
-  SealHandleScope shs(isolate);
+RUNTIME_FUNCTION(Runtime_EnqueueMicrotask) {
+  HandleScope scope(isolate);
   ASSERT(args.length() == 1);
-  CONVERT_BOOLEAN_ARG_CHECKED(new_state, 0);
-  bool old_state = isolate->microtask_pending();
-  isolate->set_microtask_pending(new_state);
-  return isolate->heap()->ToBoolean(old_state);
+  CONVERT_ARG_HANDLE_CHECKED(JSFunction, microtask, 0);
+  isolate->EnqueueMicrotask(microtask);
+  return isolate->heap()->undefined_value();
 }
 
 
 RUNTIME_FUNCTION(Runtime_RunMicrotasks) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 0);
-  if (isolate->microtask_pending()) Execution::RunMicrotasks(isolate);
+  isolate->RunMicrotasks();
   return isolate->heap()->undefined_value();
 }
 
 
-RUNTIME_FUNCTION(Runtime_GetMicrotaskState) {
-  SealHandleScope shs(isolate);
-  ASSERT(args.length() == 0);
-  return isolate->heap()->microtask_state();
-}
-
-
 RUNTIME_FUNCTION(Runtime_GetObservationState) {
   SealHandleScope shs(isolate);
   ASSERT(args.length() == 0);
   return isolate->heap()->observation_state();
 }
 
 
 RUNTIME_FUNCTION(Runtime_ObservationWeakMapCreate) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 0);
@@ skipping 312 matching lines @@
   }
   return NULL;
 }
 
 
 const Runtime::Function* Runtime::FunctionForId(Runtime::FunctionId id) {
   return &(kIntrinsicFunctions[static_cast<int>(id)]);
 }
 
 } }  // namespace v8::internal