[api] Introduce MicrotasksScope::IsRunningMicrotasks

src/isolate.h

 // 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.
 
 #ifndef V8_ISOLATE_H_
 #define V8_ISOLATE_H_
 
 #include <queue>
 #include <set>
 
@@ skipping 1046 matching lines @@
   void AddMicrotasksCompletedCallback(MicrotasksCompletedCallback callback);
   void RemoveMicrotasksCompletedCallback(MicrotasksCompletedCallback callback);
   void FireMicrotasksCompletedCallback();
 
   void SetPromiseRejectCallback(PromiseRejectCallback callback);
   void ReportPromiseReject(Handle<JSObject> promise, Handle<Object> value,
                            v8::PromiseRejectEvent event);
 
   void EnqueueMicrotask(Handle<Object> microtask);
   void RunMicrotasks();
+  bool IsRunningMicrotasks() const { return is_running_microtasks_; }
 
   void SetUseCounterCallback(v8::Isolate::UseCounterCallback callback);
   void CountUsage(v8::Isolate::UseCounterFeature feature);
 
   BasicBlockProfiler* GetOrCreateBasicBlockProfiler();
   BasicBlockProfiler* basic_block_profiler() { return basic_block_profiler_; }
 
   std::string GetTurboCfgFileName();
 
 #if TRACE_MAPS
@@ skipping 259 matching lines @@
 #endif
 
   // List of callbacks before a Call starts execution.
   List<BeforeCallEnteredCallback> before_call_entered_callbacks_;
 
   // List of callbacks when a Call completes.
   List<CallCompletedCallback> call_completed_callbacks_;
 
   // List of callbacks after microtasks were run.
   List<MicrotasksCompletedCallback> microtasks_completed_callbacks_;
+  bool is_running_microtasks_;
 
   v8::Isolate::UseCounterCallback use_counter_callback_;
   BasicBlockProfiler* basic_block_profiler_;
 
   List<Object*> partial_snapshot_cache_;
 
   v8::ArrayBuffer::Allocator* array_buffer_allocator_;
 
   FutexWaitListNode futex_wait_list_node_;
 
@@ skipping 224 matching lines @@
 
   EmbeddedVector<char, 128> filename_;
   FILE* file_;
   int scope_depth_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_ISOLATE_H_