| Index: src/api.cc | 
| diff --git a/src/api.cc b/src/api.cc | 
| index ad5ef262456f76a4e9c213e5fdd4d177c3b15919..a781d9ebbcb2d37ff2a4b3b1631fee52307e577f 100644 | 
| --- a/src/api.cc | 
| +++ b/src/api.cc | 
| @@ -7835,6 +7835,12 @@ void Isolate::VisitExternalResources(ExternalResourceVisitor* visitor) { | 
| } | 
|  | 
|  | 
| +bool Isolate::IsInUse() { | 
| +  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this); | 
| +  return isolate->IsInUse(); | 
| +} | 
| + | 
| + | 
| class VisitorAdapter : public i::ObjectVisitor { | 
| public: | 
| explicit VisitorAdapter(PersistentHandleVisitor* visitor) | 
|  |