src/hotspot/share/oops/klass.hpp

klass is_unloading no cache v3

 
   virtual void metaspace_pointers_do(MetaspaceClosure* iter);
   virtual MetaspaceObj::Type type() const { return ClassType; }
 
   // Iff the class loader (or mirror for unsafe anonymous classes) is alive the
-  // Klass is considered alive.  Has already been marked as unloading.
+  // Klass is considered alive. This is safe to call before the CLD is marked as
+  // unloading, and hence during concurrent class unloading.
   bool is_loader_alive() const { return class_loader_data()->is_alive(); }
 
   // Load the klass's holder as a phantom. This is useful when a weak Klass
   // pointer has been "peeked" and then must be kept alive before it may
   // be used safely.