src/hotspot/share/classfile/dictionary.cpp

Concurrent class unloading

*** 246,256 ****
    }
  }
  
  
  void Dictionary::do_unloading() {
!   assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
  
    // The NULL class loader doesn't initiate loading classes from other class loaders
    if (loader_data() == ClassLoaderData::the_null_class_loader_data()) {
      return;
    }
--- 246,257 ----
    }
  }
  
  
  void Dictionary::do_unloading() {
!   MutexLockerEx m(SystemDictionary_lock);
!   assert(UseZGC || SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
  
    // The NULL class loader doesn't initiate loading classes from other class loaders
    if (loader_data() == ClassLoaderData::the_null_class_loader_data()) {
      return;
    }