326   int dim = dimension();

   326   int dim = dimension();

   327   if (dim == n) return this;

   327   if (dim == n) return this;

   328 

   328 

   329   // lock-free read needs acquire semantics

   329   // lock-free read needs acquire semantics

   330   if (higher_dimension_acquire() == NULL) {

   330   if (higher_dimension_acquire() == NULL) {

   332 

   332 

   333     ResourceMark rm;

   333     ResourceMark rm;

   334     JavaThread *jt = (JavaThread *)THREAD;

   334     JavaThread *jt = (JavaThread *)THREAD;

   335     {

   335     {

   336       // Ensure atomic creation of higher dimensions

   336       // Ensure atomic creation of higher dimensions

   347         // use 'release' to pair with lock-free load

   347         // use 'release' to pair with lock-free load

   348         release_set_higher_dimension(ak);

   348         release_set_higher_dimension(ak);

   349         assert(ak->is_objArray_klass(), "incorrect initialization of ObjArrayKlass");

   349         assert(ak->is_objArray_klass(), "incorrect initialization of ObjArrayKlass");

   350       }

   350       }

   351     }

   351     }

   354   }

   352   }

   355 

   353 

   356   ObjArrayKlass *ak = ObjArrayKlass::cast(higher_dimension());

   354   ObjArrayKlass *ak = ObjArrayKlass::cast(higher_dimension());

   357   if (or_null) {

   355   if (or_null) {

   358     return ak->array_klass_or_null(n);

   356     return ak->array_klass_or_null(n);

   359   }

   357   }

   360   return ak->array_klass(n, THREAD);

   359   return ak->array_klass(n, THREAD);

   361 }

   360 }

   362 

   361 

   363 Klass* ObjArrayKlass::array_klass_impl(bool or_null, TRAPS) {

   362 Klass* ObjArrayKlass::array_klass_impl(bool or_null, TRAPS) {

   364   return array_klass_impl(or_null, dimension() +  1, THREAD);

   363   return array_klass_impl(or_null, dimension() +  1, THREAD);