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 /*

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  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 #ifndef SHARE_VM_OOPS_OBJARRAYKLASS_HPP

 #define SHARE_VM_OOPS_OBJARRAYKLASS_HPP

 #include "classfile/classLoaderData.hpp"

 #include "memory/specialized_oop_closures.hpp"

 #include "oops/arrayKlass.hpp"

 #include "utilities/macros.hpp"

 // ObjArrayKlass is the klass for objArrays

 class ObjArrayKlass : public ArrayKlass {

   friend class VMStructs;

  private:

   Klass* _element_klass;            // The klass of the elements of this array type

   Klass* _bottom_klass;             // The one-dimensional type (InstanceKlass or TypeArrayKlass)

   // Constructor

   ObjArrayKlass(int n, KlassHandle element_klass, Symbol* name);

   static ObjArrayKlass* allocate(ClassLoaderData* loader_data, int n, KlassHandle klass_handle, Symbol* name, TRAPS);

  public:

   // For dummy objects

   ObjArrayKlass() {}

   // Instance variables

   Klass* element_klass() const      { return _element_klass; }

   void set_element_klass(Klass* k)  { _element_klass = k; }

   Klass** element_klass_addr()      { return &_element_klass; }

   Klass* bottom_klass() const       { return _bottom_klass; }

   void set_bottom_klass(Klass* k)   { _bottom_klass = k; }

   Klass** bottom_klass_addr()       { return &_bottom_klass; }

   // Compiler/Interpreter offset

   static ByteSize element_klass_offset() { return in_ByteSize(offset_of(ObjArrayKlass, _element_klass)); }

   // Dispatched operation

   bool can_be_primary_super_slow() const;

   GrowableArray<Klass*>* compute_secondary_supers(int num_extra_slots);

   bool compute_is_subtype_of(Klass* k);

   bool oop_is_objArray_slow()  const  { return true; }

   int oop_size(oop obj) const;

   // Allocation

   static Klass* allocate_objArray_klass(ClassLoaderData* loader_data,

                                           int n, KlassHandle element_klass, TRAPS);

   objArrayOop allocate(int length, TRAPS);

   oop multi_allocate(int rank, jint* sizes, TRAPS);

   // Copying

   void  copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS);

   // Compute protection domain

   oop protection_domain() { return bottom_klass()->protection_domain(); }

  private:

   // Either oop or narrowOop depending on UseCompressedOops.

   // must be called from within ObjArrayKlass.cpp

   template <class T> void do_copy(arrayOop s, T* src, arrayOop d,

                                   T* dst, int length, TRAPS);

  protected:

   // Returns the ObjArrayKlass for n'th dimension.

   virtual Klass* array_klass_impl(bool or_null, int n, TRAPS);

   // Returns the array class with this class as element type.

   virtual Klass* array_klass_impl(bool or_null, TRAPS);

  public:

   // Casting from Klass*

   static ObjArrayKlass* cast(Klass* k) {

     assert(k->oop_is_objArray(), "cast to ObjArrayKlass");

     return (ObjArrayKlass*) k;

   }

   // Sizing

   static int header_size()                { return sizeof(ObjArrayKlass)/HeapWordSize; }

   int size() const                        { return ArrayKlass::static_size(header_size()); }

   // Initialization (virtual from Klass)

   void initialize(TRAPS);

   // Garbage collection

   void oop_follow_contents(oop obj);

   inline void oop_follow_contents(oop obj, int index);

   template <class T> inline void objarray_follow_contents(oop obj, int index);

   int  oop_adjust_pointers(oop obj);

   // Parallel Scavenge and Parallel Old

   PARALLEL_GC_DECLS

 #if INCLUDE_ALL_GCS

   inline void oop_follow_contents(ParCompactionManager* cm, oop obj, int index);

   template <class T> inline void

     objarray_follow_contents(ParCompactionManager* cm, oop obj, int index);

 #endif // INCLUDE_ALL_GCS

   // Iterators

   int oop_oop_iterate(oop obj, ExtendedOopClosure* blk) {

     return oop_oop_iterate_v(obj, blk);

   }

   int oop_oop_iterate_m(oop obj, ExtendedOopClosure* blk, MemRegion mr) {

     return oop_oop_iterate_v_m(obj, blk, mr);

   }

 #define ObjArrayKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix)   \

   int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk);         \

   int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk,      \

                                      MemRegion mr);                     \

   int oop_oop_iterate_range##nv_suffix(oop obj, OopClosureType* blk,    \

                                      int start, int end);

   ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DECL)

   ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayKlass_OOP_OOP_ITERATE_DECL)

   // JVM support

   jint compute_modifier_flags(TRAPS) const;

  public:

   // Printing

   void print_on(outputStream* st) const;

   void print_value_on(outputStream* st) const;

   void oop_print_value_on(oop obj, outputStream* st);

 #ifndef PRODUCT

   void oop_print_on      (oop obj, outputStream* st);

 #endif //PRODUCT

   const char* internal_name() const;

   // Verification

   void verify_on(outputStream* st);

   void oop_verify_on(oop obj, outputStream* st);

 };

 #endif // SHARE_VM_OOPS_OBJARRAYKLASS_HPP