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 /*

  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.

  * 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

  * or visit www.oracle.com if you need additional information or have any

  * questions.

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  */

 #ifndef SHARE_VM_OOPS_TYPEARRAYKLASS_HPP

 #define SHARE_VM_OOPS_TYPEARRAYKLASS_HPP

 #include "oops/arrayKlass.hpp"

 // A typeArrayKlass is the klass of a typeArray

 // It contains the type and size of the elements

 class typeArrayKlass : public arrayKlass {

   friend class VMStructs;

  private:

   jint _max_length;            // maximum number of elements allowed in an array

  public:

   // instance variables

   jint max_length()                     { return _max_length; }

   void set_max_length(jint m)           { _max_length = m;    }

   // testers

   bool oop_is_typeArray_slow() const    { return true; }

   // klass allocation

   DEFINE_ALLOCATE_PERMANENT(typeArrayKlass);

   static klassOop create_klass(BasicType type, int scale, const char* name_str,

                                TRAPS);

   static inline klassOop create_klass(BasicType type, int scale, TRAPS) {

     return create_klass(type, scale, external_name(type), CHECK_NULL);

   }

   int oop_size(oop obj) const;

   int klass_oop_size() const  { return object_size(); }

   bool compute_is_subtype_of(klassOop k);

   // Allocation

   typeArrayOop allocate_common(int length, bool do_zero, TRAPS);

   typeArrayOop allocate(int length, TRAPS) { return allocate_common(length, true, THREAD); }

   typeArrayOop allocate_permanent(int length, TRAPS);  // used for class file structures

   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);

   // Iteration

   int oop_oop_iterate(oop obj, OopClosure* blk);

   int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr);

   // Garbage collection

   void oop_follow_contents(oop obj);

   int  oop_adjust_pointers(oop obj);

   // Parallel Scavenge and Parallel Old

   PARALLEL_GC_DECLS

  protected:

   // Find n'th dimensional array

   virtual klassOop array_klass_impl(bool or_null, int n, TRAPS);

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

   virtual klassOop array_klass_impl(bool or_null, TRAPS);

  public:

   // Casting from klassOop

   static typeArrayKlass* cast(klassOop k) {

     assert(k->klass_part()->oop_is_typeArray_slow(), "cast to typeArrayKlass");

     return (typeArrayKlass*) k->klass_part();

   }

   // Naming

   static const char* external_name(BasicType type);

   // Sizing

   static int header_size()  { return oopDesc::header_size() + sizeof(typeArrayKlass)/HeapWordSize; }

   int object_size() const   { return arrayKlass::object_size(header_size()); }

   // Initialization (virtual from Klass)

   void initialize(TRAPS);

  private:

    // Helpers

    static klassOop array_klass_impl(typeArrayKlassHandle h_this, bool or_null, int n, TRAPS);

 #ifndef PRODUCT

  public:

   // Printing

   void oop_print_on(oop obj, outputStream* st);

 #endif

  public:

   const char* internal_name() const;

 };

 #endif // SHARE_VM_OOPS_TYPEARRAYKLASS_HPP