/*

 * 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

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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(int length, TRAPS);

  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