/*

 * Copyright (c) 1997, 2017, 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.

 *

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 */

#ifndef SHARE_VM_OOPS_TYPEARRAYKLASS_HPP

#define SHARE_VM_OOPS_TYPEARRAYKLASS_HPP

#include "classfile/classLoaderData.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

  // Constructor

  TypeArrayKlass(BasicType type, Symbol* name);

  static TypeArrayKlass* allocate(ClassLoaderData* loader_data, BasicType type, Symbol* name, TRAPS);

 public:

  TypeArrayKlass() {} // For dummy objects.

  // instance variables

  jint max_length()                     { return _max_length; }

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

  // testers

  DEBUG_ONLY(bool is_typeArray_klass_slow() const  { return true; })

  // klass allocation

  static TypeArrayKlass* create_klass(BasicType type, const char* name_str,

                               TRAPS);

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

    TypeArrayKlass* tak = create_klass(type, external_name(type), CHECK_NULL);

    assert(scale == (1 << tak->log2_element_size()), "scale must check out");

    return tak;

  }

  int oop_size(oop obj) const;

  bool compute_is_subtype_of(Klass* k);

  // Allocation

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

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

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

  oop protection_domain() const { return NULL; }

  // Copying

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

  // GC specific object visitors

  //

#if INCLUDE_PARALLELGC

  // Parallel Scavenge

  void oop_ps_push_contents(  oop obj, PSPromotionManager* pm);

  // Parallel Compact

  void oop_pc_follow_contents(oop obj, ParCompactionManager* cm);

  void oop_pc_update_pointers(oop obj, ParCompactionManager* cm);

#endif

  // Oop iterators. Since there are no oops in TypeArrayKlasses,

  // these functions only return the size of the object.

 private:

  // The implementation used by all oop_oop_iterate functions in TypeArrayKlasses.

  // Wraps oop_oop_iterate_impl to conform to macros.

  inline void oop_oop_iterate(oop obj, OopClosureType* closure);

  // Wraps oop_oop_iterate_impl to conform to macros.

  inline void oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr);

 protected:

  // Find n'th dimensional array

  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:

  static TypeArrayKlass* cast(Klass* k) {

    return const_cast<TypeArrayKlass*>(cast(const_cast<const Klass*>(k)));

  }

  static const TypeArrayKlass* cast(const Klass* k) {

    assert(k->is_typeArray_klass(), "cast to TypeArrayKlass");

    return static_cast<const TypeArrayKlass*>(k);

  }

  // Naming

  static const char* external_name(BasicType type);

  // Sizing

  static int header_size()  { return sizeof(TypeArrayKlass)/wordSize; }

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

  // Initialization (virtual from Klass)

  void initialize(TRAPS);

 public:

  // Printing

#ifndef PRODUCT

  void oop_print_on(oop obj, outputStream* st);

#endif

  void print_on(outputStream* st) const;

  void print_value_on(outputStream* st) const;

 public:

  const char* internal_name() const;

  ModuleEntry* module() const;

  PackageEntry* package() const;

};

#endif // SHARE_VM_OOPS_TYPEARRAYKLASS_HPP