duke@435: /*
xdono@1014:  * Copyright 1997-2009 Sun Microsystems, Inc.  All Rights Reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
duke@435:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435:  * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435:  * have any questions.
duke@435:  *
duke@435:  */
duke@435: 
duke@435: // A typeArrayKlass is the klass of a typeArray
duke@435: // It contains the type and size of the elements
duke@435: 
duke@435: class typeArrayKlass : public arrayKlass {
duke@435:   friend class VMStructs;
duke@435:  private:
duke@435:   jint _max_length;            // maximum number of elements allowed in an array
duke@435:  public:
duke@435:   // instance variables
duke@435:   jint max_length()                     { return _max_length; }
duke@435:   void set_max_length(jint m)           { _max_length = m;    }
duke@435: 
duke@435:   // testers
duke@435:   bool oop_is_typeArray_slow() const    { return true; }
duke@435: 
duke@435:   // klass allocation
duke@435:   DEFINE_ALLOCATE_PERMANENT(typeArrayKlass);
jcoomes@916:   static klassOop create_klass(BasicType type, int scale, const char* name_str,
jcoomes@916:                                TRAPS);
jcoomes@916:   static inline klassOop create_klass(BasicType type, int scale, TRAPS) {
jcoomes@916:     return create_klass(type, scale, external_name(type), CHECK_NULL);
jcoomes@916:   }
duke@435: 
duke@435:   int oop_size(oop obj) const;
duke@435:   int klass_oop_size() const  { return object_size(); }
duke@435: 
duke@435:   bool compute_is_subtype_of(klassOop k);
duke@435: 
duke@435:   // Allocation
duke@435:   typeArrayOop allocate(int length, TRAPS);
duke@435:   typeArrayOop allocate_permanent(int length, TRAPS);  // used for class file structures
duke@435:   oop multi_allocate(int rank, jint* sizes, TRAPS);
duke@435: 
duke@435:   // Copying
duke@435:   void  copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS);
duke@435: 
duke@435:   // Iteration
duke@435:   int oop_oop_iterate(oop obj, OopClosure* blk);
duke@435:   int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr);
duke@435: 
duke@435:   // Garbage collection
duke@435:   void oop_follow_contents(oop obj);
duke@435:   int  oop_adjust_pointers(oop obj);
duke@435: 
duke@435:   // Parallel Scavenge and Parallel Old
duke@435:   PARALLEL_GC_DECLS
duke@435: 
duke@435:  protected:
duke@435:   // Find n'th dimensional array
duke@435:   virtual klassOop array_klass_impl(bool or_null, int n, TRAPS);
duke@435: 
duke@435:   // Returns the array class with this class as element type
duke@435:   virtual klassOop array_klass_impl(bool or_null, TRAPS);
duke@435: 
duke@435:  public:
duke@435:   // Casting from klassOop
duke@435:   static typeArrayKlass* cast(klassOop k) {
duke@435:     assert(k->klass_part()->oop_is_typeArray_slow(), "cast to typeArrayKlass");
duke@435:     return (typeArrayKlass*) k->klass_part();
duke@435:   }
duke@435: 
duke@435:   // Naming
duke@435:   static const char* external_name(BasicType type);
duke@435: 
duke@435:   // Sizing
duke@435:   static int header_size()  { return oopDesc::header_size() + sizeof(typeArrayKlass)/HeapWordSize; }
duke@435:   int object_size() const   { return arrayKlass::object_size(header_size()); }
duke@435: 
duke@435:   // Initialization (virtual from Klass)
duke@435:   void initialize(TRAPS);
duke@435: 
duke@435:  private:
duke@435:    // Helpers
duke@435:    static klassOop array_klass_impl(typeArrayKlassHandle h_this, bool or_null, int n, TRAPS);
duke@435: 
duke@435: #ifndef PRODUCT
duke@435:  public:
duke@435:   // Printing
duke@435:   void oop_print_on(oop obj, outputStream* st);
duke@435: #endif
duke@435:  public:
duke@435:   const char* internal_name() const;
duke@435: };