1 /*
   2  * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 // The objArrayKlassKlass is klass for all objArrayKlass'
  26 
  27 class objArrayKlassKlass : public arrayKlassKlass {
  28  public:
  29   // Testing
  30   virtual bool oop_is_objArrayKlass() const { return true; }
  31 
  32   // Dispatched operation
  33   int oop_size(oop obj) const { return objArrayKlass::cast(klassOop(obj))->object_size(); }
  34   int klass_oop_size() const  { return object_size(); }
  35 
  36   // Allocation
  37   DEFINE_ALLOCATE_PERMANENT(objArrayKlassKlass);
  38   static klassOop create_klass(TRAPS);
  39   klassOop allocate_objArray_klass(int n, KlassHandle element_klass, TRAPS);
  40   klassOop allocate_system_objArray_klass(TRAPS); // Used for bootstrapping in Universe::genesis
  41 
  42   // Casting from klassOop
  43   static objArrayKlassKlass* cast(klassOop k) {
  44     assert(k->klass_part()->oop_is_klass(), "cast to objArrayKlassKlass");
  45     return (objArrayKlassKlass*) k->klass_part();
  46   }
  47 
  48   // Sizing
  49   static int header_size()  { return oopDesc::header_size() + sizeof(objArrayKlassKlass)/HeapWordSize; }
  50   int object_size() const   { return align_object_size(header_size()); }
  51 
  52   // Garbage collection
  53   void oop_follow_contents(oop obj);
  54   int oop_adjust_pointers(oop obj);
  55 
  56   // Parallel Scavenge and Parallel Old
  57   PARALLEL_GC_DECLS
  58 
  59   // Iterators
  60   int oop_oop_iterate(oop obj, OopClosure* blk);
  61   int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr);
  62 
  63  private:
  64   // helpers
  65   static klassOop allocate_objArray_klass_impl(objArrayKlassKlassHandle this_oop, int n, KlassHandle element_klass, TRAPS);
  66 
  67  public:
  68   // Printing
  69   void oop_print_value_on(oop obj, outputStream* st);
  70 #ifndef PRODUCT
  71   void oop_print_on(oop obj, outputStream* st);
  72 #endif //PRODUCT
  73 
  74   // Verification
  75   const char* internal_name() const;
  76   void oop_verify_on(oop obj, outputStream* st);
  77 
  78 };