rev 12851 : 8138737: Remove oop_ms_adjust_pointers and use oop_iterate instead
Reviewed-by:
rev 12852 : [mq]: 8138737-remove-oop-ms-adjust-kbarrett-rev1

   1 /*
   2  * Copyright (c) 1997, 2017, 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 #ifndef SHARE_VM_OOPS_TYPEARRAYKLASS_HPP
  26 #define SHARE_VM_OOPS_TYPEARRAYKLASS_HPP
  27 
  28 #include "classfile/classLoaderData.hpp"
  29 #include "oops/arrayKlass.hpp"
  30 
  31 // A TypeArrayKlass is the klass of a typeArray
  32 // It contains the type and size of the elements
  33 
  34 class TypeArrayKlass : public ArrayKlass {
  35   friend class VMStructs;
  36  private:
  37   jint _max_length;            // maximum number of elements allowed in an array
  38 
  39   // Constructor
  40   TypeArrayKlass(BasicType type, Symbol* name);
  41   static TypeArrayKlass* allocate(ClassLoaderData* loader_data, BasicType type, Symbol* name, TRAPS);
  42  public:
  43   TypeArrayKlass() {} // For dummy objects.
  44 
  45   // instance variables
  46   jint max_length()                     { return _max_length; }
  47   void set_max_length(jint m)           { _max_length = m;    }
  48 
  49   // testers
  50   DEBUG_ONLY(bool is_typeArray_klass_slow() const  { return true; })
  51 
  52   // klass allocation
  53   static TypeArrayKlass* create_klass(BasicType type, const char* name_str,
  54                                TRAPS);
  55   static inline Klass* create_klass(BasicType type, int scale, TRAPS) {
  56     TypeArrayKlass* tak = create_klass(type, external_name(type), CHECK_NULL);
  57     assert(scale == (1 << tak->log2_element_size()), "scale must check out");
  58     return tak;
  59   }
  60 
  61   int oop_size(oop obj) const;
  62 
  63   bool compute_is_subtype_of(Klass* k);
  64 
  65   // Allocation
  66   typeArrayOop allocate_common(int length, bool do_zero, TRAPS);
  67   typeArrayOop allocate(int length, TRAPS) { return allocate_common(length, true, THREAD); }
  68   oop multi_allocate(int rank, jint* sizes, TRAPS);
  69 
  70   oop protection_domain() const { return NULL; }
  71 
  72   // Copying
  73   void  copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS);
  74 
  75   // GC specific object visitors
  76   //


  77 #if INCLUDE_ALL_GCS
  78   // Parallel Scavenge
  79   void oop_ps_push_contents(  oop obj, PSPromotionManager* pm);
  80   // Parallel Compact
  81   void oop_pc_follow_contents(oop obj, ParCompactionManager* cm);
  82   void oop_pc_update_pointers(oop obj, ParCompactionManager* cm);
  83 #endif
  84 
  85   // Oop iterators. Since there are no oops in TypeArrayKlasses,
  86   // these functions only return the size of the object.
  87 
  88  private:
  89   // The implementation used by all oop_oop_iterate functions in TypeArrayKlasses.
  90   inline void oop_oop_iterate_impl(oop obj, ExtendedOopClosure* closure);
  91 
  92   // Wraps oop_oop_iterate_impl to conform to macros.
  93   template <bool nv, typename OopClosureType>
  94   inline void oop_oop_iterate(oop obj, OopClosureType* closure);
  95 
  96   // Wraps oop_oop_iterate_impl to conform to macros.
  97   template <bool nv, typename OopClosureType>
  98   inline void oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr);
  99 
 100  public:
 101 
 102   ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_OOP_ITERATE_DECL)
 103   ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_OOP_ITERATE_DECL)
 104   ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_OOP_ITERATE_DECL_RANGE)
 105   ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_OOP_ITERATE_DECL_RANGE)
 106 
 107 #if INCLUDE_ALL_GCS
 108   ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_OOP_ITERATE_DECL_NO_BACKWARDS)
 109   ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_OOP_ITERATE_DECL_NO_BACKWARDS)
 110 #endif // INCLUDE_ALL_GCS
 111 
 112 
 113  protected:
 114   // Find n'th dimensional array
 115   virtual Klass* array_klass_impl(bool or_null, int n, TRAPS);
 116 
 117   // Returns the array class with this class as element type
 118   virtual Klass* array_klass_impl(bool or_null, TRAPS);
 119 
 120  public:
 121   static TypeArrayKlass* cast(Klass* k) {
 122     return const_cast<TypeArrayKlass*>(cast(const_cast<const Klass*>(k)));
 123   }
 124 
 125   static const TypeArrayKlass* cast(const Klass* k) {
 126     assert(k->is_typeArray_klass(), "cast to TypeArrayKlass");
 127     return static_cast<const TypeArrayKlass*>(k);
 128   }
 129 
 130   // Naming
 131   static const char* external_name(BasicType type);
 132 
 133   // Sizing
 134   static int header_size()  { return sizeof(TypeArrayKlass)/wordSize; }
 135   int size() const          { return ArrayKlass::static_size(header_size()); }
 136 
 137   // Initialization (virtual from Klass)
 138   void initialize(TRAPS);
 139 
 140  public:
 141   // Printing
 142 #ifndef PRODUCT
 143   void oop_print_on(oop obj, outputStream* st);
 144 #endif
 145 
 146   void print_on(outputStream* st) const;
 147   void print_value_on(outputStream* st) const;
 148 
 149  public:
 150   const char* internal_name() const;
 151 
 152   ModuleEntry* module() const;
 153   PackageEntry* package() const;
 154 };
 155 
 156 #endif // SHARE_VM_OOPS_TYPEARRAYKLASS_HPP
--- EOF ---