Mon, 12 Nov 2012 16:15:05 -0500
8001471: Klass::cast() does nothing
Summary: Remove function Klass::cast() and calls to it.
Reviewed-by: dholmes, coleenp
1 /*
2 * Copyright (c) 1997, 2012, 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.
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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23 */
25 #ifndef SHARE_VM_OOPS_OBJARRAYKLASS_HPP
26 #define SHARE_VM_OOPS_OBJARRAYKLASS_HPP
28 #include "classfile/classLoaderData.hpp"
29 #include "memory/specialized_oop_closures.hpp"
30 #include "oops/arrayKlass.hpp"
32 // ObjArrayKlass is the klass for objArrays
34 class ObjArrayKlass : public ArrayKlass {
35 friend class VMStructs;
36 private:
37 Klass* _element_klass; // The klass of the elements of this array type
38 Klass* _bottom_klass; // The one-dimensional type (InstanceKlass or TypeArrayKlass)
40 // Constructor
41 ObjArrayKlass(int n, KlassHandle element_klass, Symbol* name);
42 static ObjArrayKlass* allocate(ClassLoaderData* loader_data, int n, KlassHandle klass_handle, Symbol* name, TRAPS);
43 public:
44 // For dummy objects
45 ObjArrayKlass() {}
47 // Instance variables
48 Klass* element_klass() const { return _element_klass; }
49 void set_element_klass(Klass* k) { _element_klass = k; }
50 Klass** element_klass_addr() { return &_element_klass; }
52 Klass* bottom_klass() const { return _bottom_klass; }
53 void set_bottom_klass(Klass* k) { _bottom_klass = k; }
54 Klass** bottom_klass_addr() { return &_bottom_klass; }
56 // Compiler/Interpreter offset
57 static ByteSize element_klass_offset() { return in_ByteSize(offset_of(ObjArrayKlass, _element_klass)); }
59 // Dispatched operation
60 bool can_be_primary_super_slow() const;
61 GrowableArray<Klass*>* compute_secondary_supers(int num_extra_slots);
62 bool compute_is_subtype_of(Klass* k);
63 bool oop_is_objArray_slow() const { return true; }
64 int oop_size(oop obj) const;
66 // Allocation
67 static Klass* allocate_objArray_klass(ClassLoaderData* loader_data,
68 int n, KlassHandle element_klass, TRAPS);
70 objArrayOop allocate(int length, TRAPS);
71 oop multi_allocate(int rank, jint* sizes, TRAPS);
73 // Copying
74 void copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS);
76 // Compute protection domain
77 oop protection_domain() { return bottom_klass()->protection_domain(); }
79 private:
80 // Either oop or narrowOop depending on UseCompressedOops.
81 // must be called from within ObjArrayKlass.cpp
82 template <class T> void do_copy(arrayOop s, T* src, arrayOop d,
83 T* dst, int length, TRAPS);
84 protected:
85 // Returns the ObjArrayKlass for n'th dimension.
86 virtual Klass* array_klass_impl(bool or_null, int n, TRAPS);
88 // Returns the array class with this class as element type.
89 virtual Klass* array_klass_impl(bool or_null, TRAPS);
91 public:
92 // Casting from Klass*
93 static ObjArrayKlass* cast(Klass* k) {
94 assert(k->oop_is_objArray(), "cast to ObjArrayKlass");
95 return (ObjArrayKlass*) k;
96 }
98 // Sizing
99 static int header_size() { return sizeof(ObjArrayKlass)/HeapWordSize; }
100 int size() const { return ArrayKlass::static_size(header_size()); }
102 // Initialization (virtual from Klass)
103 void initialize(TRAPS);
105 // Garbage collection
106 void oop_follow_contents(oop obj);
107 inline void oop_follow_contents(oop obj, int index);
108 template <class T> inline void objarray_follow_contents(oop obj, int index);
110 int oop_adjust_pointers(oop obj);
112 // Parallel Scavenge and Parallel Old
113 PARALLEL_GC_DECLS
114 #ifndef SERIALGC
115 inline void oop_follow_contents(ParCompactionManager* cm, oop obj, int index);
116 template <class T> inline void
117 objarray_follow_contents(ParCompactionManager* cm, oop obj, int index);
118 #endif // !SERIALGC
120 // Iterators
121 int oop_oop_iterate(oop obj, ExtendedOopClosure* blk) {
122 return oop_oop_iterate_v(obj, blk);
123 }
124 int oop_oop_iterate_m(oop obj, ExtendedOopClosure* blk, MemRegion mr) {
125 return oop_oop_iterate_v_m(obj, blk, mr);
126 }
127 #define ObjArrayKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix) \
128 int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk); \
129 int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk, \
130 MemRegion mr); \
131 int oop_oop_iterate_range##nv_suffix(oop obj, OopClosureType* blk, \
132 int start, int end);
134 ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DECL)
135 ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayKlass_OOP_OOP_ITERATE_DECL)
137 // JVM support
138 jint compute_modifier_flags(TRAPS) const;
140 public:
141 // Printing
142 void print_on(outputStream* st) const;
143 void print_value_on(outputStream* st) const;
145 void oop_print_value_on(oop obj, outputStream* st);
146 #ifndef PRODUCT
147 void oop_print_on (oop obj, outputStream* st);
148 #endif //PRODUCT
150 const char* internal_name() const;
152 // Verification
153 void verify_on(outputStream* st);
155 void oop_verify_on(oop obj, outputStream* st);
156 };
158 #endif // SHARE_VM_OOPS_OBJARRAYKLASS_HPP