Mercurial > hg > graal-compiler
annotate src/share/vm/oops/arrayKlass.hpp @ 7046:b6a8f2d23057
VM support for deferred reads and writes: ScopeDesc, DebugInfo, DebugInfoRecorder
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Tue, 27 Nov 2012 13:43:04 +0100 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_OOPS_ARRAYKLASS_HPP |
26 #define SHARE_VM_OOPS_ARRAYKLASS_HPP | |
27 | |
28 #include "memory/universe.hpp" | |
29 #include "oops/klass.hpp" | |
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30 |
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31 class klassVtable; |
1972 | 32 |
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33 // ArrayKlass is the abstract baseclass for all array classes |
0 | 34 |
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35 class ArrayKlass: public Klass { |
0 | 36 friend class VMStructs; |
37 private: | |
38 int _dimension; // This is n'th-dimensional array. | |
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39 Klass* volatile _higher_dimension; // Refers the (n+1)'th-dimensional array (if present). |
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40 Klass* volatile _lower_dimension; // Refers the (n-1)'th-dimensional array (if present). |
0 | 41 int _vtable_len; // size of vtable for this klass |
42 juint _alloc_size; // allocation profiling support | |
43 oop _component_mirror; // component type, as a java/lang/Class | |
44 | |
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45 protected: |
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46 // Constructors |
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47 // The constructor with the Symbol argument does the real array |
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48 // initialization, the other is a dummy |
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49 ArrayKlass(Symbol* name); |
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50 ArrayKlass() { assert(DumpSharedSpaces || UseSharedSpaces, "only for cds"); } |
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51 |
0 | 52 public: |
53 // Testing operation | |
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54 bool oop_is_array_slow() const { return true; } |
0 | 55 |
56 // Instance variables | |
57 int dimension() const { return _dimension; } | |
58 void set_dimension(int dimension) { _dimension = dimension; } | |
59 | |
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60 Klass* higher_dimension() const { return _higher_dimension; } |
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61 void set_higher_dimension(Klass* k) { _higher_dimension = k; } |
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62 Klass** adr_higher_dimension() { return (Klass**)&this->_higher_dimension;} |
0 | 63 |
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64 Klass* lower_dimension() const { return _lower_dimension; } |
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65 void set_lower_dimension(Klass* k) { _lower_dimension = k; } |
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66 Klass** adr_lower_dimension() { return (Klass**)&this->_lower_dimension;} |
0 | 67 |
68 // Allocation profiling support | |
69 juint alloc_size() const { return _alloc_size; } | |
70 void set_alloc_size(juint n) { _alloc_size = n; } | |
71 | |
72 // offset of first element, including any padding for the sake of alignment | |
73 int array_header_in_bytes() const { return layout_helper_header_size(layout_helper()); } | |
74 int log2_element_size() const { return layout_helper_log2_element_size(layout_helper()); } | |
75 // type of elements (T_OBJECT for both oop arrays and array-arrays) | |
76 BasicType element_type() const { return layout_helper_element_type(layout_helper()); } | |
77 | |
78 oop component_mirror() const { return _component_mirror; } | |
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79 void set_component_mirror(oop m) { klass_oop_store(&_component_mirror, m); } |
0 | 80 oop* adr_component_mirror() { return (oop*)&this->_component_mirror;} |
81 | |
82 // Compiler/Interpreter offset | |
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83 static ByteSize component_mirror_offset() { return in_ByteSize(offset_of(ArrayKlass, _component_mirror)); } |
0 | 84 |
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85 virtual Klass* java_super() const;//{ return SystemDictionary::Object_klass(); } |
0 | 86 |
87 // Allocation | |
88 // Sizes points to the first dimension of the array, subsequent dimensions | |
89 // are always in higher memory. The callers of these set that up. | |
90 virtual oop multi_allocate(int rank, jint* sizes, TRAPS); | |
91 objArrayOop allocate_arrayArray(int n, int length, TRAPS); | |
92 | |
93 // Lookup operations | |
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94 Method* uncached_lookup_method(Symbol* name, Symbol* signature) const; |
0 | 95 |
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96 // Casting from Klass* |
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97 static ArrayKlass* cast(Klass* k) { |
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98 assert(k->oop_is_array(), "cast to ArrayKlass"); |
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99 return (ArrayKlass*) k; |
0 | 100 } |
101 | |
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102 GrowableArray<Klass*>* compute_secondary_supers(int num_extra_slots); |
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103 bool compute_is_subtype_of(Klass* k); |
0 | 104 |
105 // Sizing | |
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106 static int header_size() { return sizeof(ArrayKlass)/HeapWordSize; } |
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107 static int static_size(int header_size); |
0 | 108 |
109 // Java vtable | |
110 klassVtable* vtable() const; // return new klassVtable | |
111 int vtable_length() const { return _vtable_len; } | |
112 static int base_vtable_length() { return Universe::base_vtable_size(); } | |
113 void set_vtable_length(int len) { assert(len == base_vtable_length(), "bad length"); _vtable_len = len; } | |
114 protected: | |
115 inline intptr_t* start_of_vtable() const; | |
116 | |
117 public: | |
118 // Iterators | |
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119 void array_klasses_do(void f(Klass* k)); |
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120 void array_klasses_do(void f(Klass* k, TRAPS), TRAPS); |
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121 void with_array_klasses_do(void f(Klass* k)); |
0 | 122 |
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123 // GC support |
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124 virtual void oops_do(OopClosure* cl); |
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125 |
0 | 126 // Return a handle. |
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127 static void complete_create_array_klass(ArrayKlass* k, KlassHandle super_klass, TRAPS); |
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128 |
0 | 129 |
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130 // jvm support |
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131 jint compute_modifier_flags(TRAPS) const; |
0 | 132 |
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133 // JVMTI support |
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134 jint jvmti_class_status() const; |
0 | 135 |
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136 // CDS support - remove and restore oops from metadata. Oops are not shared. |
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137 virtual void remove_unshareable_info(); |
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138 virtual void restore_unshareable_info(TRAPS); |
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139 |
0 | 140 // Printing |
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141 void print_on(outputStream* st) const; |
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142 void print_value_on(outputStream* st) const; |
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143 |
0 | 144 void oop_print_on(oop obj, outputStream* st); |
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145 |
0 | 146 // Verification |
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147 void verify_on(outputStream* st); |
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148 |
0 | 149 void oop_verify_on(oop obj, outputStream* st); |
150 }; | |
1972 | 151 |
152 #endif // SHARE_VM_OOPS_ARRAYKLASS_HPP |