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annotate src/share/vm/oops/instanceMirrorKlass.cpp @ 2376:c7f3d0b4570f

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7017732: move static fields into Class to prepare for perm gen removal Reviewed-by: kvn, coleenp, twisti, stefank
author never
date Fri, 18 Mar 2011 16:00:34 -0700
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children e5928e7dab26
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1 /*
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2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "classfile/javaClasses.hpp"
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27 #include "classfile/systemDictionary.hpp"
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28 #include "gc_implementation/shared/markSweep.inline.hpp"
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29 #include "gc_interface/collectedHeap.inline.hpp"
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30 #include "memory/genOopClosures.inline.hpp"
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31 #include "memory/oopFactory.hpp"
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32 #include "memory/permGen.hpp"
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33 #include "oops/instanceKlass.hpp"
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34 #include "oops/instanceMirrorKlass.hpp"
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35 #include "oops/instanceOop.hpp"
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36 #include "oops/oop.inline.hpp"
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37 #include "oops/symbol.hpp"
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38 #include "runtime/handles.inline.hpp"
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39 #ifndef SERIALGC
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40 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
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41 #include "gc_implementation/g1/g1OopClosures.inline.hpp"
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42 #include "gc_implementation/g1/g1RemSet.inline.hpp"
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43 #include "gc_implementation/g1/heapRegionSeq.inline.hpp"
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44 #include "gc_implementation/parNew/parOopClosures.inline.hpp"
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45 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp"
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46 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
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47 #include "oops/oop.pcgc.inline.hpp"
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48 #endif
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49
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50 int instanceMirrorKlass::_offset_of_static_fields = 0;
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51
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52 #ifdef ASSERT
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53 template <class T> void assert_is_in(T *p) {
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54 T heap_oop = oopDesc::load_heap_oop(p);
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55 if (!oopDesc::is_null(heap_oop)) {
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56 oop o = oopDesc::decode_heap_oop_not_null(heap_oop);
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57 assert(Universe::heap()->is_in(o), "should be in heap");
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58 }
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59 }
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60 template <class T> void assert_is_in_closed_subset(T *p) {
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61 T heap_oop = oopDesc::load_heap_oop(p);
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62 if (!oopDesc::is_null(heap_oop)) {
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63 oop o = oopDesc::decode_heap_oop_not_null(heap_oop);
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64 assert(Universe::heap()->is_in_closed_subset(o), "should be in closed");
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65 }
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66 }
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67 template <class T> void assert_is_in_reserved(T *p) {
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68 T heap_oop = oopDesc::load_heap_oop(p);
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69 if (!oopDesc::is_null(heap_oop)) {
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70 oop o = oopDesc::decode_heap_oop_not_null(heap_oop);
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71 assert(Universe::heap()->is_in_reserved(o), "should be in reserved");
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72 }
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73 }
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74 template <class T> void assert_nothing(T *p) {}
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75
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76 #else
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77 template <class T> void assert_is_in(T *p) {}
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78 template <class T> void assert_is_in_closed_subset(T *p) {}
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79 template <class T> void assert_is_in_reserved(T *p) {}
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80 template <class T> void assert_nothing(T *p) {}
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81 #endif // ASSERT
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82
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83 #define InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE( \
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84 T, start_p, count, do_oop, \
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85 assert_fn) \
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86 { \
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87 T* p = (T*)(start_p); \
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88 T* const end = p + (count); \
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89 while (p < end) { \
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90 (assert_fn)(p); \
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91 do_oop; \
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92 ++p; \
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93 } \
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94 }
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95
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96 #define InstanceMirrorKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \
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97 T, start_p, count, low, high, \
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98 do_oop, assert_fn) \
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99 { \
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100 T* const l = (T*)(low); \
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101 T* const h = (T*)(high); \
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102 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \
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103 mask_bits((intptr_t)h, sizeof(T)-1) == 0, \
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104 "bounded region must be properly aligned"); \
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105 T* p = (T*)(start_p); \
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106 T* end = p + (count); \
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107 if (p < l) p = l; \
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108 if (end > h) end = h; \
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109 while (p < end) { \
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110 (assert_fn)(p); \
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111 do_oop; \
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112 ++p; \
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113 } \
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114 }
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115
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116
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117 #define InstanceMirrorKlass_OOP_ITERATE(start_p, count, \
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118 do_oop, assert_fn) \
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119 { \
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120 if (UseCompressedOops) { \
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121 InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \
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122 start_p, count, \
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123 do_oop, assert_fn) \
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124 } else { \
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125 InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE(oop, \
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126 start_p, count, \
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127 do_oop, assert_fn) \
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128 } \
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129 }
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130
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131 // The following macros call specialized macros, passing either oop or
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132 // narrowOop as the specialization type. These test the UseCompressedOops
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133 // flag.
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134 #define InstanceMirrorKlass_BOUNDED_OOP_ITERATE(start_p, count, low, high, \
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135 do_oop, assert_fn) \
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136 { \
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137 if (UseCompressedOops) { \
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138 InstanceMirrorKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \
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139 start_p, count, \
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140 low, high, \
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141 do_oop, assert_fn) \
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142 } else { \
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143 InstanceMirrorKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \
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144 start_p, count, \
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145 low, high, \
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146 do_oop, assert_fn) \
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147 } \
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148 }
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149
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150
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151 void instanceMirrorKlass::oop_follow_contents(oop obj) {
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152 instanceKlass::oop_follow_contents(obj);
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153 InstanceMirrorKlass_OOP_ITERATE( \
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154 start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \
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155 MarkSweep::mark_and_push(p), \
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156 assert_is_in_closed_subset)
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157 }
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158
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159 #ifndef SERIALGC
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160 void instanceMirrorKlass::oop_follow_contents(ParCompactionManager* cm,
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161 oop obj) {
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162 instanceKlass::oop_follow_contents(cm, obj);
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163 InstanceMirrorKlass_OOP_ITERATE( \
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164 start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \
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165 PSParallelCompact::mark_and_push(cm, p), \
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166 assert_is_in)
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167 }
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168 #endif // SERIALGC
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169
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170 int instanceMirrorKlass::oop_adjust_pointers(oop obj) {
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171 int size = oop_size(obj);
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172 instanceKlass::oop_adjust_pointers(obj);
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173 InstanceMirrorKlass_OOP_ITERATE( \
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174 start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \
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175 MarkSweep::adjust_pointer(p), \
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176 assert_nothing)
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177 return size;
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178 }
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179
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180 #define InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(T, nv_suffix) \
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181 InstanceMirrorKlass_OOP_ITERATE( \
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182 start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \
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183 (closure)->do_oop##nv_suffix(p), \
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184 assert_is_in_closed_subset) \
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185 return oop_size(obj); \
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186
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187 #define InstanceMirrorKlass_BOUNDED_SPECIALIZED_OOP_ITERATE(T, nv_suffix, mr) \
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188 InstanceMirrorKlass_BOUNDED_OOP_ITERATE( \
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189 start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \
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190 mr.start(), mr.end(), \
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191 (closure)->do_oop##nv_suffix(p), \
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192 assert_is_in_closed_subset) \
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193 return oop_size(obj); \
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194
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195
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196 // Macro to define instanceMirrorKlass::oop_oop_iterate for virtual/nonvirtual for
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197 // all closures. Macros calling macros above for each oop size.
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198
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199 #define InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \
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200 \
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201 int instanceMirrorKlass:: \
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202 oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \
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203 /* Get size before changing pointers */ \
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204 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk); \
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205 \
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206 instanceKlass::oop_oop_iterate##nv_suffix(obj, closure); \
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207 \
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208 if (UseCompressedOops) { \
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209 InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(narrowOop, nv_suffix); \
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210 } else { \
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211 InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(oop, nv_suffix); \
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212 } \
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213 }
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214
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215 #ifndef SERIALGC
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216 #define InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \
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217 \
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218 int instanceMirrorKlass:: \
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219 oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) { \
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220 /* Get size before changing pointers */ \
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221 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk); \
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222 \
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223 instanceKlass::oop_oop_iterate_backwards##nv_suffix(obj, closure); \
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224 \
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225 if (UseCompressedOops) { \
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226 InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(narrowOop, nv_suffix); \
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227 } else { \
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228 InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(oop, nv_suffix); \
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229 } \
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230 }
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231 #endif // !SERIALGC
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232
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233
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234 #define InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \
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235 \
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236 int instanceMirrorKlass:: \
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237 oop_oop_iterate##nv_suffix##_m(oop obj, \
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238 OopClosureType* closure, \
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239 MemRegion mr) { \
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240 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk); \
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241 \
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242 instanceKlass::oop_oop_iterate##nv_suffix##_m(obj, closure, mr); \
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243 if (UseCompressedOops) { \
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244 InstanceMirrorKlass_BOUNDED_SPECIALIZED_OOP_ITERATE(narrowOop, nv_suffix, mr); \
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245 } else { \
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246 InstanceMirrorKlass_BOUNDED_SPECIALIZED_OOP_ITERATE(oop, nv_suffix, mr); \
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247 } \
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248 }
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249
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250 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN)
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251 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN)
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252 #ifndef SERIALGC
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253 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
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254 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
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255 #endif // SERIALGC
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256 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m)
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257 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m)
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258
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259 #ifndef SERIALGC
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260 void instanceMirrorKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
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261 instanceKlass::oop_push_contents(pm, obj);
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262 InstanceMirrorKlass_OOP_ITERATE( \
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263 start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj),\
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264 if (PSScavenge::should_scavenge(p)) { \
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265 pm->claim_or_forward_depth(p); \
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266 }, \
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267 assert_nothing )
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268 }
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269
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270 int instanceMirrorKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
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271 instanceKlass::oop_update_pointers(cm, obj);
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272 InstanceMirrorKlass_OOP_ITERATE( \
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273 start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj),\
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274 PSParallelCompact::adjust_pointer(p), \
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275 assert_nothing)
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276 return oop_size(obj);
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277 }
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278 #endif // SERIALGC
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279
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280 int instanceMirrorKlass::instance_size(KlassHandle k) {
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281 if (k() != NULL && k->oop_is_instance()) {
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282 return align_object_size(size_helper() + instanceKlass::cast(k())->static_field_size());
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283 }
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284 return size_helper();
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285 }
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286
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287 instanceOop instanceMirrorKlass::allocate_instance(KlassHandle k, TRAPS) {
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288 // Query before forming handle.
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289 int size = instance_size(k);
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290 KlassHandle h_k(THREAD, as_klassOop());
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291 instanceOop i;
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292
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293 if (JavaObjectsInPerm) {
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294 i = (instanceOop) CollectedHeap::permanent_obj_allocate(h_k, size, CHECK_NULL);
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295 } else {
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296 assert(ScavengeRootsInCode > 0, "must be");
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297 i = (instanceOop) CollectedHeap::obj_allocate(h_k, size, CHECK_NULL);
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298 }
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299
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300 return i;
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301 }
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302
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303 int instanceMirrorKlass::oop_size(oop obj) const {
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304 return java_lang_Class::oop_size(obj);
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305 }
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306
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307 int instanceMirrorKlass::compute_static_oop_field_count(oop obj) {
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308 klassOop k = java_lang_Class::as_klassOop(obj);
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309 if (k != NULL && k->klass_part()->oop_is_instance()) {
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310 return instanceKlass::cast(k)->static_oop_field_count();
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311 }
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312 return 0;
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313 }