Mercurial > hg > truffle
annotate src/share/vm/oops/instanceMirrorKlass.cpp @ 21571:189d7a64b4d9
Truffle/Debugging: fix a python problem with the "sldebug" command
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Wed, 27 May 2015 16:36:03 -0700 |
parents | 7848fc12602b |
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rev | line source |
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1 /* |
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2 * Copyright (c) 2011, 2014, 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/iterator.inline.hpp" |
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32 #include "memory/oopFactory.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 #include "utilities/macros.hpp" |
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40 #if INCLUDE_ALL_GCS |
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41 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp" |
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42 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
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43 #include "gc_implementation/g1/g1OopClosures.inline.hpp" |
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44 #include "gc_implementation/g1/g1RemSet.inline.hpp" |
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45 #include "gc_implementation/g1/heapRegionManager.inline.hpp" |
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46 #include "gc_implementation/parNew/parOopClosures.inline.hpp" |
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47 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" |
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48 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" |
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49 #include "oops/oop.pcgc.inline.hpp" |
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50 #endif // INCLUDE_ALL_GCS |
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51 |
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52 int InstanceMirrorKlass::_offset_of_static_fields = 0; |
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53 |
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54 #ifdef ASSERT |
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55 template <class T> void assert_is_in(T *p) { |
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56 T heap_oop = oopDesc::load_heap_oop(p); |
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57 if (!oopDesc::is_null(heap_oop)) { |
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58 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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59 assert(Universe::heap()->is_in(o), "should be in heap"); |
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60 } |
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61 } |
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62 template <class T> void assert_is_in_closed_subset(T *p) { |
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63 T heap_oop = oopDesc::load_heap_oop(p); |
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64 if (!oopDesc::is_null(heap_oop)) { |
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65 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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66 assert(Universe::heap()->is_in_closed_subset(o), "should be in closed"); |
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67 } |
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68 } |
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69 template <class T> void assert_is_in_reserved(T *p) { |
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70 T heap_oop = oopDesc::load_heap_oop(p); |
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71 if (!oopDesc::is_null(heap_oop)) { |
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72 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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73 assert(Universe::heap()->is_in_reserved(o), "should be in reserved"); |
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74 } |
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75 } |
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76 template <class T> void assert_nothing(T *p) {} |
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77 |
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78 #else |
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79 template <class T> void assert_is_in(T *p) {} |
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80 template <class T> void assert_is_in_closed_subset(T *p) {} |
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81 template <class T> void assert_is_in_reserved(T *p) {} |
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82 template <class T> void assert_nothing(T *p) {} |
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83 #endif // ASSERT |
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84 |
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85 #define InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE( \ |
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86 T, start_p, count, do_oop, \ |
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87 assert_fn) \ |
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88 { \ |
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89 T* p = (T*)(start_p); \ |
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90 T* const end = p + (count); \ |
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91 while (p < end) { \ |
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92 (assert_fn)(p); \ |
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93 do_oop; \ |
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94 ++p; \ |
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95 } \ |
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96 } |
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97 |
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98 #define InstanceMirrorKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \ |
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99 T, start_p, count, low, high, \ |
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100 do_oop, assert_fn) \ |
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101 { \ |
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102 T* const l = (T*)(low); \ |
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103 T* const h = (T*)(high); \ |
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104 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \ |
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105 mask_bits((intptr_t)h, sizeof(T)-1) == 0, \ |
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106 "bounded region must be properly aligned"); \ |
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107 T* p = (T*)(start_p); \ |
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108 T* end = p + (count); \ |
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109 if (p < l) p = l; \ |
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110 if (end > h) end = h; \ |
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111 while (p < end) { \ |
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112 (assert_fn)(p); \ |
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113 do_oop; \ |
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114 ++p; \ |
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115 } \ |
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116 } |
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117 |
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118 |
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119 #define InstanceMirrorKlass_OOP_ITERATE(start_p, count, \ |
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120 do_oop, assert_fn) \ |
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121 { \ |
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122 if (UseCompressedOops) { \ |
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123 InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
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124 start_p, count, \ |
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125 do_oop, assert_fn) \ |
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126 } else { \ |
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127 InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
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128 start_p, count, \ |
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129 do_oop, assert_fn) \ |
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130 } \ |
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131 } |
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132 |
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133 // The following macros call specialized macros, passing either oop or |
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134 // narrowOop as the specialization type. These test the UseCompressedOops |
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135 // flag. |
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136 #define InstanceMirrorKlass_BOUNDED_OOP_ITERATE(start_p, count, low, high, \ |
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137 do_oop, assert_fn) \ |
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138 { \ |
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139 if (UseCompressedOops) { \ |
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140 InstanceMirrorKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
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141 start_p, count, \ |
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142 low, high, \ |
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143 do_oop, assert_fn) \ |
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144 } else { \ |
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145 InstanceMirrorKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
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146 start_p, count, \ |
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147 low, high, \ |
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148 do_oop, assert_fn) \ |
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149 } \ |
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150 } |
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151 |
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152 |
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153 void InstanceMirrorKlass::oop_follow_contents(oop obj) { |
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154 InstanceKlass::oop_follow_contents(obj); |
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155 |
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156 // Follow the klass field in the mirror. |
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157 Klass* klass = java_lang_Class::as_Klass(obj); |
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158 if (klass != NULL) { |
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159 // An anonymous class doesn't have its own class loader, so the call |
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160 // to follow_klass will mark and push its java mirror instead of the |
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161 // class loader. When handling the java mirror for an anonymous class |
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162 // we need to make sure its class loader data is claimed, this is done |
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163 // by calling follow_class_loader explicitly. For non-anonymous classes |
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164 // the call to follow_class_loader is made when the class loader itself |
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165 // is handled. |
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166 if (klass->oop_is_instance() && InstanceKlass::cast(klass)->is_anonymous()) { |
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167 MarkSweep::follow_class_loader(klass->class_loader_data()); |
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168 } else { |
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169 MarkSweep::follow_klass(klass); |
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170 } |
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171 } else { |
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172 // If klass is NULL then this a mirror for a primitive type. |
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173 // We don't have to follow them, since they are handled as strong |
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174 // roots in Universe::oops_do. |
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175 assert(java_lang_Class::is_primitive(obj), "Sanity check"); |
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176 } |
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177 |
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178 InstanceMirrorKlass_OOP_ITERATE( \ |
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179 start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \ |
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180 MarkSweep::mark_and_push(p), \ |
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181 assert_is_in_closed_subset) |
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182 } |
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183 |
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184 #if INCLUDE_ALL_GCS |
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185 void InstanceMirrorKlass::oop_follow_contents(ParCompactionManager* cm, |
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186 oop obj) { |
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187 InstanceKlass::oop_follow_contents(cm, obj); |
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188 |
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189 // Follow the klass field in the mirror. |
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190 Klass* klass = java_lang_Class::as_Klass(obj); |
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191 if (klass != NULL) { |
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192 // An anonymous class doesn't have its own class loader, so the call |
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193 // to follow_klass will mark and push its java mirror instead of the |
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194 // class loader. When handling the java mirror for an anonymous class |
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195 // we need to make sure its class loader data is claimed, this is done |
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196 // by calling follow_class_loader explicitly. For non-anonymous classes |
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197 // the call to follow_class_loader is made when the class loader itself |
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198 // is handled. |
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199 if (klass->oop_is_instance() && InstanceKlass::cast(klass)->is_anonymous()) { |
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200 PSParallelCompact::follow_class_loader(cm, klass->class_loader_data()); |
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201 } else { |
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202 PSParallelCompact::follow_klass(cm, klass); |
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203 } |
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204 } else { |
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205 // If klass is NULL then this a mirror for a primitive type. |
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206 // We don't have to follow them, since they are handled as strong |
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207 // roots in Universe::oops_do. |
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208 assert(java_lang_Class::is_primitive(obj), "Sanity check"); |
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209 } |
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210 |
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211 InstanceMirrorKlass_OOP_ITERATE( \ |
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212 start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \ |
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213 PSParallelCompact::mark_and_push(cm, p), \ |
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214 assert_is_in) |
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215 } |
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216 #endif // INCLUDE_ALL_GCS |
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217 |
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218 int InstanceMirrorKlass::oop_adjust_pointers(oop obj) { |
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219 int size = oop_size(obj); |
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220 InstanceKlass::oop_adjust_pointers(obj); |
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221 |
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222 InstanceMirrorKlass_OOP_ITERATE( \ |
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223 start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \ |
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224 MarkSweep::adjust_pointer(p), \ |
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225 assert_nothing) |
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226 return size; |
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227 } |
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228 |
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229 #define InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(T, nv_suffix) \ |
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230 InstanceMirrorKlass_OOP_ITERATE( \ |
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231 start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \ |
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232 (closure)->do_oop##nv_suffix(p), \ |
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233 assert_is_in_closed_subset) \ |
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234 return oop_size(obj); \ |
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235 |
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236 #define InstanceMirrorKlass_BOUNDED_SPECIALIZED_OOP_ITERATE(T, nv_suffix, mr) \ |
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237 InstanceMirrorKlass_BOUNDED_OOP_ITERATE( \ |
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238 start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \ |
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239 mr.start(), mr.end(), \ |
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240 (closure)->do_oop##nv_suffix(p), \ |
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241 assert_is_in_closed_subset) \ |
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242 return oop_size(obj); \ |
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243 |
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244 |
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245 // Macro to define InstanceMirrorKlass::oop_oop_iterate for virtual/nonvirtual for |
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246 // all closures. Macros calling macros above for each oop size. |
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247 |
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248 #define InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
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249 \ |
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250 int InstanceMirrorKlass:: \ |
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251 oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ |
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252 /* Get size before changing pointers */ \ |
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253 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk); \ |
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254 \ |
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255 InstanceKlass::oop_oop_iterate##nv_suffix(obj, closure); \ |
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256 \ |
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257 if_do_metadata_checked(closure, nv_suffix) { \ |
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258 Klass* klass = java_lang_Class::as_Klass(obj); \ |
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259 /* We'll get NULL for primitive mirrors. */ \ |
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260 if (klass != NULL) { \ |
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261 closure->do_klass##nv_suffix(klass); \ |
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262 } \ |
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263 } \ |
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264 \ |
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265 if (UseCompressedOops) { \ |
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266 InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(narrowOop, nv_suffix); \ |
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267 } else { \ |
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268 InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(oop, nv_suffix); \ |
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269 } \ |
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270 } |
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271 |
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272 #if INCLUDE_ALL_GCS |
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273 #define InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
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274 \ |
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275 int InstanceMirrorKlass:: \ |
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276 oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) { \ |
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277 /* Get size before changing pointers */ \ |
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278 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk); \ |
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279 \ |
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280 InstanceKlass::oop_oop_iterate_backwards##nv_suffix(obj, closure); \ |
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281 \ |
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282 if (UseCompressedOops) { \ |
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283 InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(narrowOop, nv_suffix); \ |
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284 } else { \ |
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285 InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(oop, nv_suffix); \ |
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286 } \ |
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287 } |
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288 #endif // INCLUDE_ALL_GCS |
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289 |
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290 |
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291 #define InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
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292 \ |
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293 int InstanceMirrorKlass:: \ |
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294 oop_oop_iterate##nv_suffix##_m(oop obj, \ |
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295 OopClosureType* closure, \ |
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296 MemRegion mr) { \ |
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297 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk); \ |
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298 \ |
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299 InstanceKlass::oop_oop_iterate##nv_suffix##_m(obj, closure, mr); \ |
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300 \ |
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301 if_do_metadata_checked(closure, nv_suffix) { \ |
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302 if (mr.contains(obj)) { \ |
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303 Klass* klass = java_lang_Class::as_Klass(obj); \ |
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304 /* We'll get NULL for primitive mirrors. */ \ |
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305 if (klass != NULL) { \ |
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306 closure->do_klass##nv_suffix(klass); \ |
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307 } \ |
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308 } \ |
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309 } \ |
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310 \ |
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311 if (UseCompressedOops) { \ |
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312 InstanceMirrorKlass_BOUNDED_SPECIALIZED_OOP_ITERATE(narrowOop, nv_suffix, mr); \ |
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313 } else { \ |
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314 InstanceMirrorKlass_BOUNDED_SPECIALIZED_OOP_ITERATE(oop, nv_suffix, mr); \ |
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315 } \ |
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316 } |
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317 |
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318 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN) |
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319 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN) |
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320 #if INCLUDE_ALL_GCS |
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321 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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322 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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323 #endif // INCLUDE_ALL_GCS |
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324 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m) |
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325 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m) |
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326 |
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327 #if INCLUDE_ALL_GCS |
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328 void InstanceMirrorKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
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329 // Note that we don't have to follow the mirror -> klass pointer, since all |
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330 // klasses that are dirty will be scavenged when we iterate over the |
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331 // ClassLoaderData objects. |
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332 |
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333 InstanceKlass::oop_push_contents(pm, obj); |
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334 InstanceMirrorKlass_OOP_ITERATE( \ |
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335 start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj),\ |
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336 if (PSScavenge::should_scavenge(p)) { \ |
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337 pm->claim_or_forward_depth(p); \ |
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338 }, \ |
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339 assert_nothing ) |
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340 } |
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341 |
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342 int InstanceMirrorKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
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343 int size = oop_size(obj); |
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344 InstanceKlass::oop_update_pointers(cm, obj); |
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345 |
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346 InstanceMirrorKlass_OOP_ITERATE( \ |
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347 start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj),\ |
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348 PSParallelCompact::adjust_pointer(p), \ |
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349 assert_nothing) |
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350 return size; |
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351 } |
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352 #endif // INCLUDE_ALL_GCS |
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353 |
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354 int InstanceMirrorKlass::instance_size(KlassHandle k) { |
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355 if (k() != NULL && k->oop_is_instance()) { |
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356 return align_object_size(size_helper() + InstanceKlass::cast(k())->static_field_size()); |
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357 } |
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358 return size_helper(); |
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359 } |
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360 |
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361 instanceOop InstanceMirrorKlass::allocate_instance(KlassHandle k, TRAPS) { |
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362 // Query before forming handle. |
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363 int size = instance_size(k); |
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364 KlassHandle h_k(THREAD, this); |
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365 instanceOop i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL); |
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366 |
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367 // Since mirrors can be variable sized because of the static fields, store |
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368 // the size in the mirror itself. |
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369 java_lang_Class::set_oop_size(i, size); |
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370 |
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371 return i; |
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372 } |
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373 |
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374 int InstanceMirrorKlass::oop_size(oop obj) const { |
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375 return java_lang_Class::oop_size(obj); |
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376 } |
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377 |
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378 int InstanceMirrorKlass::compute_static_oop_field_count(oop obj) { |
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379 Klass* k = java_lang_Class::as_Klass(obj); |
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380 if (k != NULL && k->oop_is_instance()) { |
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381 return InstanceKlass::cast(k)->static_oop_field_count(); |
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382 } |
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383 return 0; |
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384 } |