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annotate src/share/vm/oops/instanceClassLoaderKlass.cpp @ 12355:cefad50507d8

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Merge with hs25-b53
author Gilles Duboscq <duboscq@ssw.jku.at>
date Fri, 11 Oct 2013 10:38:03 +0200
parents db9981fd3124
children ad72068ac41e
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1 /*
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2 * Copyright (c) 2011, 2012, 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 "oops/instanceKlass.hpp"
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33 #include "oops/instanceClassLoaderKlass.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/parNew/parOopClosures.inline.hpp"
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42 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp"
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43 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
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44 #include "oops/oop.pcgc.inline.hpp"
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45 #endif // INCLUDE_ALL_GCS
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46
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47 #define if_do_metadata_checked(closure, nv_suffix) \
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48 /* Make sure the non-virtual and the virtual versions match. */ \
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49 assert(closure->do_metadata##nv_suffix() == closure->do_metadata(), \
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50 "Inconsistency in do_metadata"); \
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51 if (closure->do_metadata##nv_suffix())
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52
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53 // Macro to define InstanceClassLoaderKlass::oop_oop_iterate for virtual/nonvirtual for
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54 // all closures. Macros calling macros above for each oop size.
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55 // Since ClassLoader objects have only a pointer to the loader_data, they are not
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56 // compressed nor does the pointer move.
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57
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58 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)\
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59 \
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60 int InstanceClassLoaderKlass:: \
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61 oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \
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62 /* Get size before changing pointers */ \
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63 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\
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64 int size = InstanceKlass::oop_oop_iterate##nv_suffix(obj, closure); \
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65 \
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66 if_do_metadata_checked(closure, nv_suffix) { \
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67 ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj); \
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68 /* cld can be null if we have a non-registered class loader. */ \
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69 if (cld != NULL) { \
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70 closure->do_class_loader_data(cld); \
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71 } \
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72 } \
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73 \
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74 return size; \
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75 }
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76
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77 #if INCLUDE_ALL_GCS
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78 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \
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79 \
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80 int InstanceClassLoaderKlass:: \
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81 oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) { \
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82 /* Get size before changing pointers */ \
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83 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\
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84 int size = InstanceKlass::oop_oop_iterate_backwards##nv_suffix(obj, closure); \
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85 return size; \
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86 }
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87 #endif // INCLUDE_ALL_GCS
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88
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89
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90 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \
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91 \
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92 int InstanceClassLoaderKlass:: \
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93 oop_oop_iterate##nv_suffix##_m(oop obj, \
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94 OopClosureType* closure, \
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95 MemRegion mr) { \
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96 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\
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97 \
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98 int size = InstanceKlass::oop_oop_iterate##nv_suffix##_m(obj, closure, mr); \
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99 \
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100 if_do_metadata_checked(closure, nv_suffix) { \
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101 if (mr.contains(obj)) { \
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102 ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj); \
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103 /* cld can be null if we have a non-registered class loader. */ \
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104 if (cld != NULL) { \
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105 closure->do_class_loader_data(cld); \
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106 } \
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107 } \
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108 } \
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109 \
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110 return size; \
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111 }
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112
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113 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN)
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114 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN)
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115 #if INCLUDE_ALL_GCS
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116 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
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117 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
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118 #endif // INCLUDE_ALL_GCS
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119 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m)
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120 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m)
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121
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122 void InstanceClassLoaderKlass::oop_follow_contents(oop obj) {
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123 InstanceKlass::oop_follow_contents(obj);
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124 ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj);
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125
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126 // We must NULL check here, since the class loader
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127 // can be found before the loader data has been set up.
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128 if(loader_data != NULL) {
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129 MarkSweep::follow_class_loader(loader_data);
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130 }
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131 }
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132
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133 #if INCLUDE_ALL_GCS
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134 void InstanceClassLoaderKlass::oop_follow_contents(ParCompactionManager* cm,
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135 oop obj) {
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136 InstanceKlass::oop_follow_contents(cm, obj);
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137 ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj);
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138 if (loader_data != NULL) {
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139 PSParallelCompact::follow_class_loader(cm, loader_data);
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140 }
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141 }
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142
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143 void InstanceClassLoaderKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
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144 InstanceKlass::oop_push_contents(pm, obj);
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145
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146 // This is called by the young collector. It will already have taken care of
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147 // all class loader data. So, we don't have to follow the class loader ->
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148 // class loader data link.
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149 }
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150
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151 int InstanceClassLoaderKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
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152 InstanceKlass::oop_update_pointers(cm, obj);
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153 ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj);
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154 if (loader_data != NULL) {
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155 PSParallelCompact::adjust_class_loader(cm, loader_data);
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156 }
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157 return size_helper();
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158 }
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159 #endif // INCLUDE_ALL_GCS
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160