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annotate src/share/vm/oops/instanceClassLoaderKlass.cpp @ 6862:8a5ea0a9ccc4

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7127708: G1: change task num types from int to uint in concurrent mark Summary: Change the type of various task num fields, parameters etc to unsigned and rename them to be more consistent with the other collectors. Code changes were also reviewed by Vitaly Davidovich. Reviewed-by: johnc Contributed-by: Kaushik Srenevasan <kaushik@twitter.com>
author johnc
date Sat, 06 Oct 2012 01:17:44 -0700
parents aed758eda82a
children db9981fd3124
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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 #ifndef SERIALGC
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40 #include "gc_implementation/parNew/parOopClosures.inline.hpp"
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41 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp"
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42 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
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43 #include "oops/oop.pcgc.inline.hpp"
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44 #endif
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45
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46 #define if_do_metadata_checked(closure, nv_suffix) \
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47 /* Make sure the non-virtual and the virtual versions match. */ \
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48 assert(closure->do_metadata##nv_suffix() == closure->do_metadata(), \
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49 "Inconsistency in do_metadata"); \
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50 if (closure->do_metadata##nv_suffix())
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51
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52 // Macro to define InstanceClassLoaderKlass::oop_oop_iterate for virtual/nonvirtual for
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53 // all closures. Macros calling macros above for each oop size.
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54 // Since ClassLoader objects have only a pointer to the loader_data, they are not
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55 // compressed nor does the pointer move.
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56
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57 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)\
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58 \
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59 int InstanceClassLoaderKlass:: \
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60 oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \
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61 /* Get size before changing pointers */ \
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62 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\
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63 int size = InstanceKlass::oop_oop_iterate##nv_suffix(obj, closure); \
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64 \
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65 if_do_metadata_checked(closure, nv_suffix) { \
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66 ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj); \
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67 /* cld can be null if we have a non-registered class loader. */ \
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68 if (cld != NULL) { \
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69 closure->do_class_loader_data(cld); \
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70 } \
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71 } \
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72 \
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73 return size; \
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74 }
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75
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76 #ifndef SERIALGC
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77 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \
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78 \
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79 int InstanceClassLoaderKlass:: \
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80 oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) { \
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81 /* Get size before changing pointers */ \
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82 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\
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83 int size = InstanceKlass::oop_oop_iterate_backwards##nv_suffix(obj, closure); \
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84 return size; \
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85 }
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86 #endif // !SERIALGC
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87
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88
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89 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \
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90 \
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91 int InstanceClassLoaderKlass:: \
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92 oop_oop_iterate##nv_suffix##_m(oop obj, \
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93 OopClosureType* closure, \
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94 MemRegion mr) { \
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95 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\
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96 \
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97 int size = InstanceKlass::oop_oop_iterate##nv_suffix##_m(obj, closure, mr); \
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98 \
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99 if_do_metadata_checked(closure, nv_suffix) { \
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100 if (mr.contains(obj)) { \
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101 ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj); \
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102 /* cld can be null if we have a non-registered class loader. */ \
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103 if (cld != NULL) { \
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104 closure->do_class_loader_data(cld); \
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105 } \
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106 } \
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107 } \
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108 \
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109 return size; \
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110 }
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111
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112 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN)
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113 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN)
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114 #ifndef SERIALGC
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115 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
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116 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
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117 #endif // SERIALGC
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118 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m)
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119 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m)
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120
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121 void InstanceClassLoaderKlass::oop_follow_contents(oop obj) {
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122 InstanceKlass::oop_follow_contents(obj);
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123 ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj);
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124
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125 // We must NULL check here, since the class loader
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126 // can be found before the loader data has been set up.
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127 if(loader_data != NULL) {
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128 MarkSweep::follow_class_loader(loader_data);
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129 }
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130 }
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131
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132 #ifndef SERIALGC
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133 void InstanceClassLoaderKlass::oop_follow_contents(ParCompactionManager* cm,
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134 oop obj) {
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135 InstanceKlass::oop_follow_contents(cm, obj);
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136 ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj);
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137 if (loader_data != NULL) {
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138 PSParallelCompact::follow_class_loader(cm, loader_data);
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139 }
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140 }
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141
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142 void InstanceClassLoaderKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
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143 InstanceKlass::oop_push_contents(pm, obj);
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144
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145 // This is called by the young collector. It will already have taken care of
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146 // all class loader data. So, we don't have to follow the class loader ->
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147 // class loader data link.
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148 }
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149
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150 int InstanceClassLoaderKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
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151 InstanceKlass::oop_update_pointers(cm, obj);
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152 ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj);
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153 if (loader_data != NULL) {
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154 PSParallelCompact::adjust_class_loader(cm, loader_data);
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155 }
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156 return size_helper();
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157 }
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158 #endif // SERIALGC
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159