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1 /*
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2 * Copyright 1998-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 #include "incls/_precompiled.incl"
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26 #include "incls/_cpCacheKlass.cpp.incl"
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27
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28
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29 int constantPoolCacheKlass::oop_size(oop obj) const {
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30 assert(obj->is_constantPoolCache(), "must be constantPool");
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31 return constantPoolCacheOop(obj)->object_size();
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32 }
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33
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34
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35 constantPoolCacheOop constantPoolCacheKlass::allocate(int length, TRAPS) {
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36 // allocate memory
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37 int size = constantPoolCacheOopDesc::object_size(length);
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38 KlassHandle klass (THREAD, as_klassOop());
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39 constantPoolCacheOop cache = (constantPoolCacheOop)
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40 CollectedHeap::permanent_array_allocate(klass, size, length, CHECK_NULL);
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41 cache->set_constant_pool(NULL);
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42 return cache;
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43 }
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44
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45
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46 klassOop constantPoolCacheKlass::create_klass(TRAPS) {
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47 constantPoolCacheKlass o;
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48 KlassHandle klassklass(THREAD, Universe::arrayKlassKlassObj());
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49 arrayKlassHandle k = base_create_array_klass(o.vtbl_value(), header_size(), klassklass, CHECK_NULL);
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50 KlassHandle super (THREAD, k->super());
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51 complete_create_array_klass(k, super, CHECK_NULL);
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52 return k();
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53 }
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54
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55
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56 void constantPoolCacheKlass::oop_follow_contents(oop obj) {
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57 assert(obj->is_constantPoolCache(), "obj must be constant pool cache");
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58 constantPoolCacheOop cache = (constantPoolCacheOop)obj;
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59 // Performance tweak: We skip iterating over the klass pointer since we
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60 // know that Universe::constantPoolCacheKlassObj never moves.
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61 // gc of constant pool cache instance variables
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62 MarkSweep::mark_and_push((oop*)cache->constant_pool_addr());
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63 // gc of constant pool cache entries
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64 int i = cache->length();
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65 while (i-- > 0) cache->entry_at(i)->follow_contents();
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66 }
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67
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68 #ifndef SERIALGC
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69 void constantPoolCacheKlass::oop_follow_contents(ParCompactionManager* cm,
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70 oop obj) {
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71 assert(obj->is_constantPoolCache(), "obj must be constant pool cache");
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72 constantPoolCacheOop cache = (constantPoolCacheOop)obj;
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73 // Performance tweak: We skip iterating over the klass pointer since we
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74 // know that Universe::constantPoolCacheKlassObj never moves.
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75 // gc of constant pool cache instance variables
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76 PSParallelCompact::mark_and_push(cm, (oop*)cache->constant_pool_addr());
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77 // gc of constant pool cache entries
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78 int i = cache->length();
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79 while (i-- > 0) cache->entry_at(i)->follow_contents(cm);
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80 }
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81 #endif // SERIALGC
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82
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83
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84 int constantPoolCacheKlass::oop_oop_iterate(oop obj, OopClosure* blk) {
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85 assert(obj->is_constantPoolCache(), "obj must be constant pool cache");
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86 constantPoolCacheOop cache = (constantPoolCacheOop)obj;
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87 // Get size before changing pointers.
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88 // Don't call size() or oop_size() since that is a virtual call.
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89 int size = cache->object_size();
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90 // Performance tweak: We skip iterating over the klass pointer since we
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91 // know that Universe::constantPoolCacheKlassObj never moves.
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92 // iteration over constant pool cache instance variables
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93 blk->do_oop((oop*)cache->constant_pool_addr());
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94 // iteration over constant pool cache entries
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95 for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->oop_iterate(blk);
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96 return size;
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97 }
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98
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99
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100 int constantPoolCacheKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) {
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101 assert(obj->is_constantPoolCache(), "obj must be constant pool cache");
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102 constantPoolCacheOop cache = (constantPoolCacheOop)obj;
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103 // Get size before changing pointers.
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104 // Don't call size() or oop_size() since that is a virtual call.
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105 int size = cache->object_size();
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106 // Performance tweak: We skip iterating over the klass pointer since we
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107 // know that Universe::constantPoolCacheKlassObj never moves.
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108 // iteration over constant pool cache instance variables
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109 oop* addr = (oop*)cache->constant_pool_addr();
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110 if (mr.contains(addr)) blk->do_oop(addr);
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111 // iteration over constant pool cache entries
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112 for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->oop_iterate_m(blk, mr);
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113 return size;
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114 }
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115
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116
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117 int constantPoolCacheKlass::oop_adjust_pointers(oop obj) {
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118 assert(obj->is_constantPoolCache(), "obj must be constant pool cache");
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119 constantPoolCacheOop cache = (constantPoolCacheOop)obj;
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120 // Get size before changing pointers.
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121 // Don't call size() or oop_size() since that is a virtual call.
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122 int size = cache->object_size();
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123 // Performance tweak: We skip iterating over the klass pointer since we
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124 // know that Universe::constantPoolCacheKlassObj never moves.
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125 // Iteration over constant pool cache instance variables
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126 MarkSweep::adjust_pointer((oop*)cache->constant_pool_addr());
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127 // iteration over constant pool cache entries
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128 for (int i = 0; i < cache->length(); i++)
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129 cache->entry_at(i)->adjust_pointers();
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130 return size;
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131 }
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132
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133 #ifndef SERIALGC
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134 void constantPoolCacheKlass::oop_copy_contents(PSPromotionManager* pm,
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135 oop obj) {
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136 assert(obj->is_constantPoolCache(), "should be constant pool");
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137 }
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138
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139 void constantPoolCacheKlass::oop_push_contents(PSPromotionManager* pm,
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140 oop obj) {
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141 assert(obj->is_constantPoolCache(), "should be constant pool");
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142 }
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143
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144 int
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145 constantPoolCacheKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
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146 assert(obj->is_constantPoolCache(), "obj must be constant pool cache");
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147 constantPoolCacheOop cache = (constantPoolCacheOop)obj;
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148
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149 // Iteration over constant pool cache instance variables
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150 PSParallelCompact::adjust_pointer((oop*)cache->constant_pool_addr());
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151
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152 // iteration over constant pool cache entries
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153 for (int i = 0; i < cache->length(); ++i) {
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154 cache->entry_at(i)->update_pointers();
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155 }
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156
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157 return cache->object_size();
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158 }
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159
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160 int
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161 constantPoolCacheKlass::oop_update_pointers(ParCompactionManager* cm, oop obj,
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162 HeapWord* beg_addr,
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163 HeapWord* end_addr) {
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164 assert(obj->is_constantPoolCache(), "obj must be constant pool cache");
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165 constantPoolCacheOop cache = (constantPoolCacheOop)obj;
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166
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167 // Iteration over constant pool cache instance variables
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168 oop* p;
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169 p = (oop*)cache->constant_pool_addr();
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170 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
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171
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172 // Iteration over constant pool cache entries
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173 for (int i = 0; i < cache->length(); ++i) {
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174 cache->entry_at(i)->update_pointers(beg_addr, end_addr);
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175 }
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176 return cache->object_size();
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177 }
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178 #endif // SERIALGC
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179
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180 #ifndef PRODUCT
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181
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182 void constantPoolCacheKlass::oop_print_on(oop obj, outputStream* st) {
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183 assert(obj->is_constantPoolCache(), "obj must be constant pool cache");
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184 constantPoolCacheOop cache = (constantPoolCacheOop)obj;
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185 // super print
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186 arrayKlass::oop_print_on(obj, st);
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187 // print constant pool cache entries
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188 for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->print(st, i);
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189 }
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190
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191 #endif
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192
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193 void constantPoolCacheKlass::oop_verify_on(oop obj, outputStream* st) {
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194 guarantee(obj->is_constantPoolCache(), "obj must be constant pool cache");
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195 constantPoolCacheOop cache = (constantPoolCacheOop)obj;
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196 // super verify
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197 arrayKlass::oop_verify_on(obj, st);
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198 // print constant pool cache entries
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199 for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->verify(st);
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200 }
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201
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202
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203 const char* constantPoolCacheKlass::internal_name() const {
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204 return "{constant pool cache}";
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205 }
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