Mercurial > hg > graal-compiler
annotate src/share/vm/oops/objArrayKlass.cpp @ 13715:b270b954ba9a
Avoid segfault in InstanceKlass::oop_print_on's String special case when the value array is null.
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Mon, 20 Jan 2014 19:49:47 +0100 |
parents | ad72068ac41e |
children | de6a9e811145 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
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. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
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26 #include "classfile/symbolTable.hpp" |
1972 | 27 #include "classfile/systemDictionary.hpp" |
28 #include "classfile/vmSymbols.hpp" | |
29 #include "gc_implementation/shared/markSweep.inline.hpp" | |
30 #include "gc_interface/collectedHeap.inline.hpp" | |
31 #include "memory/genOopClosures.inline.hpp" | |
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32 #include "memory/metadataFactory.hpp" |
1972 | 33 #include "memory/resourceArea.hpp" |
34 #include "memory/universe.inline.hpp" | |
35 #include "oops/instanceKlass.hpp" | |
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36 #include "oops/klass.inline.hpp" |
1972 | 37 #include "oops/objArrayKlass.hpp" |
38 #include "oops/objArrayKlass.inline.hpp" | |
39 #include "oops/objArrayOop.hpp" | |
40 #include "oops/oop.inline.hpp" | |
41 #include "oops/oop.inline2.hpp" | |
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42 #include "oops/symbol.hpp" |
1972 | 43 #include "runtime/handles.inline.hpp" |
44 #include "runtime/mutexLocker.hpp" | |
45 #include "utilities/copy.hpp" | |
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46 #include "utilities/macros.hpp" |
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47 #if INCLUDE_ALL_GCS |
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48 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp" |
1972 | 49 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
50 #include "gc_implementation/g1/g1OopClosures.inline.hpp" | |
51 #include "gc_implementation/g1/g1RemSet.inline.hpp" | |
52 #include "gc_implementation/g1/heapRegionSeq.inline.hpp" | |
53 #include "gc_implementation/parNew/parOopClosures.inline.hpp" | |
54 #include "gc_implementation/parallelScavenge/psCompactionManager.hpp" | |
55 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" | |
56 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
57 #include "oops/oop.pcgc.inline.hpp" | |
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58 #endif // INCLUDE_ALL_GCS |
0 | 59 |
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60 ObjArrayKlass* ObjArrayKlass::allocate(ClassLoaderData* loader_data, int n, KlassHandle klass_handle, Symbol* name, TRAPS) { |
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61 assert(ObjArrayKlass::header_size() <= InstanceKlass::header_size(), |
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62 "array klasses must be same size as InstanceKlass"); |
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63 |
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64 int size = ArrayKlass::static_size(ObjArrayKlass::header_size()); |
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65 |
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66 return new (loader_data, size, THREAD) ObjArrayKlass(n, klass_handle, name); |
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67 } |
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68 |
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69 Klass* ObjArrayKlass::allocate_objArray_klass(ClassLoaderData* loader_data, |
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70 int n, KlassHandle element_klass, TRAPS) { |
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71 |
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72 // Eagerly allocate the direct array supertype. |
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73 KlassHandle super_klass = KlassHandle(); |
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74 if (!Universe::is_bootstrapping() || SystemDictionary::Object_klass_loaded()) { |
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75 KlassHandle element_super (THREAD, element_klass->super()); |
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76 if (element_super.not_null()) { |
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77 // The element type has a direct super. E.g., String[] has direct super of Object[]. |
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78 super_klass = KlassHandle(THREAD, element_super->array_klass_or_null()); |
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79 bool supers_exist = super_klass.not_null(); |
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80 // Also, see if the element has secondary supertypes. |
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81 // We need an array type for each. |
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82 Array<Klass*>* element_supers = element_klass->secondary_supers(); |
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83 for( int i = element_supers->length()-1; i >= 0; i-- ) { |
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84 Klass* elem_super = element_supers->at(i); |
6983 | 85 if (elem_super->array_klass_or_null() == NULL) { |
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86 supers_exist = false; |
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87 break; |
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88 } |
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89 } |
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90 if (!supers_exist) { |
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91 // Oops. Not allocated yet. Back out, allocate it, and retry. |
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92 KlassHandle ek; |
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93 { |
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94 MutexUnlocker mu(MultiArray_lock); |
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95 MutexUnlocker mc(Compile_lock); // for vtables |
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96 Klass* sk = element_super->array_klass(CHECK_0); |
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97 super_klass = KlassHandle(THREAD, sk); |
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98 for( int i = element_supers->length()-1; i >= 0; i-- ) { |
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99 KlassHandle elem_super (THREAD, element_supers->at(i)); |
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100 elem_super->array_klass(CHECK_0); |
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101 } |
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102 // Now retry from the beginning |
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103 Klass* klass_oop = element_klass->array_klass(n, CHECK_0); |
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104 // Create a handle because the enclosing brace, when locking |
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105 // can cause a gc. Better to have this function return a Handle. |
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106 ek = KlassHandle(THREAD, klass_oop); |
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107 } // re-lock |
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108 return ek(); |
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109 } |
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110 } else { |
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111 // The element type is already Object. Object[] has direct super of Object. |
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112 super_klass = KlassHandle(THREAD, SystemDictionary::Object_klass()); |
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113 } |
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114 } |
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115 |
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116 // Create type name for klass. |
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117 Symbol* name = NULL; |
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118 if (!element_klass->oop_is_instance() || |
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119 (name = InstanceKlass::cast(element_klass())->array_name()) == NULL) { |
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120 |
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121 ResourceMark rm(THREAD); |
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122 char *name_str = element_klass->name()->as_C_string(); |
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123 int len = element_klass->name()->utf8_length(); |
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124 char *new_str = NEW_RESOURCE_ARRAY(char, len + 4); |
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125 int idx = 0; |
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126 new_str[idx++] = '['; |
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127 if (element_klass->oop_is_instance()) { // it could be an array or simple type |
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128 new_str[idx++] = 'L'; |
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129 } |
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130 memcpy(&new_str[idx], name_str, len * sizeof(char)); |
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131 idx += len; |
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132 if (element_klass->oop_is_instance()) { |
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133 new_str[idx++] = ';'; |
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134 } |
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135 new_str[idx++] = '\0'; |
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136 name = SymbolTable::new_permanent_symbol(new_str, CHECK_0); |
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137 if (element_klass->oop_is_instance()) { |
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138 InstanceKlass* ik = InstanceKlass::cast(element_klass()); |
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139 ik->set_array_name(name); |
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140 } |
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141 } |
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142 |
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143 // Initialize instance variables |
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144 ObjArrayKlass* oak = ObjArrayKlass::allocate(loader_data, n, element_klass, name, CHECK_0); |
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145 |
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146 // Add all classes to our internal class loader list here, |
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147 // including classes in the bootstrap (NULL) class loader. |
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148 // GC walks these as strong roots. |
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149 loader_data->add_class(oak); |
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150 |
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151 // Call complete_create_array_klass after all instance variables has been initialized. |
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152 ArrayKlass::complete_create_array_klass(oak, super_klass, CHECK_0); |
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153 |
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154 return oak; |
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155 } |
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156 |
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157 ObjArrayKlass::ObjArrayKlass(int n, KlassHandle element_klass, Symbol* name) : ArrayKlass(name) { |
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158 this->set_dimension(n); |
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159 this->set_element_klass(element_klass()); |
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160 // decrement refcount because object arrays are not explicitly freed. The |
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161 // InstanceKlass array_name() keeps the name counted while the klass is |
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162 // loaded. |
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163 name->decrement_refcount(); |
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164 |
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165 Klass* bk; |
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166 if (element_klass->oop_is_objArray()) { |
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167 bk = ObjArrayKlass::cast(element_klass())->bottom_klass(); |
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168 } else { |
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169 bk = element_klass(); |
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170 } |
6983 | 171 assert(bk != NULL && (bk->oop_is_instance() || bk->oop_is_typeArray()), "invalid bottom klass"); |
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172 this->set_bottom_klass(bk); |
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173 this->set_class_loader_data(bk->class_loader_data()); |
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174 |
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175 this->set_layout_helper(array_layout_helper(T_OBJECT)); |
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176 assert(this->oop_is_array(), "sanity"); |
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177 assert(this->oop_is_objArray(), "sanity"); |
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178 } |
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179 |
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180 int ObjArrayKlass::oop_size(oop obj) const { |
0 | 181 assert(obj->is_objArray(), "must be object array"); |
182 return objArrayOop(obj)->object_size(); | |
183 } | |
184 | |
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185 objArrayOop ObjArrayKlass::allocate(int length, TRAPS) { |
0 | 186 if (length >= 0) { |
187 if (length <= arrayOopDesc::max_array_length(T_OBJECT)) { | |
188 int size = objArrayOopDesc::object_size(length); | |
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189 KlassHandle h_k(THREAD, this); |
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190 return (objArrayOop)CollectedHeap::array_allocate(h_k, size, length, CHECK_NULL); |
0 | 191 } else { |
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192 report_java_out_of_memory("Requested array size exceeds VM limit"); |
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193 JvmtiExport::post_array_size_exhausted(); |
0 | 194 THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
195 } | |
196 } else { | |
197 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); | |
198 } | |
199 } | |
200 | |
201 static int multi_alloc_counter = 0; | |
202 | |
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203 oop ObjArrayKlass::multi_allocate(int rank, jint* sizes, TRAPS) { |
0 | 204 int length = *sizes; |
205 // Call to lower_dimension uses this pointer, so most be called before a | |
206 // possible GC | |
207 KlassHandle h_lower_dimension(THREAD, lower_dimension()); | |
208 // If length < 0 allocate will throw an exception. | |
209 objArrayOop array = allocate(length, CHECK_NULL); | |
210 objArrayHandle h_array (THREAD, array); | |
211 if (rank > 1) { | |
212 if (length != 0) { | |
213 for (int index = 0; index < length; index++) { | |
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214 ArrayKlass* ak = ArrayKlass::cast(h_lower_dimension()); |
0 | 215 oop sub_array = ak->multi_allocate(rank-1, &sizes[1], CHECK_NULL); |
216 h_array->obj_at_put(index, sub_array); | |
217 } | |
218 } else { | |
219 // Since this array dimension has zero length, nothing will be | |
220 // allocated, however the lower dimension values must be checked | |
221 // for illegal values. | |
222 for (int i = 0; i < rank - 1; ++i) { | |
223 sizes += 1; | |
224 if (*sizes < 0) { | |
225 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); | |
226 } | |
227 } | |
228 } | |
229 } | |
230 return h_array(); | |
231 } | |
232 | |
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233 // Either oop or narrowOop depending on UseCompressedOops. |
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234 template <class T> void ObjArrayKlass::do_copy(arrayOop s, T* src, |
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235 arrayOop d, T* dst, int length, TRAPS) { |
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236 |
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237 BarrierSet* bs = Universe::heap()->barrier_set(); |
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238 // For performance reasons, we assume we are that the write barrier we |
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239 // are using has optimized modes for arrays of references. At least one |
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240 // of the asserts below will fail if this is not the case. |
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241 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); |
342
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242 assert(bs->has_write_ref_array_pre_opt(), "For pre-barrier as well."); |
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243 |
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244 if (s == d) { |
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245 // since source and destination are equal we do not need conversion checks. |
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246 assert(length > 0, "sanity check"); |
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247 bs->write_ref_array_pre(dst, length); |
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248 Copy::conjoint_oops_atomic(src, dst, length); |
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249 } else { |
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250 // We have to make sure all elements conform to the destination array |
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251 Klass* bound = ObjArrayKlass::cast(d->klass())->element_klass(); |
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252 Klass* stype = ObjArrayKlass::cast(s->klass())->element_klass(); |
6983 | 253 if (stype == bound || stype->is_subtype_of(bound)) { |
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254 // elements are guaranteed to be subtypes, so no check necessary |
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255 bs->write_ref_array_pre(dst, length); |
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256 Copy::conjoint_oops_atomic(src, dst, length); |
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257 } else { |
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258 // slow case: need individual subtype checks |
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259 // note: don't use obj_at_put below because it includes a redundant store check |
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260 T* from = src; |
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261 T* end = from + length; |
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262 for (T* p = dst; from < end; from++, p++) { |
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263 // XXX this is going to be slow. |
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264 T element = *from; |
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265 // even slower now |
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266 bool element_is_null = oopDesc::is_null(element); |
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267 oop new_val = element_is_null ? oop(NULL) |
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268 : oopDesc::decode_heap_oop_not_null(element); |
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269 if (element_is_null || |
6983 | 270 (new_val->klass())->is_subtype_of(bound)) { |
342
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271 bs->write_ref_field_pre(p, new_val); |
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272 *p = *from; |
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273 } else { |
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274 // We must do a barrier to cover the partial copy. |
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275 const size_t pd = pointer_delta(p, dst, (size_t)heapOopSize); |
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276 // pointer delta is scaled to number of elements (length field in |
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277 // objArrayOop) which we assume is 32 bit. |
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278 assert(pd == (size_t)(int)pd, "length field overflow"); |
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279 bs->write_ref_array((HeapWord*)dst, pd); |
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280 THROW(vmSymbols::java_lang_ArrayStoreException()); |
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281 return; |
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282 } |
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283 } |
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284 } |
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285 } |
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286 bs->write_ref_array((HeapWord*)dst, length); |
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287 } |
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288 |
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289 void ObjArrayKlass::copy_array(arrayOop s, int src_pos, arrayOop d, |
0 | 290 int dst_pos, int length, TRAPS) { |
291 assert(s->is_objArray(), "must be obj array"); | |
292 | |
293 if (!d->is_objArray()) { | |
294 THROW(vmSymbols::java_lang_ArrayStoreException()); | |
295 } | |
296 | |
297 // Check is all offsets and lengths are non negative | |
298 if (src_pos < 0 || dst_pos < 0 || length < 0) { | |
299 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
300 } | |
301 // Check if the ranges are valid | |
302 if ( (((unsigned int) length + (unsigned int) src_pos) > (unsigned int) s->length()) | |
303 || (((unsigned int) length + (unsigned int) dst_pos) > (unsigned int) d->length()) ) { | |
304 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
305 } | |
306 | |
307 // Special case. Boundary cases must be checked first | |
308 // This allows the following call: copy_array(s, s.length(), d.length(), 0). | |
309 // This is correct, since the position is supposed to be an 'in between point', i.e., s.length(), | |
310 // points to the right of the last element. | |
311 if (length==0) { | |
312 return; | |
313 } | |
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314 if (UseCompressedOops) { |
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315 narrowOop* const src = objArrayOop(s)->obj_at_addr<narrowOop>(src_pos); |
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316 narrowOop* const dst = objArrayOop(d)->obj_at_addr<narrowOop>(dst_pos); |
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317 do_copy<narrowOop>(s, src, d, dst, length, CHECK); |
0 | 318 } else { |
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319 oop* const src = objArrayOop(s)->obj_at_addr<oop>(src_pos); |
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320 oop* const dst = objArrayOop(d)->obj_at_addr<oop>(dst_pos); |
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321 do_copy<oop> (s, src, d, dst, length, CHECK); |
0 | 322 } |
323 } | |
324 | |
325 | |
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326 Klass* ObjArrayKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
0 | 327 |
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328 assert(dimension() <= n, "check order of chain"); |
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329 int dim = dimension(); |
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330 if (dim == n) return this; |
0 | 331 |
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332 if (higher_dimension() == NULL) { |
0 | 333 if (or_null) return NULL; |
334 | |
335 ResourceMark rm; | |
336 JavaThread *jt = (JavaThread *)THREAD; | |
337 { | |
338 MutexLocker mc(Compile_lock, THREAD); // for vtables | |
339 // Ensure atomic creation of higher dimensions | |
340 MutexLocker mu(MultiArray_lock, THREAD); | |
341 | |
342 // Check if another thread beat us | |
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343 if (higher_dimension() == NULL) { |
0 | 344 |
345 // Create multi-dim klass object and link them together | |
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346 Klass* k = |
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347 ObjArrayKlass::allocate_objArray_klass(class_loader_data(), dim + 1, this, CHECK_NULL); |
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348 ObjArrayKlass* ak = ObjArrayKlass::cast(k); |
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349 ak->set_lower_dimension(this); |
2119 | 350 OrderAccess::storestore(); |
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351 set_higher_dimension(ak); |
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352 assert(ak->oop_is_objArray(), "incorrect initialization of ObjArrayKlass"); |
0 | 353 } |
354 } | |
355 } else { | |
356 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); | |
357 } | |
358 | |
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359 ObjArrayKlass *ak = ObjArrayKlass::cast(higher_dimension()); |
0 | 360 if (or_null) { |
361 return ak->array_klass_or_null(n); | |
362 } | |
363 return ak->array_klass(n, CHECK_NULL); | |
364 } | |
365 | |
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366 Klass* ObjArrayKlass::array_klass_impl(bool or_null, TRAPS) { |
0 | 367 return array_klass_impl(or_null, dimension() + 1, CHECK_NULL); |
368 } | |
369 | |
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370 bool ObjArrayKlass::can_be_primary_super_slow() const { |
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371 if (!bottom_klass()->can_be_primary_super()) |
0 | 372 // array of interfaces |
373 return false; | |
374 else | |
375 return Klass::can_be_primary_super_slow(); | |
376 } | |
377 | |
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378 GrowableArray<Klass*>* ObjArrayKlass::compute_secondary_supers(int num_extra_slots) { |
0 | 379 // interfaces = { cloneable_klass, serializable_klass, elemSuper[], ... }; |
6983 | 380 Array<Klass*>* elem_supers = element_klass()->secondary_supers(); |
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381 int num_elem_supers = elem_supers == NULL ? 0 : elem_supers->length(); |
0 | 382 int num_secondaries = num_extra_slots + 2 + num_elem_supers; |
383 if (num_secondaries == 2) { | |
384 // Must share this for correct bootstrapping! | |
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385 set_secondary_supers(Universe::the_array_interfaces_array()); |
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386 return NULL; |
0 | 387 } else { |
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388 GrowableArray<Klass*>* secondaries = new GrowableArray<Klass*>(num_elem_supers+2); |
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389 secondaries->push(SystemDictionary::Cloneable_klass()); |
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390 secondaries->push(SystemDictionary::Serializable_klass()); |
0 | 391 for (int i = 0; i < num_elem_supers; i++) { |
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392 Klass* elem_super = (Klass*) elem_supers->at(i); |
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393 Klass* array_super = elem_super->array_klass_or_null(); |
0 | 394 assert(array_super != NULL, "must already have been created"); |
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395 secondaries->push(array_super); |
0 | 396 } |
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397 return secondaries; |
0 | 398 } |
399 } | |
400 | |
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401 bool ObjArrayKlass::compute_is_subtype_of(Klass* k) { |
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402 if (!k->oop_is_objArray()) |
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403 return ArrayKlass::compute_is_subtype_of(k); |
0 | 404 |
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405 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
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406 return element_klass()->is_subtype_of(oak->element_klass()); |
0 | 407 } |
408 | |
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409 void ObjArrayKlass::initialize(TRAPS) { |
6983 | 410 bottom_klass()->initialize(THREAD); // dispatches to either InstanceKlass or TypeArrayKlass |
0 | 411 } |
412 | |
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413 #define ObjArrayKlass_SPECIALIZED_OOP_ITERATE(T, a, p, do_oop) \ |
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414 { \ |
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415 T* p = (T*)(a)->base(); \ |
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416 T* const end = p + (a)->length(); \ |
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417 while (p < end) { \ |
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418 do_oop; \ |
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419 p++; \ |
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420 } \ |
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421 } |
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422 |
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423 #define ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(T, a, p, low, high, do_oop) \ |
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424 { \ |
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425 T* const l = (T*)(low); \ |
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426 T* const h = (T*)(high); \ |
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427 T* p = (T*)(a)->base(); \ |
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428 T* end = p + (a)->length(); \ |
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429 if (p < l) p = l; \ |
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430 if (end > h) end = h; \ |
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431 while (p < end) { \ |
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432 do_oop; \ |
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433 ++p; \ |
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434 } \ |
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435 } |
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436 |
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437 #define ObjArrayKlass_OOP_ITERATE(a, p, do_oop) \ |
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438 if (UseCompressedOops) { \ |
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439 ObjArrayKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
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440 a, p, do_oop) \ |
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441 } else { \ |
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442 ObjArrayKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
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443 a, p, do_oop) \ |
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444 } |
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445 |
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446 #define ObjArrayKlass_BOUNDED_OOP_ITERATE(a, p, low, high, do_oop) \ |
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447 if (UseCompressedOops) { \ |
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448 ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
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449 a, p, low, high, do_oop) \ |
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450 } else { \ |
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451 ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
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452 a, p, low, high, do_oop) \ |
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453 } |
0 | 454 |
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455 void ObjArrayKlass::oop_follow_contents(oop obj) { |
0 | 456 assert (obj->is_array(), "obj must be array"); |
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457 MarkSweep::follow_klass(obj->klass()); |
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458 if (UseCompressedOops) { |
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459 objarray_follow_contents<narrowOop>(obj, 0); |
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460 } else { |
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461 objarray_follow_contents<oop>(obj, 0); |
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462 } |
0 | 463 } |
464 | |
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465 #if INCLUDE_ALL_GCS |
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466 void ObjArrayKlass::oop_follow_contents(ParCompactionManager* cm, |
0 | 467 oop obj) { |
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468 assert(obj->is_array(), "obj must be array"); |
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469 PSParallelCompact::follow_klass(cm, obj->klass()); |
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470 if (UseCompressedOops) { |
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471 objarray_follow_contents<narrowOop>(cm, obj, 0); |
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472 } else { |
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473 objarray_follow_contents<oop>(cm, obj, 0); |
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474 } |
0 | 475 } |
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476 #endif // INCLUDE_ALL_GCS |
0 | 477 |
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478 #define if_do_metadata_checked(closure, nv_suffix) \ |
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479 /* Make sure the non-virtual and the virtual versions match. */ \ |
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480 assert(closure->do_metadata##nv_suffix() == closure->do_metadata(), \ |
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481 "Inconsistency in do_metadata"); \ |
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482 if (closure->do_metadata##nv_suffix()) |
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483 |
0 | 484 #define ObjArrayKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
485 \ | |
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486 int ObjArrayKlass::oop_oop_iterate##nv_suffix(oop obj, \ |
0 | 487 OopClosureType* closure) { \ |
488 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::oa); \ | |
489 assert (obj->is_array(), "obj must be array"); \ | |
490 objArrayOop a = objArrayOop(obj); \ | |
491 /* Get size before changing pointers. */ \ | |
492 /* Don't call size() or oop_size() since that is a virtual call. */ \ | |
493 int size = a->object_size(); \ | |
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494 if_do_metadata_checked(closure, nv_suffix) { \ |
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495 closure->do_klass##nv_suffix(obj->klass()); \ |
0 | 496 } \ |
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497 ObjArrayKlass_OOP_ITERATE(a, p, (closure)->do_oop##nv_suffix(p)) \ |
0 | 498 return size; \ |
499 } | |
500 | |
501 #define ObjArrayKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ | |
502 \ | |
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503 int ObjArrayKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ |
0 | 504 OopClosureType* closure, \ |
505 MemRegion mr) { \ | |
506 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::oa); \ | |
507 assert(obj->is_array(), "obj must be array"); \ | |
508 objArrayOop a = objArrayOop(obj); \ | |
509 /* Get size before changing pointers. */ \ | |
510 /* Don't call size() or oop_size() since that is a virtual call */ \ | |
511 int size = a->object_size(); \ | |
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512 if_do_metadata_checked(closure, nv_suffix) { \ |
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513 /* SSS: Do we need to pass down mr here? */ \ |
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514 closure->do_klass##nv_suffix(a->klass()); \ |
0 | 515 } \ |
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516 ObjArrayKlass_BOUNDED_OOP_ITERATE( \ |
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517 a, p, mr.start(), mr.end(), (closure)->do_oop##nv_suffix(p)) \ |
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518 return size; \ |
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519 } |
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520 |
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521 // Like oop_oop_iterate but only iterates over a specified range and only used |
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522 // for objArrayOops. |
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523 #define ObjArrayKlass_OOP_OOP_ITERATE_DEFN_r(OopClosureType, nv_suffix) \ |
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524 \ |
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525 int ObjArrayKlass::oop_oop_iterate_range##nv_suffix(oop obj, \ |
113
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526 OopClosureType* closure, \ |
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527 int start, int end) { \ |
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528 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::oa); \ |
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529 assert(obj->is_array(), "obj must be array"); \ |
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530 objArrayOop a = objArrayOop(obj); \ |
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531 /* Get size before changing pointers. */ \ |
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532 /* Don't call size() or oop_size() since that is a virtual call */ \ |
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533 int size = a->object_size(); \ |
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534 if (UseCompressedOops) { \ |
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535 HeapWord* low = start == 0 ? (HeapWord*)a : (HeapWord*)a->obj_at_addr<narrowOop>(start);\ |
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536 /* this might be wierd if end needs to be aligned on HeapWord boundary */ \ |
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537 HeapWord* high = (HeapWord*)((narrowOop*)a->base() + end); \ |
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538 MemRegion mr(low, high); \ |
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539 if_do_metadata_checked(closure, nv_suffix) { \ |
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540 /* SSS: Do we need to pass down mr here? */ \ |
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541 closure->do_klass##nv_suffix(a->klass()); \ |
0 | 542 } \ |
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543 ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
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544 a, p, low, high, (closure)->do_oop##nv_suffix(p)) \ |
0 | 545 } else { \ |
113
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546 HeapWord* low = start == 0 ? (HeapWord*)a : (HeapWord*)a->obj_at_addr<oop>(start); \ |
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547 HeapWord* high = (HeapWord*)((oop*)a->base() + end); \ |
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548 MemRegion mr(low, high); \ |
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549 if_do_metadata_checked(closure, nv_suffix) { \ |
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550 /* SSS: Do we need to pass down mr here? */ \ |
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551 closure->do_klass##nv_suffix(a->klass()); \ |
0 | 552 } \ |
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553 ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
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554 a, p, low, high, (closure)->do_oop##nv_suffix(p)) \ |
0 | 555 } \ |
556 return size; \ | |
557 } | |
558 | |
559 ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DEFN) | |
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560 ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayKlass_OOP_OOP_ITERATE_DEFN) |
0 | 561 ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DEFN_m) |
342
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562 ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayKlass_OOP_OOP_ITERATE_DEFN_m) |
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563 ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DEFN_r) |
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564 ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayKlass_OOP_OOP_ITERATE_DEFN_r) |
0 | 565 |
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566 int ObjArrayKlass::oop_adjust_pointers(oop obj) { |
0 | 567 assert(obj->is_objArray(), "obj must be obj array"); |
568 objArrayOop a = objArrayOop(obj); | |
569 // Get size before changing pointers. | |
570 // Don't call size() or oop_size() since that is a virtual call. | |
571 int size = a->object_size(); | |
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572 ObjArrayKlass_OOP_ITERATE(a, p, MarkSweep::adjust_pointer(p)) |
0 | 573 return size; |
574 } | |
575 | |
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576 #if INCLUDE_ALL_GCS |
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577 void ObjArrayKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
0 | 578 assert(obj->is_objArray(), "obj must be obj array"); |
113
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579 ObjArrayKlass_OOP_ITERATE( \ |
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580 objArrayOop(obj), p, \ |
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581 if (PSScavenge::should_scavenge(p)) { \ |
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582 pm->claim_or_forward_depth(p); \ |
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583 }) |
0 | 584 } |
585 | |
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586 int ObjArrayKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
0 | 587 assert (obj->is_objArray(), "obj must be obj array"); |
588 objArrayOop a = objArrayOop(obj); | |
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589 int size = a->object_size(); |
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590 ObjArrayKlass_OOP_ITERATE(a, p, PSParallelCompact::adjust_pointer(p)) |
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591 return size; |
0 | 592 } |
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593 #endif // INCLUDE_ALL_GCS |
0 | 594 |
595 // JVM support | |
596 | |
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597 jint ObjArrayKlass::compute_modifier_flags(TRAPS) const { |
0 | 598 // The modifier for an objectArray is the same as its element |
599 if (element_klass() == NULL) { | |
600 assert(Universe::is_bootstrapping(), "partial objArray only at startup"); | |
601 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
602 } | |
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603 // Return the flags of the bottom element type. |
6983 | 604 jint element_flags = bottom_klass()->compute_modifier_flags(CHECK_0); |
0 | 605 |
606 return (element_flags & (JVM_ACC_PUBLIC | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED)) | |
607 | (JVM_ACC_ABSTRACT | JVM_ACC_FINAL); | |
608 } | |
609 | |
610 | |
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611 // Printing |
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612 |
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613 void ObjArrayKlass::print_on(outputStream* st) const { |
0 | 614 #ifndef PRODUCT |
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615 Klass::print_on(st); |
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616 st->print(" - instance klass: "); |
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617 element_klass()->print_value_on(st); |
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618 st->cr(); |
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619 #endif //PRODUCT |
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620 } |
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621 |
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622 void ObjArrayKlass::print_value_on(outputStream* st) const { |
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623 assert(is_klass(), "must be klass"); |
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624 |
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625 element_klass()->print_value_on(st); |
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626 st->print("[]"); |
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627 } |
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628 |
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629 #ifndef PRODUCT |
0 | 630 |
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631 void ObjArrayKlass::oop_print_on(oop obj, outputStream* st) { |
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632 ArrayKlass::oop_print_on(obj, st); |
0 | 633 assert(obj->is_objArray(), "must be objArray"); |
634 objArrayOop oa = objArrayOop(obj); | |
635 int print_len = MIN2((intx) oa->length(), MaxElementPrintSize); | |
636 for(int index = 0; index < print_len; index++) { | |
637 st->print(" - %3d : ", index); | |
638 oa->obj_at(index)->print_value_on(st); | |
639 st->cr(); | |
640 } | |
641 int remaining = oa->length() - print_len; | |
642 if (remaining > 0) { | |
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643 st->print_cr(" - <%d more elements, increase MaxElementPrintSize to print>", remaining); |
0 | 644 } |
645 } | |
646 | |
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647 #endif //PRODUCT |
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648 |
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649 static int max_objArray_print_length = 4; |
0 | 650 |
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651 void ObjArrayKlass::oop_print_value_on(oop obj, outputStream* st) { |
0 | 652 assert(obj->is_objArray(), "must be objArray"); |
665
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653 st->print("a "); |
0 | 654 element_klass()->print_value_on(st); |
665
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655 int len = objArrayOop(obj)->length(); |
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656 st->print("[%d] ", len); |
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657 obj->print_address_on(st); |
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658 if (NOT_PRODUCT(PrintOopAddress ||) PrintMiscellaneous && (WizardMode || Verbose)) { |
665
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659 st->print("{"); |
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660 for (int i = 0; i < len; i++) { |
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661 if (i > max_objArray_print_length) { |
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662 st->print("..."); break; |
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663 } |
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664 st->print(" "INTPTR_FORMAT, (intptr_t)(void*)objArrayOop(obj)->obj_at(i)); |
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665 } |
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666 st->print(" }"); |
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667 } |
0 | 668 } |
669 | |
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670 const char* ObjArrayKlass::internal_name() const { |
0 | 671 return external_name(); |
672 } | |
673 | |
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674 |
0 | 675 // Verification |
676 | |
11034 | 677 void ObjArrayKlass::verify_on(outputStream* st, bool check_dictionary) { |
678 ArrayKlass::verify_on(st, check_dictionary); | |
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679 guarantee(element_klass()->is_klass(), "should be klass"); |
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680 guarantee(bottom_klass()->is_klass(), "should be klass"); |
6983 | 681 Klass* bk = bottom_klass(); |
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682 guarantee(bk->oop_is_instance() || bk->oop_is_typeArray(), "invalid bottom klass"); |
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683 } |
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684 |
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685 void ObjArrayKlass::oop_verify_on(oop obj, outputStream* st) { |
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686 ArrayKlass::oop_verify_on(obj, st); |
0 | 687 guarantee(obj->is_objArray(), "must be objArray"); |
688 objArrayOop oa = objArrayOop(obj); | |
689 for(int index = 0; index < oa->length(); index++) { | |
690 guarantee(oa->obj_at(index)->is_oop_or_null(), "should be oop"); | |
691 } | |
692 } |