author | jiangli |
Sun, 08 Jul 2018 12:43:05 -0400 | |
changeset 50951 | b96466cdfc45 |
child 51371 | 3ab8b84e93cd |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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|
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#include "precompiled.hpp" |
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#include "classfile/javaClasses.inline.hpp" |
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#include "classfile/vmSymbols.hpp" |
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#include "logging/log.hpp" |
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#include "logging/logMessage.hpp" |
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#include "logging/logStream.hpp" |
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#include "memory/heapShared.hpp" |
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#include "memory/iterator.inline.hpp" |
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#include "memory/metadataFactory.hpp" |
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#include "memory/metaspaceClosure.hpp" |
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#include "memory/metaspaceShared.hpp" |
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#include "memory/resourceArea.hpp" |
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#include "oops/compressedOops.inline.hpp" |
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#include "oops/oop.inline.hpp" |
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#if INCLUDE_CDS_JAVA_HEAP |
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KlassSubGraphInfo* HeapShared::_subgraph_info_list = NULL; |
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int HeapShared::_num_archived_subgraph_info_records = 0; |
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Array<ArchivedKlassSubGraphInfoRecord>* HeapShared::_archived_subgraph_info_records = NULL; |
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|
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// Currently there is only one class mirror (ArchivedModuleGraph) with archived |
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// sub-graphs. |
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KlassSubGraphInfo* HeapShared::find_subgraph_info(Klass* k) { |
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KlassSubGraphInfo* info = _subgraph_info_list; |
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while (info != NULL) { |
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if (info->klass() == k) { |
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return info; |
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} |
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info = info->next(); |
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} |
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return NULL; |
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} |
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// Get the subgraph_info for Klass k. A new subgraph_info is created if |
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// there is no existing one for k. The subgraph_info records the relocated |
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// Klass* of the original k. |
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KlassSubGraphInfo* HeapShared::get_subgraph_info(Klass* k) { |
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Klass* relocated_k = MetaspaceShared::get_relocated_klass(k); |
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KlassSubGraphInfo* info = find_subgraph_info(relocated_k); |
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if (info != NULL) { |
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return info; |
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} |
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info = new KlassSubGraphInfo(relocated_k, _subgraph_info_list); |
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_subgraph_info_list = info; |
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return info; |
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} |
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int HeapShared::num_of_subgraph_infos() { |
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int num = 0; |
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KlassSubGraphInfo* info = _subgraph_info_list; |
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while (info != NULL) { |
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num ++; |
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info = info->next(); |
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} |
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return num; |
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} |
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// Add an entry field to the current KlassSubGraphInfo. |
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void KlassSubGraphInfo::add_subgraph_entry_field(int static_field_offset, oop v) { |
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assert(DumpSharedSpaces, "dump time only"); |
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if (_subgraph_entry_fields == NULL) { |
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_subgraph_entry_fields = |
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new(ResourceObj::C_HEAP, mtClass) GrowableArray<juint>(10, true); |
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} |
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_subgraph_entry_fields->append((juint)static_field_offset); |
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_subgraph_entry_fields->append(CompressedOops::encode(v)); |
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} |
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// Add the Klass* for an object in the current KlassSubGraphInfo's subgraphs. |
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// Only objects of boot classes can be included in sub-graph. |
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void KlassSubGraphInfo::add_subgraph_object_klass(Klass* orig_k, Klass *relocated_k) { |
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assert(DumpSharedSpaces, "dump time only"); |
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assert(relocated_k == MetaspaceShared::get_relocated_klass(orig_k), |
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"must be the relocated Klass in the shared space"); |
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|
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if (_subgraph_object_klasses == NULL) { |
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_subgraph_object_klasses = |
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new(ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(50, true); |
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} |
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|
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assert(relocated_k->is_shared(), "must be a shared class"); |
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if (relocated_k->is_instance_klass()) { |
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assert(InstanceKlass::cast(relocated_k)->is_shared_boot_class(), |
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"must be boot class"); |
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// SystemDictionary::xxx_klass() are not updated, need to check |
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// the original Klass* |
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if (orig_k == SystemDictionary::String_klass() || |
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orig_k == SystemDictionary::Object_klass()) { |
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// Initialized early during VM initialization. No need to be added |
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// to the sub-graph object class list. |
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return; |
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117 |
} |
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118 |
} else if (relocated_k->is_objArray_klass()) { |
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119 |
Klass* abk = ObjArrayKlass::cast(relocated_k)->bottom_klass(); |
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120 |
if (abk->is_instance_klass()) { |
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121 |
assert(InstanceKlass::cast(abk)->is_shared_boot_class(), |
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122 |
"must be boot class"); |
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123 |
} |
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124 |
if (relocated_k == Universe::objectArrayKlassObj()) { |
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125 |
// Initialized early during Universe::genesis. No need to be added |
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126 |
// to the list. |
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127 |
return; |
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128 |
} |
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129 |
} else { |
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130 |
assert(relocated_k->is_typeArray_klass(), "must be"); |
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131 |
// Primitive type arrays are created early during Universe::genesis. |
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132 |
return; |
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133 |
} |
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134 |
|
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135 |
_subgraph_object_klasses->append_if_missing(relocated_k); |
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136 |
} |
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137 |
|
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// Initialize an archived subgraph_info_record from the given KlassSubGraphInfo. |
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void ArchivedKlassSubGraphInfoRecord::init(KlassSubGraphInfo* info) { |
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_k = info->klass(); |
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_next = NULL; |
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142 |
_entry_field_records = NULL; |
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143 |
_subgraph_klasses = NULL; |
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144 |
|
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145 |
// populate the entry fields |
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146 |
GrowableArray<juint>* entry_fields = info->subgraph_entry_fields(); |
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147 |
if (entry_fields != NULL) { |
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int num_entry_fields = entry_fields->length(); |
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149 |
assert(num_entry_fields % 2 == 0, "sanity"); |
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150 |
_entry_field_records = |
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151 |
MetaspaceShared::new_ro_array<juint>(num_entry_fields); |
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152 |
for (int i = 0 ; i < num_entry_fields; i++) { |
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153 |
_entry_field_records->at_put(i, entry_fields->at(i)); |
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154 |
} |
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155 |
} |
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156 |
|
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157 |
// the Klasses of the objects in the sub-graphs |
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158 |
GrowableArray<Klass*>* subgraph_klasses = info->subgraph_object_klasses(); |
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159 |
if (subgraph_klasses != NULL) { |
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160 |
int num_subgraphs_klasses = subgraph_klasses->length(); |
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161 |
_subgraph_klasses = |
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162 |
MetaspaceShared::new_ro_array<Klass*>(num_subgraphs_klasses); |
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163 |
for (int i = 0; i < num_subgraphs_klasses; i++) { |
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164 |
Klass* subgraph_k = subgraph_klasses->at(i); |
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165 |
if (log_is_enabled(Info, cds, heap)) { |
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166 |
ResourceMark rm; |
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167 |
log_info(cds, heap)( |
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168 |
"Archived object klass (%d): %s in %s sub-graphs", |
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|
169 |
i, subgraph_k->external_name(), _k->external_name()); |
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170 |
} |
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171 |
_subgraph_klasses->at_put(i, subgraph_k); |
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|
172 |
} |
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|
173 |
} |
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|
174 |
} |
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|
175 |
|
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176 |
// Build the records of archived subgraph infos, which include: |
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177 |
// - Entry points to all subgraphs from the containing class mirror. The entry |
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178 |
// points are static fields in the mirror. For each entry point, the field |
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179 |
// offset and value are recorded in the sub-graph info. The value are stored |
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180 |
// back to the corresponding field at runtime. |
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181 |
// - A list of klasses that need to be loaded/initialized before archived |
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182 |
// java object sub-graph can be accessed at runtime. |
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183 |
// |
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184 |
// The records are saved in the archive file and reloaded at runtime. Currently |
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|
185 |
// there is only one class mirror (ArchivedModuleGraph) with archived sub-graphs. |
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|
186 |
// |
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187 |
// Layout of the archived subgraph info records: |
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188 |
// |
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189 |
// records_size | num_records | records* |
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190 |
// ArchivedKlassSubGraphInfoRecord | entry_fields | subgraph_object_klasses |
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|
191 |
size_t HeapShared::build_archived_subgraph_info_records(int num_records) { |
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192 |
// remember the start address |
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|
193 |
char* start_p = MetaspaceShared::read_only_space_top(); |
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|
194 |
|
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|
195 |
// now populate the archived subgraph infos, which will be saved in the |
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|
196 |
// archive file |
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|
197 |
_archived_subgraph_info_records = |
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|
198 |
MetaspaceShared::new_ro_array<ArchivedKlassSubGraphInfoRecord>(num_records); |
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|
199 |
KlassSubGraphInfo* info = _subgraph_info_list; |
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|
200 |
int i = 0; |
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|
201 |
while (info != NULL) { |
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|
202 |
assert(i < _archived_subgraph_info_records->length(), "sanity"); |
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|
203 |
ArchivedKlassSubGraphInfoRecord* record = |
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|
204 |
_archived_subgraph_info_records->adr_at(i); |
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|
205 |
record->init(info); |
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|
206 |
info = info->next(); |
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|
207 |
i ++; |
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|
208 |
} |
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|
209 |
|
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|
210 |
// _subgraph_info_list is no longer needed |
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|
211 |
delete _subgraph_info_list; |
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|
212 |
_subgraph_info_list = NULL; |
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|
213 |
|
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|
214 |
char* end_p = MetaspaceShared::read_only_space_top(); |
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|
215 |
size_t records_size = end_p - start_p; |
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|
216 |
return records_size; |
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|
217 |
} |
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|
218 |
|
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|
219 |
// Write the subgraph info records in the shared _ro region |
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|
220 |
void HeapShared::write_archived_subgraph_infos() { |
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|
221 |
assert(DumpSharedSpaces, "dump time only"); |
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|
222 |
|
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|
223 |
Array<intptr_t>* records_header = MetaspaceShared::new_ro_array<intptr_t>(3); |
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|
224 |
|
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|
225 |
_num_archived_subgraph_info_records = num_of_subgraph_infos(); |
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|
226 |
size_t records_size = build_archived_subgraph_info_records( |
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227 |
_num_archived_subgraph_info_records); |
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|
228 |
|
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229 |
// Now write the header information: |
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|
230 |
// records_size, num_records, _archived_subgraph_info_records |
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|
231 |
assert(records_header != NULL, "sanity"); |
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|
232 |
intptr_t* p = (intptr_t*)(records_header->data()); |
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233 |
*p = (intptr_t)records_size; |
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234 |
p ++; |
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|
235 |
*p = (intptr_t)_num_archived_subgraph_info_records; |
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|
236 |
p ++; |
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|
237 |
*p = (intptr_t)_archived_subgraph_info_records; |
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238 |
} |
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|
239 |
|
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|
240 |
char* HeapShared::read_archived_subgraph_infos(char* buffer) { |
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|
241 |
Array<intptr_t>* records_header = (Array<intptr_t>*)buffer; |
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|
242 |
intptr_t* p = (intptr_t*)(records_header->data()); |
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|
243 |
size_t records_size = (size_t)(*p); |
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|
244 |
p ++; |
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|
245 |
_num_archived_subgraph_info_records = *p; |
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|
246 |
p ++; |
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247 |
_archived_subgraph_info_records = |
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248 |
(Array<ArchivedKlassSubGraphInfoRecord>*)(*p); |
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|
249 |
|
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|
250 |
buffer = (char*)_archived_subgraph_info_records + records_size; |
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|
251 |
return buffer; |
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|
252 |
} |
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|
253 |
|
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|
254 |
void HeapShared::initialize_from_archived_subgraph(Klass* k) { |
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255 |
if (!MetaspaceShared::open_archive_heap_region_mapped()) { |
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|
256 |
return; // nothing to do |
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|
257 |
} |
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|
258 |
|
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|
259 |
if (_num_archived_subgraph_info_records == 0) { |
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|
260 |
return; // no subgraph info records |
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|
261 |
} |
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|
262 |
|
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|
263 |
// Initialize from archived data. Currently only ArchivedModuleGraph |
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|
264 |
// has archived object subgraphs, which is used during VM initialization |
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|
265 |
// time when bootstraping the system modules. No lock is needed. |
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|
266 |
Thread* THREAD = Thread::current(); |
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|
267 |
for (int i = 0; i < _archived_subgraph_info_records->length(); i++) { |
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|
268 |
ArchivedKlassSubGraphInfoRecord* record = _archived_subgraph_info_records->adr_at(i); |
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|
269 |
if (record->klass() == k) { |
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|
270 |
int i; |
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|
271 |
// Found the archived subgraph info record for the requesting klass. |
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|
272 |
// Load/link/initialize the klasses of the objects in the subgraph. |
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|
273 |
// NULL class loader is used. |
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|
274 |
Array<Klass*>* klasses = record->subgraph_klasses(); |
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|
275 |
if (klasses != NULL) { |
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|
276 |
for (i = 0; i < klasses->length(); i++) { |
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|
277 |
Klass* obj_k = klasses->at(i); |
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|
278 |
Klass* resolved_k = SystemDictionary::resolve_or_null( |
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|
279 |
(obj_k)->name(), THREAD); |
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|
280 |
if (resolved_k != obj_k) { |
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|
281 |
return; |
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|
282 |
} |
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|
283 |
if ((obj_k)->is_instance_klass()) { |
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|
284 |
InstanceKlass* ik = InstanceKlass::cast(obj_k); |
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|
285 |
ik->initialize(THREAD); |
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|
286 |
} else if ((obj_k)->is_objArray_klass()) { |
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|
287 |
ObjArrayKlass* oak = ObjArrayKlass::cast(obj_k); |
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|
288 |
oak->initialize(THREAD); |
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changeset
|
289 |
} |
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jiangli
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diff
changeset
|
290 |
} |
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jiangli
parents:
diff
changeset
|
291 |
} |
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parents:
diff
changeset
|
292 |
|
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|
293 |
if (HAS_PENDING_EXCEPTION) { |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
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|
294 |
CLEAR_PENDING_EXCEPTION; |
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8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
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|
295 |
// None of the field value will be set if there was an exception. |
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8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
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|
296 |
// The java code will not see any of the archived objects in the |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
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|
297 |
// subgraphs referenced from k in this case. |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
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diff
changeset
|
298 |
return; |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
299 |
} |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
300 |
|
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
301 |
// Load the subgraph entry fields from the record and store them back to |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
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|
302 |
// the corresponding fields within the mirror. |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
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parents:
diff
changeset
|
303 |
oop m = k->java_mirror(); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
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diff
changeset
|
304 |
Array<juint>* entry_field_records = record->entry_field_records(); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
305 |
if (entry_field_records != NULL) { |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
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diff
changeset
|
306 |
int efr_len = entry_field_records->length(); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
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diff
changeset
|
307 |
assert(efr_len % 2 == 0, "sanity"); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
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diff
changeset
|
308 |
for (i = 0; i < efr_len;) { |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
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diff
changeset
|
309 |
int field_offset = entry_field_records->at(i); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
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diff
changeset
|
310 |
// The object refereced by the field becomes 'known' by GC from this |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
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diff
changeset
|
311 |
// point. All objects in the subgraph reachable from the object are |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
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|
312 |
// also 'known' by GC. |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
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|
313 |
oop v = MetaspaceShared::materialize_archived_object( |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
314 |
CompressedOops::decode(entry_field_records->at(i+1))); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
315 |
m->obj_field_put(field_offset, v); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
316 |
i += 2; |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
317 |
} |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
318 |
} |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
319 |
|
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
320 |
// Done. Java code can see the archived sub-graphs referenced from k's |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
321 |
// mirror after this point. |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
322 |
return; |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
323 |
} |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
324 |
} |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
325 |
} |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
326 |
|
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
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diff
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|
327 |
class WalkOopAndArchiveClosure: public BasicOopIterateClosure { |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
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|
328 |
int _level; |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
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diff
changeset
|
329 |
KlassSubGraphInfo* _subgraph_info; |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
330 |
oop _orig_referencing_obj; |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
331 |
oop _archived_referencing_obj; |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
332 |
public: |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
333 |
WalkOopAndArchiveClosure(int level, KlassSubGraphInfo* subgraph_info, |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
334 |
oop orig, oop archived) : _level(level), |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
335 |
_subgraph_info(subgraph_info), |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
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diff
changeset
|
336 |
_orig_referencing_obj(orig), |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
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diff
changeset
|
337 |
_archived_referencing_obj(archived) {} |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
338 |
void do_oop(narrowOop *p) { WalkOopAndArchiveClosure::do_oop_work(p); } |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
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diff
changeset
|
339 |
void do_oop( oop *p) { WalkOopAndArchiveClosure::do_oop_work(p); } |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
340 |
|
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
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diff
changeset
|
341 |
protected: |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
342 |
template <class T> void do_oop_work(T *p) { |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
343 |
oop obj = RawAccess<>::oop_load(p); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
344 |
if (!CompressedOops::is_null(obj)) { |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
345 |
// A java.lang.Class instance can not be included in an archived |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
346 |
// object sub-graph. |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
347 |
if (java_lang_Class::is_instance(obj)) { |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
348 |
tty->print("Unknown java.lang.Class object is in the archived sub-graph\n"); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
349 |
vm_exit(1); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
350 |
} |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
351 |
|
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
352 |
LogTarget(Debug, cds, heap) log; |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
353 |
LogStream ls(log); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
354 |
outputStream* out = &ls; |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
355 |
{ |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
356 |
ResourceMark rm; |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
357 |
log.print("(%d) %s <--- referenced from: %s", |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
358 |
_level, obj->klass()->external_name(), |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
359 |
CompressedOops::is_null(_orig_referencing_obj) ? |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
360 |
"" : _orig_referencing_obj->klass()->external_name()); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
361 |
obj->print_on(out); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
362 |
} |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
363 |
|
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
364 |
if (MetaspaceShared::is_archive_object(obj)) { |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
365 |
// The current oop is an archived oop, nothing needs to be done |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
366 |
log.print("--- object is already archived ---"); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
367 |
return; |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
368 |
} |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
369 |
|
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
370 |
size_t field_delta = pointer_delta( |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
371 |
p, _orig_referencing_obj, sizeof(char)); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
372 |
T* new_p = (T*)(address(_archived_referencing_obj) + field_delta); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
373 |
oop archived = MetaspaceShared::find_archived_heap_object(obj); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
374 |
if (archived != NULL) { |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
375 |
// There is an archived copy existing, update reference to point |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
376 |
// to the archived copy |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
377 |
RawAccess<IS_NOT_NULL>::oop_store(new_p, archived); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
378 |
log.print( |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
379 |
"--- found existing archived copy, store archived " PTR_FORMAT " in " PTR_FORMAT, |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
380 |
p2i(archived), p2i(new_p)); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
381 |
return; |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
382 |
} |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
383 |
|
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
384 |
int l = _level + 1; |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
385 |
Thread* THREAD = Thread::current(); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
386 |
// Archive the current oop before iterating through its references |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
387 |
archived = MetaspaceShared::archive_heap_object(obj, THREAD); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
388 |
assert(MetaspaceShared::is_archive_object(archived), "must be archived"); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
389 |
log.print("=== archiving oop " PTR_FORMAT " ==> " PTR_FORMAT, |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
390 |
p2i(obj), p2i(archived)); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
391 |
|
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
392 |
// Following the references in the current oop and archive any |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
393 |
// encountered objects during the process |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
394 |
WalkOopAndArchiveClosure walker(l, _subgraph_info, obj, archived); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
395 |
obj->oop_iterate(&walker); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
396 |
|
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
397 |
// Update the reference in the archived copy of the referencing object |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
398 |
RawAccess<IS_NOT_NULL>::oop_store(new_p, archived); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
399 |
log.print("=== store archived " PTR_FORMAT " in " PTR_FORMAT, |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
400 |
p2i(archived), p2i(new_p)); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
401 |
|
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
402 |
// Add the klass to the list of classes that need to be loaded before |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
403 |
// module system initialization |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
404 |
Klass *orig_k = obj->klass(); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
405 |
Klass *relocated_k = archived->klass(); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
406 |
_subgraph_info->add_subgraph_object_klass(orig_k, relocated_k); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
407 |
} |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
408 |
} |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
409 |
}; |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
410 |
|
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
411 |
// |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
412 |
// Start from the given static field in a java mirror and archive the |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
413 |
// complete sub-graph of java heap objects that are reached directly |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
414 |
// or indirectly from the starting object by following references. |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
415 |
// Currently, only ArchivedModuleGraph class instance (mirror) has archived |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
416 |
// object subgraphs. Sub-graph archiving restrictions (current): |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
417 |
// |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
418 |
// - All classes of objects in the archived sub-graph (including the |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
419 |
// entry class) must be boot class only. |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
420 |
// - No java.lang.Class instance (java mirror) can be included inside |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
421 |
// an archived sub-graph. Mirror can only be the sub-graph entry object. |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
422 |
// |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
423 |
// The Java heap object sub-graph archiving process (see |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
424 |
// WalkOopAndArchiveClosure): |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
425 |
// |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
426 |
// 1) Java object sub-graph archiving starts from a given static field |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
427 |
// within a Class instance (java mirror). If the static field is a |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
428 |
// refererence field and points to a non-null java object, proceed to |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
429 |
// the next step. |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
430 |
// |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
431 |
// 2) Archives the referenced java object. If an archived copy of the |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
432 |
// current object already exists, updates the pointer in the archived |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
433 |
// copy of the referencing object to point to the current archived object. |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
434 |
// Otherwise, proceed to the next step. |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
435 |
// |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
436 |
// 3) Follows all references within the current java object and recursively |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
437 |
// archive the sub-graph of objects starting from each reference. |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
438 |
// |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
439 |
// 4) Updates the pointer in the archived copy of referencing object to |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
440 |
// point to the current archived object. |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
441 |
// |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
442 |
// 5) The Klass of the current java object is added to the list of Klasses |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
443 |
// for loading and initialzing before any object in the archived graph can |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
444 |
// be accessed at runtime. |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
445 |
// |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
446 |
void HeapShared::archive_reachable_objects_from_static_field(Klass *k, |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
447 |
int field_offset, |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
448 |
BasicType field_type, |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
449 |
TRAPS) { |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
450 |
assert(DumpSharedSpaces, "dump time only"); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
451 |
assert(k->is_instance_klass(), "sanity"); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
452 |
assert(InstanceKlass::cast(k)->is_shared_boot_class(), |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
453 |
"must be boot class"); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
454 |
|
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
455 |
oop m = k->java_mirror(); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
456 |
oop archived_m = MetaspaceShared::find_archived_heap_object(m); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
457 |
if (CompressedOops::is_null(archived_m)) { |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
458 |
return; |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
459 |
} |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
460 |
|
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
461 |
if (field_type == T_OBJECT) { |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
462 |
// obtain k's subGraph Info |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
463 |
KlassSubGraphInfo* subgraph_info = get_subgraph_info(k); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
464 |
|
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
465 |
// get the object referenced by the field |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
466 |
oop f = m->obj_field(field_offset); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
467 |
if (!CompressedOops::is_null(f)) { |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
468 |
LogTarget(Debug, cds, heap) log; |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
469 |
LogStream ls(log); |
b96466cdfc45
8202035: Archive the set of ModuleDescriptor and ModuleReference objects for observable system modules with unnamed initial module.
jiangli
parents:
diff
changeset
|
470 |
outputStream* out = &ls; |
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471 |
log.print("Start from: "); |
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472 |
f->print_on(out); |
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473 |
|
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474 |
// get the archived copy of the field referenced object |
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475 |
oop af = MetaspaceShared::archive_heap_object(f, THREAD); |
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476 |
if (!MetaspaceShared::is_archive_object(f)) { |
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477 |
WalkOopAndArchiveClosure walker(1, subgraph_info, f, af); |
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478 |
f->oop_iterate(&walker); |
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|
479 |
} |
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|
480 |
|
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481 |
// The field value is not preserved in the archived mirror. |
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482 |
// Record the field as a new subGraph entry point. The recorded |
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483 |
// information is restored from the archive at runtime. |
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484 |
subgraph_info->add_subgraph_entry_field(field_offset, af); |
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485 |
Klass *relocated_k = af->klass(); |
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486 |
Klass *orig_k = f->klass(); |
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487 |
subgraph_info->add_subgraph_object_klass(orig_k, relocated_k); |
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|
488 |
} else { |
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|
489 |
// The field contains null, we still need to record the entry point, |
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490 |
// so it can be restored at runtime. |
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491 |
subgraph_info->add_subgraph_entry_field(field_offset, NULL); |
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|
492 |
} |
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493 |
} else { |
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|
494 |
ShouldNotReachHere(); |
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|
495 |
} |
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|
496 |
} |
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|
497 |
|
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498 |
#define do_module_object_graph(archive_object_graph_do) \ |
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499 |
archive_object_graph_do(SystemDictionary::ArchivedModuleGraph_klass(), jdk_internal_module_ArchivedModuleGraph::archivedSystemModules_offset(), T_OBJECT, CHECK); \ |
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500 |
archive_object_graph_do(SystemDictionary::ArchivedModuleGraph_klass(), jdk_internal_module_ArchivedModuleGraph::archivedModuleFinder_offset(), T_OBJECT, CHECK); \ |
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501 |
archive_object_graph_do(SystemDictionary::ArchivedModuleGraph_klass(), jdk_internal_module_ArchivedModuleGraph::archivedMainModule_offset(), T_OBJECT, CHECK) |
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|
502 |
|
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503 |
void HeapShared::archive_module_graph_objects(Thread* THREAD) { |
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504 |
do_module_object_graph(archive_reachable_objects_from_static_field); |
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|
505 |
} |
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506 |
#endif // INCLUDE_CDS_JAVA_HEAP |