Mercurial > hg > graal-jvmci-8
annotate src/share/vm/classfile/dictionary.cpp @ 20197:ce8f6bb717c9
8042195: Introduce umbrella header orderAccess.inline.hpp.
Reviewed-by: dholmes, kvn, stefank, twisti
| author | goetz |
|---|---|
| date | Tue, 29 Apr 2014 15:17:27 +0200 |
| parents | 78bbf4d43a14 |
| children | 2c6ef90f030a |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
17674
85318d1fe8fe
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
coleenp
parents:
12840
diff
changeset
|
2 * Copyright (c) 2003, 2014, 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1513
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1513
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1513
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/dictionary.hpp" | |
| 27 #include "classfile/systemDictionary.hpp" | |
| 12837 | 28 #include "memory/iterator.hpp" |
| 1972 | 29 #include "oops/oop.inline.hpp" |
| 30 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
|
20197
ce8f6bb717c9
8042195: Introduce umbrella header orderAccess.inline.hpp.
goetz
parents:
17937
diff
changeset
|
31 #include "runtime/orderAccess.inline.hpp" |
| 1972 | 32 #include "utilities/hashtable.inline.hpp" |
| 0 | 33 |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17674
diff
changeset
|
34 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
| 0 | 35 |
| 36 DictionaryEntry* Dictionary::_current_class_entry = NULL; | |
| 37 int Dictionary::_current_class_index = 0; | |
| 38 | |
| 39 | |
| 40 Dictionary::Dictionary(int table_size) | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
41 : TwoOopHashtable<Klass*, mtClass>(table_size, sizeof(DictionaryEntry)) { |
| 0 | 42 _current_class_index = 0; |
| 43 _current_class_entry = NULL; | |
| 12837 | 44 _pd_cache_table = new ProtectionDomainCacheTable(defaultProtectionDomainCacheSize); |
| 0 | 45 }; |
| 46 | |
| 47 | |
| 6197 | 48 Dictionary::Dictionary(int table_size, HashtableBucket<mtClass>* t, |
| 0 | 49 int number_of_entries) |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
50 : TwoOopHashtable<Klass*, mtClass>(table_size, sizeof(DictionaryEntry), t, number_of_entries) { |
| 0 | 51 _current_class_index = 0; |
| 52 _current_class_entry = NULL; | |
| 12837 | 53 _pd_cache_table = new ProtectionDomainCacheTable(defaultProtectionDomainCacheSize); |
| 0 | 54 }; |
| 55 | |
| 12837 | 56 ProtectionDomainCacheEntry* Dictionary::cache_get(oop protection_domain) { |
| 57 return _pd_cache_table->get(protection_domain); | |
| 58 } | |
| 0 | 59 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
60 DictionaryEntry* Dictionary::new_entry(unsigned int hash, Klass* klass, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
61 ClassLoaderData* loader_data) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
62 DictionaryEntry* entry = (DictionaryEntry*)Hashtable<Klass*, mtClass>::new_entry(hash, klass); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
63 entry->set_loader_data(loader_data); |
| 0 | 64 entry->set_pd_set(NULL); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
65 assert(klass->oop_is_instance(), "Must be"); |
| 0 | 66 return entry; |
| 67 } | |
| 68 | |
| 69 | |
| 70 void Dictionary::free_entry(DictionaryEntry* entry) { | |
| 71 // avoid recursion when deleting linked list | |
| 72 while (entry->pd_set() != NULL) { | |
| 73 ProtectionDomainEntry* to_delete = entry->pd_set(); | |
| 74 entry->set_pd_set(to_delete->next()); | |
| 75 delete to_delete; | |
| 76 } | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
77 Hashtable<Klass*, mtClass>::free_entry(entry); |
| 0 | 78 } |
| 79 | |
| 80 | |
| 81 bool DictionaryEntry::contains_protection_domain(oop protection_domain) const { | |
| 82 #ifdef ASSERT | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
83 if (protection_domain == InstanceKlass::cast(klass())->protection_domain()) { |
| 0 | 84 // Ensure this doesn't show up in the pd_set (invariant) |
| 85 bool in_pd_set = false; | |
| 86 for (ProtectionDomainEntry* current = _pd_set; | |
| 87 current != NULL; | |
| 88 current = current->next()) { | |
| 89 if (current->protection_domain() == protection_domain) { | |
| 90 in_pd_set = true; | |
| 91 break; | |
| 92 } | |
| 93 } | |
| 94 if (in_pd_set) { | |
| 95 assert(false, "A klass's protection domain should not show up " | |
| 96 "in its sys. dict. PD set"); | |
| 97 } | |
| 98 } | |
| 99 #endif /* ASSERT */ | |
| 100 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
101 if (protection_domain == InstanceKlass::cast(klass())->protection_domain()) { |
| 0 | 102 // Succeeds trivially |
| 103 return true; | |
| 104 } | |
| 105 | |
| 106 for (ProtectionDomainEntry* current = _pd_set; | |
| 107 current != NULL; | |
| 108 current = current->next()) { | |
| 109 if (current->protection_domain() == protection_domain) return true; | |
| 110 } | |
| 111 return false; | |
| 112 } | |
| 113 | |
| 114 | |
| 12837 | 115 void DictionaryEntry::add_protection_domain(Dictionary* dict, oop protection_domain) { |
| 0 | 116 assert_locked_or_safepoint(SystemDictionary_lock); |
| 117 if (!contains_protection_domain(protection_domain)) { | |
| 12837 | 118 ProtectionDomainCacheEntry* entry = dict->cache_get(protection_domain); |
| 0 | 119 ProtectionDomainEntry* new_head = |
| 12837 | 120 new ProtectionDomainEntry(entry, _pd_set); |
| 0 | 121 // Warning: Preserve store ordering. The SystemDictionary is read |
| 122 // without locks. The new ProtectionDomainEntry must be | |
| 123 // complete before other threads can be allowed to see it | |
| 124 // via a store to _pd_set. | |
| 125 OrderAccess::release_store_ptr(&_pd_set, new_head); | |
| 126 } | |
| 127 if (TraceProtectionDomainVerification && WizardMode) { | |
| 128 print(); | |
| 129 } | |
| 130 } | |
| 131 | |
| 132 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
133 bool Dictionary::do_unloading() { |
|
1489
cff162798819
6888953: some calls to function-like macros are missing semicolons
jcoomes
parents:
710
diff
changeset
|
134 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
| 0 | 135 bool class_was_unloaded = false; |
| 136 int index = 0; // Defined here for portability! Do not move | |
| 137 | |
| 138 // Remove unloadable entries and classes from system dictionary | |
| 139 // The placeholder array has been handled in always_strong_oops_do. | |
| 140 DictionaryEntry* probe = NULL; | |
| 141 for (index = 0; index < table_size(); index++) { | |
| 142 for (DictionaryEntry** p = bucket_addr(index); *p != NULL; ) { | |
| 143 probe = *p; | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
144 Klass* e = probe->klass(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
145 ClassLoaderData* loader_data = probe->loader_data(); |
| 0 | 146 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
147 InstanceKlass* ik = InstanceKlass::cast(e); |
| 0 | 148 |
| 149 // Non-unloadable classes were handled in always_strong_oops_do | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
150 if (!is_strongly_reachable(loader_data, e)) { |
| 0 | 151 // Entry was not visited in phase1 (negated test from phase1) |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
152 assert(!loader_data->is_the_null_class_loader_data(), "unloading entry with null class loader"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
153 ClassLoaderData* k_def_class_loader_data = ik->class_loader_data(); |
| 0 | 154 |
| 155 // Do we need to delete this system dictionary entry? | |
| 156 bool purge_entry = false; | |
| 157 | |
| 158 // Do we need to delete this system dictionary entry? | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
159 if (loader_data->is_unloading()) { |
| 0 | 160 // If the loader is not live this entry should always be |
| 161 // removed (will never be looked up again). Note that this is | |
| 162 // not the same as unloading the referred class. | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
163 if (k_def_class_loader_data == loader_data) { |
| 0 | 164 // This is the defining entry, so the referred class is about |
| 165 // to be unloaded. | |
| 166 class_was_unloaded = true; | |
| 167 } | |
| 168 // Also remove this system dictionary entry. | |
| 169 purge_entry = true; | |
| 170 | |
| 171 } else { | |
| 172 // The loader in this entry is alive. If the klass is dead, | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
173 // (determined by checking the defining class loader) |
| 0 | 174 // the loader must be an initiating loader (rather than the |
| 175 // defining loader). Remove this entry. | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
176 if (k_def_class_loader_data->is_unloading()) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
177 // If we get here, the class_loader_data must not be the defining |
| 0 | 178 // loader, it must be an initiating one. |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
179 assert(k_def_class_loader_data != loader_data, |
| 0 | 180 "cannot have live defining loader and unreachable klass"); |
| 181 // Loader is live, but class and its defining loader are dead. | |
| 182 // Remove the entry. The class is going away. | |
| 183 purge_entry = true; | |
| 184 } | |
| 185 } | |
| 186 | |
| 187 if (purge_entry) { | |
| 188 *p = probe->next(); | |
| 189 if (probe == _current_class_entry) { | |
| 190 _current_class_entry = NULL; | |
| 191 } | |
| 192 free_entry(probe); | |
| 193 continue; | |
| 194 } | |
| 195 } | |
| 196 p = probe->next_addr(); | |
| 197 } | |
| 198 } | |
| 199 return class_was_unloaded; | |
| 200 } | |
| 201 | |
| 202 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
203 void Dictionary::always_strong_oops_do(OopClosure* blk) { |
| 12837 | 204 // Follow all system classes and temporary placeholders in dictionary; only |
| 205 // protection domain oops contain references into the heap. In a first | |
| 206 // pass over the system dictionary determine which need to be treated as | |
| 207 // strongly reachable and mark them as such. | |
| 0 | 208 for (int index = 0; index < table_size(); index++) { |
| 209 for (DictionaryEntry *probe = bucket(index); | |
| 210 probe != NULL; | |
| 211 probe = probe->next()) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
212 Klass* e = probe->klass(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
213 ClassLoaderData* loader_data = probe->loader_data(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
214 if (is_strongly_reachable(loader_data, e)) { |
| 12837 | 215 probe->set_strongly_reachable(); |
| 0 | 216 } |
| 217 } | |
| 218 } | |
| 12837 | 219 // Then iterate over the protection domain cache to apply the closure on the |
| 220 // previously marked ones. | |
| 221 _pd_cache_table->always_strong_oops_do(blk); | |
| 0 | 222 } |
| 223 | |
| 224 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
225 void Dictionary::always_strong_classes_do(KlassClosure* closure) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
226 // Follow all system classes and temporary placeholders in dictionary |
| 0 | 227 for (int index = 0; index < table_size(); index++) { |
| 228 for (DictionaryEntry* probe = bucket(index); | |
| 229 probe != NULL; | |
| 230 probe = probe->next()) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
231 Klass* e = probe->klass(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
232 ClassLoaderData* loader_data = probe->loader_data(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
233 if (is_strongly_reachable(loader_data, e)) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
234 closure->do_klass(e); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
235 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
236 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
237 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
238 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
239 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
240 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
241 // Just the classes from defining class loaders |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
242 void Dictionary::classes_do(void f(Klass*)) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
243 for (int index = 0; index < table_size(); index++) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
244 for (DictionaryEntry* probe = bucket(index); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
245 probe != NULL; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
246 probe = probe->next()) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
247 Klass* k = probe->klass(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
248 if (probe->loader_data() == InstanceKlass::cast(k)->class_loader_data()) { |
| 0 | 249 f(k); |
| 250 } | |
| 251 } | |
| 252 } | |
| 253 } | |
| 254 | |
| 255 // Added for initialize_itable_for_klass to handle exceptions | |
| 256 // Just the classes from defining class loaders | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
257 void Dictionary::classes_do(void f(Klass*, TRAPS), TRAPS) { |
| 0 | 258 for (int index = 0; index < table_size(); index++) { |
| 259 for (DictionaryEntry* probe = bucket(index); | |
| 260 probe != NULL; | |
| 261 probe = probe->next()) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
262 Klass* k = probe->klass(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
263 if (probe->loader_data() == InstanceKlass::cast(k)->class_loader_data()) { |
| 0 | 264 f(k, CHECK); |
| 265 } | |
| 266 } | |
| 267 } | |
| 268 } | |
| 269 | |
| 270 // All classes, and their class loaders | |
| 271 // Don't iterate over placeholders | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
272 void Dictionary::classes_do(void f(Klass*, ClassLoaderData*)) { |
| 0 | 273 for (int index = 0; index < table_size(); index++) { |
| 274 for (DictionaryEntry* probe = bucket(index); | |
| 275 probe != NULL; | |
| 276 probe = probe->next()) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
277 Klass* k = probe->klass(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
278 f(k, probe->loader_data()); |
| 0 | 279 } |
| 280 } | |
| 281 } | |
| 282 | |
| 283 void Dictionary::oops_do(OopClosure* f) { | |
| 12837 | 284 // Only the protection domain oops contain references into the heap. Iterate |
| 285 // over all of them. | |
| 286 _pd_cache_table->oops_do(f); | |
| 0 | 287 } |
| 288 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
289 void Dictionary::methods_do(void f(Method*)) { |
| 0 | 290 for (int index = 0; index < table_size(); index++) { |
| 291 for (DictionaryEntry* probe = bucket(index); | |
| 292 probe != NULL; | |
| 293 probe = probe->next()) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
294 Klass* k = probe->klass(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
295 if (probe->loader_data() == InstanceKlass::cast(k)->class_loader_data()) { |
| 0 | 296 // only take klass is we have the entry with the defining class loader |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
297 InstanceKlass::cast(k)->methods_do(f); |
| 0 | 298 } |
| 299 } | |
| 300 } | |
| 301 } | |
| 302 | |
| 12837 | 303 void Dictionary::unlink(BoolObjectClosure* is_alive) { |
| 304 // Only the protection domain cache table may contain references to the heap | |
| 305 // that need to be unlinked. | |
| 306 _pd_cache_table->unlink(is_alive); | |
| 307 } | |
| 0 | 308 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
309 Klass* Dictionary::try_get_next_class() { |
| 0 | 310 while (true) { |
| 311 if (_current_class_entry != NULL) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
312 Klass* k = _current_class_entry->klass(); |
| 0 | 313 _current_class_entry = _current_class_entry->next(); |
| 314 return k; | |
| 315 } | |
| 316 _current_class_index = (_current_class_index + 1) % table_size(); | |
| 317 _current_class_entry = bucket(_current_class_index); | |
| 318 } | |
| 319 // never reached | |
| 320 } | |
| 321 | |
| 322 // Add a loaded class to the system dictionary. | |
| 323 // Readers of the SystemDictionary aren't always locked, so _buckets | |
| 324 // is volatile. The store of the next field in the constructor is | |
| 325 // also cast to volatile; we do this to ensure store order is maintained | |
| 326 // by the compilers. | |
| 327 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
328 void Dictionary::add_klass(Symbol* class_name, ClassLoaderData* loader_data, |
| 0 | 329 KlassHandle obj) { |
| 330 assert_locked_or_safepoint(SystemDictionary_lock); | |
| 331 assert(obj() != NULL, "adding NULL obj"); | |
| 6983 | 332 assert(obj()->name() == class_name, "sanity check on name"); |
|
8667
1f9994892f89
8008549: NPG: SystemDictionary::find(...) unnecessarily keeps class loaders alive
stefank
parents:
7185
diff
changeset
|
333 assert(loader_data != NULL, "Must be non-NULL"); |
| 0 | 334 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
335 unsigned int hash = compute_hash(class_name, loader_data); |
| 0 | 336 int index = hash_to_index(hash); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
337 DictionaryEntry* entry = new_entry(hash, obj(), loader_data); |
| 0 | 338 add_entry(index, entry); |
| 339 } | |
| 340 | |
| 341 | |
| 342 // This routine does not lock the system dictionary. | |
| 343 // | |
| 344 // Since readers don't hold a lock, we must make sure that system | |
| 345 // dictionary entries are only removed at a safepoint (when only one | |
| 346 // thread is running), and are added to in a safe way (all links must | |
| 347 // be updated in an MT-safe manner). | |
| 348 // | |
| 349 // Callers should be aware that an entry could be added just after | |
| 350 // _buckets[index] is read here, so the caller will not see the new entry. | |
| 351 DictionaryEntry* Dictionary::get_entry(int index, unsigned int hash, | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
352 Symbol* class_name, |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
353 ClassLoaderData* loader_data) { |
| 0 | 354 debug_only(_lookup_count++); |
| 355 for (DictionaryEntry* entry = bucket(index); | |
| 356 entry != NULL; | |
| 357 entry = entry->next()) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
358 if (entry->hash() == hash && entry->equals(class_name, loader_data)) { |
| 0 | 359 return entry; |
| 360 } | |
| 361 debug_only(_lookup_length++); | |
| 362 } | |
| 363 return NULL; | |
| 364 } | |
| 365 | |
| 366 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
367 Klass* Dictionary::find(int index, unsigned int hash, Symbol* name, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
368 ClassLoaderData* loader_data, Handle protection_domain, TRAPS) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
369 DictionaryEntry* entry = get_entry(index, hash, name, loader_data); |
| 0 | 370 if (entry != NULL && entry->is_valid_protection_domain(protection_domain)) { |
| 371 return entry->klass(); | |
| 372 } else { | |
| 373 return NULL; | |
| 374 } | |
| 375 } | |
| 376 | |
| 377 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
378 Klass* Dictionary::find_class(int index, unsigned int hash, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
379 Symbol* name, ClassLoaderData* loader_data) { |
| 0 | 380 assert_locked_or_safepoint(SystemDictionary_lock); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
381 assert (index == index_for(name, loader_data), "incorrect index?"); |
| 0 | 382 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
383 DictionaryEntry* entry = get_entry(index, hash, name, loader_data); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
384 return (entry != NULL) ? entry->klass() : (Klass*)NULL; |
| 0 | 385 } |
| 386 | |
| 387 | |
| 388 // Variant of find_class for shared classes. No locking required, as | |
| 389 // that table is static. | |
| 390 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
391 Klass* Dictionary::find_shared_class(int index, unsigned int hash, |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
392 Symbol* name) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
393 assert (index == index_for(name, NULL), "incorrect index?"); |
| 0 | 394 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
395 DictionaryEntry* entry = get_entry(index, hash, name, NULL); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
396 return (entry != NULL) ? entry->klass() : (Klass*)NULL; |
| 0 | 397 } |
| 398 | |
| 399 | |
| 400 void Dictionary::add_protection_domain(int index, unsigned int hash, | |
| 401 instanceKlassHandle klass, | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
402 ClassLoaderData* loader_data, Handle protection_domain, |
| 0 | 403 TRAPS) { |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
404 Symbol* klass_name = klass->name(); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
405 DictionaryEntry* entry = get_entry(index, hash, klass_name, loader_data); |
| 0 | 406 |
| 407 assert(entry != NULL,"entry must be present, we just created it"); | |
| 408 assert(protection_domain() != NULL, | |
| 409 "real protection domain should be present"); | |
| 410 | |
| 12837 | 411 entry->add_protection_domain(this, protection_domain()); |
| 0 | 412 |
| 413 assert(entry->contains_protection_domain(protection_domain()), | |
| 414 "now protection domain should be present"); | |
| 415 } | |
| 416 | |
| 417 | |
| 418 bool Dictionary::is_valid_protection_domain(int index, unsigned int hash, | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
419 Symbol* name, |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
420 ClassLoaderData* loader_data, |
| 0 | 421 Handle protection_domain) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
422 DictionaryEntry* entry = get_entry(index, hash, name, loader_data); |
| 0 | 423 return entry->is_valid_protection_domain(protection_domain); |
| 424 } | |
| 425 | |
| 426 | |
| 427 void Dictionary::reorder_dictionary() { | |
| 428 | |
| 429 // Copy all the dictionary entries into a single master list. | |
| 430 | |
| 431 DictionaryEntry* master_list = NULL; | |
| 432 for (int i = 0; i < table_size(); ++i) { | |
| 433 DictionaryEntry* p = bucket(i); | |
| 434 while (p != NULL) { | |
| 435 DictionaryEntry* tmp; | |
| 436 tmp = p->next(); | |
| 437 p->set_next(master_list); | |
| 438 master_list = p; | |
| 439 p = tmp; | |
| 440 } | |
| 441 set_entry(i, NULL); | |
| 442 } | |
| 443 | |
| 444 // Add the dictionary entries back to the list in the correct buckets. | |
| 445 while (master_list != NULL) { | |
| 446 DictionaryEntry* p = master_list; | |
| 447 master_list = master_list->next(); | |
| 448 p->set_next(NULL); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
449 Symbol* class_name = InstanceKlass::cast((Klass*)(p->klass()))->name(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
450 // Since the null class loader data isn't copied to the CDS archive, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
451 // compute the hash with NULL for loader data. |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
452 unsigned int hash = compute_hash(class_name, NULL); |
| 0 | 453 int index = hash_to_index(hash); |
| 454 p->set_hash(hash); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
455 p->set_loader_data(NULL); // loader_data isn't copied to CDS |
| 0 | 456 p->set_next(bucket(index)); |
| 457 set_entry(index, p); | |
| 458 } | |
| 459 } | |
| 460 | |
| 12837 | 461 ProtectionDomainCacheTable::ProtectionDomainCacheTable(int table_size) |
| 462 : Hashtable<oop, mtClass>(table_size, sizeof(ProtectionDomainCacheEntry)) | |
| 463 { | |
| 464 } | |
| 465 | |
| 466 void ProtectionDomainCacheTable::unlink(BoolObjectClosure* is_alive) { | |
| 467 assert(SafepointSynchronize::is_at_safepoint(), "must be"); | |
| 468 for (int i = 0; i < table_size(); ++i) { | |
| 469 ProtectionDomainCacheEntry** p = bucket_addr(i); | |
| 470 ProtectionDomainCacheEntry* entry = bucket(i); | |
| 471 while (entry != NULL) { | |
| 472 if (is_alive->do_object_b(entry->literal())) { | |
| 473 p = entry->next_addr(); | |
| 474 } else { | |
| 475 *p = entry->next(); | |
| 476 free_entry(entry); | |
| 477 } | |
| 478 entry = *p; | |
| 479 } | |
| 480 } | |
| 481 } | |
| 482 | |
| 483 void ProtectionDomainCacheTable::oops_do(OopClosure* f) { | |
| 484 for (int index = 0; index < table_size(); index++) { | |
| 485 for (ProtectionDomainCacheEntry* probe = bucket(index); | |
| 486 probe != NULL; | |
| 487 probe = probe->next()) { | |
| 488 probe->oops_do(f); | |
| 489 } | |
| 490 } | |
| 491 } | |
| 492 | |
| 493 uint ProtectionDomainCacheTable::bucket_size() { | |
| 494 return sizeof(ProtectionDomainCacheEntry); | |
| 495 } | |
| 496 | |
| 497 #ifndef PRODUCT | |
| 498 void ProtectionDomainCacheTable::print() { | |
| 499 tty->print_cr("Protection domain cache table (table_size=%d, classes=%d)", | |
| 500 table_size(), number_of_entries()); | |
| 501 for (int index = 0; index < table_size(); index++) { | |
| 502 for (ProtectionDomainCacheEntry* probe = bucket(index); | |
| 503 probe != NULL; | |
| 504 probe = probe->next()) { | |
| 505 probe->print(); | |
| 506 } | |
| 507 } | |
| 508 } | |
| 509 | |
| 510 void ProtectionDomainCacheEntry::print() { | |
| 511 tty->print_cr("entry "PTR_FORMAT" value "PTR_FORMAT" strongly_reachable %d next "PTR_FORMAT, | |
| 12840 | 512 this, (void*)literal(), _strongly_reachable, next()); |
| 12837 | 513 } |
| 514 #endif | |
| 515 | |
| 516 void ProtectionDomainCacheTable::verify() { | |
| 517 int element_count = 0; | |
| 518 for (int index = 0; index < table_size(); index++) { | |
| 519 for (ProtectionDomainCacheEntry* probe = bucket(index); | |
| 520 probe != NULL; | |
| 521 probe = probe->next()) { | |
| 522 probe->verify(); | |
| 523 element_count++; | |
| 524 } | |
| 525 } | |
| 526 guarantee(number_of_entries() == element_count, | |
| 527 "Verify of protection domain cache table failed"); | |
| 528 debug_only(verify_lookup_length((double)number_of_entries() / table_size())); | |
| 529 } | |
| 530 | |
| 531 void ProtectionDomainCacheEntry::verify() { | |
| 532 guarantee(literal()->is_oop(), "must be an oop"); | |
| 533 } | |
| 534 | |
| 535 void ProtectionDomainCacheTable::always_strong_oops_do(OopClosure* f) { | |
| 536 // the caller marked the protection domain cache entries that we need to apply | |
| 537 // the closure on. Only process them. | |
| 538 for (int index = 0; index < table_size(); index++) { | |
| 539 for (ProtectionDomainCacheEntry* probe = bucket(index); | |
| 540 probe != NULL; | |
| 541 probe = probe->next()) { | |
| 542 if (probe->is_strongly_reachable()) { | |
| 543 probe->reset_strongly_reachable(); | |
| 544 probe->oops_do(f); | |
| 545 } | |
| 546 } | |
| 547 } | |
| 548 } | |
| 549 | |
| 550 ProtectionDomainCacheEntry* ProtectionDomainCacheTable::get(oop protection_domain) { | |
| 551 unsigned int hash = compute_hash(protection_domain); | |
| 552 int index = hash_to_index(hash); | |
| 553 | |
| 554 ProtectionDomainCacheEntry* entry = find_entry(index, protection_domain); | |
| 555 if (entry == NULL) { | |
| 556 entry = add_entry(index, hash, protection_domain); | |
| 557 } | |
| 558 return entry; | |
| 559 } | |
| 560 | |
| 561 ProtectionDomainCacheEntry* ProtectionDomainCacheTable::find_entry(int index, oop protection_domain) { | |
| 562 for (ProtectionDomainCacheEntry* e = bucket(index); e != NULL; e = e->next()) { | |
| 563 if (e->protection_domain() == protection_domain) { | |
| 564 return e; | |
| 565 } | |
| 566 } | |
| 567 | |
| 568 return NULL; | |
| 569 } | |
| 570 | |
| 571 ProtectionDomainCacheEntry* ProtectionDomainCacheTable::add_entry(int index, unsigned int hash, oop protection_domain) { | |
| 572 assert_locked_or_safepoint(SystemDictionary_lock); | |
| 573 assert(index == index_for(protection_domain), "incorrect index?"); | |
| 574 assert(find_entry(index, protection_domain) == NULL, "no double entry"); | |
| 575 | |
| 576 ProtectionDomainCacheEntry* p = new_entry(hash, protection_domain); | |
| 577 Hashtable<oop, mtClass>::add_entry(index, p); | |
| 578 return p; | |
| 579 } | |
| 580 | |
| 581 void ProtectionDomainCacheTable::free(ProtectionDomainCacheEntry* to_delete) { | |
| 582 unsigned int hash = compute_hash(to_delete->protection_domain()); | |
| 583 int index = hash_to_index(hash); | |
| 584 | |
| 585 ProtectionDomainCacheEntry** p = bucket_addr(index); | |
| 586 ProtectionDomainCacheEntry* entry = bucket(index); | |
| 587 while (true) { | |
| 588 assert(entry != NULL, "sanity"); | |
| 589 | |
| 590 if (entry == to_delete) { | |
| 591 *p = entry->next(); | |
| 592 Hashtable<oop, mtClass>::free_entry(entry); | |
| 593 break; | |
| 594 } else { | |
| 595 p = entry->next_addr(); | |
| 596 entry = *p; | |
| 597 } | |
| 598 } | |
| 599 } | |
| 600 | |
| 710 | 601 SymbolPropertyTable::SymbolPropertyTable(int table_size) |
| 6197 | 602 : Hashtable<Symbol*, mtSymbol>(table_size, sizeof(SymbolPropertyEntry)) |
| 710 | 603 { |
| 604 } | |
| 6197 | 605 SymbolPropertyTable::SymbolPropertyTable(int table_size, HashtableBucket<mtSymbol>* t, |
| 710 | 606 int number_of_entries) |
| 6197 | 607 : Hashtable<Symbol*, mtSymbol>(table_size, sizeof(SymbolPropertyEntry), t, number_of_entries) |
| 710 | 608 { |
| 609 } | |
| 610 | |
| 611 | |
| 612 SymbolPropertyEntry* SymbolPropertyTable::find_entry(int index, unsigned int hash, | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
613 Symbol* sym, |
|
1507
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
710
diff
changeset
|
614 intptr_t sym_mode) { |
|
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
710
diff
changeset
|
615 assert(index == index_for(sym, sym_mode), "incorrect index?"); |
| 710 | 616 for (SymbolPropertyEntry* p = bucket(index); p != NULL; p = p->next()) { |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
617 if (p->hash() == hash && p->symbol() == sym && p->symbol_mode() == sym_mode) { |
| 710 | 618 return p; |
| 619 } | |
| 620 } | |
| 621 return NULL; | |
| 622 } | |
| 623 | |
| 624 | |
| 625 SymbolPropertyEntry* SymbolPropertyTable::add_entry(int index, unsigned int hash, | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
626 Symbol* sym, intptr_t sym_mode) { |
| 710 | 627 assert_locked_or_safepoint(SystemDictionary_lock); |
|
1507
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
710
diff
changeset
|
628 assert(index == index_for(sym, sym_mode), "incorrect index?"); |
|
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
710
diff
changeset
|
629 assert(find_entry(index, hash, sym, sym_mode) == NULL, "no double entry"); |
| 710 | 630 |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
631 SymbolPropertyEntry* p = new_entry(hash, sym, sym_mode); |
| 6197 | 632 Hashtable<Symbol*, mtSymbol>::add_entry(index, p); |
| 710 | 633 return p; |
| 634 } | |
| 635 | |
| 636 void SymbolPropertyTable::oops_do(OopClosure* f) { | |
| 637 for (int index = 0; index < table_size(); index++) { | |
| 638 for (SymbolPropertyEntry* p = bucket(index); p != NULL; p = p->next()) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
639 if (p->method_type() != NULL) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
640 f->do_oop(p->method_type_addr()); |
| 710 | 641 } |
| 642 } | |
| 643 } | |
| 644 } | |
| 645 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
646 void SymbolPropertyTable::methods_do(void f(Method*)) { |
| 710 | 647 for (int index = 0; index < table_size(); index++) { |
| 648 for (SymbolPropertyEntry* p = bucket(index); p != NULL; p = p->next()) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
649 Method* prop = p->method(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
650 if (prop != NULL) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
651 f((Method*)prop); |
| 710 | 652 } |
| 653 } | |
| 654 } | |
| 655 } | |
| 656 | |
| 0 | 657 |
| 658 // ---------------------------------------------------------------------------- | |
| 659 #ifndef PRODUCT | |
| 660 | |
| 661 void Dictionary::print() { | |
| 662 ResourceMark rm; | |
| 663 HandleMark hm; | |
| 664 | |
|
4864
b2cd0ee8f778
7114376: Make system dictionary hashtable bucket array size configurable
acorn
parents:
2426
diff
changeset
|
665 tty->print_cr("Java system dictionary (table_size=%d, classes=%d)", |
|
b2cd0ee8f778
7114376: Make system dictionary hashtable bucket array size configurable
acorn
parents:
2426
diff
changeset
|
666 table_size(), number_of_entries()); |
| 0 | 667 tty->print_cr("^ indicates that initiating loader is different from " |
| 668 "defining loader"); | |
| 669 | |
| 670 for (int index = 0; index < table_size(); index++) { | |
| 671 for (DictionaryEntry* probe = bucket(index); | |
| 672 probe != NULL; | |
| 673 probe = probe->next()) { | |
| 674 if (Verbose) tty->print("%4d: ", index); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
675 Klass* e = probe->klass(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
676 ClassLoaderData* loader_data = probe->loader_data(); |
| 0 | 677 bool is_defining_class = |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
678 (loader_data == InstanceKlass::cast(e)->class_loader_data()); |
| 0 | 679 tty->print("%s%s", is_defining_class ? " " : "^", |
| 6983 | 680 e->external_name()); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
681 |
| 0 | 682 tty->print(", loader "); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
683 loader_data->print_value(); |
| 0 | 684 tty->cr(); |
| 685 } | |
| 686 } | |
| 12837 | 687 tty->cr(); |
| 688 _pd_cache_table->print(); | |
| 689 tty->cr(); | |
| 0 | 690 } |
| 691 | |
| 692 #endif | |
| 693 | |
| 694 void Dictionary::verify() { | |
| 695 guarantee(number_of_entries() >= 0, "Verify of system dictionary failed"); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
696 |
| 0 | 697 int element_count = 0; |
| 698 for (int index = 0; index < table_size(); index++) { | |
| 699 for (DictionaryEntry* probe = bucket(index); | |
| 700 probe != NULL; | |
| 701 probe = probe->next()) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
702 Klass* e = probe->klass(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
703 ClassLoaderData* loader_data = probe->loader_data(); |
| 6983 | 704 guarantee(e->oop_is_instance(), |
| 0 | 705 "Verify of system dictionary failed"); |
| 706 // class loader must be present; a null class loader is the | |
| 707 // boostrap loader | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
708 guarantee(loader_data != NULL || DumpSharedSpaces || |
|
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6983
diff
changeset
|
709 loader_data->class_loader() == NULL || |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
710 loader_data->class_loader()->is_instance(), |
| 0 | 711 "checking type of class_loader"); |
|
17674
85318d1fe8fe
8027146: Class loading verification failure if GC occurs in Universe::flush_dependents_on
coleenp
parents:
12840
diff
changeset
|
712 e->verify(); |
| 0 | 713 probe->verify_protection_domain_set(); |
| 714 element_count++; | |
| 715 } | |
| 716 } | |
| 717 guarantee(number_of_entries() == element_count, | |
| 718 "Verify of system dictionary failed"); | |
| 719 debug_only(verify_lookup_length((double)number_of_entries() / table_size())); | |
| 12837 | 720 |
| 721 _pd_cache_table->verify(); | |
| 0 | 722 } |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
723 |