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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "cds/archiveBuilder.hpp"
27 #include "cds/cdsConfig.hpp"
28 #include "cds/heapShared.hpp"
29 #include "classfile/resolutionErrors.hpp"
30 #include "classfile/systemDictionary.hpp"
31 #include "classfile/systemDictionaryShared.hpp"
32 #include "classfile/vmClasses.hpp"
33 #include "code/codeCache.hpp"
34 #include "interpreter/bytecodeStream.hpp"
35 #include "interpreter/bytecodes.hpp"
36 #include "interpreter/interpreter.hpp"
37 #include "interpreter/linkResolver.hpp"
38 #include "interpreter/rewriter.hpp"
39 #include "logging/log.hpp"
40 #include "logging/logStream.hpp"
41 #include "memory/metadataFactory.hpp"
42 #include "memory/metaspaceClosure.hpp"
43 #include "memory/resourceArea.hpp"
44 #include "oops/access.inline.hpp"
45 #include "oops/compressedOops.hpp"
46 #include "oops/constantPool.inline.hpp"
156 }
157 default:
158 ShouldNotReachHere();
159 break;
160 }
161
162 // Note: byte_no also appears in TemplateTable::resolve.
163 if (byte_no == 1) {
164 assert(invoke_code != Bytecodes::_invokevirtual &&
165 invoke_code != Bytecodes::_invokeinterface, "");
166 bool do_resolve = true;
167 // Don't mark invokespecial to method as resolved if sender is an interface. The receiver
168 // has to be checked that it is a subclass of the current class every time this bytecode
169 // is executed.
170 if (invoke_code == Bytecodes::_invokespecial && sender_is_interface &&
171 method->name() != vmSymbols::object_initializer_name()) {
172 do_resolve = false;
173 }
174 if (invoke_code == Bytecodes::_invokestatic) {
175 assert(method->method_holder()->is_initialized() ||
176 method->method_holder()->is_init_thread(JavaThread::current()),
177 "invalid class initialization state for invoke_static");
178
179 if (!VM_Version::supports_fast_class_init_checks() && method->needs_clinit_barrier()) {
180 // Don't mark invokestatic to method as resolved if the holder class has not yet completed
181 // initialization. An invokestatic must only proceed if the class is initialized, but if
182 // we resolve it before then that class initialization check is skipped.
183 //
184 // When fast class initialization checks are supported (VM_Version::supports_fast_class_init_checks() == true),
185 // template interpreter supports fast class initialization check for
186 // invokestatic which doesn't require call site re-resolution to
187 // enforce class initialization barrier.
188 do_resolve = false;
189 }
190 }
191 if (do_resolve) {
192 method_entry->set_bytecode1(invoke_code);
193 }
194 } else if (byte_no == 2) {
195 if (change_to_virtual) {
196 assert(invoke_code == Bytecodes::_invokeinterface, "");
343 case Bytecodes::_invokedynamic:
344 ShouldNotReachHere();
345 default:
346 assert(invoke_code == (Bytecodes::Code)0, "unexpected bytecode");
347 break;
348 }
349
350 invoke_code = (Bytecodes::Code)method_entry->bytecode2();
351 if (invoke_code == Bytecodes::_invokevirtual) {
352 if (method_entry->is_vfinal()) {
353 return method_entry->method();
354 } else {
355 int holder_index = constant_pool()->uncached_klass_ref_index_at(method_entry->constant_pool_index());
356 if (constant_pool()->tag_at(holder_index).is_klass()) {
357 Klass* klass = constant_pool()->resolved_klass_at(holder_index);
358 return klass->method_at_vtable(method_entry->table_index());
359 }
360 }
361 }
362 return nullptr;
363 }
364
365 ConstantPoolCache* ConstantPoolCache::allocate(ClassLoaderData* loader_data,
366 const intStack& invokedynamic_map,
367 const GrowableArray<ResolvedIndyEntry> indy_entries,
368 const GrowableArray<ResolvedFieldEntry> field_entries,
369 const GrowableArray<ResolvedMethodEntry> method_entries,
370 TRAPS) {
371
372 int size = ConstantPoolCache::size();
373
374 // Initialize resolved entry arrays with available data
375 Array<ResolvedFieldEntry>* resolved_field_entries = initialize_resolved_entries_array(loader_data, field_entries, CHECK_NULL);
376 Array<ResolvedIndyEntry>* resolved_indy_entries = initialize_resolved_entries_array(loader_data, indy_entries, CHECK_NULL);
377 Array<ResolvedMethodEntry>* resolved_method_entries = initialize_resolved_entries_array(loader_data, method_entries, CHECK_NULL);
378
379 return new (loader_data, size, MetaspaceObj::ConstantPoolCacheType, THREAD)
380 ConstantPoolCache(invokedynamic_map, resolved_indy_entries, resolved_field_entries, resolved_method_entries);
381 }
382
383 // Record the GC marking cycle when redefined vs. when found in the loom stack chunks.
384 void ConstantPoolCache::record_gc_epoch() {
385 _gc_epoch = CodeCache::gc_epoch();
386 }
387
388 #if INCLUDE_CDS
389 void ConstantPoolCache::remove_unshareable_info() {
390 assert(CDSConfig::is_dumping_archive(), "sanity");
391 // <this> is the copy to be written into the archive. It's in the ArchiveBuilder's "buffer space".
392 // However, this->_initial_entries was not copied/relocated by the ArchiveBuilder, so it's
393 // still pointing to the array allocated inside save_for_archive().
394 if (_resolved_indy_entries != nullptr) {
395 for (int i = 0; i < _resolved_indy_entries->length(); i++) {
396 resolved_indy_entry_at(i)->remove_unshareable_info();
397 }
398 }
399 if (_resolved_field_entries != nullptr) {
400 for (int i = 0; i < _resolved_field_entries->length(); i++) {
401 resolved_field_entry_at(i)->remove_unshareable_info();
402 }
403 }
404 if (_resolved_method_entries != nullptr) {
405 for (int i = 0; i < _resolved_method_entries->length(); i++) {
406 resolved_method_entry_at(i)->remove_unshareable_info();
407 }
408 }
409 }
410 #endif // INCLUDE_CDS
411
412 void ConstantPoolCache::deallocate_contents(ClassLoaderData* data) {
413 assert(!is_shared(), "shared caches are not deallocated");
414 data->remove_handle(_resolved_references);
415 set_resolved_references(OopHandle());
416 MetadataFactory::free_array<u2>(data, _reference_map);
417 set_reference_map(nullptr);
418 #if INCLUDE_CDS
419 if (_resolved_indy_entries != nullptr) {
420 MetadataFactory::free_array<ResolvedIndyEntry>(data, _resolved_indy_entries);
421 _resolved_indy_entries = nullptr;
422 }
423 if (_resolved_field_entries != nullptr) {
424 MetadataFactory::free_array<ResolvedFieldEntry>(data, _resolved_field_entries);
425 _resolved_field_entries = nullptr;
426 }
427 if (_resolved_method_entries != nullptr) {
428 MetadataFactory::free_array<ResolvedMethodEntry>(data, _resolved_method_entries);
429 _resolved_method_entries = nullptr;
430 }
431 #endif
|
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "cds/cdsConfig.hpp"
27 #include "cds/heapShared.hpp"
28 #include "classfile/resolutionErrors.hpp"
29 #include "classfile/systemDictionary.hpp"
30 #include "classfile/systemDictionaryShared.hpp"
31 #include "classfile/vmClasses.hpp"
32 #include "code/codeCache.hpp"
33 #include "interpreter/bytecodeStream.hpp"
34 #include "interpreter/bytecodes.hpp"
35 #include "interpreter/interpreter.hpp"
36 #include "interpreter/linkResolver.hpp"
37 #include "interpreter/rewriter.hpp"
38 #include "logging/log.hpp"
39 #include "logging/logStream.hpp"
40 #include "memory/metadataFactory.hpp"
41 #include "memory/metaspaceClosure.hpp"
42 #include "memory/resourceArea.hpp"
43 #include "oops/access.inline.hpp"
44 #include "oops/compressedOops.hpp"
45 #include "oops/constantPool.inline.hpp"
155 }
156 default:
157 ShouldNotReachHere();
158 break;
159 }
160
161 // Note: byte_no also appears in TemplateTable::resolve.
162 if (byte_no == 1) {
163 assert(invoke_code != Bytecodes::_invokevirtual &&
164 invoke_code != Bytecodes::_invokeinterface, "");
165 bool do_resolve = true;
166 // Don't mark invokespecial to method as resolved if sender is an interface. The receiver
167 // has to be checked that it is a subclass of the current class every time this bytecode
168 // is executed.
169 if (invoke_code == Bytecodes::_invokespecial && sender_is_interface &&
170 method->name() != vmSymbols::object_initializer_name()) {
171 do_resolve = false;
172 }
173 if (invoke_code == Bytecodes::_invokestatic) {
174 assert(method->method_holder()->is_initialized() ||
175 method->method_holder()->is_init_thread(JavaThread::current()) ||
176 (CDSConfig::is_dumping_archive() && VM_Version::supports_fast_class_init_checks()),
177 "invalid class initialization state for invoke_static");
178
179 if (!VM_Version::supports_fast_class_init_checks() && method->needs_clinit_barrier()) {
180 // Don't mark invokestatic to method as resolved if the holder class has not yet completed
181 // initialization. An invokestatic must only proceed if the class is initialized, but if
182 // we resolve it before then that class initialization check is skipped.
183 //
184 // When fast class initialization checks are supported (VM_Version::supports_fast_class_init_checks() == true),
185 // template interpreter supports fast class initialization check for
186 // invokestatic which doesn't require call site re-resolution to
187 // enforce class initialization barrier.
188 do_resolve = false;
189 }
190 }
191 if (do_resolve) {
192 method_entry->set_bytecode1(invoke_code);
193 }
194 } else if (byte_no == 2) {
195 if (change_to_virtual) {
196 assert(invoke_code == Bytecodes::_invokeinterface, "");
343 case Bytecodes::_invokedynamic:
344 ShouldNotReachHere();
345 default:
346 assert(invoke_code == (Bytecodes::Code)0, "unexpected bytecode");
347 break;
348 }
349
350 invoke_code = (Bytecodes::Code)method_entry->bytecode2();
351 if (invoke_code == Bytecodes::_invokevirtual) {
352 if (method_entry->is_vfinal()) {
353 return method_entry->method();
354 } else {
355 int holder_index = constant_pool()->uncached_klass_ref_index_at(method_entry->constant_pool_index());
356 if (constant_pool()->tag_at(holder_index).is_klass()) {
357 Klass* klass = constant_pool()->resolved_klass_at(holder_index);
358 return klass->method_at_vtable(method_entry->table_index());
359 }
360 }
361 }
362 return nullptr;
363 #if 0
364 else {
365 assert(is_field_entry(), "must be a field entry");
366 st->print_cr(" - F1: [ " PTR_FORMAT "]", (intptr_t)_f1);
367 st->print_cr(" - F2: [ " PTR_FORMAT "]", (intptr_t)_f2);
368 st->print_cr(" - flag values: [%02x|0|1|0|0|0|%01x|%01x|0|0|%04x]",
369 flag_state(), is_final(), is_volatile(), field_index());
370 st->print_cr(" - tos: %s\n - final: %d\n - volatile: %d\n - field index: %04x",
371 type2name(as_BasicType(flag_state())), is_final(), is_volatile(), field_index());
372 }
373 st->print_cr(" -------------");
374 #endif
375 }
376
377 ConstantPoolCache* ConstantPoolCache::allocate(ClassLoaderData* loader_data,
378 const intStack& invokedynamic_map,
379 const GrowableArray<ResolvedIndyEntry> indy_entries,
380 const GrowableArray<ResolvedFieldEntry> field_entries,
381 const GrowableArray<ResolvedMethodEntry> method_entries,
382 TRAPS) {
383
384 int size = ConstantPoolCache::size();
385
386 // Initialize resolved entry arrays with available data
387 Array<ResolvedFieldEntry>* resolved_field_entries = initialize_resolved_entries_array(loader_data, field_entries, CHECK_NULL);
388 Array<ResolvedIndyEntry>* resolved_indy_entries = initialize_resolved_entries_array(loader_data, indy_entries, CHECK_NULL);
389 Array<ResolvedMethodEntry>* resolved_method_entries = initialize_resolved_entries_array(loader_data, method_entries, CHECK_NULL);
390
391 return new (loader_data, size, MetaspaceObj::ConstantPoolCacheType, THREAD)
392 ConstantPoolCache(invokedynamic_map, resolved_indy_entries, resolved_field_entries, resolved_method_entries);
393 }
394
395 // Record the GC marking cycle when redefined vs. when found in the loom stack chunks.
396 void ConstantPoolCache::record_gc_epoch() {
397 _gc_epoch = CodeCache::gc_epoch();
398 }
399
400 void ConstantPoolCache::deallocate_contents(ClassLoaderData* data) {
401 assert(!is_shared(), "shared caches are not deallocated");
402 data->remove_handle(_resolved_references);
403 set_resolved_references(OopHandle());
404 MetadataFactory::free_array<u2>(data, _reference_map);
405 set_reference_map(nullptr);
406 #if INCLUDE_CDS
407 if (_resolved_indy_entries != nullptr) {
408 MetadataFactory::free_array<ResolvedIndyEntry>(data, _resolved_indy_entries);
409 _resolved_indy_entries = nullptr;
410 }
411 if (_resolved_field_entries != nullptr) {
412 MetadataFactory::free_array<ResolvedFieldEntry>(data, _resolved_field_entries);
413 _resolved_field_entries = nullptr;
414 }
415 if (_resolved_method_entries != nullptr) {
416 MetadataFactory::free_array<ResolvedMethodEntry>(data, _resolved_method_entries);
417 _resolved_method_entries = nullptr;
418 }
419 #endif
|