21 * questions.
22 *
23 */
24
25 #include "cds/aotConstantPoolResolver.hpp"
26 #include "cds/archiveBuilder.hpp"
27 #include "cds/archiveUtils.inline.hpp"
28 #include "cds/cdsConfig.hpp"
29 #include "cds/finalImageRecipes.hpp"
30 #include "classfile/classLoader.hpp"
31 #include "classfile/javaClasses.hpp"
32 #include "classfile/systemDictionary.hpp"
33 #include "classfile/systemDictionaryShared.hpp"
34 #include "classfile/vmClasses.hpp"
35 #include "memory/oopFactory.hpp"
36 #include "memory/resourceArea.hpp"
37 #include "oops/constantPool.inline.hpp"
38 #include "runtime/handles.inline.hpp"
39 #include "runtime/mutexLocker.hpp"
40
41 static FinalImageRecipes* _final_image_recipes = nullptr;
42
43 void* FinalImageRecipes::operator new(size_t size) throw() {
44 return ArchiveBuilder::current()->ro_region_alloc(size);
45 }
46
47 void FinalImageRecipes::record_all_classes() {
48 _all_klasses = ArchiveUtils::archive_array(ArchiveBuilder::current()->klasses());
49 ArchivePtrMarker::mark_pointer(&_all_klasses);
50 }
51
52 void FinalImageRecipes::record_recipes_for_constantpool() {
53 ResourceMark rm;
54
55 // The recipes are recorded regardless of CDSConfig::is_dumping_{invokedynamic,dynamic_proxies,reflection_data}().
56 // If some of these options are not enabled, the corresponding recipes will be
57 // ignored during the final image assembly.
58
59 GrowableArray<Array<int>*> tmp_cp_recipes;
60 GrowableArray<int> tmp_flags;
163 ResourceMark rm(current);
164 ConstantPool* cp = ik->constants();
165 GrowableArray<bool> preresolve_list(cp->length(), cp->length(), false);
166 for (int j = 0; j < cp_indices->length(); j++) {
167 preresolve_list.at_put(cp_indices->at(j), true);
168 }
169 if ((flags & CP_RESOLVE_CLASS) != 0) {
170 AOTConstantPoolResolver::preresolve_class_cp_entries(current, ik, &preresolve_list);
171 }
172 if ((flags & CP_RESOLVE_FIELD_AND_METHOD) != 0) {
173 AOTConstantPoolResolver::preresolve_field_and_method_cp_entries(current, ik, &preresolve_list);
174 }
175 if ((flags & CP_RESOLVE_INDY) != 0) {
176 AOTConstantPoolResolver::preresolve_indy_cp_entries(current, ik, &preresolve_list);
177 }
178 }
179 }
180 }
181 }
182
183 void FinalImageRecipes::load_all_classes(TRAPS) {
184 assert(CDSConfig::is_dumping_final_static_archive(), "sanity");
185 Handle class_loader(THREAD, SystemDictionary::java_system_loader());
186 for (int i = 0; i < _all_klasses->length(); i++) {
187 Klass* k = _all_klasses->at(i);
188 int flags = _flags->at(i);
189 if (k->is_instance_klass()) {
190 InstanceKlass* ik = InstanceKlass::cast(k);
191 if (ik->defined_by_other_loaders()) {
192 SystemDictionaryShared::init_dumptime_info(ik);
193 SystemDictionaryShared::add_unregistered_class(THREAD, ik);
194 SystemDictionaryShared::copy_unregistered_class_size_and_crc32(ik);
195 } else if (!ik->is_hidden()) {
196 Klass* actual = SystemDictionary::resolve_or_fail(ik->name(), class_loader, true, CHECK);
197 if (actual != ik) {
198 ResourceMark rm(THREAD);
199 log_error(aot)("Unable to resolve class from CDS archive: %s", ik->external_name());
200 log_error(aot)("Expected: " INTPTR_FORMAT ", actual: " INTPTR_FORMAT, p2i(ik), p2i(actual));
201 log_error(aot)("Please check if your VM command-line is the same as in the training run");
202 AOTMetaspace::unrecoverable_writing_error();
203 }
204 assert(ik->is_loaded(), "must be");
205 ik->link_class(CHECK);
206
207 if (ik->has_aot_safe_initializer() && (flags & WAS_INITED) != 0) {
208 assert(ik->class_loader() == nullptr, "supported only for boot classes for now");
209 ik->initialize(CHECK);
210 }
211 }
212 }
213 }
214 }
215
216 void FinalImageRecipes::record_recipes() {
217 assert(CDSConfig::is_dumping_preimage_static_archive(), "must be");
218 _final_image_recipes = new FinalImageRecipes();
219 _final_image_recipes->record_all_classes();
220 _final_image_recipes->record_recipes_for_constantpool();
221 }
222
223 void FinalImageRecipes::apply_recipes(TRAPS) {
224 assert(CDSConfig::is_dumping_final_static_archive(), "must be");
225 if (_final_image_recipes != nullptr) {
226 _final_image_recipes->apply_recipes_impl(THREAD);
227 if (HAS_PENDING_EXCEPTION) {
228 log_error(aot)("%s: %s", PENDING_EXCEPTION->klass()->external_name(),
229 java_lang_String::as_utf8_string(java_lang_Throwable::message(PENDING_EXCEPTION)));
230 log_error(aot)("Please check if your VM command-line is the same as in the training run");
231 AOTMetaspace::unrecoverable_writing_error("Unexpected exception, use -Xlog:aot,exceptions=trace for detail");
232 }
233 }
234
235 // Set it to null as we don't need to write this table into the final image.
236 _final_image_recipes = nullptr;
237 }
238
239 void FinalImageRecipes::apply_recipes_impl(TRAPS) {
240 load_all_classes(CHECK);
241 apply_recipes_for_constantpool(THREAD);
242 }
243
244 void FinalImageRecipes::serialize(SerializeClosure* soc) {
245 soc->do_ptr((void**)&_final_image_recipes);
246 }
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21 * questions.
22 *
23 */
24
25 #include "cds/aotConstantPoolResolver.hpp"
26 #include "cds/archiveBuilder.hpp"
27 #include "cds/archiveUtils.inline.hpp"
28 #include "cds/cdsConfig.hpp"
29 #include "cds/finalImageRecipes.hpp"
30 #include "classfile/classLoader.hpp"
31 #include "classfile/javaClasses.hpp"
32 #include "classfile/systemDictionary.hpp"
33 #include "classfile/systemDictionaryShared.hpp"
34 #include "classfile/vmClasses.hpp"
35 #include "memory/oopFactory.hpp"
36 #include "memory/resourceArea.hpp"
37 #include "oops/constantPool.inline.hpp"
38 #include "runtime/handles.inline.hpp"
39 #include "runtime/mutexLocker.hpp"
40
41 GrowableArray<InstanceKlass*>* FinalImageRecipes::_tmp_reflect_klasses = nullptr;
42 GrowableArray<int>* FinalImageRecipes::_tmp_reflect_flags = nullptr;
43 GrowableArray<FinalImageRecipes::TmpDynamicProxyClassInfo>* FinalImageRecipes::_tmp_dynamic_proxy_classes = nullptr;
44 static FinalImageRecipes* _final_image_recipes = nullptr;
45
46 void* FinalImageRecipes::operator new(size_t size) throw() {
47 return ArchiveBuilder::current()->ro_region_alloc(size);
48 }
49
50 void FinalImageRecipes::record_all_classes() {
51 _all_klasses = ArchiveUtils::archive_array(ArchiveBuilder::current()->klasses());
52 ArchivePtrMarker::mark_pointer(&_all_klasses);
53 }
54
55 void FinalImageRecipes::record_recipes_for_constantpool() {
56 ResourceMark rm;
57
58 // The recipes are recorded regardless of CDSConfig::is_dumping_{invokedynamic,dynamic_proxies,reflection_data}().
59 // If some of these options are not enabled, the corresponding recipes will be
60 // ignored during the final image assembly.
61
62 GrowableArray<Array<int>*> tmp_cp_recipes;
63 GrowableArray<int> tmp_flags;
166 ResourceMark rm(current);
167 ConstantPool* cp = ik->constants();
168 GrowableArray<bool> preresolve_list(cp->length(), cp->length(), false);
169 for (int j = 0; j < cp_indices->length(); j++) {
170 preresolve_list.at_put(cp_indices->at(j), true);
171 }
172 if ((flags & CP_RESOLVE_CLASS) != 0) {
173 AOTConstantPoolResolver::preresolve_class_cp_entries(current, ik, &preresolve_list);
174 }
175 if ((flags & CP_RESOLVE_FIELD_AND_METHOD) != 0) {
176 AOTConstantPoolResolver::preresolve_field_and_method_cp_entries(current, ik, &preresolve_list);
177 }
178 if ((flags & CP_RESOLVE_INDY) != 0) {
179 AOTConstantPoolResolver::preresolve_indy_cp_entries(current, ik, &preresolve_list);
180 }
181 }
182 }
183 }
184 }
185
186 void FinalImageRecipes::record_recipes_for_reflection_data() {
187 int reflect_count = 0;
188 if (_tmp_reflect_klasses != nullptr) {
189 for (int i = _tmp_reflect_klasses->length() - 1; i >= 0; i--) {
190 InstanceKlass* ik = _tmp_reflect_klasses->at(i);
191 if (SystemDictionaryShared::is_excluded_class(ik)) {
192 _tmp_reflect_klasses->remove_at(i);
193 _tmp_reflect_flags->remove_at(i);
194 } else {
195 _tmp_reflect_klasses->at_put(i, ArchiveBuilder::current()->get_buffered_addr(ik));
196 }
197 }
198 if (_tmp_reflect_klasses->length() > 0) {
199 _reflect_klasses = ArchiveUtils::archive_array(_tmp_reflect_klasses);
200 _reflect_flags = ArchiveUtils::archive_array(_tmp_reflect_flags);
201
202 ArchivePtrMarker::mark_pointer(&_reflect_klasses);
203 ArchivePtrMarker::mark_pointer(&_reflect_flags);
204 reflect_count = _tmp_reflect_klasses->length();
205 }
206 }
207 log_info(cds)("ReflectionData of %d classes will be archived in final CDS image", reflect_count);
208 }
209
210 void FinalImageRecipes::record_recipes_for_dynamic_proxies() {
211 if (_tmp_dynamic_proxy_classes != nullptr) {
212 // Remove proxies for excluded classes
213 for (int i = _tmp_dynamic_proxy_classes->length() - 1; i >= 0; i--) {
214 TmpDynamicProxyClassInfo* tmp_info = _tmp_dynamic_proxy_classes->adr_at(i);
215 bool exclude = false;
216 for (int j = 0; j < tmp_info->_interfaces->length(); j++) {
217 if (SystemDictionaryShared::is_excluded_class(InstanceKlass::cast(tmp_info->_interfaces->at(j)))) {
218 exclude = true;
219 break;
220 }
221 }
222 if (exclude) {
223 _tmp_dynamic_proxy_classes->remove_at(i);
224 }
225 }
226 int len = _tmp_dynamic_proxy_classes->length();
227 _dynamic_proxy_classes = ArchiveBuilder::new_ro_array<DynamicProxyClassInfo>(len);
228 ArchivePtrMarker::mark_pointer(&_dynamic_proxy_classes);
229 for (int i = 0; i < len; i++) {
230 TmpDynamicProxyClassInfo* tmp_info = _tmp_dynamic_proxy_classes->adr_at(i);
231 DynamicProxyClassInfo* info = _dynamic_proxy_classes->adr_at(i);
232 info->_loader_type = tmp_info->_loader_type;
233 info->_access_flags = tmp_info->_access_flags;
234 info->_proxy_name = ArchiveBuilder::current()->ro_strdup(tmp_info->_proxy_name);
235
236 ResourceMark rm;
237 GrowableArray<Klass*> buffered_interfaces;
238 for (int j = 0; j < tmp_info->_interfaces->length(); j++) {
239 InstanceKlass* intf = InstanceKlass::cast(tmp_info->_interfaces->at(j));
240 assert(!SystemDictionaryShared::is_excluded_class(intf), "sanity");
241 buffered_interfaces.append(ArchiveBuilder::current()->get_buffered_addr(intf));
242 }
243 info->_interfaces = ArchiveUtils::archive_array(&buffered_interfaces);
244
245 ArchivePtrMarker::mark_pointer(&info->_proxy_name);
246 ArchivePtrMarker::mark_pointer(&info->_interfaces);
247 ArchiveBuilder::alloc_stats()->record_dynamic_proxy_class();
248 }
249 }
250 }
251
252 void FinalImageRecipes::load_all_classes(TRAPS) {
253 assert(CDSConfig::is_dumping_final_static_archive(), "sanity");
254 Handle class_loader(THREAD, SystemDictionary::java_system_loader());
255 for (int i = 0; i < _all_klasses->length(); i++) {
256 Klass* k = _all_klasses->at(i);
257 int flags = _flags->at(i);
258 if (k->is_instance_klass()) {
259 InstanceKlass* ik = InstanceKlass::cast(k);
260 if (ik->defined_by_other_loaders()) {
261 SystemDictionaryShared::init_dumptime_info(ik);
262 SystemDictionaryShared::add_unregistered_class(THREAD, ik);
263 SystemDictionaryShared::copy_unregistered_class_size_and_crc32(ik);
264 } else if (!ik->is_hidden()) {
265 Klass* actual = SystemDictionary::resolve_or_fail(ik->name(), class_loader, true, CHECK);
266 if (actual != ik) {
267 ResourceMark rm(THREAD);
268 log_error(aot)("Unable to resolve class from CDS archive: %s", ik->external_name());
269 log_error(aot)("Expected: " INTPTR_FORMAT ", actual: " INTPTR_FORMAT, p2i(ik), p2i(actual));
270 log_error(aot)("Please check if your VM command-line is the same as in the training run");
271 AOTMetaspace::unrecoverable_writing_error();
272 }
273 assert(ik->is_loaded(), "must be");
274 ik->link_class(CHECK);
275
276 if (ik->has_aot_safe_initializer() && (flags & WAS_INITED) != 0) {
277 assert(ik->class_loader() == nullptr, "supported only for boot classes for now");
278 ik->initialize(CHECK);
279 }
280 }
281 }
282 }
283 }
284
285 void FinalImageRecipes::apply_recipes_for_reflection_data(JavaThread* current) {
286 assert(CDSConfig::is_dumping_final_static_archive(), "must be");
287
288 if (CDSConfig::is_dumping_reflection_data() && _reflect_klasses != nullptr) {
289 assert(_reflect_flags != nullptr, "must be");
290 for (int i = 0; i < _reflect_klasses->length(); i++) {
291 InstanceKlass* ik = _reflect_klasses->at(i);
292 int rd_flags = _reflect_flags->at(i);
293 AOTConstantPoolResolver::generate_reflection_data(current, ik, rd_flags);
294 }
295 }
296 }
297
298 void FinalImageRecipes::add_reflection_data_flags(InstanceKlass* ik, TRAPS) {
299 assert(CDSConfig::is_dumping_preimage_static_archive(), "must be");
300 if (ik->is_linked() &&
301 SystemDictionaryShared::is_builtin_loader(ik->class_loader_data()) && !ik->is_hidden() &&
302 java_lang_Class::has_reflection_data(ik->java_mirror())) {
303 int rd_flags = AOTConstantPoolResolver::class_reflection_data_flags(ik, CHECK);
304
305 MutexLocker mu(FinalImageRecipes_lock, Mutex::_no_safepoint_check_flag);
306 if (_tmp_reflect_klasses == nullptr) {
307 _tmp_reflect_klasses = new (mtClassShared) GrowableArray<InstanceKlass*>(100, mtClassShared);
308 _tmp_reflect_flags = new (mtClassShared) GrowableArray<int>(100, mtClassShared);
309 }
310 _tmp_reflect_klasses->append(ik);
311 _tmp_reflect_flags->append(rd_flags);
312 }
313 }
314
315 void FinalImageRecipes::add_dynamic_proxy_class(oop loader, const char* proxy_name, objArrayOop interfaces, int access_flags) {
316 int loader_type;
317 if (loader == nullptr) {
318 loader_type = ClassLoader::BOOT_LOADER;
319 } else if (loader == SystemDictionary::java_platform_loader()) {
320 loader_type = ClassLoader::PLATFORM_LOADER;
321 } else if (loader == SystemDictionary::java_system_loader()) {
322 loader_type = ClassLoader::APP_LOADER;
323 } else {
324 return;
325 }
326
327 MutexLocker mu(FinalImageRecipes_lock, Mutex::_no_safepoint_check_flag);
328 if (_tmp_dynamic_proxy_classes == nullptr) {
329 _tmp_dynamic_proxy_classes = new (mtClassShared) GrowableArray<TmpDynamicProxyClassInfo>(32, mtClassShared);
330 }
331
332 log_info(cds, dynamic, proxy)("Adding proxy name %s", proxy_name);
333
334 TmpDynamicProxyClassInfo info;
335 info._loader_type = loader_type;
336 info._access_flags = access_flags;
337 info._proxy_name = os::strdup(proxy_name);
338 info._interfaces = new (mtClassShared) GrowableArray<Klass*>(interfaces->length(), mtClassShared);
339 for (int i = 0; i < interfaces->length(); i++) {
340 Klass* intf = java_lang_Class::as_Klass(interfaces->obj_at(i));
341 info._interfaces->append(InstanceKlass::cast(intf));
342
343 if (log_is_enabled(Info, cds, dynamic, proxy)) {
344 ResourceMark rm;
345 log_info(cds, dynamic, proxy)("interface[%d] = %s", i, intf->external_name());
346 }
347 }
348 _tmp_dynamic_proxy_classes->append(info);
349 }
350
351 void FinalImageRecipes::apply_recipes_for_dynamic_proxies(TRAPS) {
352 if (CDSConfig::is_dumping_dynamic_proxies() && _dynamic_proxy_classes != nullptr) {
353 for (int proxy_index = 0; proxy_index < _dynamic_proxy_classes->length(); proxy_index++) {
354 DynamicProxyClassInfo* info = _dynamic_proxy_classes->adr_at(proxy_index);
355
356 Handle loader(THREAD, ArchiveUtils::builtin_loader_from_type(info->_loader_type));
357 oop proxy_name_oop = java_lang_String::create_oop_from_str(info->_proxy_name, CHECK);
358 Handle proxy_name(THREAD, proxy_name_oop);
359
360 int num_intfs = info->_interfaces->length();
361 objArrayOop interfaces_oop = oopFactory::new_objArray(vmClasses::Class_klass(), num_intfs, CHECK);
362 objArrayHandle interfaces(THREAD, interfaces_oop);
363 for (int intf_index = 0; intf_index < num_intfs; intf_index++) {
364 Klass* k = info->_interfaces->at(intf_index);
365 assert(k->java_mirror() != nullptr, "must be loaded");
366 interfaces()->obj_at_put(intf_index, k->java_mirror());
367 }
368
369 AOTConstantPoolResolver::define_dynamic_proxy_class(loader, proxy_name, interfaces, info->_access_flags, CHECK);
370 }
371 }
372 }
373
374 void FinalImageRecipes::record_recipes() {
375 assert(CDSConfig::is_dumping_preimage_static_archive(), "must be");
376 _final_image_recipes = new FinalImageRecipes();
377 _final_image_recipes->record_all_classes();
378 _final_image_recipes->record_recipes_for_constantpool();
379 _final_image_recipes->record_recipes_for_reflection_data();
380 _final_image_recipes->record_recipes_for_dynamic_proxies();
381 }
382
383 void FinalImageRecipes::apply_recipes(TRAPS) {
384 assert(CDSConfig::is_dumping_final_static_archive(), "must be");
385 if (_final_image_recipes != nullptr) {
386 _final_image_recipes->apply_recipes_impl(THREAD);
387 if (HAS_PENDING_EXCEPTION) {
388 log_error(aot)("%s: %s", PENDING_EXCEPTION->klass()->external_name(),
389 java_lang_String::as_utf8_string(java_lang_Throwable::message(PENDING_EXCEPTION)));
390 log_error(aot)("Please check if your VM command-line is the same as in the training run");
391 AOTMetaspace::unrecoverable_writing_error("Unexpected exception, use -Xlog:aot,exceptions=trace for detail");
392 }
393 }
394
395 // Set it to null as we don't need to write this table into the final image.
396 _final_image_recipes = nullptr;
397 }
398
399 void FinalImageRecipes::apply_recipes_impl(TRAPS) {
400 load_all_classes(CHECK);
401 apply_recipes_for_constantpool(THREAD);
402 apply_recipes_for_reflection_data(CHECK);
403 apply_recipes_for_dynamic_proxies(CHECK);
404 }
405
406 void FinalImageRecipes::serialize(SerializeClosure* soc) {
407 soc->do_ptr((void**)&_final_image_recipes);
408 }
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