262 }
263 }
264 }
265
266 // Caller needs ResourceMark.
267 static void throw_dup_pkg_exception(const char* module_name, PackageEntry* package, TRAPS) {
268 const char* package_name = package->name()->as_C_string();
269 if (package->module()->is_named()) {
270 THROW_MSG(vmSymbols::java_lang_IllegalStateException(),
271 err_msg("Package %s for module %s is already in another module, %s, defined to the class loader",
272 package_name, module_name, package->module()->name()->as_C_string()));
273 } else {
274 THROW_MSG(vmSymbols::java_lang_IllegalStateException(),
275 err_msg("Package %s for module %s is already in the unnamed module defined to the class loader",
276 package_name, module_name));
277 }
278 }
279
280 void Modules::define_module(Handle module, jboolean is_open, jstring version,
281 jstring location, jobjectArray packages, TRAPS) {
282 check_cds_restrictions(CHECK);
283 ResourceMark rm(THREAD);
284
285 if (module.is_null()) {
286 THROW_MSG(vmSymbols::java_lang_NullPointerException(), "Null module object");
287 }
288
289 if (!java_lang_Module::is_instance(module())) {
290 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
291 "module is not an instance of type java.lang.Module");
292 }
293
294 int module_name_len;
295 char* module_name = get_module_name(module(), module_name_len, CHECK);
296 if (module_name == nullptr) {
297 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
298 "Module name cannot be null");
299 }
300
301 // Resolve packages
302 objArrayHandle packages_h(THREAD, objArrayOop(JNIHandles::resolve(packages)));
303 int num_packages = (packages_h.is_null() ? 0 : packages_h->length());
304
305 // Special handling of java.base definition
306 if (strcmp(module_name, JAVA_BASE_NAME) == 0) {
307 assert(is_open == JNI_FALSE, "java.base module cannot be open");
308 define_javabase_module(module, version, location, packages_h, num_packages, CHECK);
309 return;
310 }
311
312 oop loader = java_lang_Module::loader(module());
313 Handle h_loader = Handle(THREAD, loader);
314 // define_module can be called during start-up, before the class loader's ClassLoaderData
315 // has been created. SystemDictionary::register_loader ensures creation, if needed.
316 ClassLoaderData* loader_data = SystemDictionary::register_loader(h_loader);
317 assert(loader_data != nullptr, "class loader data shouldn't be null");
318
319 // Only modules defined to either the boot or platform class loader, can define a "java/" package.
320 bool java_pkg_disallowed = !h_loader.is_null() &&
321 !SystemDictionary::is_platform_class_loader(h_loader());
322
323 // Check that the list of packages has no duplicates and that the
717 }
718
719 if (h_system_loader.is_null()) {
720 THROW_MSG(vmSymbols::java_lang_NullPointerException(), "Null system loader object");
721 }
722
723 ClassLoaderData* platform_loader_data = SystemDictionary::register_loader(h_platform_loader);
724 SystemDictionary::set_platform_loader(platform_loader_data);
725 ClassLoaderDataShared::restore_java_platform_loader_from_archive(platform_loader_data);
726
727 ClassLoaderData* system_loader_data = SystemDictionary::register_loader(h_system_loader);
728 SystemDictionary::set_system_loader(system_loader_data);
729 // system_loader_data here is always an instance of jdk.internal.loader.ClassLoader$AppClassLoader.
730 // However, if -Djava.system.class.loader=xxx is specified, java_platform_loader() would
731 // be an instance of a user-defined class, so make sure this never happens.
732 assert(Arguments::get_property("java.system.class.loader") == nullptr,
733 "archived full module should have been disabled if -Djava.system.class.loader is specified");
734 ClassLoaderDataShared::restore_java_system_loader_from_archive(system_loader_data);
735 }
736
737 void Modules::check_cds_restrictions(TRAPS) {
738 if (CDSConfig::is_dumping_full_module_graph() && Universe::is_module_initialized()) {
739 THROW_MSG(vmSymbols::java_lang_UnsupportedOperationException(),
740 "During -Xshare:dump, module system cannot be modified after it's initialized");
741 }
742 }
743 #endif // INCLUDE_CDS_JAVA_HEAP
744
745 void Modules::set_bootloader_unnamed_module(Handle module, TRAPS) {
746 ResourceMark rm(THREAD);
747
748 if (module.is_null()) {
749 THROW_MSG(vmSymbols::java_lang_NullPointerException(), "Null module object");
750 }
751 if (!java_lang_Module::is_instance(module())) {
752 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
753 "module is not an instance of type java.lang.Module");
754 }
755
756 // Ensure that this is an unnamed module
757 oop name = java_lang_Module::name(module());
758 if (name != nullptr) {
759 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
760 "boot loader's unnamed module's java.lang.Module has a name");
761 }
762
763 // Validate java_base's loader is the boot loader.
764 oop loader = java_lang_Module::loader(module());
765 if (loader != nullptr) {
766 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
767 "Class loader must be the boot class loader");
768 }
769
770 log_debug(module)("set_bootloader_unnamed_module(): recording unnamed module for boot loader");
771
772 // Set java.lang.Module for the boot loader's unnamed module
773 ClassLoaderData* boot_loader_data = ClassLoaderData::the_null_class_loader_data();
774 ModuleEntry* unnamed_module = boot_loader_data->unnamed_module();
775 assert(unnamed_module != nullptr, "boot loader's unnamed ModuleEntry not defined");
776 unnamed_module->set_module(boot_loader_data->add_handle(module));
777 // Store pointer to the ModuleEntry in the unnamed module's java.lang.Module object.
778 java_lang_Module::set_module_entry(module(), unnamed_module);
779 }
780
781 void Modules::add_module_exports(Handle from_module, jstring package_name, Handle to_module, TRAPS) {
782 check_cds_restrictions(CHECK);
783
784 if (package_name == nullptr) {
785 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
786 "package is null");
787 }
788 if (from_module.is_null()) {
789 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
790 "from_module is null");
791 }
792 ModuleEntry* from_module_entry = get_module_entry(from_module, CHECK);
793 if (from_module_entry == nullptr) {
794 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
795 "from_module cannot be found");
796 }
797
798 // All packages in unnamed and open modules are exported by default.
799 if (!from_module_entry->is_named() || from_module_entry->is_open()) return;
800
801 ModuleEntry* to_module_entry;
802 if (to_module.is_null()) {
830 if (package_entry == nullptr) {
831 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
832 err_msg("Package %s not found in from_module %s",
833 pkg != nullptr ? pkg : "",
834 from_module_entry->name()->as_C_string()));
835 }
836
837 if (log_is_enabled(Debug, module)) {
838 log_debug(module)("add_module_exports(): package %s in module %s is exported to module %s",
839 package_entry->name()->as_C_string(),
840 from_module_entry->name()->as_C_string(),
841 to_module_entry == nullptr ? "null" :
842 to_module_entry->is_named() ?
843 to_module_entry->name()->as_C_string() : UNNAMED_MODULE);
844 }
845 }
846
847
848 void Modules::add_module_exports_qualified(Handle from_module, jstring package,
849 Handle to_module, TRAPS) {
850 check_cds_restrictions(CHECK);
851 if (to_module.is_null()) {
852 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
853 "to_module is null");
854 }
855 add_module_exports(from_module, package, to_module, CHECK);
856 }
857
858 void Modules::add_reads_module(Handle from_module, Handle to_module, TRAPS) {
859 check_cds_restrictions(CHECK);
860 if (from_module.is_null()) {
861 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
862 "from_module is null");
863 }
864
865 ModuleEntry* from_module_entry = get_module_entry(from_module, CHECK);
866 if (from_module_entry == nullptr) {
867 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
868 "from_module is not valid");
869 }
870
871 ModuleEntry* to_module_entry;
872 if (!to_module.is_null()) {
873 to_module_entry = get_module_entry(to_module, CHECK);
874 if (to_module_entry == nullptr) {
875 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
876 "to_module is invalid");
877 }
878 } else {
879 to_module_entry = nullptr;
945 assert(h_loader.is_null() || java_lang_ClassLoader::is_subclass(h_loader->klass()),
946 "Class loader is not a subclass of java.lang.ClassLoader");
947 assert(package_name != nullptr, "the package_name should not be null");
948
949 if (strlen(package_name) == 0) {
950 return nullptr;
951 }
952 TempNewSymbol package_sym = SymbolTable::new_symbol(package_name);
953 const PackageEntry* const pkg_entry =
954 get_package_entry_by_name(package_sym, h_loader);
955 const ModuleEntry* const module_entry = (pkg_entry != nullptr ? pkg_entry->module() : nullptr);
956
957 if (module_entry != nullptr && module_entry->module() != nullptr && module_entry->is_named()) {
958 return module_entry->module();
959 }
960 return nullptr;
961 }
962
963 // Export package in module to all unnamed modules.
964 void Modules::add_module_exports_to_all_unnamed(Handle module, jstring package_name, TRAPS) {
965 check_cds_restrictions(CHECK);
966 if (module.is_null()) {
967 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
968 "module is null");
969 }
970 if (package_name == nullptr) {
971 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
972 "package is null");
973 }
974 ModuleEntry* module_entry = get_module_entry(module, CHECK);
975 if (module_entry == nullptr) {
976 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
977 "module is invalid");
978 }
979
980 // No-op for unnamed module and open modules
981 if (!module_entry->is_named() || module_entry->is_open())
982 return;
983
984 ResourceMark rm(THREAD);
985 char buf[128];
|
262 }
263 }
264 }
265
266 // Caller needs ResourceMark.
267 static void throw_dup_pkg_exception(const char* module_name, PackageEntry* package, TRAPS) {
268 const char* package_name = package->name()->as_C_string();
269 if (package->module()->is_named()) {
270 THROW_MSG(vmSymbols::java_lang_IllegalStateException(),
271 err_msg("Package %s for module %s is already in another module, %s, defined to the class loader",
272 package_name, module_name, package->module()->name()->as_C_string()));
273 } else {
274 THROW_MSG(vmSymbols::java_lang_IllegalStateException(),
275 err_msg("Package %s for module %s is already in the unnamed module defined to the class loader",
276 package_name, module_name));
277 }
278 }
279
280 void Modules::define_module(Handle module, jboolean is_open, jstring version,
281 jstring location, jobjectArray packages, TRAPS) {
282 ResourceMark rm(THREAD);
283
284 if (module.is_null()) {
285 THROW_MSG(vmSymbols::java_lang_NullPointerException(), "Null module object");
286 }
287
288 if (!java_lang_Module::is_instance(module())) {
289 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
290 "module is not an instance of type java.lang.Module");
291 }
292
293 int module_name_len;
294 char* module_name = get_module_name(module(), module_name_len, CHECK);
295 if (module_name == nullptr) {
296 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
297 "Module name cannot be null");
298 }
299
300 // Resolve packages
301 objArrayHandle packages_h(THREAD, objArrayOop(JNIHandles::resolve(packages)));
302 int num_packages = (packages_h.is_null() ? 0 : packages_h->length());
303 if (strncmp(module_name, "jdk.proxy", 9) != 0) {
304 check_cds_restrictions(Handle(), Handle(), CHECK);
305 }
306
307 // Special handling of java.base definition
308 if (strcmp(module_name, JAVA_BASE_NAME) == 0) {
309 assert(is_open == JNI_FALSE, "java.base module cannot be open");
310 define_javabase_module(module, version, location, packages_h, num_packages, CHECK);
311 return;
312 }
313
314 oop loader = java_lang_Module::loader(module());
315 Handle h_loader = Handle(THREAD, loader);
316 // define_module can be called during start-up, before the class loader's ClassLoaderData
317 // has been created. SystemDictionary::register_loader ensures creation, if needed.
318 ClassLoaderData* loader_data = SystemDictionary::register_loader(h_loader);
319 assert(loader_data != nullptr, "class loader data shouldn't be null");
320
321 // Only modules defined to either the boot or platform class loader, can define a "java/" package.
322 bool java_pkg_disallowed = !h_loader.is_null() &&
323 !SystemDictionary::is_platform_class_loader(h_loader());
324
325 // Check that the list of packages has no duplicates and that the
719 }
720
721 if (h_system_loader.is_null()) {
722 THROW_MSG(vmSymbols::java_lang_NullPointerException(), "Null system loader object");
723 }
724
725 ClassLoaderData* platform_loader_data = SystemDictionary::register_loader(h_platform_loader);
726 SystemDictionary::set_platform_loader(platform_loader_data);
727 ClassLoaderDataShared::restore_java_platform_loader_from_archive(platform_loader_data);
728
729 ClassLoaderData* system_loader_data = SystemDictionary::register_loader(h_system_loader);
730 SystemDictionary::set_system_loader(system_loader_data);
731 // system_loader_data here is always an instance of jdk.internal.loader.ClassLoader$AppClassLoader.
732 // However, if -Djava.system.class.loader=xxx is specified, java_platform_loader() would
733 // be an instance of a user-defined class, so make sure this never happens.
734 assert(Arguments::get_property("java.system.class.loader") == nullptr,
735 "archived full module should have been disabled if -Djava.system.class.loader is specified");
736 ClassLoaderDataShared::restore_java_system_loader_from_archive(system_loader_data);
737 }
738
739 void Modules::check_cds_restrictions(Handle module1, Handle module2, TRAPS) {
740 if (CDSConfig::is_dumping_full_module_graph() && Universe::is_module_initialized()) {
741 if (CDSConfig::is_dumping_dynamic_proxies() && (is_dynamic_proxy_module(module1) || is_dynamic_proxy_module(module2))) {
742 // The only the we allow is to add or modify the jdk.proxy?? modules that are used for dynamic proxies.
743 } else {
744 THROW_MSG(vmSymbols::java_lang_UnsupportedOperationException(),
745 "During -Xshare:dump, module system cannot be modified after it's initialized");
746 }
747 }
748 }
749
750 #endif // INCLUDE_CDS_JAVA_HEAP
751
752 bool Modules::is_dynamic_proxy_module(Handle module) {
753 if (!module.is_null()) {
754 ModuleEntry* module_entry = java_lang_Module::module_entry(module());
755 return is_dynamic_proxy_module(module_entry);
756 }
757 return false;
758 }
759
760 bool Modules::is_dynamic_proxy_module(ModuleEntry* module_entry) {
761 return (module_entry != nullptr && module_entry->is_named() && module_entry->name()->starts_with("jdk.proxy"));
762 }
763
764 void Modules::set_bootloader_unnamed_module(Handle module, TRAPS) {
765 ResourceMark rm(THREAD);
766
767 if (module.is_null()) {
768 THROW_MSG(vmSymbols::java_lang_NullPointerException(), "Null module object");
769 }
770 if (!java_lang_Module::is_instance(module())) {
771 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
772 "module is not an instance of type java.lang.Module");
773 }
774
775 // Ensure that this is an unnamed module
776 oop name = java_lang_Module::name(module());
777 if (name != nullptr) {
778 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
779 "boot loader's unnamed module's java.lang.Module has a name");
780 }
781
782 // Validate java_base's loader is the boot loader.
783 oop loader = java_lang_Module::loader(module());
784 if (loader != nullptr) {
785 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
786 "Class loader must be the boot class loader");
787 }
788
789 log_debug(module)("set_bootloader_unnamed_module(): recording unnamed module for boot loader");
790
791 // Set java.lang.Module for the boot loader's unnamed module
792 ClassLoaderData* boot_loader_data = ClassLoaderData::the_null_class_loader_data();
793 ModuleEntry* unnamed_module = boot_loader_data->unnamed_module();
794 assert(unnamed_module != nullptr, "boot loader's unnamed ModuleEntry not defined");
795 unnamed_module->set_module(boot_loader_data->add_handle(module));
796 // Store pointer to the ModuleEntry in the unnamed module's java.lang.Module object.
797 java_lang_Module::set_module_entry(module(), unnamed_module);
798 }
799
800 void Modules::add_module_exports(Handle from_module, jstring package_name, Handle to_module, TRAPS) {
801 check_cds_restrictions(from_module, to_module, CHECK);
802
803 if (package_name == nullptr) {
804 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
805 "package is null");
806 }
807 if (from_module.is_null()) {
808 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
809 "from_module is null");
810 }
811 ModuleEntry* from_module_entry = get_module_entry(from_module, CHECK);
812 if (from_module_entry == nullptr) {
813 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
814 "from_module cannot be found");
815 }
816
817 // All packages in unnamed and open modules are exported by default.
818 if (!from_module_entry->is_named() || from_module_entry->is_open()) return;
819
820 ModuleEntry* to_module_entry;
821 if (to_module.is_null()) {
849 if (package_entry == nullptr) {
850 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
851 err_msg("Package %s not found in from_module %s",
852 pkg != nullptr ? pkg : "",
853 from_module_entry->name()->as_C_string()));
854 }
855
856 if (log_is_enabled(Debug, module)) {
857 log_debug(module)("add_module_exports(): package %s in module %s is exported to module %s",
858 package_entry->name()->as_C_string(),
859 from_module_entry->name()->as_C_string(),
860 to_module_entry == nullptr ? "null" :
861 to_module_entry->is_named() ?
862 to_module_entry->name()->as_C_string() : UNNAMED_MODULE);
863 }
864 }
865
866
867 void Modules::add_module_exports_qualified(Handle from_module, jstring package,
868 Handle to_module, TRAPS) {
869 check_cds_restrictions(from_module, to_module, CHECK);
870 if (to_module.is_null()) {
871 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
872 "to_module is null");
873 }
874 add_module_exports(from_module, package, to_module, CHECK);
875 }
876
877 void Modules::add_reads_module(Handle from_module, Handle to_module, TRAPS) {
878 check_cds_restrictions(from_module, to_module, CHECK);
879 if (from_module.is_null()) {
880 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
881 "from_module is null");
882 }
883
884 ModuleEntry* from_module_entry = get_module_entry(from_module, CHECK);
885 if (from_module_entry == nullptr) {
886 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
887 "from_module is not valid");
888 }
889
890 ModuleEntry* to_module_entry;
891 if (!to_module.is_null()) {
892 to_module_entry = get_module_entry(to_module, CHECK);
893 if (to_module_entry == nullptr) {
894 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
895 "to_module is invalid");
896 }
897 } else {
898 to_module_entry = nullptr;
964 assert(h_loader.is_null() || java_lang_ClassLoader::is_subclass(h_loader->klass()),
965 "Class loader is not a subclass of java.lang.ClassLoader");
966 assert(package_name != nullptr, "the package_name should not be null");
967
968 if (strlen(package_name) == 0) {
969 return nullptr;
970 }
971 TempNewSymbol package_sym = SymbolTable::new_symbol(package_name);
972 const PackageEntry* const pkg_entry =
973 get_package_entry_by_name(package_sym, h_loader);
974 const ModuleEntry* const module_entry = (pkg_entry != nullptr ? pkg_entry->module() : nullptr);
975
976 if (module_entry != nullptr && module_entry->module() != nullptr && module_entry->is_named()) {
977 return module_entry->module();
978 }
979 return nullptr;
980 }
981
982 // Export package in module to all unnamed modules.
983 void Modules::add_module_exports_to_all_unnamed(Handle module, jstring package_name, TRAPS) {
984 check_cds_restrictions(Handle(), module, CHECK);
985 if (module.is_null()) {
986 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
987 "module is null");
988 }
989 if (package_name == nullptr) {
990 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
991 "package is null");
992 }
993 ModuleEntry* module_entry = get_module_entry(module, CHECK);
994 if (module_entry == nullptr) {
995 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
996 "module is invalid");
997 }
998
999 // No-op for unnamed module and open modules
1000 if (!module_entry->is_named() || module_entry->is_open())
1001 return;
1002
1003 ResourceMark rm(THREAD);
1004 char buf[128];
|