| /* |
| * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "classfile/classFileParser.hpp" |
| #include "classfile/classLoader.hpp" |
| #include "classfile/classLoaderData.inline.hpp" |
| #include "classfile/javaAssertions.hpp" |
| #include "classfile/javaClasses.hpp" |
| #include "classfile/javaClasses.inline.hpp" |
| #include "classfile/moduleEntry.hpp" |
| #include "classfile/modules.hpp" |
| #include "classfile/packageEntry.hpp" |
| #include "classfile/stringTable.hpp" |
| #include "classfile/symbolTable.hpp" |
| #include "classfile/systemDictionary.hpp" |
| #include "classfile/vmSymbols.hpp" |
| #include "logging/log.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "oops/instanceKlass.hpp" |
| #include "runtime/arguments.hpp" |
| #include "runtime/handles.inline.hpp" |
| #include "runtime/javaCalls.hpp" |
| #include "runtime/reflection.hpp" |
| #include "utilities/stringUtils.hpp" |
| #include "utilities/utf8.hpp" |
| |
| static bool verify_module_name(const char *module_name) { |
| if (module_name == NULL) return false; |
| int len = (int)strlen(module_name); |
| return (len > 0 && len <= Symbol::max_length()); |
| } |
| |
| bool Modules::verify_package_name(const char* package_name) { |
| if (package_name == NULL) return false; |
| int len = (int)strlen(package_name); |
| return (len > 0 && len <= Symbol::max_length() && |
| UTF8::is_legal_utf8((const unsigned char *)package_name, len, false) && |
| ClassFileParser::verify_unqualified_name(package_name, len, |
| ClassFileParser::LegalClass)); |
| } |
| |
| static char* get_module_name(oop module, TRAPS) { |
| oop name_oop = java_lang_Module::name(module); |
| if (name_oop == NULL) { |
| THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), "Null module name"); |
| } |
| char* module_name = java_lang_String::as_utf8_string(name_oop); |
| if (!verify_module_name(module_name)) { |
| THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), |
| err_msg("Invalid module name: %s", |
| module_name != NULL ? module_name : "NULL")); |
| } |
| return module_name; |
| } |
| |
| static const char* get_module_version(jstring version) { |
| if (version == NULL) { |
| return NULL; |
| } |
| return java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(version)); |
| } |
| |
| static ModuleEntryTable* get_module_entry_table(Handle h_loader, TRAPS) { |
| // This code can be called during start-up, before the classLoader's classLoader data got |
| // created. So, call register_loader() to make sure the classLoader data gets created. |
| ClassLoaderData *loader_cld = SystemDictionary::register_loader(h_loader, CHECK_NULL); |
| return loader_cld->modules(); |
| } |
| |
| static PackageEntryTable* get_package_entry_table(Handle h_loader, TRAPS) { |
| // This code can be called during start-up, before the classLoader's classLoader data got |
| // created. So, call register_loader() to make sure the classLoader data gets created. |
| ClassLoaderData *loader_cld = SystemDictionary::register_loader(h_loader, CHECK_NULL); |
| return loader_cld->packages(); |
| } |
| |
| static ModuleEntry* get_module_entry(jobject module, TRAPS) { |
| Handle module_h(THREAD, JNIHandles::resolve(module)); |
| if (!java_lang_Module::is_instance(module_h())) { |
| THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), |
| "module is not an instance of type java.lang.Module"); |
| } |
| return java_lang_Module::module_entry(module_h(), CHECK_NULL); |
| } |
| |
| static PackageEntry* get_package_entry(ModuleEntry* module_entry, const char* package_name, TRAPS) { |
| ResourceMark rm(THREAD); |
| if (package_name == NULL) return NULL; |
| TempNewSymbol pkg_symbol = SymbolTable::new_symbol(package_name, CHECK_NULL); |
| PackageEntryTable* package_entry_table = module_entry->loader_data()->packages(); |
| assert(package_entry_table != NULL, "Unexpected null package entry table"); |
| return package_entry_table->lookup_only(pkg_symbol); |
| } |
| |
| static PackageEntry* get_package_entry_by_name(Symbol* package, |
| Handle h_loader, |
| TRAPS) { |
| if (package != NULL) { |
| ResourceMark rm(THREAD); |
| if (Modules::verify_package_name(package->as_C_string())) { |
| PackageEntryTable* const package_entry_table = |
| get_package_entry_table(h_loader, CHECK_NULL); |
| assert(package_entry_table != NULL, "Unexpected null package entry table"); |
| return package_entry_table->lookup_only(package); |
| } |
| } |
| return NULL; |
| } |
| |
| bool Modules::is_package_defined(Symbol* package, Handle h_loader, TRAPS) { |
| PackageEntry* res = get_package_entry_by_name(package, h_loader, CHECK_false); |
| return res != NULL; |
| } |
| |
| static void define_javabase_module(jobject module, jstring version, |
| jstring location, const char* const* packages, |
| jsize num_packages, TRAPS) { |
| ResourceMark rm(THREAD); |
| |
| Handle module_handle(THREAD, JNIHandles::resolve(module)); |
| |
| // Obtain java.base's module version |
| const char* module_version = get_module_version(version); |
| TempNewSymbol version_symbol; |
| if (module_version != NULL) { |
| version_symbol = SymbolTable::new_symbol(module_version, CHECK); |
| } else { |
| version_symbol = NULL; |
| } |
| |
| // Obtain java.base's location |
| const char* module_location = NULL; |
| TempNewSymbol location_symbol = NULL; |
| if (location != NULL) { |
| module_location = |
| java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(location)); |
| if (module_location != NULL) { |
| location_symbol = SymbolTable::new_symbol(module_location, CHECK); |
| } |
| } |
| |
| |
| // Check that the list of packages has no duplicates and that the |
| // packages are syntactically ok. |
| GrowableArray<Symbol*>* pkg_list = new GrowableArray<Symbol*>(num_packages); |
| for (int x = 0; x < num_packages; x++) { |
| const char *package_name = packages[x]; |
| if (!Modules::verify_package_name(package_name)) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| err_msg("Invalid package name: %s for module: " JAVA_BASE_NAME, package_name)); |
| } |
| Symbol* pkg_symbol = SymbolTable::new_symbol(package_name, CHECK); |
| // append_if_missing() returns FALSE if entry already exists. |
| if (!pkg_list->append_if_missing(pkg_symbol)) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| err_msg("Duplicate package name: %s for module " JAVA_BASE_NAME, |
| package_name)); |
| } |
| } |
| |
| // Validate java_base's loader is the boot loader. |
| oop loader = java_lang_Module::loader(module_handle()); |
| if (loader != NULL) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| "Class loader must be the boot class loader"); |
| } |
| Handle h_loader = Handle(THREAD, loader); |
| |
| // Ensure the boot loader's PackageEntryTable has been created |
| PackageEntryTable* package_table = get_package_entry_table(h_loader, CHECK); |
| assert(pkg_list->length() == 0 || package_table != NULL, "Bad package_table"); |
| |
| // Ensure java.base's ModuleEntry has been created |
| assert(ModuleEntryTable::javabase_moduleEntry() != NULL, "No ModuleEntry for " JAVA_BASE_NAME); |
| |
| bool duplicate_javabase = false; |
| { |
| MutexLocker m1(Module_lock, THREAD); |
| |
| if (ModuleEntryTable::javabase_defined()) { |
| duplicate_javabase = true; |
| } else { |
| |
| // Verify that all java.base packages created during bootstrapping are in |
| // pkg_list. If any are not in pkg_list, than a non-java.base class was |
| // loaded erroneously pre java.base module definition. |
| package_table->verify_javabase_packages(pkg_list); |
| |
| // loop through and add any new packages for java.base |
| PackageEntry* pkg; |
| for (int x = 0; x < pkg_list->length(); x++) { |
| // Some of java.base's packages were added early in bootstrapping, ignore duplicates. |
| if (package_table->lookup_only(pkg_list->at(x)) == NULL) { |
| pkg = package_table->locked_create_entry_or_null(pkg_list->at(x), ModuleEntryTable::javabase_moduleEntry()); |
| assert(pkg != NULL, "Unable to create a " JAVA_BASE_NAME " package entry"); |
| } |
| // Unable to have a GrowableArray of TempNewSymbol. Must decrement the refcount of |
| // the Symbol* that was created above for each package. The refcount was incremented |
| // by SymbolTable::new_symbol and as well by the PackageEntry creation. |
| pkg_list->at(x)->decrement_refcount(); |
| } |
| |
| // Finish defining java.base's ModuleEntry |
| ModuleEntryTable::finalize_javabase(module_handle, version_symbol, location_symbol); |
| } |
| } |
| if (duplicate_javabase) { |
| THROW_MSG(vmSymbols::java_lang_InternalError(), |
| "Module " JAVA_BASE_NAME " is already defined"); |
| } |
| |
| // Only the thread that actually defined the base module will get here, |
| // so no locking is needed. |
| |
| // Patch any previously loaded class's module field with java.base's java.lang.Module. |
| ModuleEntryTable::patch_javabase_entries(module_handle); |
| |
| log_info(module, load)(JAVA_BASE_NAME " location: %s", |
| module_location != NULL ? module_location : "NULL"); |
| log_debug(module)("define_javabase_module(): Definition of module: " |
| JAVA_BASE_NAME ", version: %s, location: %s, package #: %d", |
| module_version != NULL ? module_version : "NULL", |
| module_location != NULL ? module_location : "NULL", |
| pkg_list->length()); |
| |
| // packages defined to java.base |
| for (int x = 0; x < pkg_list->length(); x++) { |
| log_trace(module)("define_javabase_module(): creation of package %s for module " JAVA_BASE_NAME, |
| (pkg_list->at(x))->as_C_string()); |
| } |
| } |
| |
| // Caller needs ResourceMark. |
| void throw_dup_pkg_exception(const char* module_name, PackageEntry* package, TRAPS) { |
| const char* package_name = package->name()->as_C_string(); |
| if (package->module()->is_named()) { |
| THROW_MSG(vmSymbols::java_lang_IllegalStateException(), |
| err_msg("Package %s for module %s is already in another module, %s, defined to the class loader", |
| package_name, module_name, package->module()->name()->as_C_string())); |
| } else { |
| THROW_MSG(vmSymbols::java_lang_IllegalStateException(), |
| err_msg("Package %s for module %s is already in the unnamed module defined to the class loader", |
| package_name, module_name)); |
| } |
| } |
| |
| void Modules::define_module(jobject module, jstring version, |
| jstring location, const char* const* packages, |
| jsize num_packages, TRAPS) { |
| ResourceMark rm(THREAD); |
| |
| if (module == NULL) { |
| THROW_MSG(vmSymbols::java_lang_NullPointerException(), "Null module object"); |
| } |
| |
| if (num_packages < 0) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| "num_packages must be >= 0"); |
| } |
| |
| if (packages == NULL && num_packages > 0) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| "num_packages should be zero if packages is null"); |
| } |
| |
| Handle module_handle(THREAD, JNIHandles::resolve(module)); |
| if (!java_lang_Module::is_instance(module_handle())) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| "module is not an instance of type java.lang.Module"); |
| } |
| |
| char* module_name = get_module_name(module_handle(), CHECK); |
| if (module_name == NULL) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| "Module name cannot be null"); |
| } |
| |
| // Special handling of java.base definition |
| if (strcmp(module_name, JAVA_BASE_NAME) == 0) { |
| define_javabase_module(module, version, location, packages, num_packages, CHECK); |
| return; |
| } |
| |
| const char* module_version = get_module_version(version); |
| |
| oop loader = java_lang_Module::loader(module_handle()); |
| // Make sure loader is not the jdk.internal.reflect.DelegatingClassLoader. |
| if (loader != java_lang_ClassLoader::non_reflection_class_loader(loader)) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| "Class loader is an invalid delegating class loader"); |
| } |
| Handle h_loader = Handle(THREAD, loader); |
| |
| // Check that the list of packages has no duplicates and that the |
| // packages are syntactically ok. |
| GrowableArray<Symbol*>* pkg_list = new GrowableArray<Symbol*>(num_packages); |
| for (int x = 0; x < num_packages; x++) { |
| const char* package_name = packages[x]; |
| if (!verify_package_name(package_name)) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| err_msg("Invalid package name: %s for module: %s", |
| package_name, module_name)); |
| } |
| |
| // Only modules defined to either the boot or platform class loader, can define a "java/" package. |
| if (!h_loader.is_null() && |
| !SystemDictionary::is_platform_class_loader(h_loader) && |
| (strncmp(package_name, JAVAPKG, JAVAPKG_LEN) == 0 && |
| (package_name[JAVAPKG_LEN] == '/' || package_name[JAVAPKG_LEN] == '\0'))) { |
| const char* class_loader_name = SystemDictionary::loader_name(h_loader()); |
| size_t pkg_len = strlen(package_name); |
| char* pkg_name = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, pkg_len); |
| strncpy(pkg_name, package_name, pkg_len); |
| StringUtils::replace_no_expand(pkg_name, "/", "."); |
| const char* msg_text1 = "Class loader (instance of): "; |
| const char* msg_text2 = " tried to define prohibited package name: "; |
| size_t len = strlen(msg_text1) + strlen(class_loader_name) + strlen(msg_text2) + pkg_len + 1; |
| char* message = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, len); |
| jio_snprintf(message, len, "%s%s%s%s", msg_text1, class_loader_name, msg_text2, pkg_name); |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), message); |
| } |
| |
| Symbol* pkg_symbol = SymbolTable::new_symbol(package_name, CHECK); |
| // append_if_missing() returns FALSE if entry already exists. |
| if (!pkg_list->append_if_missing(pkg_symbol)) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| err_msg("Duplicate package name: %s for module %s", |
| package_name, module_name)); |
| } |
| } |
| |
| ModuleEntryTable* module_table = get_module_entry_table(h_loader, CHECK); |
| assert(module_table != NULL, "module entry table shouldn't be null"); |
| |
| // Create symbol* entry for module name. |
| TempNewSymbol module_symbol = SymbolTable::new_symbol(module_name, CHECK); |
| |
| bool dupl_modules = false; |
| |
| // Create symbol* entry for module version. |
| TempNewSymbol version_symbol; |
| if (module_version != NULL) { |
| version_symbol = SymbolTable::new_symbol(module_version, CHECK); |
| } else { |
| version_symbol = NULL; |
| } |
| |
| // Create symbol* entry for module location. |
| const char* module_location = NULL; |
| TempNewSymbol location_symbol = NULL; |
| if (location != NULL) { |
| module_location = |
| java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(location)); |
| if (module_location != NULL) { |
| location_symbol = SymbolTable::new_symbol(module_location, CHECK); |
| } |
| } |
| |
| ClassLoaderData* loader_data = ClassLoaderData::class_loader_data_or_null(h_loader()); |
| assert(loader_data != NULL, "class loader data shouldn't be null"); |
| |
| PackageEntryTable* package_table = NULL; |
| PackageEntry* existing_pkg = NULL; |
| { |
| MutexLocker ml(Module_lock, THREAD); |
| |
| if (num_packages > 0) { |
| package_table = get_package_entry_table(h_loader, CHECK); |
| assert(package_table != NULL, "Missing package_table"); |
| |
| // Check that none of the packages exist in the class loader's package table. |
| for (int x = 0; x < pkg_list->length(); x++) { |
| existing_pkg = package_table->lookup_only(pkg_list->at(x)); |
| if (existing_pkg != NULL) { |
| // This could be because the module was already defined. If so, |
| // report that error instead of the package error. |
| if (module_table->lookup_only(module_symbol) != NULL) { |
| dupl_modules = true; |
| } |
| break; |
| } |
| } |
| } // if (num_packages > 0)... |
| |
| // Add the module and its packages. |
| if (!dupl_modules && existing_pkg == NULL) { |
| // Create the entry for this module in the class loader's module entry table. |
| ModuleEntry* module_entry = module_table->locked_create_entry_or_null(module_handle, module_symbol, |
| version_symbol, location_symbol, loader_data); |
| |
| if (module_entry == NULL) { |
| dupl_modules = true; |
| } else { |
| // Add the packages. |
| assert(pkg_list->length() == 0 || package_table != NULL, "Bad package table"); |
| PackageEntry* pkg; |
| for (int y = 0; y < pkg_list->length(); y++) { |
| pkg = package_table->locked_create_entry_or_null(pkg_list->at(y), module_entry); |
| assert(pkg != NULL, "Unable to create a module's package entry"); |
| |
| // Unable to have a GrowableArray of TempNewSymbol. Must decrement the refcount of |
| // the Symbol* that was created above for each package. The refcount was incremented |
| // by SymbolTable::new_symbol and as well by the PackageEntry creation. |
| pkg_list->at(y)->decrement_refcount(); |
| } |
| |
| // Store pointer to ModuleEntry record in java.lang.Module object. |
| java_lang_Module::set_module_entry(module_handle(), module_entry); |
| } |
| } |
| } // Release the lock |
| |
| // any errors ? |
| if (dupl_modules) { |
| THROW_MSG(vmSymbols::java_lang_IllegalStateException(), |
| err_msg("Module %s is already defined", module_name)); |
| } else if (existing_pkg != NULL) { |
| throw_dup_pkg_exception(module_name, existing_pkg, CHECK); |
| } |
| |
| log_info(module, load)("%s location: %s", module_name, |
| module_location != NULL ? module_location : "NULL"); |
| if (log_is_enabled(Debug, module)) { |
| outputStream* logst = Log(module)::debug_stream(); |
| logst->print("define_module(): creation of module: %s, version: %s, location: %s, ", |
| module_name, module_version != NULL ? module_version : "NULL", |
| module_location != NULL ? module_location : "NULL"); |
| loader_data->print_value_on(logst); |
| logst->print_cr(", package #: %d", pkg_list->length()); |
| for (int y = 0; y < pkg_list->length(); y++) { |
| log_trace(module)("define_module(): creation of package %s for module %s", |
| (pkg_list->at(y))->as_C_string(), module_name); |
| } |
| } |
| |
| // If the module is defined to the boot loader and an exploded build is being |
| // used, prepend <java.home>/modules/modules_name, if it exists, to the system boot class path. |
| if (loader == NULL && |
| !ClassLoader::has_jrt_entry()) { |
| ClassLoader::add_to_exploded_build_list(module_symbol, CHECK); |
| } |
| } |
| |
| void Modules::set_bootloader_unnamed_module(jobject module, TRAPS) { |
| ResourceMark rm(THREAD); |
| |
| if (module == NULL) { |
| THROW_MSG(vmSymbols::java_lang_NullPointerException(), "Null module object"); |
| } |
| Handle module_handle(THREAD, JNIHandles::resolve(module)); |
| if (!java_lang_Module::is_instance(module_handle())) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| "module is not an instance of type java.lang.Module"); |
| } |
| |
| // Ensure that this is an unnamed module |
| oop name = java_lang_Module::name(module_handle()); |
| if (name != NULL) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| "boot loader's unnamed module's java.lang.Module has a name"); |
| } |
| |
| // Validate java_base's loader is the boot loader. |
| oop loader = java_lang_Module::loader(module_handle()); |
| if (loader != NULL) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| "Class loader must be the boot class loader"); |
| } |
| Handle h_loader = Handle(THREAD, loader); |
| |
| log_debug(module)("set_bootloader_unnamed_module(): recording unnamed module for boot loader"); |
| |
| // Ensure the boot loader's PackageEntryTable has been created |
| ModuleEntryTable* module_table = get_module_entry_table(h_loader, CHECK); |
| |
| // Set java.lang.Module for the boot loader's unnamed module |
| ModuleEntry* unnamed_module = module_table->unnamed_module(); |
| assert(unnamed_module != NULL, "boot loader's unnamed ModuleEntry not defined"); |
| unnamed_module->set_module(ClassLoaderData::the_null_class_loader_data()->add_handle(module_handle)); |
| // Store pointer to the ModuleEntry in the unnamed module's java.lang.Module object. |
| java_lang_Module::set_module_entry(module_handle(), unnamed_module); |
| } |
| |
| void Modules::add_module_exports(jobject from_module, const char* package_name, jobject to_module, TRAPS) { |
| if (package_name == NULL) { |
| THROW_MSG(vmSymbols::java_lang_NullPointerException(), |
| "package is null"); |
| } |
| if (from_module == NULL) { |
| THROW_MSG(vmSymbols::java_lang_NullPointerException(), |
| "from_module is null"); |
| } |
| ModuleEntry* from_module_entry = get_module_entry(from_module, CHECK); |
| if (from_module_entry == NULL) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| "from_module cannot be found"); |
| } |
| |
| // All packages in unnamed are exported by default. |
| if (!from_module_entry->is_named()) return; |
| |
| ModuleEntry* to_module_entry; |
| if (to_module == NULL) { |
| to_module_entry = NULL; // It's an unqualified export. |
| } else { |
| to_module_entry = get_module_entry(to_module, CHECK); |
| if (to_module_entry == NULL) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| "to_module is invalid"); |
| } |
| } |
| |
| PackageEntry *package_entry = get_package_entry(from_module_entry, package_name, CHECK); |
| ResourceMark rm(THREAD); |
| if (package_entry == NULL) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| err_msg("Package %s not found in from_module %s", |
| package_name != NULL ? package_name : "", |
| from_module_entry->name()->as_C_string())); |
| } |
| if (package_entry->module() != from_module_entry) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| err_msg("Package: %s found in module %s, not in from_module: %s", |
| package_entry->name()->as_C_string(), |
| package_entry->module()->name()->as_C_string(), |
| from_module_entry->name()->as_C_string())); |
| } |
| |
| log_debug(module)("add_module_exports(): package %s in module %s is exported to module %s", |
| package_entry->name()->as_C_string(), |
| from_module_entry->name()->as_C_string(), |
| to_module_entry == NULL ? "NULL" : |
| to_module_entry->is_named() ? |
| to_module_entry->name()->as_C_string() : UNNAMED_MODULE); |
| |
| // Do nothing if modules are the same. |
| if (from_module_entry != to_module_entry) { |
| package_entry->set_exported(to_module_entry); |
| } |
| } |
| |
| |
| void Modules::add_module_exports_qualified(jobject from_module, const char* package, |
| jobject to_module, TRAPS) { |
| if (to_module == NULL) { |
| THROW_MSG(vmSymbols::java_lang_NullPointerException(), |
| "to_module is null"); |
| } |
| add_module_exports(from_module, package, to_module, CHECK); |
| } |
| |
| void Modules::add_reads_module(jobject from_module, jobject to_module, TRAPS) { |
| if (from_module == NULL) { |
| THROW_MSG(vmSymbols::java_lang_NullPointerException(), |
| "from_module is null"); |
| } |
| |
| ModuleEntry* from_module_entry = get_module_entry(from_module, CHECK); |
| if (from_module_entry == NULL) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| "from_module is not valid"); |
| } |
| |
| ModuleEntry* to_module_entry; |
| if (to_module != NULL) { |
| to_module_entry = get_module_entry(to_module, CHECK); |
| if (to_module_entry == NULL) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| "to_module is invalid"); |
| } |
| } else { |
| to_module_entry = NULL; |
| } |
| |
| ResourceMark rm(THREAD); |
| log_debug(module)("add_reads_module(): Adding read from module %s to module %s", |
| from_module_entry->is_named() ? |
| from_module_entry->name()->as_C_string() : UNNAMED_MODULE, |
| to_module_entry == NULL ? "all unnamed" : |
| (to_module_entry->is_named() ? |
| to_module_entry->name()->as_C_string() : UNNAMED_MODULE)); |
| |
| // if modules are the same or if from_module is unnamed then no need to add the read. |
| if (from_module_entry != to_module_entry && from_module_entry->is_named()) { |
| from_module_entry->add_read(to_module_entry); |
| } |
| } |
| |
| // This method is called by JFR and JNI. |
| jobject Modules::get_module(jclass clazz, TRAPS) { |
| assert(ModuleEntryTable::javabase_defined(), |
| "Attempt to call get_module before " JAVA_BASE_NAME " is defined"); |
| |
| if (clazz == NULL) { |
| THROW_MSG_(vmSymbols::java_lang_NullPointerException(), |
| "class is null", JNI_FALSE); |
| } |
| oop mirror = JNIHandles::resolve_non_null(clazz); |
| if (mirror == NULL) { |
| log_debug(module)("get_module(): no mirror, returning NULL"); |
| return NULL; |
| } |
| if (!java_lang_Class::is_instance(mirror)) { |
| THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
| "Invalid class", JNI_FALSE); |
| } |
| |
| oop module = java_lang_Class::module(mirror); |
| |
| assert(module != NULL, "java.lang.Class module field not set"); |
| assert(java_lang_Module::is_instance(module), "module is not an instance of type java.lang.Module"); |
| |
| if (log_is_enabled(Debug, module)) { |
| ResourceMark rm(THREAD); |
| outputStream* logst = Log(module)::debug_stream(); |
| Klass* klass = java_lang_Class::as_Klass(mirror); |
| oop module_name = java_lang_Module::name(module); |
| if (module_name != NULL) { |
| logst->print("get_module(): module "); |
| java_lang_String::print(module_name, tty); |
| } else { |
| logst->print("get_module(): Unamed Module"); |
| } |
| if (klass != NULL) { |
| logst->print_cr(" for class %s", klass->external_name()); |
| } else { |
| logst->print_cr(" for primitive class"); |
| } |
| } |
| |
| return JNIHandles::make_local(THREAD, module); |
| } |
| |
| |
| jobject Modules::get_module_by_package_name(jobject loader, const char* package_name, TRAPS) { |
| ResourceMark rm(THREAD); |
| assert(ModuleEntryTable::javabase_defined(), |
| "Attempt to call get_module_from_pkg before " JAVA_BASE_NAME " is defined"); |
| |
| if (package_name == NULL) { |
| THROW_MSG_(vmSymbols::java_lang_NullPointerException(), |
| "package is null", JNI_FALSE); |
| } |
| |
| Handle h_loader (THREAD, JNIHandles::resolve(loader)); |
| // Check that loader is a subclass of java.lang.ClassLoader. |
| if (loader != NULL && !java_lang_ClassLoader::is_subclass(h_loader->klass())) { |
| THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
| "Class loader is not a subclass of java.lang.ClassLoader", JNI_FALSE); |
| } |
| |
| if (strlen(package_name) == 0) { |
| // Return the unnamed module |
| ModuleEntryTable* module_table = get_module_entry_table(h_loader, CHECK_NULL); |
| if (NULL == module_table) return NULL; |
| const ModuleEntry* const unnamed_module = module_table->unnamed_module(); |
| return JNIHandles::make_local(THREAD, JNIHandles::resolve(unnamed_module->module())); |
| |
| } else { |
| TempNewSymbol package_sym = SymbolTable::new_symbol(package_name, CHECK_NULL); |
| return get_module(package_sym, h_loader, CHECK_NULL); |
| } |
| return NULL; |
| } |
| |
| |
| jobject Modules::get_named_module(Handle h_loader, const char* package_name, TRAPS) { |
| assert(ModuleEntryTable::javabase_defined(), |
| "Attempt to call get_named_module before " JAVA_BASE_NAME " is defined"); |
| assert(h_loader.is_null() || java_lang_ClassLoader::is_subclass(h_loader->klass()), |
| "Class loader is not a subclass of java.lang.ClassLoader"); |
| assert(package_name != NULL, "the package_name should not be NULL"); |
| |
| if (strlen(package_name) == 0) { |
| return NULL; |
| } |
| TempNewSymbol package_sym = SymbolTable::new_symbol(package_name, CHECK_NULL); |
| const PackageEntry* const pkg_entry = |
| get_package_entry_by_name(package_sym, h_loader, THREAD); |
| const ModuleEntry* const module_entry = (pkg_entry != NULL ? pkg_entry->module() : NULL); |
| |
| if (module_entry != NULL && module_entry->module() != NULL && module_entry->is_named()) { |
| return JNIHandles::make_local(THREAD, JNIHandles::resolve(module_entry->module())); |
| } |
| return NULL; |
| } |
| |
| |
| // This method is called by JFR and by the above method. |
| jobject Modules::get_module(Symbol* package_name, Handle h_loader, TRAPS) { |
| const PackageEntry* const pkg_entry = |
| get_package_entry_by_name(package_name, h_loader, THREAD); |
| const ModuleEntry* const module_entry = (pkg_entry != NULL ? pkg_entry->module() : NULL); |
| |
| if (module_entry != NULL && |
| module_entry->module() != NULL) { |
| return JNIHandles::make_local(THREAD, JNIHandles::resolve(module_entry->module())); |
| } |
| |
| return NULL; |
| } |
| |
| // Export package in module to all unnamed modules. |
| void Modules::add_module_exports_to_all_unnamed(jobject module, const char* package_name, TRAPS) { |
| if (module == NULL) { |
| THROW_MSG(vmSymbols::java_lang_NullPointerException(), |
| "module is null"); |
| } |
| if (package_name == NULL) { |
| THROW_MSG(vmSymbols::java_lang_NullPointerException(), |
| "package is null"); |
| } |
| ModuleEntry* module_entry = get_module_entry(module, CHECK); |
| if (module_entry == NULL) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| "module is invalid"); |
| } |
| |
| if (module_entry->is_named()) { // No-op for unnamed module. |
| PackageEntry *package_entry = get_package_entry(module_entry, package_name, CHECK); |
| ResourceMark rm(THREAD); |
| if (package_entry == NULL) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| err_msg("Package %s not found in module %s", |
| package_name != NULL ? package_name : "", |
| module_entry->name()->as_C_string())); |
| } |
| if (package_entry->module() != module_entry) { |
| THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
| err_msg("Package: %s found in module %s, not in module: %s", |
| package_entry->name()->as_C_string(), |
| package_entry->module()->name()->as_C_string(), |
| module_entry->name()->as_C_string())); |
| } |
| |
| log_debug(module)("add_module_exports_to_all_unnamed(): package %s in module" |
| " %s is exported to all unnamed modules", |
| package_entry->name()->as_C_string(), |
| module_entry->name()->as_C_string()); |
| |
| // Mark package as exported to all unnamed modules. |
| package_entry->set_is_exported_allUnnamed(); |
| } |
| } |
