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/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "classfile/classFileParser.hpp"
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#include "classfile/classLoader.hpp"
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#include "classfile/classLoaderData.inline.hpp"
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#include "classfile/javaAssertions.hpp"
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#include "classfile/javaClasses.hpp"
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#include "classfile/javaClasses.inline.hpp"
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#include "classfile/moduleEntry.hpp"
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#include "classfile/modules.hpp"
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#include "classfile/packageEntry.hpp"
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#include "classfile/stringTable.hpp"
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#include "classfile/symbolTable.hpp"
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#include "classfile/vmSymbols.hpp"
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#include "logging/log.hpp"
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#include "memory/resourceArea.hpp"
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#include "oops/instanceKlass.hpp"
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#include "oops/objArrayKlass.hpp"
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#include "oops/objArrayOop.inline.hpp"
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#include "runtime/arguments.hpp"
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#include "runtime/handles.inline.hpp"
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#include "runtime/javaCalls.hpp"
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#include "runtime/reflection.hpp"
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#include "utilities/utf8.hpp"
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static bool verify_module_name(char *module_name) {
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if (module_name == NULL) return false;
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int len = (int)strlen(module_name);
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return (len > 0 && len <= Symbol::max_length() &&
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UTF8::is_legal_utf8((unsigned char *)module_name, len, false) &&
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ClassFileParser::verify_unqualified_name(module_name, len,
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ClassFileParser::LegalModule));
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}
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bool Modules::verify_package_name(char *package_name) {
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if (package_name == NULL) return false;
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int len = (int)strlen(package_name);
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return (len > 0 && len <= Symbol::max_length() &&
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UTF8::is_legal_utf8((unsigned char *)package_name, len, false) &&
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ClassFileParser::verify_unqualified_name(package_name, len,
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ClassFileParser::LegalClass));
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}
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static char* get_module_name(oop module, TRAPS) {
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oop name_oop = java_lang_reflect_Module::name(module);
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if (name_oop == NULL) {
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THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), "Null module name");
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}
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char* module_name = java_lang_String::as_utf8_string(name_oop);
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if (!verify_module_name(module_name)) {
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THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(),
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err_msg("Invalid module name: %s",
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module_name != NULL ? module_name : "NULL"));
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}
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return module_name;
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}
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static const char* get_module_version(jstring version) {
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if (version == NULL) {
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return NULL;
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}
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return java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(version));
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}
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static ModuleEntryTable* get_module_entry_table(Handle h_loader, TRAPS) {
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// This code can be called during start-up, before the classLoader's classLoader data got
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// created. So, call register_loader() to make sure the classLoader data gets created.
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ClassLoaderData *loader_cld = SystemDictionary::register_loader(h_loader, CHECK_NULL);
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return loader_cld->modules();
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}
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static PackageEntryTable* get_package_entry_table(Handle h_loader, TRAPS) {
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// This code can be called during start-up, before the classLoader's classLoader data got
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// created. So, call register_loader() to make sure the classLoader data gets created.
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ClassLoaderData *loader_cld = SystemDictionary::register_loader(h_loader, CHECK_NULL);
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return loader_cld->packages();
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}
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static ModuleEntry* get_module_entry(jobject module, TRAPS) {
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Handle module_h(THREAD, JNIHandles::resolve(module));
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if (!java_lang_reflect_Module::is_instance(module_h())) {
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THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Bad module object");
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}
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return java_lang_reflect_Module::module_entry(module_h(), CHECK_NULL);
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}
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static PackageEntry* get_package_entry(ModuleEntry* module_entry, jstring package, TRAPS) {
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ResourceMark rm(THREAD);
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if (package == NULL) return NULL;
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const char *package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
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if (package_name == NULL) return NULL;
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TempNewSymbol pkg_symbol = SymbolTable::new_symbol(package_name, CHECK_NULL);
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PackageEntryTable* package_entry_table = module_entry->loader()->packages();
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assert(package_entry_table != NULL, "Unexpected null package entry table");
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return package_entry_table->lookup_only(pkg_symbol);
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}
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static PackageEntry* get_package_entry_by_name(Symbol* package,
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Handle h_loader,
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TRAPS) {
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if (package != NULL) {
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ResourceMark rm(THREAD);
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if (Modules::verify_package_name(package->as_C_string())) {
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PackageEntryTable* const package_entry_table =
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get_package_entry_table(h_loader, CHECK_NULL);
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assert(package_entry_table != NULL, "Unexpected null package entry table");
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return package_entry_table->lookup_only(package);
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}
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}
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return NULL;
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}
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// Check if -Xpatch:<dirs> was specified. If so, prepend each <dir>/module_name,
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// if it exists, to bootpath so boot loader can find the class files. Also, if
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// using exploded modules, append <java.home>/modules/module_name, if it exists,
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// to bootpath so that its class files can be found by the boot loader.
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static void add_to_boot_loader_list(char *module_name, TRAPS) {
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// java.base should be handled by argument parsing.
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assert(strcmp(module_name, "java.base") != 0, "Unexpected java.base module name");
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char file_sep = os::file_separator()[0];
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size_t module_len = strlen(module_name);
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// If -Xpatch is set then add <patch-dir>/module_name paths.
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char** patch_dirs = Arguments::patch_dirs();
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if (patch_dirs != NULL) {
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int dir_count = Arguments::patch_dirs_count();
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for (int x = 0; x < dir_count; x++) {
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// Really shouldn't be NULL, but check can't hurt
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if (patch_dirs[x] != NULL) {
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size_t len = strlen(patch_dirs[x]);
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if (len != 0) { // Ignore empty strings.
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len = len + module_len + 2;
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char* prefix_path = NEW_C_HEAP_ARRAY(char, len, mtInternal);
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jio_snprintf(prefix_path, len, "%s%c%s", patch_dirs[x], file_sep, module_name);
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// See if Xpatch module path exists.
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struct stat st;
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if ((os::stat(prefix_path, &st) != 0)) {
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FREE_C_HEAP_ARRAY(char, prefix_path);
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} else {
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{
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HandleMark hm;
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Handle loader_lock = Handle(THREAD, SystemDictionary::system_loader_lock());
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ObjectLocker ol(loader_lock, THREAD);
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ClassLoader::prepend_to_list(prefix_path);
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}
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log_info(classload)("opened: -Xpatch %s", prefix_path);
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}
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}
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}
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}
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}
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// If "modules" jimage does not exist then assume exploded form
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// ${java.home}/modules/<module-name>
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char* path = NULL;
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if (!ClassLoader::has_jimage()) {
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const char* home = Arguments::get_java_home();
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size_t len = strlen(home) + module_len + 32;
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path = NEW_C_HEAP_ARRAY(char, len, mtInternal);
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jio_snprintf(path, len, "%s%cmodules%c%s", home, file_sep, file_sep, module_name);
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struct stat st;
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// See if exploded module path exists.
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if ((os::stat(path, &st) != 0)) {
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FREE_C_HEAP_ARRAY(char, path);
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path = NULL;
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}
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}
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if (path != NULL) {
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HandleMark hm;
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Handle loader_lock = Handle(THREAD, SystemDictionary::system_loader_lock());
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ObjectLocker ol(loader_lock, THREAD);
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log_info(classload)("opened: %s", path);
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ClassLoader::add_to_list(path);
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}
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}
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bool Modules::is_package_defined(Symbol* package, Handle h_loader, TRAPS) {
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PackageEntry* res = get_package_entry_by_name(package, h_loader, CHECK_false);
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return res != NULL;
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}
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static void define_javabase_module(jobject module, jstring version,
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jstring location, jobjectArray packages, TRAPS) {
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ResourceMark rm(THREAD);
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Handle module_handle(THREAD, JNIHandles::resolve(module));
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// Obtain java.base's module version
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const char* module_version = get_module_version(version);
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TempNewSymbol version_symbol;
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if (module_version != NULL) {
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version_symbol = SymbolTable::new_symbol(module_version, CHECK);
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} else {
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version_symbol = NULL;
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}
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// Obtain java.base's location
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const char* module_location = NULL;
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TempNewSymbol location_symbol = NULL;
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if (location != NULL) {
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module_location =
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java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(location));
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if (module_location != NULL) {
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location_symbol = SymbolTable::new_symbol(module_location, CHECK);
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}
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}
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objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
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objArrayHandle packages_h(THREAD, packages_oop);
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int num_packages = (packages_h == NULL ? 0 : packages_h->length());
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// Check that the list of packages has no duplicates and that the
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// packages are syntactically ok.
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GrowableArray<Symbol*>* pkg_list = new GrowableArray<Symbol*>(num_packages);
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for (int x = 0; x < num_packages; x++) {
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oop string_obj = packages_h->obj_at(x);
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if (string_obj == NULL || !string_obj->is_a(SystemDictionary::String_klass())) {
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THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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"Bad package name for module: java.base");
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}
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char *package_name = java_lang_String::as_utf8_string(string_obj);
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if (!Modules::verify_package_name(package_name)) {
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THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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err_msg("Invalid package name: %s for module: java.base", package_name));
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}
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Symbol* pkg_symbol = SymbolTable::new_symbol(package_name, CHECK);
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// append_if_missing() returns FALSE if entry already exists.
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if (!pkg_list->append_if_missing(pkg_symbol)) {
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THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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err_msg("Duplicate package name: %s for module java.base",
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package_name));
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}
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}
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// Validate java_base's loader is the boot loader.
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oop loader = java_lang_reflect_Module::loader(module_handle());
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if (loader != NULL) {
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THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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"Class loader must be the boot class loader");
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}
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Handle h_loader = Handle(THREAD, loader);
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// Ensure the boot loader's PackageEntryTable has been created
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PackageEntryTable* package_table = get_package_entry_table(h_loader, CHECK);
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assert(pkg_list->length() == 0 || package_table != NULL, "Bad package_table");
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// Ensure java.base's ModuleEntry has been created
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assert(ModuleEntryTable::javabase_module() != NULL, "No ModuleEntry for java.base");
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{
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MutexLocker m1(Module_lock, THREAD);
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// Verify that all java.base packages created during bootstrapping are in
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// pkg_list. If any are not in pkg_list, than a non-java.base class was
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// loaded erroneously pre java.base module definition.
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package_table->verify_javabase_packages(pkg_list);
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// loop through and add any new packages for java.base
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PackageEntry* pkg;
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for (int x = 0; x < pkg_list->length(); x++) {
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// Some of java.base's packages were added early in bootstrapping, ignore duplicates.
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if (package_table->lookup_only(pkg_list->at(x)) == NULL) {
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pkg = package_table->locked_create_entry_or_null(pkg_list->at(x), ModuleEntryTable::javabase_module());
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assert(pkg != NULL, "Unable to create a java.base package entry");
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}
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// Unable to have a GrowableArray of TempNewSymbol. Must decrement the refcount of
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// the Symbol* that was created above for each package. The refcount was incremented
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// by SymbolTable::new_symbol and as well by the PackageEntry creation.
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pkg_list->at(x)->decrement_refcount();
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}
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// Finish defining java.base's ModuleEntry
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ModuleEntryTable::finalize_javabase(module_handle, version_symbol, location_symbol);
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}
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log_debug(modules)("define_javabase_module(): Definition of module: java.base,"
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" version: %s, location: %s, package #: %d",
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module_version != NULL ? module_version : "NULL",
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module_location != NULL ? module_location : "NULL",
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pkg_list->length());
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// packages defined to java.base
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for (int x = 0; x < pkg_list->length(); x++) {
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log_trace(modules)("define_javabase_module(): creation of package %s for module java.base",
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(pkg_list->at(x))->as_C_string());
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}
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// Patch any previously loaded classes' module field with java.base's jlr.Module.
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ModuleEntryTable::patch_javabase_entries(module_handle);
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}
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void Modules::define_module(jobject module, jstring version,
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jstring location, jobjectArray packages, TRAPS) {
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ResourceMark rm(THREAD);
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if (module == NULL) {
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THROW_MSG(vmSymbols::java_lang_NullPointerException(), "Null module object");
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}
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Handle module_handle(THREAD, JNIHandles::resolve(module));
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if (!java_lang_reflect_Module::is_subclass(module_handle->klass())) {
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THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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"module is not a subclass of java.lang.reflect.Module");
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}
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char* module_name = get_module_name(module_handle(), CHECK);
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if (module_name == NULL) {
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THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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"Module name cannot be null");
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}
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// Special handling of java.base definition
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if (strcmp(module_name, "java.base") == 0) {
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define_javabase_module(module, version, location, packages, CHECK);
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return;
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}
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const char* module_version = get_module_version(version);
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objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
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objArrayHandle packages_h(THREAD, packages_oop);
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int num_packages = (packages_h == NULL ? 0 : packages_h->length());
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// Check that the list of packages has no duplicates and that the
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// packages are syntactically ok.
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GrowableArray<Symbol*>* pkg_list = new GrowableArray<Symbol*>(num_packages);
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for (int x = 0; x < num_packages; x++) {
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oop string_obj = packages_h->obj_at(x);
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if (string_obj == NULL || !string_obj->is_a(SystemDictionary::String_klass())) {
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THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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err_msg("Bad package name for module: %s", module_name));
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}
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char *package_name = java_lang_String::as_utf8_string(string_obj);
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|
361 |
if (!verify_package_name(package_name)) {
|
|
362 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
363 |
err_msg("Invalid package name: %s for module: %s",
|
|
364 |
package_name, module_name));
|
|
365 |
}
|
|
366 |
Symbol* pkg_symbol = SymbolTable::new_symbol(package_name, CHECK);
|
|
367 |
// append_if_missing() returns FALSE if entry already exists.
|
|
368 |
if (!pkg_list->append_if_missing(pkg_symbol)) {
|
|
369 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
370 |
err_msg("Duplicate package name: %s for module %s",
|
|
371 |
package_name, module_name));
|
|
372 |
}
|
|
373 |
}
|
|
374 |
|
|
375 |
oop loader = java_lang_reflect_Module::loader(module_handle());
|
|
376 |
// Make sure loader is not the sun.reflect.DelegatingClassLoader.
|
|
377 |
if (loader != java_lang_ClassLoader::non_reflection_class_loader(loader)) {
|
|
378 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
379 |
"Class loader is an invalid delegating class loader");
|
|
380 |
}
|
|
381 |
Handle h_loader = Handle(THREAD, loader);
|
|
382 |
|
|
383 |
// Check that loader is a subclass of java.lang.ClassLoader.
|
|
384 |
if (loader != NULL && !java_lang_ClassLoader::is_subclass(h_loader->klass())) {
|
|
385 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
386 |
"Class loader is not a subclass of java.lang.ClassLoader");
|
|
387 |
}
|
|
388 |
|
|
389 |
ModuleEntryTable* module_table = get_module_entry_table(h_loader, CHECK);
|
|
390 |
assert(module_table != NULL, "module entry table shouldn't be null");
|
|
391 |
|
|
392 |
// Create symbol* entry for module name.
|
|
393 |
TempNewSymbol module_symbol = SymbolTable::new_symbol(module_name, CHECK);
|
|
394 |
|
|
395 |
int dupl_pkg_index = -1;
|
|
396 |
bool dupl_modules = false;
|
|
397 |
|
|
398 |
// Create symbol* entry for module version.
|
|
399 |
TempNewSymbol version_symbol;
|
|
400 |
if (module_version != NULL) {
|
|
401 |
version_symbol = SymbolTable::new_symbol(module_version, CHECK);
|
|
402 |
} else {
|
|
403 |
version_symbol = NULL;
|
|
404 |
}
|
|
405 |
|
|
406 |
// Create symbol* entry for module location.
|
|
407 |
const char* module_location = NULL;
|
|
408 |
TempNewSymbol location_symbol = NULL;
|
|
409 |
if (location != NULL) {
|
|
410 |
module_location =
|
|
411 |
java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(location));
|
|
412 |
if (module_location != NULL) {
|
|
413 |
location_symbol = SymbolTable::new_symbol(module_location, CHECK);
|
|
414 |
}
|
|
415 |
}
|
|
416 |
|
|
417 |
ClassLoaderData* loader_data = ClassLoaderData::class_loader_data_or_null(h_loader());
|
|
418 |
assert(loader_data != NULL, "class loader data shouldn't be null");
|
|
419 |
|
|
420 |
PackageEntryTable* package_table = NULL;
|
|
421 |
{
|
|
422 |
MutexLocker ml(Module_lock, THREAD);
|
|
423 |
|
|
424 |
if (num_packages > 0) {
|
|
425 |
package_table = get_package_entry_table(h_loader, CHECK);
|
|
426 |
assert(package_table != NULL, "Missing package_table");
|
|
427 |
|
|
428 |
// Check that none of the packages exist in the class loader's package table.
|
|
429 |
for (int x = 0; x < pkg_list->length(); x++) {
|
|
430 |
if (package_table->lookup_only(pkg_list->at(x)) != NULL) {
|
|
431 |
// This could be because the module was already defined. If so,
|
|
432 |
// report that error instead of the package error.
|
|
433 |
if (module_table->lookup_only(module_symbol) != NULL) {
|
|
434 |
dupl_modules = true;
|
|
435 |
} else {
|
|
436 |
dupl_pkg_index = x;
|
|
437 |
}
|
|
438 |
break;
|
|
439 |
}
|
|
440 |
}
|
|
441 |
} // if (num_packages > 0)...
|
|
442 |
|
|
443 |
// Add the module and its packages.
|
|
444 |
if (!dupl_modules && dupl_pkg_index == -1) {
|
|
445 |
// Create the entry for this module in the class loader's module entry table.
|
|
446 |
|
|
447 |
ModuleEntry* module_entry = module_table->locked_create_entry_or_null(module_handle, module_symbol,
|
|
448 |
version_symbol, location_symbol, loader_data);
|
|
449 |
|
|
450 |
if (module_entry == NULL) {
|
|
451 |
dupl_modules = true;
|
|
452 |
} else {
|
|
453 |
// Add the packages.
|
|
454 |
assert(pkg_list->length() == 0 || package_table != NULL, "Bad package table");
|
|
455 |
PackageEntry* pkg;
|
|
456 |
for (int y = 0; y < pkg_list->length(); y++) {
|
|
457 |
pkg = package_table->locked_create_entry_or_null(pkg_list->at(y), module_entry);
|
|
458 |
assert(pkg != NULL, "Unable to create a module's package entry");
|
|
459 |
|
|
460 |
// Unable to have a GrowableArray of TempNewSymbol. Must decrement the refcount of
|
|
461 |
// the Symbol* that was created above for each package. The refcount was incremented
|
|
462 |
// by SymbolTable::new_symbol and as well by the PackageEntry creation.
|
|
463 |
pkg_list->at(y)->decrement_refcount();
|
|
464 |
}
|
|
465 |
|
|
466 |
// Store pointer to ModuleEntry record in java.lang.reflect.Module object.
|
|
467 |
java_lang_reflect_Module::set_module_entry(module_handle(), module_entry);
|
|
468 |
}
|
|
469 |
}
|
|
470 |
} // Release the lock
|
|
471 |
|
|
472 |
// any errors ?
|
|
473 |
if (dupl_modules) {
|
|
474 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
475 |
err_msg("Module %s is already defined", module_name));
|
|
476 |
}
|
|
477 |
if (dupl_pkg_index != -1) {
|
|
478 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
479 |
err_msg("Package %s for module %s already exists for class loader",
|
|
480 |
pkg_list->at(dupl_pkg_index)->as_C_string(), module_name));
|
|
481 |
}
|
|
482 |
|
|
483 |
if (log_is_enabled(Debug, modules)) {
|
37242
|
484 |
outputStream* logst = Log(modules)::debug_stream();
|
36508
|
485 |
logst->print("define_module(): creation of module: %s, version: %s, location: %s, ",
|
|
486 |
module_name, module_version != NULL ? module_version : "NULL",
|
|
487 |
module_location != NULL ? module_location : "NULL");
|
|
488 |
loader_data->print_value_on(logst);
|
|
489 |
logst->print_cr(", package #: %d", pkg_list->length());
|
|
490 |
for (int y = 0; y < pkg_list->length(); y++) {
|
|
491 |
log_trace(modules)("define_module(): creation of package %s for module %s",
|
|
492 |
(pkg_list->at(y))->as_C_string(), module_name);
|
|
493 |
}
|
|
494 |
}
|
|
495 |
|
|
496 |
if (loader == NULL && !Universe::is_module_initialized()) {
|
|
497 |
// Now that the module is defined, if it is in the bootloader, make sure that
|
|
498 |
// its classes can be found. Check if -Xpatch:<path> was specified. If
|
|
499 |
// so prepend <path>/module_name, if it exists, to bootpath. Also, if using
|
|
500 |
// exploded modules, prepend <java.home>/modules/module_name, if it exists,
|
|
501 |
// to bootpath.
|
|
502 |
add_to_boot_loader_list(module_name, CHECK);
|
|
503 |
}
|
|
504 |
}
|
|
505 |
|
|
506 |
void Modules::set_bootloader_unnamed_module(jobject module, TRAPS) {
|
|
507 |
ResourceMark rm(THREAD);
|
|
508 |
|
|
509 |
if (module == NULL) {
|
|
510 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(), "Null module object");
|
|
511 |
}
|
|
512 |
Handle module_handle(THREAD, JNIHandles::resolve(module));
|
|
513 |
if (!java_lang_reflect_Module::is_subclass(module_handle->klass())) {
|
|
514 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
515 |
"module is not a subclass of java.lang.reflect.Module");
|
|
516 |
}
|
|
517 |
|
|
518 |
// Ensure that this is an unnamed module
|
|
519 |
oop name = java_lang_reflect_Module::name(module_handle());
|
|
520 |
if (name != NULL) {
|
|
521 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
522 |
"boot loader's unnamed module's java.lang.reflect.Module has a name");
|
|
523 |
}
|
|
524 |
|
|
525 |
// Validate java_base's loader is the boot loader.
|
|
526 |
oop loader = java_lang_reflect_Module::loader(module_handle());
|
|
527 |
if (loader != NULL) {
|
|
528 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
529 |
"Class loader must be the boot class loader");
|
|
530 |
}
|
|
531 |
Handle h_loader = Handle(THREAD, loader);
|
|
532 |
|
|
533 |
log_debug(modules)("set_bootloader_unnamed_module(): recording unnamed module for boot loader");
|
|
534 |
|
|
535 |
// Ensure the boot loader's PackageEntryTable has been created
|
|
536 |
ModuleEntryTable* module_table = get_module_entry_table(h_loader, CHECK);
|
|
537 |
|
|
538 |
// Set java.lang.reflect.Module for the boot loader's unnamed module
|
|
539 |
ModuleEntry* unnamed_module = module_table->unnamed_module();
|
|
540 |
assert(unnamed_module != NULL, "boot loader's unnamed ModuleEntry not defined");
|
|
541 |
unnamed_module->set_module(ClassLoaderData::the_null_class_loader_data()->add_handle(module_handle));
|
|
542 |
// Store pointer to the ModuleEntry in the unnamed module's java.lang.reflect.Module object.
|
|
543 |
java_lang_reflect_Module::set_module_entry(module_handle(), unnamed_module);
|
|
544 |
}
|
|
545 |
|
|
546 |
void Modules::add_module_exports(jobject from_module, jstring package, jobject to_module, TRAPS) {
|
|
547 |
if (package == NULL) {
|
|
548 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(),
|
|
549 |
"package is null");
|
|
550 |
}
|
|
551 |
if (from_module == NULL) {
|
|
552 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(),
|
|
553 |
"from_module is null");
|
|
554 |
}
|
|
555 |
ModuleEntry* from_module_entry = get_module_entry(from_module, CHECK);
|
|
556 |
if (from_module_entry == NULL) {
|
|
557 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
558 |
"from_module cannot be found");
|
|
559 |
}
|
|
560 |
|
|
561 |
// All packages in unnamed are exported by default.
|
|
562 |
if (!from_module_entry->is_named()) return;
|
|
563 |
|
|
564 |
ModuleEntry* to_module_entry;
|
|
565 |
if (to_module == NULL) {
|
|
566 |
to_module_entry = NULL; // It's an unqualified export.
|
|
567 |
} else {
|
|
568 |
to_module_entry = get_module_entry(to_module, CHECK);
|
|
569 |
if (to_module_entry == NULL) {
|
|
570 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
571 |
"to_module is invalid");
|
|
572 |
}
|
|
573 |
}
|
|
574 |
|
|
575 |
PackageEntry *package_entry = get_package_entry(from_module_entry, package, CHECK);
|
|
576 |
ResourceMark rm(THREAD);
|
|
577 |
if (package_entry == NULL) {
|
|
578 |
const char *package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
|
|
579 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
580 |
err_msg("Package %s not found in from_module %s",
|
|
581 |
package_name != NULL ? package_name : "",
|
|
582 |
from_module_entry->name()->as_C_string()));
|
|
583 |
}
|
|
584 |
if (package_entry->module() != from_module_entry) {
|
|
585 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
586 |
err_msg("Package: %s found in module %s, not in from_module: %s",
|
|
587 |
package_entry->name()->as_C_string(),
|
|
588 |
package_entry->module()->name()->as_C_string(),
|
|
589 |
from_module_entry->name()->as_C_string()));
|
|
590 |
}
|
|
591 |
|
|
592 |
log_debug(modules)("add_module_exports(): package %s in module %s is exported to module %s",
|
|
593 |
package_entry->name()->as_C_string(),
|
|
594 |
from_module_entry->name()->as_C_string(),
|
|
595 |
to_module_entry == NULL ? "NULL" :
|
|
596 |
to_module_entry->is_named() ?
|
|
597 |
to_module_entry->name()->as_C_string() : UNNAMED_MODULE);
|
|
598 |
|
|
599 |
// Do nothing if modules are the same or if package is already exported unqualifiedly.
|
|
600 |
if (from_module_entry != to_module_entry && !package_entry->is_unqual_exported()) {
|
|
601 |
package_entry->set_exported(to_module_entry);
|
|
602 |
}
|
|
603 |
}
|
|
604 |
|
|
605 |
|
|
606 |
void Modules::add_module_exports_qualified(jobject from_module, jstring package,
|
|
607 |
jobject to_module, TRAPS) {
|
|
608 |
if (to_module == NULL) {
|
|
609 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(),
|
|
610 |
"to_module is null");
|
|
611 |
}
|
|
612 |
add_module_exports(from_module, package, to_module, CHECK);
|
|
613 |
}
|
|
614 |
|
|
615 |
void Modules::add_reads_module(jobject from_module, jobject to_module, TRAPS) {
|
|
616 |
if (from_module == NULL) {
|
|
617 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(),
|
|
618 |
"from_module is null");
|
|
619 |
}
|
|
620 |
|
|
621 |
ModuleEntry* from_module_entry = get_module_entry(from_module, CHECK);
|
|
622 |
if (from_module_entry == NULL) {
|
|
623 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
624 |
"from_module is not valid");
|
|
625 |
}
|
|
626 |
|
|
627 |
ModuleEntry* to_module_entry;
|
|
628 |
if (to_module != NULL) {
|
|
629 |
to_module_entry = get_module_entry(to_module, CHECK);
|
|
630 |
if (to_module_entry == NULL) {
|
|
631 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
632 |
"to_module is invalid");
|
|
633 |
}
|
|
634 |
} else {
|
|
635 |
to_module_entry = NULL;
|
|
636 |
}
|
|
637 |
|
|
638 |
ResourceMark rm(THREAD);
|
|
639 |
log_debug(modules)("add_reads_module(): Adding read from module %s to module %s",
|
|
640 |
from_module_entry->is_named() ?
|
|
641 |
from_module_entry->name()->as_C_string() : UNNAMED_MODULE,
|
|
642 |
to_module_entry == NULL ? "all unnamed" :
|
|
643 |
(to_module_entry->is_named() ?
|
|
644 |
to_module_entry->name()->as_C_string() : UNNAMED_MODULE));
|
|
645 |
|
|
646 |
// if modules are the same or if from_module is unnamed then no need to add the read.
|
|
647 |
if (from_module_entry != to_module_entry && from_module_entry->is_named()) {
|
|
648 |
from_module_entry->add_read(to_module_entry);
|
|
649 |
}
|
|
650 |
}
|
|
651 |
|
|
652 |
jboolean Modules::can_read_module(jobject asking_module, jobject target_module, TRAPS) {
|
|
653 |
if (asking_module == NULL) {
|
|
654 |
THROW_MSG_(vmSymbols::java_lang_NullPointerException(),
|
|
655 |
"asking_module is null", JNI_FALSE);
|
|
656 |
}
|
|
657 |
|
|
658 |
ModuleEntry* asking_module_entry = get_module_entry(asking_module, CHECK_false);
|
|
659 |
if (asking_module_entry == NULL) {
|
|
660 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
|
|
661 |
"asking_module is invalid", JNI_FALSE);
|
|
662 |
}
|
|
663 |
|
|
664 |
// Calling can_read_all_unnamed() with NULL tests if a module is loose.
|
|
665 |
if (target_module == NULL) {
|
|
666 |
return asking_module_entry->can_read_all_unnamed();
|
|
667 |
}
|
|
668 |
|
|
669 |
ModuleEntry* target_module_entry = get_module_entry(target_module, CHECK_false);
|
|
670 |
if (target_module_entry == NULL) {
|
|
671 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
|
|
672 |
"target_module is invalid", JNI_FALSE);
|
|
673 |
}
|
|
674 |
|
|
675 |
ResourceMark rm(THREAD);
|
|
676 |
log_debug(modules)("can_read_module(): module %s trying to read module %s, allowed = %s",
|
|
677 |
asking_module_entry->is_named() ?
|
|
678 |
asking_module_entry->name()->as_C_string() : UNNAMED_MODULE,
|
|
679 |
target_module_entry->is_named() ?
|
|
680 |
target_module_entry->name()->as_C_string() : UNNAMED_MODULE,
|
|
681 |
BOOL_TO_STR(asking_module_entry == target_module_entry ||
|
|
682 |
(asking_module_entry->can_read_all_unnamed() &&
|
|
683 |
!target_module_entry->is_named()) ||
|
|
684 |
asking_module_entry->can_read(target_module_entry)));
|
|
685 |
|
|
686 |
// Return true if:
|
|
687 |
// 1. the modules are the same, or
|
|
688 |
// 2. the asking_module is unnamed (because unnamed modules read everybody), or
|
|
689 |
// 3. the asking_module is loose and the target module is unnamed, or
|
|
690 |
// 4. if can_read() returns true.
|
|
691 |
if (asking_module_entry == target_module_entry ||
|
|
692 |
(asking_module_entry->can_read_all_unnamed() && !target_module_entry->is_named())) {
|
|
693 |
return true;
|
|
694 |
}
|
|
695 |
return asking_module_entry->can_read(target_module_entry);
|
|
696 |
}
|
|
697 |
|
|
698 |
jboolean Modules::is_exported_to_module(jobject from_module, jstring package,
|
|
699 |
jobject to_module, TRAPS) {
|
|
700 |
if (package == NULL) {
|
|
701 |
THROW_MSG_(vmSymbols::java_lang_NullPointerException(),
|
|
702 |
"package is null", JNI_FALSE);
|
|
703 |
}
|
|
704 |
if (from_module == NULL) {
|
|
705 |
THROW_MSG_(vmSymbols::java_lang_NullPointerException(),
|
|
706 |
"from_module is null", JNI_FALSE);
|
|
707 |
}
|
|
708 |
ModuleEntry* from_module_entry = get_module_entry(from_module, CHECK_false);
|
|
709 |
if (from_module_entry == NULL) {
|
|
710 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
|
|
711 |
"from_module is invalid", JNI_FALSE);
|
|
712 |
}
|
|
713 |
ModuleEntry* to_module_entry;
|
|
714 |
if (to_module == NULL) {
|
|
715 |
THROW_MSG_(vmSymbols::java_lang_NullPointerException(),
|
|
716 |
"to_module is null", JNI_FALSE);
|
|
717 |
}
|
|
718 |
to_module_entry = get_module_entry(to_module, CHECK_false);
|
|
719 |
if (to_module_entry == NULL) {
|
|
720 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
|
|
721 |
"to_module is invalid", JNI_FALSE);
|
|
722 |
}
|
|
723 |
|
|
724 |
PackageEntry *package_entry = get_package_entry(from_module_entry, package,
|
|
725 |
CHECK_false);
|
|
726 |
ResourceMark rm(THREAD);
|
|
727 |
if (package_entry == NULL) {
|
|
728 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
|
|
729 |
err_msg("Package not found in from_module: %s",
|
|
730 |
from_module_entry->is_named() ?
|
|
731 |
from_module_entry->name()->as_C_string() : UNNAMED_MODULE),
|
|
732 |
JNI_FALSE);
|
|
733 |
}
|
|
734 |
if (package_entry->module() != from_module_entry) {
|
|
735 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
|
|
736 |
err_msg("Package: %s found in module %s, not in from_module: %s",
|
|
737 |
package_entry->name()->as_C_string(),
|
|
738 |
package_entry->module()->is_named() ?
|
|
739 |
package_entry->module()->name()->as_C_string() : UNNAMED_MODULE,
|
|
740 |
from_module_entry->is_named() ?
|
|
741 |
from_module_entry->name()->as_C_string() : UNNAMED_MODULE),
|
|
742 |
JNI_FALSE);
|
|
743 |
}
|
|
744 |
|
|
745 |
log_debug(modules)("is_exported_to_module: package %s from module %s checking"
|
|
746 |
" if exported to module %s, exported? = %s",
|
|
747 |
package_entry->name()->as_C_string(),
|
|
748 |
from_module_entry->is_named() ?
|
|
749 |
from_module_entry->name()->as_C_string() : UNNAMED_MODULE,
|
|
750 |
to_module_entry->is_named() ?
|
|
751 |
to_module_entry->name()->as_C_string() : UNNAMED_MODULE,
|
|
752 |
BOOL_TO_STR(!from_module_entry->is_named() ||
|
|
753 |
package_entry->is_unqual_exported() ||
|
|
754 |
from_module_entry == to_module_entry ||
|
|
755 |
package_entry->is_qexported_to(to_module_entry)));
|
|
756 |
|
|
757 |
// Return true if:
|
|
758 |
// 1. from_module is unnamed because unnamed modules export all their packages (by default), or
|
|
759 |
// 2. if the package is unqualifiedly exported, or
|
|
760 |
// 3. if the modules are the same, or
|
|
761 |
// 4. if the package is exported to to_module
|
|
762 |
return (!from_module_entry->is_named() ||
|
|
763 |
package_entry->is_unqual_exported() ||
|
|
764 |
from_module_entry == to_module_entry ||
|
|
765 |
package_entry->is_qexported_to(to_module_entry));
|
|
766 |
}
|
|
767 |
|
|
768 |
// This method is called by JFR and JNI.
|
|
769 |
jobject Modules::get_module(jclass clazz, TRAPS) {
|
|
770 |
assert(ModuleEntryTable::javabase_defined(), "Attempt to call get_module before java.base is defined");
|
|
771 |
|
|
772 |
if (clazz == NULL) {
|
|
773 |
THROW_MSG_(vmSymbols::java_lang_NullPointerException(),
|
|
774 |
"class is null", JNI_FALSE);
|
|
775 |
}
|
|
776 |
oop mirror = JNIHandles::resolve_non_null(clazz);
|
|
777 |
if (mirror == NULL) {
|
|
778 |
log_debug(modules)("get_module(): no mirror, returning NULL");
|
|
779 |
return NULL;
|
|
780 |
}
|
|
781 |
if (!java_lang_Class::is_instance(mirror)) {
|
|
782 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
|
|
783 |
"Invalid class", JNI_FALSE);
|
|
784 |
}
|
|
785 |
|
|
786 |
oop module = java_lang_Class::module(mirror);
|
|
787 |
|
|
788 |
assert(module != NULL, "java.lang.Class module field not set");
|
|
789 |
assert(java_lang_reflect_Module::is_subclass(module->klass()), "Module is not a java.lang.reflect.Module");
|
|
790 |
|
|
791 |
if (log_is_enabled(Debug, modules)) {
|
|
792 |
ResourceMark rm(THREAD);
|
37242
|
793 |
outputStream* logst = Log(modules)::debug_stream();
|
36508
|
794 |
Klass* klass = java_lang_Class::as_Klass(mirror);
|
|
795 |
oop module_name = java_lang_reflect_Module::name(module);
|
|
796 |
if (module_name != NULL) {
|
|
797 |
logst->print("get_module(): module ");
|
|
798 |
java_lang_String::print(module_name, tty);
|
|
799 |
} else {
|
|
800 |
logst->print("get_module(): Unamed Module");
|
|
801 |
}
|
|
802 |
if (klass != NULL) {
|
|
803 |
logst->print_cr(" for class %s", klass->external_name());
|
|
804 |
} else {
|
|
805 |
logst->print_cr(" for primitive class");
|
|
806 |
}
|
|
807 |
}
|
|
808 |
|
|
809 |
return JNIHandles::make_local(THREAD, module);
|
|
810 |
}
|
|
811 |
|
|
812 |
|
|
813 |
jobject Modules::get_module_by_package_name(jobject loader, jstring package, TRAPS) {
|
|
814 |
ResourceMark rm(THREAD);
|
|
815 |
assert(ModuleEntryTable::javabase_defined(),
|
|
816 |
"Attempt to call get_module_from_pkg before java.base is defined");
|
|
817 |
|
|
818 |
if (NULL == package) {
|
|
819 |
THROW_MSG_(vmSymbols::java_lang_NullPointerException(),
|
|
820 |
"package is null", JNI_FALSE);
|
|
821 |
}
|
|
822 |
const char* package_str =
|
|
823 |
java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
|
|
824 |
if (NULL == package_str) {
|
|
825 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
|
|
826 |
"Invalid package", JNI_FALSE);
|
|
827 |
}
|
|
828 |
|
|
829 |
Handle h_loader (THREAD, JNIHandles::resolve(loader));
|
|
830 |
// Check that loader is a subclass of java.lang.ClassLoader.
|
|
831 |
if (loader != NULL && !java_lang_ClassLoader::is_subclass(h_loader->klass())) {
|
|
832 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
|
|
833 |
"Class loader is not a subclass of java.lang.ClassLoader", JNI_FALSE);
|
|
834 |
}
|
|
835 |
|
|
836 |
if (strlen(package_str) == 0) {
|
|
837 |
// Return the unnamed module
|
|
838 |
ModuleEntryTable* module_table = get_module_entry_table(h_loader, CHECK_NULL);
|
|
839 |
if (NULL == module_table) return NULL;
|
|
840 |
const ModuleEntry* const unnamed_module = module_table->unnamed_module();
|
|
841 |
return JNIHandles::make_local(THREAD, JNIHandles::resolve(unnamed_module->module()));
|
|
842 |
|
|
843 |
} else {
|
|
844 |
TempNewSymbol package_sym = SymbolTable::new_symbol(package_str, CHECK_NULL);
|
|
845 |
return get_module(package_sym, h_loader, CHECK_NULL);
|
|
846 |
}
|
|
847 |
return NULL;
|
|
848 |
}
|
|
849 |
|
|
850 |
|
|
851 |
// This method is called by JFR and by the above method.
|
|
852 |
jobject Modules::get_module(Symbol* package_name, Handle h_loader, TRAPS) {
|
|
853 |
const PackageEntry* const pkg_entry =
|
|
854 |
get_package_entry_by_name(package_name, h_loader, THREAD);
|
|
855 |
const ModuleEntry* const module_entry = (pkg_entry != NULL ? pkg_entry->module() : NULL);
|
|
856 |
|
|
857 |
if (module_entry != NULL &&
|
|
858 |
module_entry->module() != NULL) {
|
|
859 |
return JNIHandles::make_local(THREAD, JNIHandles::resolve(module_entry->module()));
|
|
860 |
}
|
|
861 |
|
|
862 |
return NULL;
|
|
863 |
}
|
|
864 |
|
|
865 |
void Modules::add_module_package(jobject module, jstring package, TRAPS) {
|
|
866 |
ResourceMark rm(THREAD);
|
|
867 |
|
|
868 |
if (module == NULL) {
|
|
869 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(),
|
|
870 |
"module is null");
|
|
871 |
}
|
|
872 |
if (package == NULL) {
|
|
873 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(),
|
|
874 |
"package is null");
|
|
875 |
}
|
|
876 |
ModuleEntry* module_entry = get_module_entry(module, CHECK);
|
|
877 |
if (module_entry == NULL) {
|
|
878 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
879 |
"module is invalid");
|
|
880 |
}
|
|
881 |
if (!module_entry->is_named()) {
|
|
882 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
883 |
"module cannot be an unnamed module");
|
|
884 |
}
|
|
885 |
char *package_name = java_lang_String::as_utf8_string(
|
|
886 |
JNIHandles::resolve_non_null(package));
|
|
887 |
if (package_name == NULL) {
|
|
888 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Bad package");
|
|
889 |
}
|
|
890 |
if (!verify_package_name(package_name)) {
|
|
891 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
892 |
err_msg("Invalid package name: %s", package_name));
|
|
893 |
}
|
|
894 |
|
|
895 |
log_debug(modules)("add_module_package(): Adding package %s to module %s",
|
|
896 |
package_name, module_entry->name()->as_C_string());
|
|
897 |
|
|
898 |
TempNewSymbol pkg_symbol = SymbolTable::new_symbol(package_name, CHECK);
|
|
899 |
PackageEntryTable* package_table = module_entry->loader()->packages();
|
|
900 |
assert(package_table != NULL, "Missing package_table");
|
|
901 |
|
|
902 |
bool pkg_exists = false;
|
|
903 |
{
|
|
904 |
MutexLocker ml(Module_lock, THREAD);
|
|
905 |
|
|
906 |
// Check that the package does not exist in the class loader's package table.
|
|
907 |
if (!package_table->lookup_only(pkg_symbol)) {
|
|
908 |
PackageEntry* pkg = package_table->locked_create_entry_or_null(pkg_symbol, module_entry);
|
|
909 |
assert(pkg != NULL, "Unable to create a module's package entry");
|
|
910 |
} else {
|
|
911 |
pkg_exists = true;
|
|
912 |
}
|
|
913 |
}
|
|
914 |
if (pkg_exists) {
|
|
915 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
916 |
err_msg("Package %s already exists for class loader", package_name));
|
|
917 |
}
|
|
918 |
}
|
|
919 |
|
|
920 |
// Export package in module to all unnamed modules.
|
|
921 |
void Modules::add_module_exports_to_all_unnamed(jobject module, jstring package, TRAPS) {
|
|
922 |
if (module == NULL) {
|
|
923 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(),
|
|
924 |
"module is null");
|
|
925 |
}
|
|
926 |
if (package == NULL) {
|
|
927 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(),
|
|
928 |
"package is null");
|
|
929 |
}
|
|
930 |
ModuleEntry* module_entry = get_module_entry(module, CHECK);
|
|
931 |
if (module_entry == NULL) {
|
|
932 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
933 |
"module is invalid");
|
|
934 |
}
|
|
935 |
|
|
936 |
if (module_entry->is_named()) { // No-op for unnamed module.
|
|
937 |
PackageEntry *package_entry = get_package_entry(module_entry, package, CHECK);
|
|
938 |
ResourceMark rm(THREAD);
|
|
939 |
if (package_entry == NULL) {
|
|
940 |
const char *package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
|
|
941 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
942 |
err_msg("Package %s not found in module %s",
|
|
943 |
package_name != NULL ? package_name : "",
|
|
944 |
module_entry->name()->as_C_string()));
|
|
945 |
}
|
|
946 |
if (package_entry->module() != module_entry) {
|
|
947 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
|
|
948 |
err_msg("Package: %s found in module %s, not in module: %s",
|
|
949 |
package_entry->name()->as_C_string(),
|
|
950 |
package_entry->module()->name()->as_C_string(),
|
|
951 |
module_entry->name()->as_C_string()));
|
|
952 |
}
|
|
953 |
|
|
954 |
log_debug(modules)("add_module_exports_to_all_unnamed(): package %s in module"
|
|
955 |
" %s is exported to all unnamed modules",
|
|
956 |
package_entry->name()->as_C_string(),
|
|
957 |
module_entry->name()->as_C_string());
|
|
958 |
|
|
959 |
// Mark package as exported to all unnamed modules, unless already
|
|
960 |
// unqualifiedly exported.
|
|
961 |
if (!package_entry->is_unqual_exported()) {
|
|
962 |
package_entry->set_is_exported_allUnnamed();
|
|
963 |
}
|
|
964 |
}
|
|
965 |
}
|