systemDictionaryShared.hpp

/*
 * Copyright (c) 2014, 2016, 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.
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#ifndef SHARE_VM_CLASSFILE_SYSTEMDICTIONARYSHARED_HPP
#define SHARE_VM_CLASSFILE_SYSTEMDICTIONARYSHARED_HPP

#include "classfile/dictionary.hpp"
#include "classfile/systemDictionary.hpp"

class SystemDictionaryShared: public SystemDictionary {
public:
  static void initialize(TRAPS) {}
  static instanceKlassHandle find_or_load_shared_class(Symbol* class_name,
                                                       Handle class_loader,
                                                       TRAPS) {
    return instanceKlassHandle();
  }
  static void roots_oops_do(OopClosure* blk) {}
  static void oops_do(OopClosure* f) {}
  static bool is_sharing_possible(ClassLoaderData* loader_data) {
    oop class_loader = loader_data->class_loader();
    return (class_loader == NULL);
  }

  static size_t dictionary_entry_size() {
    return sizeof(DictionaryEntry);
  }
  static void init_shared_dictionary_entry(Klass* k, DictionaryEntry* entry) {}

  // The (non-application) CDS implementation supports only classes in the boot
  // class loader, which ensures that the verification dependencies are the same
  // during archive creation time and runtime. Thus we can do the dependency checks
  // entirely during archive creation time.
  static void add_verification_dependency(Klass* k, Symbol* accessor_clsname,
                                          Symbol* target_clsname) {}
  static void finalize_verification_dependencies() {}
  static bool check_verification_dependencies(Klass* k, Handle class_loader,
                                              Handle protection_domain,
                                              char** message_buffer, TRAPS) {return true;}
};

#endif // SHARE_VM_CLASSFILE_SYSTEMDICTIONARYSHARED_HPP