1 /*
   2  * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_CLASSFILE_CLASSLOADEREXT_HPP
  26 #define SHARE_VM_CLASSFILE_CLASSLOADEREXT_HPP
  27 
  28 #include "classfile/classLoader.hpp"
  29 #include "oops/instanceKlass.hpp"
  30 #include "runtime/handles.hpp"
  31 
  32 class ClassListParser;
  33 
  34 class ClassLoaderExt: public ClassLoader { // AllStatic
  35 public:
  36 
  37   class Context {
  38     const char* _file_name;
  39   public:
  40     Context(const char* class_name, const char* file_name, TRAPS) {
  41       _file_name = file_name;
  42     }
  43 
  44     bool check(const ClassFileStream* stream, const int classpath_index) {
  45       return true;
  46     }
  47 
  48     bool should_verify(int classpath_index) {
  49       return false;
  50     }
  51 
  52     InstanceKlass* record_result(Symbol* class_name,
  53                                  ClassPathEntry* e,
  54                                  const s2 classpath_index,
  55                                  InstanceKlass* result, TRAPS) {
  56       if (ClassLoader::add_package(_file_name, classpath_index, THREAD)) {
  57 #if INCLUDE_CDS
  58         if (DumpSharedSpaces) {
  59           s2 classloader_type = ClassLoader::classloader_type(
  60                           class_name, e, classpath_index, CHECK_(result));
  61           result->set_shared_classpath_index(classpath_index);
  62           result->set_class_loader_type(classloader_type);
  63         }
  64 #endif
  65         return result;
  66       } else {
  67         return NULL;
  68       }
  69     }
  70   };
  71 
  72 
  73   static void add_class_path_entry(const char* path, bool check_for_duplicates,
  74                                    ClassPathEntry* new_entry) {
  75     ClassLoader::add_to_list(new_entry);
  76   }
  77   static void append_boot_classpath(ClassPathEntry* new_entry) {
  78     ClassLoader::add_to_list(new_entry);
  79   }
  80   static void setup_search_paths() {}
  81   static bool is_boot_classpath(int classpath_index) {
  82    return true;
  83  }
  84   static Klass* load_one_class(ClassListParser* parser, TRAPS);
  85 };
  86 
  87 #endif // SHARE_VM_CLASSFILE_CLASSLOADEREXT_HPP