hotspot/src/share/vm/classfile/classLoaderExt.hpp
author ccheung
Mon, 28 Aug 2017 15:34:04 -0700
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8186842: Use Java class loaders for creating the CDS archive Reviewed-by: coleenp, jiangli, iklam, mseledtsov Contributed-by: calvin.cheung@oracle.com, ioi.lam@oracle.com
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/*
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 * Copyright (c) 2014, 2017, 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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#ifndef SHARE_VM_CLASSFILE_CLASSLOADEREXT_HPP
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#define SHARE_VM_CLASSFILE_CLASSLOADEREXT_HPP
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#include "classfile/classLoader.hpp"
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#include "classfile/systemDictionary.hpp"
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#include "oops/instanceKlass.hpp"
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#include "runtime/handles.hpp"
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class ClassListParser;
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class ClassLoaderExt: public ClassLoader { // AllStatic
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public:
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  class Context {
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    const char* _file_name;
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  public:
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    Context(const char* class_name, const char* file_name, TRAPS) {
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      _file_name = file_name;
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    }
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    bool check(const ClassFileStream* stream, const int classpath_index) {
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      return true;
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    }
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    bool should_verify(int classpath_index) {
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      return false;
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    }
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    InstanceKlass* record_result(Symbol* class_name,
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                                 ClassPathEntry* e,
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                                 const s2 classpath_index,
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                                 InstanceKlass* result, TRAPS) {
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      if (ClassLoader::add_package(_file_name, classpath_index, THREAD)) {
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#if INCLUDE_CDS
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        if (DumpSharedSpaces) {
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          oop loader = result->class_loader();
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          s2 classloader_type = ClassLoader::BOOT_LOADER;
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          if (SystemDictionary::is_system_class_loader(loader)) {
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            classloader_type = ClassLoader::APP_LOADER;
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            ClassLoaderExt::set_has_app_classes();
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          } else if (SystemDictionary::is_platform_class_loader(loader)) {
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            classloader_type = ClassLoader::PLATFORM_LOADER;
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            ClassLoaderExt::set_has_platform_classes();
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          }
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          result->set_shared_classpath_index(classpath_index);
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          result->set_class_loader_type(classloader_type);
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        }
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#endif
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        return result;
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      } else {
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        return NULL;
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      }
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    }
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  };
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  static void add_class_path_entry(const char* path, bool check_for_duplicates,
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                                   ClassPathEntry* new_entry) {
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    ClassLoader::add_to_list(new_entry);
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  }
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  static void append_boot_classpath(ClassPathEntry* new_entry) {
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    ClassLoader::add_to_list(new_entry);
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  }
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  static void setup_search_paths() {}
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  static bool is_boot_classpath(int classpath_index) {
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   return true;
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 }
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  static Klass* load_one_class(ClassListParser* parser, TRAPS);
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#if INCLUDE_CDS
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  static void set_has_app_classes() {}
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  static void set_has_platform_classes() {}
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  static char* read_manifest(ClassPathEntry* entry, jint *manifest_size, TRAPS) {
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    return NULL;
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  }
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#endif
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};
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#endif // SHARE_VM_CLASSFILE_CLASSLOADEREXT_HPP