1 /*
   2  * Copyright (c) 2014, 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_SHAREDCLASSUTIL_HPP
  26 #define SHARE_VM_CLASSFILE_SHAREDCLASSUTIL_HPP
  27 
  28 #include "classfile/sharedPathsMiscInfo.hpp"
  29 #include "memory/filemap.hpp"
  30 
  31 class SharedClassUtil : AllStatic {
  32 public:
  33 
  34   static SharedPathsMiscInfo* allocate_shared_paths_misc_info() {
  35     return new SharedPathsMiscInfo();
  36   }
  37 
  38   static SharedPathsMiscInfo* allocate_shared_paths_misc_info(char* buf, int size) {
  39     return new SharedPathsMiscInfo(buf, size);
  40   }
  41 
  42   static FileMapInfo::FileMapHeader* allocate_file_map_header() {
  43     return new FileMapInfo::FileMapHeader();
  44   }
  45 
  46   static size_t file_map_header_size() {
  47     return sizeof(FileMapInfo::FileMapHeader);
  48   }
  49 
  50   static size_t shared_class_path_entry_size() {
  51     return sizeof(SharedClassPathEntry);
  52   }
  53 
  54   static void update_shared_classpath(ClassPathEntry *cpe,
  55                                       SharedClassPathEntry* ent,
  56                                       time_t timestamp,
  57                                       long filesize, TRAPS) {
  58     ent->_timestamp = timestamp;
  59     ent->_filesize  = filesize;
  60   }
  61 
  62   static void initialize(TRAPS) {}
  63 
  64   inline static bool is_shared_boot_class(Klass* klass) {
  65     return (klass->_shared_class_path_index >= 0);
  66   }
  67 };
  68 
  69 #endif // SHARE_VM_CLASSFILE_SHAREDCLASSUTIL_HPP