/*

 * Copyright (c) 2014, 2018, 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#include "precompiled.hpp"

#include "utilities/macros.hpp"

#if INCLUDE_CDS

#include "runtime/os.hpp"

#include "memory/filemap.hpp"

#include "memory/allocation.hpp"

#include "memory/allocation.inline.hpp"

#include "prims/cdsoffsets.hpp"

CDSOffsets::CDSOffsets(const char* name, int offset, CDSOffsets* next) {

  _name = NEW_C_HEAP_ARRAY(char, strlen(name) + 1, mtInternal);

  strcpy(_name, name);

  _offset = offset;

  _next = next;

}

CDSOffsets* CDSOffsets::_all = NULL;

#define ADD_NEXT(list, name, value) \

  list->add_end(new CDSOffsets(name, value, NULL))

#define CREATE_OFFSET_MAPS                                                                  \

    _all = new CDSOffsets("size_t_size", sizeof(size_t), NULL);                             \

    ADD_NEXT(_all, "FileMapHeader::_magic", offset_of(FileMapHeader, _magic));              \

    ADD_NEXT(_all, "FileMapHeader::_crc", offset_of(FileMapHeader, _crc));                  \

    ADD_NEXT(_all, "FileMapHeader::_version", offset_of(FileMapHeader, _version));          \

    ADD_NEXT(_all, "FileMapHeader::_space[0]", offset_of(FileMapHeader, _space));           \

    ADD_NEXT(_all, "CDSFileMapRegion::_crc", offset_of(CDSFileMapRegion, _crc));            \

    ADD_NEXT(_all, "CDSFileMapRegion::_used", offset_of(CDSFileMapRegion, _used));          \

    ADD_NEXT(_all, "FileMapHeader::_paths_misc_info_size", offset_of(FileMapHeader, _paths_misc_info_size)); \

    ADD_NEXT(_all, "file_header_size", sizeof(FileMapHeader));                              \

    ADD_NEXT(_all, "CDSFileMapRegion_size", sizeof(CDSFileMapRegion));

int CDSOffsets::find_offset(const char* name) {

  if (_all == NULL) {

    CREATE_OFFSET_MAPS

  }

  CDSOffsets* it = _all;

  while(it) {

    if (!strcmp(name, it->get_name())) {

      return it->get_offset();

    }

    it = it->next();

  }

  return -1; // not found

}

void CDSOffsets::add_end(CDSOffsets* n) {

  CDSOffsets* p = this;

  while(p && p->_next) { p = p->_next; }

  p->_next = n;

}

#endif // INCLUDE_CDS