1 /*
2 * Copyright (c) 2014, 2019, 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 #include "precompiled.hpp"
26 #include "utilities/macros.hpp"
27 #if INCLUDE_CDS
28 #include "runtime/os.hpp"
29 #include "memory/dynamicArchive.hpp"
30 #include "memory/filemap.hpp"
31 #include "memory/allocation.hpp"
32 #include "memory/allocation.inline.hpp"
33 #include "prims/cdsoffsets.hpp"
34
CDSOffsets(const char * name,int offset,CDSOffsets * next)35 CDSOffsets::CDSOffsets(const char* name, int offset, CDSOffsets* next) {
36 _name = NEW_C_HEAP_ARRAY(char, strlen(name) + 1, mtInternal);
37 strcpy(_name, name);
38 _offset = offset;
39 _next = next;
40 }
41
42 CDSOffsets* CDSOffsets::_all = NULL;
43 #define ADD_NEXT(list, name, value) \
44 list->add_end(new CDSOffsets(name, value, NULL))
45
46 #define CREATE_OFFSET_MAPS \
47 _all = new CDSOffsets("size_t_size", sizeof(size_t), NULL); \
48 ADD_NEXT(_all, "int_size", sizeof(int)); \
49 ADD_NEXT(_all, "FileMapHeader::_magic", offset_of(FileMapHeader, _magic)); \
50 ADD_NEXT(_all, "FileMapHeader::_crc", offset_of(FileMapHeader, _crc)); \
51 ADD_NEXT(_all, "FileMapHeader::_version", offset_of(FileMapHeader, _version)); \
52 ADD_NEXT(_all, "FileMapHeader::_jvm_ident", offset_of(FileMapHeader, _jvm_ident)); \
53 ADD_NEXT(_all, "FileMapHeader::_space[0]", offset_of(FileMapHeader, _space)); \
54 ADD_NEXT(_all, "CDSFileMapRegion::_crc", offset_of(CDSFileMapRegion, _crc)); \
55 ADD_NEXT(_all, "CDSFileMapRegion::_used", offset_of(CDSFileMapRegion, _used)); \
56 ADD_NEXT(_all, "file_header_size", sizeof(FileMapHeader)); \
57 ADD_NEXT(_all, "DynamicArchiveHeader::_base_region_crc", offset_of(DynamicArchiveHeader, _base_region_crc)); \
58 ADD_NEXT(_all, "CDSFileMapRegion_size", sizeof(CDSFileMapRegion));
59
find_offset(const char * name)60 int CDSOffsets::find_offset(const char* name) {
61 if (_all == NULL) {
62 CREATE_OFFSET_MAPS
63 }
64 CDSOffsets* it = _all;
65 while(it) {
66 if (!strcmp(name, it->get_name())) {
67 return it->get_offset();
68 }
69 it = it->next();
70 }
71 return -1; // not found
72 }
73
add_end(CDSOffsets * n)74 void CDSOffsets::add_end(CDSOffsets* n) {
75 CDSOffsets* p = this;
76 while(p && p->_next) { p = p->_next; }
77 p->_next = n;
78 }
79 #endif // INCLUDE_CDS
80