author | herrick |
Wed, 27 Mar 2019 08:27:58 -0400 | |
branch | JDK-8200758-branch |
changeset 57288 | 0be43184f52a |
parent 51491 | 187c84a5efe1 |
child 54927 | 1512d88b24c6 |
permissions | -rw-r--r-- |
51477
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
1 |
/* |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
2 |
* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
4 |
* |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
5 |
* This code is free software; you can redistribute it and/or modify it |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
6 |
* under the terms of the GNU General Public License version 2 only, as |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
7 |
* published by the Free Software Foundation. |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
8 |
* |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
9 |
* This code is distributed in the hope that it will be useful, but WITHOUT |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
10 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
11 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
12 |
* version 2 for more details (a copy is included in the LICENSE file that |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
13 |
* accompanied this code). |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
14 |
* |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
15 |
* You should have received a copy of the GNU General Public License version |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
16 |
* 2 along with this work; if not, write to the Free Software Foundation, |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
17 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
18 |
* |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
19 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
20 |
* or visit www.oracle.com if you need additional information or have any |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
21 |
* questions. |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
22 |
* |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
23 |
*/ |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
24 |
|
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
25 |
#ifndef SHARE_INCLUDE_CDS_H |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
26 |
#define SHARE_INCLUDE_CDS_H |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
27 |
|
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
28 |
// This file declares the CDS data structures that are used by the HotSpot Serviceability Agent |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
29 |
// (see C sources inside src/jdk.hotspot.agent). |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
30 |
// |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
31 |
// We should use only standard C types. Do not use custom types such as bool, intx, |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
32 |
// etc, to avoid introducing unnecessary dependencies to other HotSpot type declarations. |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
33 |
// |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
34 |
// Also, this is a C header file. Do not use C++ here. |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
35 |
|
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
36 |
#define NUM_CDS_REGIONS 9 |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
37 |
#define CDS_ARCHIVE_MAGIC 0xf00baba2 |
51491
187c84a5efe1
8208658: Make CDS archived heap regions usable even if compressed oop encoding has changed
iklam
parents:
51477
diff
changeset
|
38 |
#define CURRENT_CDS_ARCHIVE_VERSION 5 |
51477
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
39 |
#define INVALID_CDS_ARCHIVE_VERSION -1 |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
40 |
|
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
41 |
struct CDSFileMapRegion { |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
42 |
int _crc; // crc checksum of the current space |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
43 |
size_t _file_offset; // sizeof(this) rounded to vm page size |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
44 |
union { |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
45 |
char* _base; // copy-on-write base address |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
46 |
size_t _offset; // offset from the compressed oop encoding base, only used |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
47 |
// by archive heap space |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
48 |
} _addr; |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
49 |
size_t _used; // for setting space top on read |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
50 |
int _read_only; // read only space? |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
51 |
int _allow_exec; // executable code in space? |
51491
187c84a5efe1
8208658: Make CDS archived heap regions usable even if compressed oop encoding has changed
iklam
parents:
51477
diff
changeset
|
52 |
void* _oopmap; // bitmap for relocating embedded oops |
187c84a5efe1
8208658: Make CDS archived heap regions usable even if compressed oop encoding has changed
iklam
parents:
51477
diff
changeset
|
53 |
size_t _oopmap_size_in_bits; |
51477
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
54 |
}; |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
55 |
|
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
56 |
struct CDSFileMapHeaderBase { |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
57 |
unsigned int _magic; // identify file type |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
58 |
int _crc; // header crc checksum |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
59 |
int _version; // must be CURRENT_CDS_ARCHIVE_VERSION |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
60 |
struct CDSFileMapRegion _space[NUM_CDS_REGIONS]; |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
61 |
}; |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
62 |
|
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
63 |
typedef struct CDSFileMapHeaderBase CDSFileMapHeaderBase; |
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
64 |
|
e77d7687c831
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent
iklam
parents:
diff
changeset
|
65 |
#endif // SHARE_INCLUDE_CDS_H |