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comparison src/share/vm/utilities/elfStringTable.hpp @ 2022:2d4762ec74af

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7003748: Decode C stack frames when symbols are presented (PhoneHome project) Summary: Implemented in-process C native stack frame decoding when symbols are available. Reviewed-by: coleenp, never
author zgu
date Sat, 11 Dec 2010 13:20:56 -0500
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children f08d439fab8c
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1972:f95d63e2154a 2022:2d4762ec74af
1 /*
2 * Copyright (c) 1997, 2010, 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 __ELF_STRING_TABLE_HPP
26 #define __ELF_STRING_TABLE_HPP
27
28 #ifndef _WINDOWS
29
30 #include "memory/allocation.hpp"
31 #include "utilities/decoder.hpp"
32 #include "utilities/elfFile.hpp"
33
34
35 // The string table represents a string table section in an elf file.
36 // Whenever there is enough memory, it will load whole string table as
37 // one blob. Otherwise, it will load string from file when requested.
38
39 #define MAX_SYMBOL_LEN 256
40
41 class ElfStringTable: CHeapObj {
42 friend class ElfFile;
43 public:
44 ElfStringTable(FILE* file, Elf_Shdr shdr, int index);
45 ~ElfStringTable();
46
47 // section index
48 int index() { return m_index; };
49
50 // get string at specified offset
51 const char* string_at(int offset);
52
53 // get status code
54 Decoder::decoder_status get_status() { return m_status; };
55
56 protected:
57 ElfStringTable* m_next;
58
59 // section index
60 int m_index;
61
62 // holds complete string table if can
63 // allocate enough memory
64 const char* m_table;
65
66 // file contains string table
67 FILE* m_file;
68
69 // section header
70 Elf_Shdr m_shdr;
71
72 // buffer for reading individual string
73 char m_symbol[MAX_SYMBOL_LEN];
74
75 // error code
76 Decoder::decoder_status m_status;
77 };
78
79 #endif // _WINDOWS
80
81 #endif // __ELF_STRING_TABLE_HPP
82