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comparison src/share/vm/utilities/decoder.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
parents
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
26 #ifndef __DECODER_HPP
27 #define __DECODER_HPP
28
29 #include "memory/allocation.hpp"
30
31 #ifdef _WINDOWS
32 #include <windows.h>
33 #include <imagehlp.h>
34
35 // functions needed for decoding symbols
36 typedef DWORD (WINAPI *pfn_SymSetOptions)(DWORD);
37 typedef BOOL (WINAPI *pfn_SymInitialize)(HANDLE, PCTSTR, BOOL);
38 typedef BOOL (WINAPI *pfn_SymGetSymFromAddr64)(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64);
39 typedef DWORD (WINAPI *pfn_UndecorateSymbolName)(const char*, char*, DWORD, DWORD);
40
41 #else
42
43 class ElfFile;
44
45 #endif // _WINDOWS
46
47
48 class Decoder: public StackObj {
49
50 public:
51 // status code for decoding native C frame
52 enum decoder_status {
53 no_error, // successfully decoded frames
54 out_of_memory, // out of memory
55 file_invalid, // invalid elf file
56 file_not_found, // could not found symbol file (on windows), such as jvm.pdb or jvm.map
57 helper_not_found, // could not load dbghelp.dll (Windows only)
58 helper_func_error, // decoding functions not found (Windows only)
59 helper_init_error, // SymInitialize failed (Windows only)
60 symbol_not_found // could not find the symbol
61 };
62
63 public:
64 Decoder() { initialize(); };
65 ~Decoder() { uninitialize(); };
66
67 static bool can_decode_C_frame_in_vm();
68
69 static void initialize();
70 static void uninitialize();
71
72 #ifdef _WINDOWS
73 static decoder_status decode(address addr, char *buf, int buflen, int *offset);
74 #else
75 static decoder_status decode(address addr, const char* filepath, char *buf, int buflen, int *offset);
76 #endif
77
78 static bool demangle(const char* symbol, char *buf, int buflen);
79
80 static decoder_status get_status() { return _decoder_status; };
81
82 #ifndef _WINDOWS
83 private:
84 static ElfFile* get_elf_file(const char* filepath);
85 #endif // _WINDOWS
86
87
88 private:
89 static decoder_status _decoder_status;
90 static bool _initialized;
91
92 #ifdef _WINDOWS
93 static HMODULE _dbghelp_handle;
94 static bool _can_decode_in_vm;
95 static pfn_SymGetSymFromAddr64 _pfnSymGetSymFromAddr64;
96 static pfn_UndecorateSymbolName _pfnUndecorateSymbolName;
97 #else
98 static ElfFile* _opened_elf_files;
99 #endif // _WINDOWS
100 };
101
102 #endif // __DECODER_HPP