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annotate src/share/vm/utilities/decoder.hpp @ 2426:1d1603768966

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7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass Summary: Update the copyright to be 2010 on all changed files in OpenJDK Reviewed-by: ohair
author trims
date Tue, 05 Apr 2011 14:12:31 -0700
parents 2d4762ec74af
children f08d439fab8c
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1 /*
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2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25
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26 #ifndef __DECODER_HPP
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27 #define __DECODER_HPP
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28
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29 #include "memory/allocation.hpp"
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30
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31 #ifdef _WINDOWS
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32 #include <windows.h>
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33 #include <imagehlp.h>
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34
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35 // functions needed for decoding symbols
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36 typedef DWORD (WINAPI *pfn_SymSetOptions)(DWORD);
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37 typedef BOOL (WINAPI *pfn_SymInitialize)(HANDLE, PCTSTR, BOOL);
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38 typedef BOOL (WINAPI *pfn_SymGetSymFromAddr64)(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64);
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39 typedef DWORD (WINAPI *pfn_UndecorateSymbolName)(const char*, char*, DWORD, DWORD);
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40
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41 #else
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42
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43 class ElfFile;
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44
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45 #endif // _WINDOWS
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46
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47
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48 class Decoder: public StackObj {
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49
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50 public:
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51 // status code for decoding native C frame
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52 enum decoder_status {
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53 no_error, // successfully decoded frames
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54 out_of_memory, // out of memory
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55 file_invalid, // invalid elf file
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56 file_not_found, // could not found symbol file (on windows), such as jvm.pdb or jvm.map
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57 helper_not_found, // could not load dbghelp.dll (Windows only)
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58 helper_func_error, // decoding functions not found (Windows only)
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59 helper_init_error, // SymInitialize failed (Windows only)
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60 symbol_not_found // could not find the symbol
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61 };
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62
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63 public:
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64 Decoder() { initialize(); };
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65 ~Decoder() { uninitialize(); };
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66
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67 static bool can_decode_C_frame_in_vm();
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68
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69 static void initialize();
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70 static void uninitialize();
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71
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72 #ifdef _WINDOWS
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73 static decoder_status decode(address addr, char *buf, int buflen, int *offset);
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74 #else
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75 static decoder_status decode(address addr, const char* filepath, char *buf, int buflen, int *offset);
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76 #endif
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77
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78 static bool demangle(const char* symbol, char *buf, int buflen);
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79
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80 static decoder_status get_status() { return _decoder_status; };
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81
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82 #ifndef _WINDOWS
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83 private:
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84 static ElfFile* get_elf_file(const char* filepath);
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85 #endif // _WINDOWS
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86
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87
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88 private:
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89 static decoder_status _decoder_status;
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90 static bool _initialized;
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91
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92 #ifdef _WINDOWS
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93 static HMODULE _dbghelp_handle;
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94 static bool _can_decode_in_vm;
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95 static pfn_SymGetSymFromAddr64 _pfnSymGetSymFromAddr64;
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96 static pfn_UndecorateSymbolName _pfnUndecorateSymbolName;
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97 #else
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98 static ElfFile* _opened_elf_files;
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99 #endif // _WINDOWS
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100 };
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101
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102 #endif // __DECODER_HPP