Mercurial > hg > graal-jvmci-8
annotate src/share/vm/utilities/elfFile.hpp @ 6972:bd7a7ce2e264
6830717: replay of compilations would help with debugging
Summary: When java process crashed in compiler thread, repeat the compilation process will help finding root cause. This is done with using SA dump application class data and replay data from core dump, then use debug version of jvm to recompile the problematic java method.
Reviewed-by: kvn, twisti, sspitsyn
Contributed-by: yumin.qi@oracle.com
author | minqi |
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date | Mon, 12 Nov 2012 14:03:53 -0800 |
parents | b9a9ed0f8eeb |
children | 9058789475af |
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1 /* |
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2 * Copyright (c) 1997, 2012, 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 |
4803 | 25 #ifndef SHARE_VM_UTILITIES_ELF_FILE_HPP |
26 #define SHARE_VM_UTILITIES_ELF_FILE_HPP | |
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27 |
3960 | 28 #if !defined(_WINDOWS) && !defined(__APPLE__) |
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29 |
3960 | 30 #if defined(__OpenBSD__) |
31 #include <sys/exec_elf.h> | |
32 #else | |
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33 #include <elf.h> |
3960 | 34 #endif |
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35 #include <stdio.h> |
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36 |
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37 #ifdef _LP64 |
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38 |
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39 typedef Elf64_Half Elf_Half; |
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40 typedef Elf64_Word Elf_Word; |
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41 typedef Elf64_Off Elf_Off; |
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42 typedef Elf64_Addr Elf_Addr; |
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43 |
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44 typedef Elf64_Ehdr Elf_Ehdr; |
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45 typedef Elf64_Shdr Elf_Shdr; |
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46 typedef Elf64_Sym Elf_Sym; |
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47 |
3960 | 48 #if !defined(_ALLBSD_SOURCE) || defined(__APPLE__) |
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49 #define ELF_ST_TYPE ELF64_ST_TYPE |
3960 | 50 #endif |
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51 |
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52 #else |
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53 |
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54 typedef Elf32_Half Elf_Half; |
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55 typedef Elf32_Word Elf_Word; |
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56 typedef Elf32_Off Elf_Off; |
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57 typedef Elf32_Addr Elf_Addr; |
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58 |
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59 |
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60 typedef Elf32_Ehdr Elf_Ehdr; |
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61 typedef Elf32_Shdr Elf_Shdr; |
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62 typedef Elf32_Sym Elf_Sym; |
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63 |
3960 | 64 #if !defined(_ALLBSD_SOURCE) || defined(__APPLE__) |
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65 #define ELF_ST_TYPE ELF32_ST_TYPE |
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66 #endif |
3960 | 67 #endif |
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68 |
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69 #include "globalDefinitions.hpp" |
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70 #include "memory/allocation.hpp" |
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71 #include "utilities/decoder.hpp" |
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72 |
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73 |
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74 class ElfStringTable; |
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75 class ElfSymbolTable; |
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76 |
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77 |
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78 // On Solaris/Linux platforms, libjvm.so does contain all private symbols. |
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79 // ElfFile is basically an elf file parser, which can lookup the symbol |
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80 // that is the nearest to the given address. |
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81 // Beware, this code is called from vm error reporting code, when vm is already |
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82 // in "error" state, so there are scenarios, lookup will fail. We want this |
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83 // part of code to be very defensive, and bait out if anything went wrong. |
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84 |
6197 | 85 class ElfFile: public CHeapObj<mtInternal> { |
4803 | 86 friend class ElfDecoder; |
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87 public: |
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88 ElfFile(const char* filepath); |
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89 ~ElfFile(); |
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90 |
4803 | 91 bool decode(address addr, char* buf, int buflen, int* offset); |
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92 const char* filepath() { |
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93 return m_filepath; |
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94 } |
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95 |
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96 bool same_elf_file(const char* filepath) { |
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97 assert(filepath, "null file path"); |
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98 assert(m_filepath, "already out of memory"); |
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99 return (m_filepath && !strcmp(filepath, m_filepath)); |
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100 } |
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101 |
4803 | 102 NullDecoder::decoder_status get_status() { |
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103 return m_status; |
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104 } |
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105 |
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106 private: |
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107 // sanity check, if the file is a real elf file |
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108 bool is_elf_file(Elf_Ehdr&); |
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109 |
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110 // load string tables from the elf file |
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111 bool load_tables(); |
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112 |
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113 // string tables are stored in a linked list |
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114 void add_string_table(ElfStringTable* table); |
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115 |
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116 // symbol tables are stored in a linked list |
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117 void add_symbol_table(ElfSymbolTable* table); |
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118 |
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119 // return a string table at specified section index |
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120 ElfStringTable* get_string_table(int index); |
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121 |
4803 | 122 protected: |
123 ElfFile* next() const { return m_next; } | |
124 void set_next(ElfFile* file) { m_next = file; } | |
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125 |
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126 protected: |
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127 ElfFile* m_next; |
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128 |
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129 private: |
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130 // file |
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131 const char* m_filepath; |
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132 FILE* m_file; |
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133 |
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134 // Elf header |
4803 | 135 Elf_Ehdr m_elfHdr; |
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136 |
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137 // symbol tables |
4803 | 138 ElfSymbolTable* m_symbol_tables; |
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139 |
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140 // string tables |
4803 | 141 ElfStringTable* m_string_tables; |
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142 |
4803 | 143 NullDecoder::decoder_status m_status; |
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144 }; |
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145 |
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146 #endif // _WINDOWS |
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147 |
4803 | 148 #endif // SHARE_VM_UTILITIES_ELF_FILE_HPP |