1 /* |
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2 * Copyright (c) 2001, 2011, 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. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 #include <stdarg.h> |
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27 #include <stdio.h> |
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28 #include <stdlib.h> |
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29 #include <string.h> |
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30 #include <limits.h> |
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31 |
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32 #include <sys/stat.h> |
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33 |
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34 #ifdef _MSC_VER |
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35 #include <direct.h> |
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36 #include <io.h> |
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37 #include <process.h> |
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38 #else |
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39 #include <unistd.h> |
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40 #endif |
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41 |
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42 #include "constants.h" |
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43 #include "defines.h" |
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44 #include "bytes.h" |
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45 #include "utils.h" |
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46 |
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47 #include "unpack.h" |
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48 |
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49 void* must_malloc(size_t size) { |
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50 size_t msize = size; |
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51 #ifdef USE_MTRACE |
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52 if (msize >= 0 && msize < sizeof(int)) |
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53 msize = sizeof(int); // see 0xbaadf00d below |
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54 #endif |
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55 void* ptr = (msize > PSIZE_MAX || msize <= 0) ? null : malloc(msize); |
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56 if (ptr != null) { |
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57 memset(ptr, 0, size); |
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58 } else { |
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59 unpack_abort(ERROR_ENOMEM); |
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60 } |
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61 mtrace('m', ptr, size); |
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62 return ptr; |
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63 } |
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64 |
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65 void mkdirs(int oklen, char* path) { |
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66 |
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67 if (strlen(path) <= (size_t)oklen) return; |
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68 char dir[PATH_MAX]; |
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69 |
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70 strcpy(dir, path); |
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71 char* slash = strrchr(dir, '/'); |
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72 if (slash == 0) return; |
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73 *slash = 0; |
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74 mkdirs(oklen, dir); |
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75 MKDIR(dir); |
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76 } |
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77 |
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78 |
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79 #ifndef PRODUCT |
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80 void breakpoint() { } // hook for debugger |
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81 int assert_failed(const char* p) { |
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82 char message[1<<12]; |
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83 sprintf(message, "@assert failed: %s\n", p); |
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84 fprintf(stdout, 1+message); |
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85 breakpoint(); |
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86 unpack_abort(message); |
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87 return 0; |
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88 } |
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89 #endif |
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90 |
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91 void unpack_abort(const char* msg, unpacker* u) { |
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92 if (msg == null) msg = "corrupt pack file or internal error"; |
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93 if (u == null) |
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94 u = unpacker::current(); |
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95 if (u == null) { |
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96 fprintf(stderr, "Error: unpacker: %s\n", msg); |
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97 ::abort(); |
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98 return; |
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99 } |
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100 u->abort(msg); |
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101 } |
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102 |
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103 bool unpack_aborting(unpacker* u) { |
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104 if (u == null) |
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105 u = unpacker::current(); |
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106 if (u == null) { |
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107 fprintf(stderr, "Error: unpacker: no current instance\n"); |
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108 ::abort(); |
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109 return true; |
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110 } |
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111 return u->aborting(); |
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112 } |
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113 |
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114 #ifdef USE_MTRACE |
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115 // Use this occasionally for detecting storage leaks in unpack. |
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116 void mtrace(char c, void* ptr, size_t size) { |
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117 if (c == 'f') *(int*)ptr = 0xbaadf00d; |
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118 static FILE* mtfp; |
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119 if (mtfp == (FILE*)-1) return; |
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120 if (mtfp == null) { |
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121 if (getenv("USE_MTRACE") == null) { |
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122 mtfp = (FILE*)-1; |
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123 return; |
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124 } |
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125 char fname[1024]; |
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126 sprintf(fname, "mtr%d.txt", getpid()); |
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127 mtfp = fopen(fname, "w"); |
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128 if (mtfp == null) |
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129 mtfp = stdout; |
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130 } |
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131 fprintf(mtfp, "%c %p %p\n", c, ptr, (void*)size); |
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132 } |
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133 |
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134 /* # Script for processing memory traces. |
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135 # It should report only a limited number (2) of "suspended" blocks, |
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136 # even if a large number of archive segments are processed. |
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137 # It should report no "leaked" blocks at all. |
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138 nawk < mtr*.txt ' |
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139 function checkleaks(what) { |
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140 nd = 0 |
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141 for (ptr in allocated) { |
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142 if (allocated[ptr] == 1) { |
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143 print NR ": " what " " ptr |
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144 #allocated[ptr] = 0 # stop the dangle |
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145 nd++ |
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146 } |
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147 } |
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148 if (nd > 0) print NR ": count " what " " nd |
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149 } |
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150 |
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151 /^[mfr]/ { |
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152 ptr = $2 |
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153 a1 = ($1 == "m")? 1: 0 |
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154 a0 = 0+allocated[ptr] |
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155 allocated[ptr] = a1 |
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156 if (a0 + a1 != 1) { |
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157 if (a0 == 0 && a1 == 0) |
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158 print NR ": double free " ptr |
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159 else if (a0 == 1 && a1 == 1) |
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160 print NR ": double malloc " ptr |
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161 else |
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162 print NR ": oddity " $0 |
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163 } |
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164 next |
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165 } |
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166 |
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167 /^s/ { |
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168 checkleaks("suspended") |
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169 next |
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170 } |
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171 |
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172 { |
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173 print NR ": unrecognized " $0 |
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174 } |
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175 END { |
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176 checkleaks("leaked") |
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177 } |
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178 ' |
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179 */ |
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180 #endif // USE_MTRACE |
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