Mercurial > cpython-lru_cache-weakref

annotate Tools/scripts/objgraph.py @ 24042:63fbbed10714 legacy-trunk

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Simplify HTTPSConnection constructor. See discussion in SF bug 458463.
author Jeremy Hylton <jeremy@alum.mit.edu>
date Fri, 28 Jun 2002 23:38:14 +0000
parents 14a27acc755a
children 8a7a2f1f88f0
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4573
73758db2f464 /usr/local/bin/python -> /usr/bin/env python
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1 #! /usr/bin/env python
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2
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3 # objgraph
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4 #
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5 # Read "nm -o" input (on IRIX: "nm -Bo") of a set of libraries or modules
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6 # and print various interesting listings, such as:
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7 #
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8 # - which names are used but not defined in the set (and used where),
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9 # - which names are defined in the set (and where),
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10 # - which modules use which other modules,
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11 # - which modules are used by which other modules.
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12 #
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13 # Usage: objgraph [-cdu] [file] ...
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14 # -c: print callers per objectfile
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15 # -d: print callees per objectfile
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16 # -u: print usage of undefined symbols
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17 # If none of -cdu is specified, all are assumed.
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18 # Use "nm -o" to generate the input (on IRIX: "nm -Bo"),
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19 # e.g.: nm -o /lib/libc.a | objgraph
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20
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21
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22 import sys
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23 import string
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24 import os
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25 import getopt
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26 import regex
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27
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28 # Types of symbols.
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29 #
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30 definitions = 'TRGDSBAEC'
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31 externals = 'UV'
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32 ignore = 'Nntrgdsbavuc'
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33
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34 # Regular expression to parse "nm -o" output.
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35 #
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36 matcher = regex.compile('\(.*\):\t?........ \(.\) \(.*\)$')
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37
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38 # Store "item" in "dict" under "key".
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39 # The dictionary maps keys to lists of items.
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40 # If there is no list for the key yet, it is created.
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41 #
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42 def store(dict, key, item):
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43 if dict.has_key(key):
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44 dict[key].append(item)
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45 else:
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46 dict[key] = [item]
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47
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48 # Return a flattened version of a list of strings: the concatenation
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49 # of its elements with intervening spaces.
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50 #
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51 def flat(list):
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52 s = ''
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53 for item in list:
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54 s = s + ' ' + item
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55 return s[1:]
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56
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57 # Global variables mapping defined/undefined names to files and back.
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58 #
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59 file2undef = {}
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60 def2file = {}
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61 file2def = {}
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62 undef2file = {}
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63
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64 # Read one input file and merge the data into the tables.
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65 # Argument is an open file.
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66 #
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67 def readinput(file):
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68 while 1:
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69 s = file.readline()
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70 if not s:
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71 break
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72 # If you get any output from this line,
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73 # it is probably caused by an unexpected input line:
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74 if matcher.search(s) < 0: s; continue # Shouldn't happen
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75 (ra, rb), (r1a, r1b), (r2a, r2b), (r3a, r3b) = matcher.regs[:4]
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76 fn, name, type = s[r1a:r1b], s[r3a:r3b], s[r2a:r2b]
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77 if type in definitions:
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78 store(def2file, name, fn)
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79 store(file2def, fn, name)
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80 elif type in externals:
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81 store(file2undef, fn, name)
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82 store(undef2file, name, fn)
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83 elif not type in ignore:
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84 print fn + ':' + name + ': unknown type ' + type
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85
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86 # Print all names that were undefined in some module and where they are
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87 # defined.
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88 #
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89 def printcallee():
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90 flist = file2undef.keys()
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91 flist.sort()
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92 for file in flist:
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93 print file + ':'
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94 elist = file2undef[file]
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95 elist.sort()
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96 for ext in elist:
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97 if len(ext) >= 8:
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98 tabs = '\t'
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99 else:
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100 tabs = '\t\t'
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101 if not def2file.has_key(ext):
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102 print '\t' + ext + tabs + ' *undefined'
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103 else:
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104 print '\t' + ext + tabs + flat(def2file[ext])
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105
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106 # Print for each module the names of the other modules that use it.
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107 #
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108 def printcaller():
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109 files = file2def.keys()
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110 files.sort()
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111 for file in files:
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112 callers = []
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113 for label in file2def[file]:
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114 if undef2file.has_key(label):
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115 callers = callers + undef2file[label]
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116 if callers:
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117 callers.sort()
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118 print file + ':'
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119 lastfn = ''
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120 for fn in callers:
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121 if fn <> lastfn:
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122 print '\t' + fn
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123 lastfn = fn
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124 else:
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125 print file + ': unused'
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126
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127 # Print undefine names and where they are used.
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128 #
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129 def printundef():
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130 undefs = {}
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131 for file in file2undef.keys():
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132 for ext in file2undef[file]:
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133 if not def2file.has_key(ext):
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134 store(undefs, ext, file)
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135 elist = undefs.keys()
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136 elist.sort()
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137 for ext in elist:
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138 print ext + ':'
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139 flist = undefs[ext]
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140 flist.sort()
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141 for file in flist:
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142 print '\t' + file
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143
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144 # Print warning messages about names defined in more than one file.
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145 #
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146 def warndups():
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147 savestdout = sys.stdout
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148 sys.stdout = sys.stderr
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149 names = def2file.keys()
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150 names.sort()
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151 for name in names:
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152 if len(def2file[name]) > 1:
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153 print 'warning:', name, 'multiply defined:',
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154 print flat(def2file[name])
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155 sys.stdout = savestdout
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156
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157 # Main program
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158 #
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159 def main():
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160 try:
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161 optlist, args = getopt.getopt(sys.argv[1:], 'cdu')
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162 except getopt.error:
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163 sys.stdout = sys.stderr
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164 print 'Usage:', os.path.basename(sys.argv[0]),
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165 print '[-cdu] [file] ...'
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166 print '-c: print callers per objectfile'
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167 print '-d: print callees per objectfile'
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168 print '-u: print usage of undefined symbols'
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169 print 'If none of -cdu is specified, all are assumed.'
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170 print 'Use "nm -o" to generate the input (on IRIX: "nm -Bo"),'
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171 print 'e.g.: nm -o /lib/libc.a | objgraph'
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172 return 1
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173 optu = optc = optd = 0
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174 for opt, void in optlist:
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175 if opt == '-u':
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176 optu = 1
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177 elif opt == '-c':
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178 optc = 1
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179 elif opt == '-d':
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180 optd = 1
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181 if optu == optc == optd == 0:
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182 optu = optc = optd = 1
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183 if not args:
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184 args = ['-']
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185 for file in args:
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186 if file == '-':
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187 readinput(sys.stdin)
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188 else:
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189 readinput(open(file, 'r'))
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190 #
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191 warndups()
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192 #
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193 more = (optu + optc + optd > 1)
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194 if optd:
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195 if more:
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196 print '---------------All callees------------------'
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197 printcallee()
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198 if optu:
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199 if more:
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200 print '---------------Undefined callees------------'
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201 printundef()
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202 if optc:
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203 if more:
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204 print '---------------All Callers------------------'
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205 printcaller()
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206 return 0
274
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207
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208 # Call the main program.
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209 # Use its return value as exit status.
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210 # Catch interrupts to avoid stack trace.
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211 #
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212 try:
15930
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213 sys.exit(main())
274
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214 except KeyboardInterrupt:
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215 sys.exit(1)