annotate mercurial/lsprof.py @ 34950:cffc8a22ce0c stable

merge with i18n
author Augie Fackler <augie@google.com>
date Wed, 01 Nov 2017 16:07:33 -0400
parents b1a59b80e1a3
children d4e5b2653693
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b1a59b80e1a3 lsprof: use print function
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1 from __future__ import absolute_import, print_function
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2
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3 import _lsprof
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4 import sys
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5
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6 Profiler = _lsprof.Profiler
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7
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8 # PyPy doesn't expose profiler_entry from the module.
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9 profiler_entry = getattr(_lsprof, 'profiler_entry', None)
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10
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11 __all__ = ['profile', 'Stats']
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12
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13 def profile(f, *args, **kwds):
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14 """XXX docstring"""
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15 p = Profiler()
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16 p.enable(subcalls=True, builtins=True)
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17 try:
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18 f(*args, **kwds)
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19 finally:
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20 p.disable()
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21 return Stats(p.getstats())
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23
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24 class Stats(object):
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25 """XXX docstring"""
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26
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27 def __init__(self, data):
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28 self.data = data
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29
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30 def sort(self, crit="inlinetime"):
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31 """XXX docstring"""
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32 # profiler_entries isn't defined when running under PyPy.
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33 if profiler_entry:
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34 if crit not in profiler_entry.__dict__:
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35 raise ValueError("Can't sort by %s" % crit)
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36 elif self.data and not getattr(self.data[0], crit, None):
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37 raise ValueError("Can't sort by %s" % crit)
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38
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39 self.data.sort(key=lambda x: getattr(x, crit), reverse=True)
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40 for e in self.data:
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41 if e.calls:
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42 e.calls.sort(key=lambda x: getattr(x, crit), reverse=True)
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43
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44 def pprint(self, top=None, file=None, limit=None, climit=None):
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45 """XXX docstring"""
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46 if file is None:
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47 file = sys.stdout
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48 d = self.data
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49 if top is not None:
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50 d = d[:top]
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51 cols = "% 12s %12s %11.4f %11.4f %s\n"
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52 hcols = "% 12s %12s %12s %12s %s\n"
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53 file.write(hcols % ("CallCount", "Recursive", "Total(s)",
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54 "Inline(s)", "module:lineno(function)"))
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55 count = 0
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56 for e in d:
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57 file.write(cols % (e.callcount, e.reccallcount, e.totaltime,
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58 e.inlinetime, label(e.code)))
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59 count += 1
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60 if limit is not None and count == limit:
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61 return
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62 ccount = 0
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63 if climit and e.calls:
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64 for se in e.calls:
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65 file.write(cols % (se.callcount, se.reccallcount,
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66 se.totaltime, se.inlinetime,
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67 " %s" % label(se.code)))
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68 count += 1
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69 ccount += 1
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70 if limit is not None and count == limit:
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71 return
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72 if climit is not None and ccount == climit:
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73 break
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74
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75 def freeze(self):
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76 """Replace all references to code objects with string
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77 descriptions; this makes it possible to pickle the instance."""
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78
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79 # this code is probably rather ickier than it needs to be!
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80 for i in range(len(self.data)):
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81 e = self.data[i]
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82 if not isinstance(e.code, str):
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83 self.data[i] = type(e)((label(e.code),) + e[1:])
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84 if e.calls:
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85 for j in range(len(e.calls)):
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86 se = e.calls[j]
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87 if not isinstance(se.code, str):
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88 e.calls[j] = type(se)((label(se.code),) + se[1:])
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89
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90 _fn2mod = {}
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91
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92 def label(code):
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93 if isinstance(code, str):
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94 return code
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95 try:
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96 mname = _fn2mod[code.co_filename]
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97 except KeyError:
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98 for k, v in list(sys.modules.iteritems()):
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99 if v is None:
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100 continue
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101 if not isinstance(getattr(v, '__file__', None), str):
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102 continue
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103 if v.__file__.startswith(code.co_filename):
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104 mname = _fn2mod[code.co_filename] = k
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105 break
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106 else:
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107 mname = _fn2mod[code.co_filename] = '<%s>' % code.co_filename
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108
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109 return '%s:%d(%s)' % (mname, code.co_firstlineno, code.co_name)
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110
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111
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112 if __name__ == '__main__':
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113 import os
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114 sys.argv = sys.argv[1:]
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115 if not sys.argv:
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116 print("usage: lsprof.py <script> <arguments...>", file=sys.stderr)
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117 sys.exit(2)
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118 sys.path.insert(0, os.path.abspath(os.path.dirname(sys.argv[0])))
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119 stats = profile(execfile, sys.argv[0], globals(), locals())
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120 stats.sort()
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121 stats.pprint()