Mercurial > hg
annotate mercurial/lsprof.py @ 47169:a13f72b9ccfb
revlog: move index reading logic in a dedicated method
They are multiple motivation to do it:
* The logic is complicated enough to deserver its own method.
* We will need to reuse this once we put a docket in use.
* This split the actual reading from the processing of the read data better.
Differential Revision: https://phab.mercurial-scm.org/D10595
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Mon, 03 May 2021 12:25:56 +0200 |
parents | 9f70512ae2cf |
children | 6000f5b25c9b |
rev | line source |
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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 from .pycompat import getattr |
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7 from . import pycompat |
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8 |
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9 Profiler = _lsprof.Profiler |
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10 |
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11 # PyPy doesn't expose profiler_entry from the module. |
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12 profiler_entry = getattr(_lsprof, 'profiler_entry', None) |
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13 |
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14 __all__ = [b'profile', b'Stats'] |
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15 |
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16 |
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17 def profile(f, *args, **kwds): |
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18 """XXX docstring""" |
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19 p = Profiler() |
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20 p.enable(subcalls=True, builtins=True) |
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21 try: |
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22 f(*args, **kwds) |
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23 finally: |
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24 p.disable() |
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25 return Stats(p.getstats()) |
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26 |
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27 |
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28 class Stats(object): |
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29 """XXX docstring""" |
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30 |
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31 def __init__(self, data): |
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32 self.data = data |
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33 |
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34 def sort(self, crit="inlinetime"): |
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35 """XXX docstring""" |
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36 # profiler_entries isn't defined when running under PyPy. |
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37 if profiler_entry: |
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38 if crit not in profiler_entry.__dict__: |
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39 raise ValueError(b"Can't sort by %s" % crit) |
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40 elif self.data and not getattr(self.data[0], crit, None): |
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41 raise ValueError(b"Can't sort by %s" % crit) |
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42 |
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43 self.data.sort(key=lambda x: getattr(x, crit), reverse=True) |
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44 for e in self.data: |
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45 if e.calls: |
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46 e.calls.sort(key=lambda x: getattr(x, crit), reverse=True) |
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47 |
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48 def pprint(self, top=None, file=None, limit=None, climit=None): |
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49 """XXX docstring""" |
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50 if file is None: |
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51 file = sys.stdout |
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52 d = self.data |
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53 if top is not None: |
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54 d = d[:top] |
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55 cols = b"% 12d %12d %11.4f %11.4f %s\n" |
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56 hcols = b"% 12s %12s %12s %12s %s\n" |
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57 file.write( |
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58 hcols |
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59 % ( |
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60 b"CallCount", |
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61 b"Recursive", |
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62 b"Total(s)", |
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63 b"Inline(s)", |
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64 b"module:lineno(function)", |
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65 ) |
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66 ) |
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67 count = 0 |
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68 for e in d: |
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69 file.write( |
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70 cols |
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71 % ( |
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72 e.callcount, |
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73 e.reccallcount, |
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74 e.totaltime, |
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75 e.inlinetime, |
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76 label(e.code), |
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77 ) |
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78 ) |
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79 count += 1 |
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80 if limit is not None and count == limit: |
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81 return |
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82 ccount = 0 |
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83 if climit and e.calls: |
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84 for se in e.calls: |
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85 file.write( |
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86 cols |
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87 % ( |
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88 se.callcount, |
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89 se.reccallcount, |
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90 se.totaltime, |
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91 se.inlinetime, |
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92 b" %s" % label(se.code), |
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93 ) |
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94 ) |
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95 count += 1 |
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96 ccount += 1 |
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97 if limit is not None and count == limit: |
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98 return |
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99 if climit is not None and ccount == climit: |
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100 break |
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101 |
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102 def freeze(self): |
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103 """Replace all references to code objects with string |
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104 descriptions; this makes it possible to pickle the instance.""" |
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105 |
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106 # this code is probably rather ickier than it needs to be! |
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107 for i in range(len(self.data)): |
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108 e = self.data[i] |
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109 if not isinstance(e.code, str): |
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110 self.data[i] = type(e)((label(e.code),) + e[1:]) |
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111 if e.calls: |
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112 for j in range(len(e.calls)): |
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113 se = e.calls[j] |
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114 if not isinstance(se.code, str): |
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115 e.calls[j] = type(se)((label(se.code),) + se[1:]) |
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116 |
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117 |
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118 _fn2mod = {} |
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119 |
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120 |
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121 def label(code): |
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122 if isinstance(code, str): |
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123 if sys.version_info.major >= 3: |
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124 code = code.encode('latin-1') |
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125 return code |
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126 try: |
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127 mname = _fn2mod[code.co_filename] |
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128 except KeyError: |
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129 for k, v in list(pycompat.iteritems(sys.modules)): |
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130 if v is None: |
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131 continue |
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132 if not isinstance(getattr(v, '__file__', None), str): |
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133 continue |
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134 if v.__file__.startswith(code.co_filename): |
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135 mname = _fn2mod[code.co_filename] = k |
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136 break |
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137 else: |
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138 mname = _fn2mod[code.co_filename] = '<%s>' % code.co_filename |
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139 |
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140 res = '%s:%d(%s)' % (mname, code.co_firstlineno, code.co_name) |
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141 |
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142 if sys.version_info.major >= 3: |
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143 res = res.encode('latin-1') |
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144 |
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145 return res |