Mercurial > hg
annotate mercurial/lsprof.py @ 47387:75e1104f23a2
revlog: use dedicated code for reading sidedata
We are about to introduce a new, dedicated, file to store sidedata. Before doing so, we make sidedata reading go through different code as reading data chunk. This will simplify some of the complexity of the next changesets.
The reading is very simple right now and will need some improvement later to
reuse some of the caching strategy we use for the data file.
Differential Revision: https://phab.mercurial-scm.org/D10785
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Thu, 27 May 2021 04:09:30 +0200 |
parents | 9f70512ae2cf |
children | 6000f5b25c9b |
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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 |