Mercurial > hg
annotate mercurial/lsprof.py @ 42522:d29db0a0c4eb
update: fix spurious unclean status bug shown by previous commit
The crux of the problem is:
- the dirstate is corrupted (the sizes/dates are assigned to the wrong files)
- because when worker.worker is used with a return value (batchget in
merge.py here), the return value when worker.worker effectively parallelizes
is permuted
- this is because worker.worker's partition of input and combination of output
values are not inverses of one another: it split [1,2,3,4,5,6] into
[[1,3,5],[2,4,6]], but combines that into [1,3,5,2,4,6].
Given that worker.worker doesn't call its function argument on contiguous
chunks on the input arguments, sticking with lists means we'd need to
know the relation between the inputs of worker.worker function argument
(for instance, requiring that every input element is mapped to exactly
one output element). It seems better to instead switch return values to
dicts, which can combined reliably with a straighforward restriction.
Differential Revision: https://phab.mercurial-scm.org/D6581
author | Valentin Gatien-Baron <valentin.gatienbaron@gmail.com> |
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date | Thu, 27 Jun 2019 11:39:35 +0200 |
parents | 56ea22fa55f0 |
children | 2372284d9457 |
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 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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22 |
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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=r"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 = "% 12d %12d %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 if sys.version_info.major >= 3: |
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95 code = code.encode('latin-1') |
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96 return code |
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97 try: |
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98 mname = _fn2mod[code.co_filename] |
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99 except KeyError: |
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100 for k, v in list(sys.modules.iteritems()): |
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101 if v is None: |
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102 continue |
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103 if not isinstance(getattr(v, '__file__', None), str): |
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104 continue |
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105 if v.__file__.startswith(code.co_filename): |
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106 mname = _fn2mod[code.co_filename] = k |
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107 break |
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108 else: |
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109 mname = _fn2mod[code.co_filename] = r'<%s>' % code.co_filename |
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110 |
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111 res = r'%s:%d(%s)' % (mname, code.co_firstlineno, code.co_name) |
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112 |
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113 if sys.version_info.major >= 3: |
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114 res = res.encode('latin-1') |
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115 |
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116 return res |
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117 |
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118 if __name__ == '__main__': |
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119 import os |
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120 sys.argv = sys.argv[1:] |
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121 if not sys.argv: |
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122 print("usage: lsprof.py <script> <arguments...>", file=sys.stderr) |
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123 sys.exit(2) |
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124 sys.path.insert(0, os.path.abspath(os.path.dirname(sys.argv[0]))) |
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125 stats = profile(execfile, sys.argv[0], globals(), locals()) |
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126 stats.sort() |
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127 stats.pprint() |