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annotate mercurial/lsprofcalltree.py @ 47682:78f7f0d490ee

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dirstate-v2: Move fixed-size tree metadata into the docket file Before this changeset, the dirstate-v2 data file contained not only nodes and paths that may be reused when appending to an existing file, but also some fixed-size metadata that applies to the entire tree and was added at the end of the data file for every append. This moves that metadata into the docket file, so that repeated "append" operations without meaningful changes don?t actually need to grow any file. Differential Revision: https://phab.mercurial-scm.org/D11098
author Simon Sapin <simon.sapin@octobus.net>
date Thu, 15 Jul 2021 23:02:17 +0200
parents 687b865b95ad
children 6000f5b25c9b
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1 """
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2 lsprofcalltree.py - lsprof output which is readable by kcachegrind
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3
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4 Authors:
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5 * David Allouche <david <at> allouche.net>
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6 * Jp Calderone & Itamar Shtull-Trauring
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7 * Johan Dahlin
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8
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9 This software may be used and distributed according to the terms
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10 of the GNU General Public License, incorporated herein by reference.
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11 """
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12
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13 from __future__ import absolute_import
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14
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15 from . import pycompat
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18 def label(code):
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19 if isinstance(code, str):
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20 # built-in functions ('~' sorts at the end)
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21 return b'~' + pycompat.sysbytes(code)
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22 else:
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23 return b'%s %s:%d' % (
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24 pycompat.sysbytes(code.co_name),
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25 pycompat.sysbytes(code.co_filename),
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26 code.co_firstlineno,
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27 )
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29
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30 class KCacheGrind(object):
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31 def __init__(self, profiler):
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32 self.data = profiler.getstats()
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33 self.out_file = None
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34
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35 def output(self, out_file):
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36 self.out_file = out_file
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37 out_file.write(b'events: Ticks\n')
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38 self._print_summary()
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39 for entry in self.data:
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40 self._entry(entry)
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42 def _print_summary(self):
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43 max_cost = 0
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44 for entry in self.data:
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45 totaltime = int(entry.totaltime * 1000)
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46 max_cost = max(max_cost, totaltime)
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47 self.out_file.write(b'summary: %d\n' % max_cost)
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49 def _entry(self, entry):
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50 out_file = self.out_file
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51
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52 code = entry.code
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53 if isinstance(code, str):
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54 out_file.write(b'fi=~\n')
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55 else:
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56 out_file.write(b'fi=%s\n' % pycompat.sysbytes(code.co_filename))
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58 out_file.write(b'fn=%s\n' % label(code))
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60 inlinetime = int(entry.inlinetime * 1000)
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61 if isinstance(code, str):
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62 out_file.write(b'0 %d\n' % inlinetime)
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63 else:
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64 out_file.write(b'%d %d\n' % (code.co_firstlineno, inlinetime))
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66 # recursive calls are counted in entry.calls
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67 if entry.calls:
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68 calls = entry.calls
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69 else:
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70 calls = []
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71
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72 if isinstance(code, str):
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73 lineno = 0
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74 else:
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75 lineno = code.co_firstlineno
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76
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77 for subentry in calls:
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78 self._subentry(lineno, subentry)
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80 out_file.write(b'\n')
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81
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82 def _subentry(self, lineno, subentry):
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83 out_file = self.out_file
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84 code = subentry.code
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85 out_file.write(b'cfn=%s\n' % label(code))
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86 if isinstance(code, str):
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87 out_file.write(b'cfi=~\n')
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88 out_file.write(b'calls=%d 0\n' % subentry.callcount)
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89 else:
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90 out_file.write(b'cfi=%s\n' % pycompat.sysbytes(code.co_filename))
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91 out_file.write(
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92 b'calls=%d %d\n' % (subentry.callcount, code.co_firstlineno)
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93 )
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95 totaltime = int(subentry.totaltime * 1000)
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96 out_file.write(b'%d %d\n' % (lineno, totaltime))