Mercurial > hg
annotate hgdemandimport/tracing.py @ 47696:ff481c238496
dirstate: properly update `_lastnormaltime` in `update_file_p1`
This was previously overlooked.
Differential Revision: https://phab.mercurial-scm.org/D11138
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Mon, 19 Jul 2021 04:43:28 +0200 |
parents | 2372284d9457 |
children | 6000f5b25c9b |
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1 # Support code for event tracing in Mercurial. Lives in demandimport |
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2 # so it can also be used in demandimport. |
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3 # |
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4 # Copyright 2018 Google LLC. |
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5 # |
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6 # This software may be used and distributed according to the terms of the |
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7 # GNU General Public License version 2 or any later version. |
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8 from __future__ import absolute_import |
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9 |
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10 import contextlib |
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11 import os |
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12 |
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13 _pipe = None |
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14 _checked = False |
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15 _session = 'none' |
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16 |
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17 |
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18 def _isactive(): |
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19 global _pipe, _session, _checked |
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20 if _pipe is None: |
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21 if _checked: |
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22 return False |
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23 _checked = True |
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24 if 'HGCATAPULTSERVERPIPE' not in os.environ: |
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25 return False |
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26 _pipe = open(os.environ['HGCATAPULTSERVERPIPE'], 'w', 1) |
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27 _session = os.environ.get('HGCATAPULTSESSION', 'none') |
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28 return True |
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29 |
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30 |
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31 @contextlib.contextmanager |
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32 def log(whencefmt, *whenceargs): |
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33 if not _isactive(): |
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34 yield |
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35 return |
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36 whence = whencefmt % whenceargs |
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37 try: |
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38 # Both writes to the pipe are wrapped in try/except to ignore |
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39 # errors, as we can see mysterious errors in here if the pager |
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40 # is active. Presumably other conditions could trigger |
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41 # problems too. |
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42 try: |
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43 _pipe.write('START %s %s\n' % (_session, whence)) |
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44 except IOError: |
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45 pass |
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46 yield |
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47 finally: |
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48 try: |
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49 _pipe.write('END %s %s\n' % (_session, whence)) |
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50 except IOError: |
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51 pass |
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52 |
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53 |
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54 def counter(label, amount, *labelargs): |
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55 if not _isactive(): |
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56 return |
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57 l = label % labelargs |
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58 # See above in log() for why this is in a try/except. |
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59 try: |
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60 _pipe.write('COUNTER %s %d %s\n' % (_session, amount, l)) |
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61 except IOError: |
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62 pass |