Mercurial > hg
view hgdemandimport/tracing.py @ 45954:a120d1c9c704
dispatch: print the version of each extension in the bug report, if available
Sometimes the wrong extensions is blamed, so we might as well print the version
info for all of them. Additionally, since the internal extensions are never
blamed, this is a good way to make the pygit2 version available in a bug report.
Differential Revision: https://phab.mercurial-scm.org/D9440
author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Fri, 27 Nov 2020 15:54:46 -0500 |
parents | 2372284d9457 |
children | 6000f5b25c9b |
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# Support code for event tracing in Mercurial. Lives in demandimport # so it can also be used in demandimport. # # Copyright 2018 Google LLC. # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import import contextlib import os _pipe = None _checked = False _session = 'none' def _isactive(): global _pipe, _session, _checked if _pipe is None: if _checked: return False _checked = True if 'HGCATAPULTSERVERPIPE' not in os.environ: return False _pipe = open(os.environ['HGCATAPULTSERVERPIPE'], 'w', 1) _session = os.environ.get('HGCATAPULTSESSION', 'none') return True @contextlib.contextmanager def log(whencefmt, *whenceargs): if not _isactive(): yield return whence = whencefmt % whenceargs try: # Both writes to the pipe are wrapped in try/except to ignore # errors, as we can see mysterious errors in here if the pager # is active. Presumably other conditions could trigger # problems too. try: _pipe.write('START %s %s\n' % (_session, whence)) except IOError: pass yield finally: try: _pipe.write('END %s %s\n' % (_session, whence)) except IOError: pass def counter(label, amount, *labelargs): if not _isactive(): return l = label % labelargs # See above in log() for why this is in a try/except. try: _pipe.write('COUNTER %s %d %s\n' % (_session, amount, l)) except IOError: pass