Mercurial > hg-stable
view hgext/blackbox.py @ 51260:7eea2e4109ae
rust-index: using the `hg::index::Index` in ancestors iterator and lazy set
Since there is no Rust implementation for REVLOGV2/CHANGELOGv2, we declare
them to be incompatible with Rust, hence indexes in these formats will use
the implementations from Python `mercurial.ancestor`. If this is an unacceptable
performance hit for current users of these formats, we can later on add Rust
implementations based on the C index for them or implement these formats for
the Rust indexes.
Among the challenges that we had to meet, we wanted to avoid taking the GIL each
time the inner (vcsgraph) iterator has to call the parents function. This would probably
still be acceptable in terms of performance with `AncestorsIterator`, but not with
`LazyAncestors` nor for the upcoming change in `MissingAncestors`.
Hence we enclose the reference to the index in a `PySharedRef`, leading to more
rigourous checking of mutations, which does pass now that there no logically immutable
methods of `hg::index::Index` that take a mutable reference as input.
author | Georges Racinet <georges.racinet@octobus.net> |
---|---|
date | Fri, 27 Oct 2023 22:11:05 +0200 |
parents | 12c308c55e53 |
children |
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# blackbox.py - log repository events to a file for post-mortem debugging # # Copyright 2010 Nicolas Dumazet # Copyright 2013 Facebook, Inc. # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. """log repository events to a blackbox for debugging Logs event information to .hg/blackbox.log to help debug and diagnose problems. The events that get logged can be configured via the blackbox.track and blackbox.ignore config keys. Examples:: [blackbox] track = * ignore = pythonhook # dirty is *EXPENSIVE* (slow); # each log entry indicates `+` if the repository is dirty, like :hg:`id`. dirty = True # record the source of log messages logsource = True [blackbox] track = command, commandfinish, commandexception, exthook, pythonhook [blackbox] track = incoming [blackbox] # limit the size of a log file maxsize = 1.5 MB # rotate up to N log files when the current one gets too big maxfiles = 3 [blackbox] # Include microseconds in log entries with %f (see Python function # datetime.datetime.strftime) date-format = %Y-%m-%d @ %H:%M:%S.%f """ import re from mercurial.i18n import _ from mercurial.node import hex from mercurial import ( encoding, loggingutil, registrar, ) from mercurial.utils import ( dateutil, procutil, ) # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should # be specifying the version(s) of Mercurial they are tested with, or # leave the attribute unspecified. testedwith = b'ships-with-hg-core' cmdtable = {} command = registrar.command(cmdtable) _lastlogger = loggingutil.proxylogger() class blackboxlogger: def __init__(self, ui, repo): self._repo = repo self._trackedevents = set(ui.configlist(b'blackbox', b'track')) self._ignoredevents = set(ui.configlist(b'blackbox', b'ignore')) self._maxfiles = ui.configint(b'blackbox', b'maxfiles') self._maxsize = ui.configbytes(b'blackbox', b'maxsize') self._inlog = False def tracked(self, event): return ( b'*' in self._trackedevents and event not in self._ignoredevents ) or event in self._trackedevents def log(self, ui, event, msg, opts): # self._log() -> ctx.dirty() may create new subrepo instance, which # ui is derived from baseui. So the recursion guard in ui.log() # doesn't work as it's local to the ui instance. if self._inlog: return self._inlog = True try: self._log(ui, event, msg, opts) finally: self._inlog = False def _log(self, ui, event, msg, opts): default = ui.configdate(b'devel', b'default-date') dateformat = ui.config(b'blackbox', b'date-format') debug_to_stderr = ui.configbool(b'blackbox', b'debug.to-stderr') if dateformat: date = dateutil.datestr(default, dateformat) else: # We want to display milliseconds (more precision seems # unnecessary). Since %.3f is not supported, use %f and truncate # microseconds. date = dateutil.datestr(default, b'%Y-%m-%d %H:%M:%S.%f')[:-3] user = procutil.getuser() pid = b'%d' % procutil.getpid() changed = b'' ctx = self._repo[None] parents = ctx.parents() rev = b'+'.join([hex(p.node()) for p in parents]) if ui.configbool(b'blackbox', b'dirty') and ctx.dirty( missing=True, merge=False, branch=False ): changed = b'+' if ui.configbool(b'blackbox', b'logsource'): src = b' [%s]' % event else: src = b'' try: fmt = b'%s %s @%s%s (%s)%s> %s' args = (date, user, rev, changed, pid, src, msg) with loggingutil.openlogfile( ui, self._repo.vfs, name=b'blackbox.log', maxfiles=self._maxfiles, maxsize=self._maxsize, ) as fp: msg = fmt % args fp.write(msg) if debug_to_stderr: ui.write_err(msg) except (IOError, OSError) as err: # deactivate this to avoid failed logging again self._trackedevents.clear() ui.debug( b'warning: cannot write to blackbox.log: %s\n' % encoding.strtolocal(err.strerror) ) return _lastlogger.logger = self def uipopulate(ui): ui.setlogger(b'blackbox', _lastlogger) def reposetup(ui, repo): # During 'hg pull' a httppeer repo is created to represent the remote repo. # It doesn't have a .hg directory to put a blackbox in, so we don't do # the blackbox setup for it. if not repo.local(): return # Since blackbox.log is stored in the repo directory, the logger should be # instantiated per repository. logger = blackboxlogger(ui, repo) ui.setlogger(b'blackbox', logger) # Set _lastlogger even if ui.log is not called. This gives blackbox a # fallback place to log if _lastlogger.logger is None: _lastlogger.logger = logger repo._wlockfreeprefix.add(b'blackbox.log') @command( b'blackbox', [ (b'l', b'limit', 10, _(b'the number of events to show')), ], _(b'hg blackbox [OPTION]...'), helpcategory=command.CATEGORY_MAINTENANCE, helpbasic=True, ) def blackbox(ui, repo, *revs, **opts): """view the recent repository events""" if not repo.vfs.exists(b'blackbox.log'): return limit = opts.get('limit') assert limit is not None # help pytype fp = repo.vfs(b'blackbox.log', b'r') lines = fp.read().split(b'\n') count = 0 output = [] for line in reversed(lines): if count >= limit: break # count the commands by matching lines like: # 2013/01/23 19:13:36 root> # 2013/01/23 19:13:36 root (1234)> # 2013/01/23 19:13:36 root @0000000000000000000000000000000000000000 (1234)> # 2013-01-23 19:13:36.000 root @0000000000000000000000000000000000000000 (1234)> if re.match( br'^\d{4}[-/]\d{2}[-/]\d{2} \d{2}:\d{2}:\d{2}(.\d*)? .*> .*', line ): count += 1 output.append(line) ui.status(b'\n'.join(reversed(output)))