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# __init__.py - inotify-based status acceleration for Linux
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#
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# Copyright 2006, 2007, 2008 Bryan O'Sullivan <bos@serpentine.com>
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# Copyright 2007, 2008 Brendan Cully <brendan@kublai.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2, incorporated herein by reference.
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'''accelerate status report using Linux's inotify service'''
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# todo: socket permissions
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from mercurial.i18n import _
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from mercurial import cmdutil, util
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import server
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from weakref import proxy
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from client import client, QueryFailed
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def serve(ui, repo, **opts):
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'''start an inotify server for this repository'''
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timeout = opts.get('timeout')
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if timeout:
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timeout = float(timeout) * 1e3
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class service(object):
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def init(self):
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try:
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self.master = server.master(ui, repo, timeout)
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except server.AlreadyStartedException, inst:
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raise util.Abort(str(inst))
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def run(self):
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try:
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self.master.run()
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finally:
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self.master.shutdown()
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service = service()
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logfile = ui.config('inotify', 'log')
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cmdutil.service(opts, initfn=service.init, runfn=service.run,
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logfile=logfile)
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def debuginotify(ui, repo, **opts):
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'''debugging information for inotify extension
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Prints the list of directories being watched by the inotify server.
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'''
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cli = client(ui, repo)
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response = cli.debugquery()
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ui.write(_('directories being watched:\n'))
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for path in response:
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ui.write((' %s/\n') % path)
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def reposetup(ui, repo):
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if not hasattr(repo, 'dirstate'):
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return
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# XXX: weakref until hg stops relying on __del__
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repo = proxy(repo)
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class inotifydirstate(repo.dirstate.__class__):
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# We'll set this to false after an unsuccessful attempt so that
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# next calls of status() within the same instance don't try again
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# to start an inotify server if it won't start.
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_inotifyon = True
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def status(self, match, ignored, clean, unknown=True):
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files = match.files()
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if '.' in files:
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files = []
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if self._inotifyon and not ignored:
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cli = client(ui, repo)
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try:
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result = cli.statusquery(files, match, False,
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clean, unknown)
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except QueryFailed, instr:
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ui.debug(str(instr))
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# don't retry within the same hg instance
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inotifydirstate._inotifyon = False
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pass
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else:
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if ui.config('inotify', 'debug'):
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r2 = super(inotifydirstate, self).status(
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match, False, clean, unknown)
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for c,a,b in zip('LMARDUIC', result, r2):
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for f in a:
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if f not in b:
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ui.warn('*** inotify: %s +%s\n' % (c, f))
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for f in b:
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if f not in a:
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ui.warn('*** inotify: %s -%s\n' % (c, f))
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result = r2
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return result
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return super(inotifydirstate, self).status(
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match, ignored, clean, unknown)
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repo.dirstate.__class__ = inotifydirstate
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cmdtable = {
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'debuginotify':
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(debuginotify, [], ('hg debuginotify')),
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'^inserve':
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(serve,
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[('d', 'daemon', None, _('run server in background')),
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('', 'daemon-pipefds', '', _('used internally by daemon mode')),
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('t', 'idle-timeout', '', _('minutes to sit idle before exiting')),
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('', 'pid-file', '', _('name of file to write process ID to'))],
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_('hg inserve [OPTION]...')),
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}
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