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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
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# of the GNU General Public License, incorporated herein by reference.
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'''inotify-based status acceleration for Linux systems
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'''
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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 client, errno, os, server, socket
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from weakref import proxy
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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:
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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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cmdutil.service(opts, initfn=service.init, runfn=service.run)
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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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# Set to True if we're the inotify server, so we don't attempt
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# to recurse.
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inotifyserver = False
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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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try:
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if not ignored and not self.inotifyserver:
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result = client.query(ui, repo, files, match, False,
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clean, unknown)
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if result and 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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if result is not None:
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return result
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except (OSError, socket.error), err:
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autostart = ui.configbool('inotify', 'autostart', True)
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if err[0] == errno.ECONNREFUSED:
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ui.warn(_('(found dead inotify server socket; '
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'removing it)\n'))
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os.unlink(repo.join('inotify.sock'))
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if err[0] in (errno.ECONNREFUSED, errno.ENOENT) and autostart:
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ui.debug(_('(starting inotify server)\n'))
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try:
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try:
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server.start(ui, repo)
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except server.AlreadyStartedException, inst:
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# another process may have started its own
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# inotify server while this one was starting.
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ui.debug(str(inst))
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except Exception, inst:
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ui.warn(_('could not start inotify server: '
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'%s\n') % inst)
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else:
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# server is started, send query again
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try:
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return client.query(ui, repo, files, match,
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ignored, clean, unknown)
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except socket.error, err:
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ui.warn(_('could not talk to new inotify '
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'server: %s\n') % err[-1])
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elif err[0] in (errno.ECONNREFUSED, errno.ENOENT):
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# silently ignore normal errors if autostart is False
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ui.debug(_('(inotify server not running)\n'))
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else:
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ui.warn(_('failed to contact inotify server: %s\n')
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% err[-1])
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ui.traceback()
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# replace by old status function
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self.status = super(inotifydirstate, self).status
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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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'^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 [OPT]...')),
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}
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