mercurial/dirstate.py

48069:f27a83399abb

            # changes out, but also for dropping ambiguous timestamp.
            # delayed writing re-raise "ambiguous timestamp issue".
            # See also the wiki page below for detail:
            # https://www.mercurial-scm.org/wiki/DirstateTransactionPlan

            # emulate dropping timestamp in 'parsers.pack_dirstate'
            now = _getfsnow(self._opener)
            self._map.clearambiguoustimes(self._updatedfiles, now)

            # emulate that all 'dirstate.normal' results are written out
            self._lastnormaltime = 0
            self._updatedfiles.clear()

            # delay writing in-memory changes out
            tr.addfilegenerator(
                b'dirstate',
                (self._filename,),
                lambda f: self._writedirstate(tr, f),
                location=b'plain',
            )
            return

        st = self._opener(filename, b"w", atomictemp=True, checkambig=True)

        Category is a unique identifier to allow overwriting an old callback
        with a newer callback.
        """
        self._plchangecallbacks[category] = callback

    def _writedirstate(self, tr, st):
        # notify callbacks about parents change
        if self._origpl is not None and self._origpl != self._pl:
            for c, callback in sorted(
                pycompat.iteritems(self._plchangecallbacks)
            ):
                callback(self, self._origpl, self._pl)
            self._origpl = None
        # use the modification time of the newly created temporary file as the
        # filesystem's notion of 'now'
        now = util.fstat(st)[stat.ST_MTIME] & _rangemask

        # enough 'delaywrite' prevents 'pack_dirstate' from dropping
        # timestamp of each entries in dirstate, because of 'now > mtime'
        delaywrite = self._ui.configint(b'debug', b'dirstate.delaywrite')
        if delaywrite > 0:

48070:84e7a86e3a63

            # changes out, but also for dropping ambiguous timestamp.
            # delayed writing re-raise "ambiguous timestamp issue".
            # See also the wiki page below for detail:
            # https://www.mercurial-scm.org/wiki/DirstateTransactionPlan

            # record when mtime start to be ambiguous
            now = _getfsnow(self._opener)

            # emulate that all 'dirstate.normal' results are written out
            self._updatedfiles.clear()

            # delay writing in-memory changes out
            tr.addfilegenerator(
                b'dirstate',
                (self._filename,),
                lambda f: self._writedirstate(tr, f, now=now),
                location=b'plain',
            )
            return

        st = self._opener(filename, b"w", atomictemp=True, checkambig=True)

        Category is a unique identifier to allow overwriting an old callback
        with a newer callback.
        """
        self._plchangecallbacks[category] = callback

    def _writedirstate(self, tr, st, now=None):
        # notify callbacks about parents change
        if self._origpl is not None and self._origpl != self._pl:
            for c, callback in sorted(
                pycompat.iteritems(self._plchangecallbacks)
            ):
                callback(self, self._origpl, self._pl)
            self._origpl = None

        if now is None:
            # use the modification time of the newly created temporary file as the
            # filesystem's notion of 'now'
            now = util.fstat(st)[stat.ST_MTIME] & _rangemask

        # enough 'delaywrite' prevents 'pack_dirstate' from dropping
        # timestamp of each entries in dirstate, because of 'now > mtime'
        delaywrite = self._ui.configint(b'debug', b'dirstate.delaywrite')
        if delaywrite > 0: