222         """filtered version of revlog.flags"""

   222         """filtered version of revlog.flags"""

   223         if rev in self.filteredrevs:

   223         if rev in self.filteredrevs:

   224             raise error.FilteredIndexError(rev)

   224             raise error.FilteredIndexError(rev)

   225         return super(changelog, self).flags(rev)

   225         return super(changelog, self).flags(rev)

   226 

   226 

   228         "delay visibility of index updates to other readers"

   228         "delay visibility of index updates to other readers"

   229 

   229 

   230         if not self._delayed:

   230         if not self._delayed:

   231             if len(self) == 0:

   231             if len(self) == 0:

   232                 self._divert = True

   232                 self._divert = True

   236             else:

   236             else:

   237                 self._delaybuf = []

   237                 self._delaybuf = []

   238                 self.opener = _delayopener(self._realopener, self.indexfile,

   238                 self.opener = _delayopener(self._realopener, self.indexfile,

   239                                            self._delaybuf)

   239                                            self._delaybuf)

   240         self._delayed = True

   240         self._delayed = True

   241 

   242 

   242     def finalize(self, tr):

   243     def finalize(self, tr):

   243         "finalize index updates"

   244         "finalize index updates"

   244         self._delayed = False

   245         self._delayed = False

   245         self.opener = self._realopener

   246         self.opener = self._realopener

   264         self.index = r.index

   265         self.index = r.index

   265         self.nodemap = r.nodemap

   266         self.nodemap = r.nodemap

   266         self._nodecache = r._nodecache

   267         self._nodecache = r._nodecache

   267         self._chunkcache = r._chunkcache

   268         self._chunkcache = r._chunkcache

   268 

   269 

   270         "create a file containing the unfinalized state for pretxnchangegroup"

   271         "create a file containing the unfinalized state for pretxnchangegroup"

   271         if self._delaybuf:

   272         if self._delaybuf:

   272             # make a temporary copy of the index

   273             # make a temporary copy of the index

   273             fp1 = self._realopener(self.indexfile)

   274             fp1 = self._realopener(self.indexfile)

   274             fp2 = self._realopener(self.indexfile + ".a", "w")

   275             fp2 = self._realopener(self.indexfile + ".a", "w")