172             revlog._nodemap_file = get_nodemap_file(revlog)

   172             revlog._nodemap_file = get_nodemap_file(revlog)

   173         else:

   173         else:

   174             msg = "calling persist nodemap on a revlog without the feature enabled"

   174             msg = "calling persist nodemap on a revlog without the feature enabled"

   175             raise error.ProgrammingError(msg)

   175             raise error.ProgrammingError(msg)

   176 

   176 

   178     ondisk_docket = revlog._nodemap_docket

   178     ondisk_docket = revlog._nodemap_docket

   180     use_mmap = revlog.opener.options.get(b"persistent-nodemap.mmap")

   180     use_mmap = revlog.opener.options.get(b"persistent-nodemap.mmap")

   181 

   181 

   182     data = None

   182     data = None

   183     # first attemp an incremental update of the data

   183     # first attemp an incremental update of the data

   184     if can_incremental and ondisk_docket is not None:

   184     if can_incremental and ondisk_docket is not None:

   214 

   214 

   215     if data is None:

   215     if data is None:

   216         # otherwise fallback to a full new export

   216         # otherwise fallback to a full new export

   217         target_docket = NodeMapDocket()

   217         target_docket = NodeMapDocket()

   218         datafile = _rawdata_filepath(revlog, target_docket)

   218         datafile = _rawdata_filepath(revlog, target_docket)

   220             data = revlog.index.nodemap_data_all()

   220             data = revlog.index.nodemap_data_all()

   221         else:

   221         else:

   222             data = persistent_data(revlog.index)

   222             data = persistent_data(revlog.index)

   223         # EXP-TODO: if this is a cache, this should use a cache vfs, not a

   223         # EXP-TODO: if this is a cache, this should use a cache vfs, not a

   224         # store vfs

   224         # store vfs