comparison mercurial/pure/parsers.py @ 44336:8374b69aef75

nodemap: track the total and unused amount of data in the rawdata file

We need to keep that information around:

* total data will allow transaction to start appending new information without
  confusing other reader.

* unused data will allow to detect when we should regenerate new rawdata file.

Differential Revision: https://phab.mercurial-scm.org/D7889

44335:e41a164db7a9

        This containst the data for an append-only update of the data provided
        in the last call to `update_nodemap_data`.
        """
        if self._nm_root is None:
            return None
        data = nodemaputil.update_persistent_data(
            self, self._nm_root, self._nm_max_idx, self._nm_rev
        )
        self._nm_root = self._nm_max_idx = self._nm_rev = None
        return data

    def update_nodemap_data(self, docket, nm_data):
        """provide full block of persisted binary data for a nodemap

        The data are expected to come from disk. See `nodemap_data_all` for a

44336:8374b69aef75

        This containst the data for an append-only update of the data provided
        in the last call to `update_nodemap_data`.
        """
        if self._nm_root is None:
            return None
        changed, data = nodemaputil.update_persistent_data(
            self, self._nm_root, self._nm_max_idx, self._nm_rev
        )
        self._nm_root = self._nm_max_idx = self._nm_rev = None
        return changed, data

    def update_nodemap_data(self, docket, nm_data):
        """provide full block of persisted binary data for a nodemap

        The data are expected to come from disk. See `nodemap_data_all` for a