comparison mercurial/revlog.py @ 40055:0a4625ffd6c0

revlog: move loading of index data into own method

This will allow us to "reload" a revlog instance from a rewritten
index file, which will be used in a subsequent commit.

Differential Revision: https://phab.mercurial-scm.org/D4868

40054:801ccd8e67c0

                                      'greater than 0') % self._chunkcachesize)
        elif self._chunkcachesize & (self._chunkcachesize - 1):
            raise error.RevlogError(_('revlog chunk cache size %r is not a '
                                      'power of 2') % self._chunkcachesize)

        indexdata = ''
        self._initempty = True
        try:
            with self._indexfp() as f:
                if (mmapindexthreshold is not None and
                        self.opener.fstat(f).st_size >= mmapindexthreshold):
                    indexdata = util.buffer(util.mmapread(f))
                else:
                    indexdata = f.read()
            if len(indexdata) > 0:
                v = versionformat_unpack(indexdata[:4])[0]

40055:0a4625ffd6c0

                                      'greater than 0') % self._chunkcachesize)
        elif self._chunkcachesize & (self._chunkcachesize - 1):
            raise error.RevlogError(_('revlog chunk cache size %r is not a '
                                      'power of 2') % self._chunkcachesize)

        self._loadindex(v, mmapindexthreshold)

    def _loadindex(self, v, mmapindexthreshold):
        indexdata = ''
        self._initempty = True
        try:
            with self._indexfp() as f:
                if (mmapindexthreshold is not None and
                    self.opener.fstat(f).st_size >= mmapindexthreshold):
                    indexdata = util.buffer(util.mmapread(f))
                else:
                    indexdata = f.read()
            if len(indexdata) > 0:
                v = versionformat_unpack(indexdata[:4])[0]