mercurial/revlog.py

32157:e9d325cfe071

        self._pcache = {}
        # Mapping of revision integer to full node.
        self._nodecache = {nullid: nullrev}
        self._nodepos = None
        self._compengine = 'zlib'
        self._maxdeltachainspan = -1

        v = REVLOG_DEFAULT_VERSION
        opts = getattr(opener, 'options', None)
        if opts is not None:
            if 'revlogv1' in opts:

            if 'aggressivemergedeltas' in opts:
                self._aggressivemergedeltas = opts['aggressivemergedeltas']
            self._lazydeltabase = bool(opts.get('lazydeltabase', False))
            if 'compengine' in opts:
                self._compengine = opts['compengine']
            if 'maxdeltachainspan' in opts:
                self._maxdeltachainspan = opts['maxdeltachainspan']

        if self._chunkcachesize <= 0:
            raise RevlogError(_('revlog chunk cache size %r is not greater '
                                'than 0') % self._chunkcachesize)
        elif self._chunkcachesize & (self._chunkcachesize - 1):

        # - 'dist' is the distance from the base revision -- bounding it limits
        #   the amount of I/O we need to do.
        # - 'compresseddeltalen' is the sum of the total size of deltas we need
        #   to apply -- bounding it limits the amount of CPU we consume.
        dist, l, data, base, chainbase, chainlen, compresseddeltalen = d

        defaultmax = textlen * 4
        maxdist = self._maxdeltachainspan
        if not maxdist:
            maxdist = dist # ensure the conditional pass
        maxdist = max(maxdist, defaultmax)
        if (dist > maxdist or l > textlen or
            compresseddeltalen > textlen * 2 or
            (self._maxchainlen and chainlen > self._maxchainlen)):
            return False

        return True

32159:664d6f6c2a48

        self._pcache = {}
        # Mapping of revision integer to full node.
        self._nodecache = {nullid: nullrev}
        self._nodepos = None
        self._compengine = 'zlib'

        v = REVLOG_DEFAULT_VERSION
        opts = getattr(opener, 'options', None)
        if opts is not None:
            if 'revlogv1' in opts:

            if 'aggressivemergedeltas' in opts:
                self._aggressivemergedeltas = opts['aggressivemergedeltas']
            self._lazydeltabase = bool(opts.get('lazydeltabase', False))
            if 'compengine' in opts:
                self._compengine = opts['compengine']

        if self._chunkcachesize <= 0:
            raise RevlogError(_('revlog chunk cache size %r is not greater '
                                'than 0') % self._chunkcachesize)
        elif self._chunkcachesize & (self._chunkcachesize - 1):

        # - 'dist' is the distance from the base revision -- bounding it limits
        #   the amount of I/O we need to do.
        # - 'compresseddeltalen' is the sum of the total size of deltas we need
        #   to apply -- bounding it limits the amount of CPU we consume.
        dist, l, data, base, chainbase, chainlen, compresseddeltalen = d
        if (dist > textlen * 4 or l > textlen or
            compresseddeltalen > textlen * 2 or
            (self._maxchainlen and chainlen > self._maxchainlen)):
            return False

        return True