comparison mercurial/changelog.py @ 47150:8d3c2f9d4af7

revlog: use a "radix" to address revlog

Instead of pointing to the index directly and to derive the other file from
that, we directly provide the radix and let the revlog determine the associated
file path internally. This is more robust and will give us more flexibility for
picking this file name in the future.

Differential Revision: https://phab.mercurial-scm.org/D10576

47149:396442cd7e6a

        ``concurrencychecker`` will be passed to the revlog init function, see
        the documentation there.
        """

        indexfile = b'00changelog.i'
        if trypending and opener.exists(b'00changelog.i.a'):
            postfix = b'a'
        else:
            postfix = None

        datafile = b'00changelog.d'
        revlog.revlog.__init__(
            self,
            opener,
            target=(revlog_constants.KIND_CHANGELOG, None),
            postfix=postfix,
            indexfile=indexfile,
            datafile=datafile,
            checkambig=True,
            mmaplargeindex=True,
            persistentnodemap=opener.options.get(b'persistent-nodemap', False),
            concurrencychecker=concurrencychecker,
        )

47150:8d3c2f9d4af7

        ``concurrencychecker`` will be passed to the revlog init function, see
        the documentation there.
        """

        if trypending and opener.exists(b'00changelog.i.a'):
            postfix = b'a'
        else:
            postfix = None

        revlog.revlog.__init__(
            self,
            opener,
            target=(revlog_constants.KIND_CHANGELOG, None),
            radix=b'00changelog',
            postfix=postfix,
            checkambig=True,
            mmaplargeindex=True,
            persistentnodemap=opener.options.get(b'persistent-nodemap', False),
            concurrencychecker=concurrencychecker,
        )