Mercurial > hg
changeset 39155:a43ef77cab1d
revlog: bound number of snapshots in a chain
To limit the number of snapshot chained, we enforce them to be smaller and
smaller. This guarantee the number of snapshot in a chain will be bounded to a
small number.
| author | Paul Morelle <paul.morelle@octobus.net> |
|---|---|
| date | Wed, 07 Mar 2018 12:28:04 +0100 |
| parents | e0da43e2f71f |
| children | b3b4bee161cf |
| files | mercurial/revlog.py |
| diffstat | 1 files changed, 9 insertions(+), 0 deletions(-) [+] |
line wrap: on
line diff
--- a/mercurial/revlog.py Fri Jul 20 14:32:56 2018 +0200 +++ b/mercurial/revlog.py Wed Mar 07 12:28:04 2018 +0100 @@ -2557,6 +2557,15 @@ if self._maxchainlen and self._maxchainlen < deltainfo.chainlen: return False + # bad delta from intermediate snapshot size limit + # + # If an intermediate snapshot size is higher than the limit. The + # limit exist to prevent endless chain of intermediate delta to be + # created. + if (deltainfo.snapshotdepth is not None and + (textlen >> deltainfo.snapshotdepth) < deltainfo.deltalen): + return False + return True def _addrevision(self, node, rawtext, transaction, link, p1, p2, flags,