Mercurial > hg
changeset 47258:c4dbb7636a12
revlog: compress sidedata in `_writeentry`
When appropriate we store the sidedata in a compressed form.
Differential Revision: https://phab.mercurial-scm.org/D10655
| author | Pierre-Yves David <pierre-yves.david@octobus.net> |
|---|---|
| date | Mon, 03 May 2021 23:14:48 +0200 |
| parents | 87d057137f82 |
| children | 07641bafa646 |
| files | mercurial/revlog.py |
| diffstat | 1 files changed, 16 insertions(+), 0 deletions(-) [+] |
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--- a/mercurial/revlog.py Mon May 03 22:48:31 2021 +0200 +++ b/mercurial/revlog.py Mon May 03 23:14:48 2021 +0200 @@ -2537,6 +2537,22 @@ sidedata_compression_mode = COMP_MODE_PLAIN serialized_sidedata = sidedatautil.serialize_sidedata(sidedata) sidedata_offset = offset + deltainfo.deltalen + h, comp_sidedata = self.compress(serialized_sidedata) + if ( + h != b'u' + and comp_sidedata[0:1] != b'\0' + and len(comp_sidedata) < len(serialized_sidedata) + ): + assert not h + if ( + comp_sidedata[0:1] + == self._docket.default_compression_header + ): + sidedata_compression_mode = COMP_MODE_DEFAULT + serialized_sidedata = comp_sidedata + else: + sidedata_compression_mode = COMP_MODE_INLINE + serialized_sidedata = comp_sidedata else: serialized_sidedata = b"" # Don't store the offset if the sidedata is empty, that way