Pierre-Yves David <pierre-yves.david@octobus.net> [Mon, 03 May 2021 22:48:31 +0200] rev 47257
revlog: apply compression mode while reading sidedata
Right now, we only store things as PLAIN, but we are ready for some compression
now. Future changeset will start using some.
Differential Revision: https://phab.mercurial-scm.org/D10654
Pierre-Yves David <pierre-yves.david@octobus.net> [Mon, 03 May 2021 21:34:02 +0200] rev 47256
revlog: introduce a compression mode for sidedata in the revlog index
We will use this for compression for the sidedata payload.
Differential Revision: https://phab.mercurial-scm.org/D10653
Pierre-Yves David <pierre-yves.david@octobus.net> [Mon, 03 May 2021 21:13:24 +0200] rev 47255
revlog: implement a "default compression" mode
The revlog docker is now storing a default compression engine. When a chunk use
that compression, a dedicated mode is used in the revlog entry and we can
directly route it to the right decompressor.
We should probably make PLAIN and DEFAULT mode the only available mode for
revlogv2, but this is something for later.
Differential Revision: https://phab.mercurial-scm.org/D10652
Pierre-Yves David <pierre-yves.david@octobus.net> [Mon, 03 May 2021 21:04:55 +0200] rev 47254
revlog: add a `_get_decompressor` method
This logic is non-trivial and we will need to reuse it.
Differential Revision: https://phab.mercurial-scm.org/D10651
Pierre-Yves David <pierre-yves.david@octobus.net> [Mon, 03 May 2021 19:46:25 +0200] rev 47253
revlog: introduce a plain compression mode
That mode is simple it means the chunk contains uncompressed data and can be
used directly.
Differential Revision: https://phab.mercurial-scm.org/D10650
Pierre-Yves David <pierre-yves.david@octobus.net> [Mon, 03 May 2021 20:22:34 +0200] rev 47252
revlog: use an intermediate variable for `data` in `_chunk`
This will help us to dispatch this to the right decompressor.
Differential Revision: https://phab.mercurial-scm.org/D10649