Sat, 28 Oct 2023 22:50:10 +0200 rust-index: using `hg::index::Index` in MissingAncestors
Georges Racinet on incendie.racinet.fr <georges@racinet.fr> [Sat, 28 Oct 2023 22:50:10 +0200] rev 51240
rust-index: using `hg::index::Index` in MissingAncestors With this, the whole `hg-cpython::ancestors` module can now work without the C index.
Fri, 27 Oct 2023 22:11:05 +0200 rust-index: using the `hg::index::Index` in ancestors iterator and lazy set
Georges Racinet <georges.racinet@octobus.net> [Fri, 27 Oct 2023 22:11:05 +0200] rev 51239
rust-index: using the `hg::index::Index` in ancestors iterator and lazy set Since there is no Rust implementation for REVLOGV2/CHANGELOGv2, we declare them to be incompatible with Rust, hence indexes in these formats will use the implementations from Python `mercurial.ancestor`. If this is an unacceptable performance hit for current users of these formats, we can later on add Rust implementations based on the C index for them or implement these formats for the Rust indexes. Among the challenges that we had to meet, we wanted to avoid taking the GIL each time the inner (vcsgraph) iterator has to call the parents function. This would probably still be acceptable in terms of performance with `AncestorsIterator`, but not with `LazyAncestors` nor for the upcoming change in `MissingAncestors`. Hence we enclose the reference to the index in a `PySharedRef`, leading to more rigourous checking of mutations, which does pass now that there no logically immutable methods of `hg::index::Index` that take a mutable reference as input.
Fri, 27 Oct 2023 23:29:29 +0200 revlog: always use a Rust index for REVLOGv1 if rustext is present
Georges Racinet on incendie.racinet.fr <georges@racinet.fr> [Fri, 27 Oct 2023 23:29:29 +0200] rev 51238
revlog: always use a Rust index for REVLOGv1 if rustext is present We are about to change classes such as `rustext.AncestorsIterator` to take a Rust index, hence we cannot have the option not to use the Rust index. Note: this can be refined depending on whether we want to keep this option or not. We will have to make two versions of `AncestorsIterator` and its sibling to support REVLOGV2 and CHANGELOGv2 anyway. Meanwhile, this is the simplest change to make the tests pass.
Sun, 29 Oct 2023 18:35:32 +0100 rust-index: disabling flagprocessor tests
Georges Racinet on incendie.racinet.fr <georges@racinet.fr> [Sun, 29 Oct 2023 18:35:32 +0100] rev 51237
rust-index: disabling flagprocessor tests The list of flags supported by the Rust index is not dynamic, hence flagprocessor has no chance to work.
Tue, 31 Oct 2023 17:58:56 +0100 rust-index: support `unionrepo`'s compressed length hack
Raphaël Gomès <rgomes@octobus.net> [Tue, 31 Oct 2023 17:58:56 +0100] rev 51236
rust-index: support `unionrepo`'s compressed length hack Explanations inline.
Fri, 27 Oct 2023 23:21:50 +0200 rust-index: honour incoming using_general_delta in `deltachain`
Georges Racinet on incendie.racinet.fr <georges@racinet.fr> [Fri, 27 Oct 2023 23:21:50 +0200] rev 51235
rust-index: honour incoming using_general_delta in `deltachain` It looks to be a leftover from some past, but the C index considers only the value passed from Python whereas up to now the Rust index was using the value of its attribute. As a middle ground, we make this argument of `deltachain` optional from the Python side, with the Rust implementation only defaulting to its attribute. This way, we reduce false leads when a difference in results is spotted.
Fri, 27 Oct 2023 21:48:45 +0200 rust-index: use interior mutability in head revs and caches
Georges Racinet on incendie.racinet.fr <georges@racinet.fr> [Fri, 27 Oct 2023 21:48:45 +0200] rev 51234
rust-index: use interior mutability in head revs and caches For upcoming changes in `hg-cpython` switching to the `hg-core` index in ancestors iterators, we will need to avoid excessive mutability, restricting the use of mutable references on `hg::index::Index` to methods that actually logically mutate it, whereas the maintenance of caches such as `head_revs` clearly does not. We illustrate that immediately by switching to immutable borrows in the corresponding methods of `hg-cpython::MixedIndex`
Thu, 26 Oct 2023 15:26:19 +0200 rust-index: add Sync bound to all relevant mmap-derived values
Raphaël Gomès <rgomes@octobus.net> [Thu, 26 Oct 2023 15:26:19 +0200] rev 51233
rust-index: add Sync bound to all relevant mmap-derived values All readonly mmaps are Sync as far as Rust is concerned. Integrity of the mmap'ed file is a concern separate to Rust's memory model, since it requires out-of-program handling via locks, etc. This will help when we start sharing the Rust Index with Python.
Tue, 31 Oct 2023 18:09:43 +0100 debugindexstats: handle the lack of Rust support better
Raphaël Gomès <rgomes@octobus.net> [Tue, 31 Oct 2023 18:09:43 +0100] rev 51232
debugindexstats: handle the lack of Rust support better We don't have any stats in the Rust index. Currently it is not known which stats would be interesting to get, so if they end up being important, we can add them later.
Tue, 31 Oct 2023 17:36:59 +0100 rust-python-index: don't panic on a corrupted index when calling from Python
Raphaël Gomès <rgomes@octobus.net> [Tue, 31 Oct 2023 17:36:59 +0100] rev 51231
rust-python-index: don't panic on a corrupted index when calling from Python This makes `test-verify.t` pass again. In an ideal world, we would find the exact commit where this test breaks and amend part of this change there, but this is a long enough series.
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