Mercurial > hg
view relnotes/5.6 @ 46775:c94fa884240b
rust: Preallocate the returned `Vec` in `utils::files::relativize_path`
Profiling `rhg files > /dev/null` on an old snapshot of mozilla-central
(with `perf` and the Firefox Profiler:
https://github.com/firefox-devtools/profiler/blob/main/docs-user/guide-perf-profiling.md)
showed non-trivial time spend in this function and in `realloc`.
This change makes the wall-clock time for that process on my machine
go from ~190 ms to ~150 ms.
Differential Revision: https://phab.mercurial-scm.org/D10199
author | Simon Sapin <simon.sapin@octobus.net> |
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date | Sat, 13 Mar 2021 08:59:03 +0100 |
parents | 84eb4c833c41 |
children |
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== New Features == * `hg mv -A` can now be used with `--at-rev`. It behaves just like `hg cp -A --at-rev`, i.e. it marks the destination as a copy of the source whether or not the source still exists (but the source must exist in the parent revision). * New revset predicate `diffcontains(pattern)` for filtering revisions in the same way as `hg grep --diff pattern`. * The memory footprint per changeset and per file during pull/unbundle operations has been significantly reduced. == New Experimental Features == == Bug Fixes == == Backwards Compatibility Changes == == Internal API Changes == * `merge.update()` is now private (renamed to `_update()`). Hopefully the higher-level functions available in the same module cover your use cases. * `phases.registernew` now takes a set of revisions instead of a list of nodes. `phases.advanceboundary` takes an optional set of revisions in addition to the list of nodes. The corresponeding members of the `phasecache` class follow this change. * The `addgroup` member of `revlog` classes no longer keeps a list of all found nodes. It now returns True iff a node was found in the group. An optional callback for duplicated nodes can be used by callers to keep track of all nodes themselve. * The `_chaininfocache` of `revlog` classes has been changed from a dict to a LRU cache.