Mercurial > hg
view tests/test-rebase-transaction.t @ 41247:a89b20a49c13
rust-cpython: using MissingAncestors from Python code
As precedently done with LazyAncestors on cpython.rs, we test for the
presence of the 'rustext' module.
incrementalmissingrevs() has two callers within the Mercurial core:
`setdiscovery.partialdiscovery` and the `only()` revset.
This move shows a significant discovery performance improvement
in cases where the baseline is slow: using perfdiscovery on the PyPy
repos, prepared with `contrib/discovery-helper <repo> 50 100`, we
get averaged medians of 403ms with the Rust version vs 742ms without
(about 45% better).
But there are still indications that performance can be worse in cases
the baseline is fast, possibly due to the conversion from Python to
Rust and back becoming the bottleneck. We could measure this on
mozilla-central in cases were the delta is just a few changesets.
This requires confirmation, but if that's the reason, then an
upcoming `partialdiscovery` fully in Rust should solve the problem.
Differential Revision: https://phab.mercurial-scm.org/D5551
author | Georges Racinet <georges.racinet@octobus.net> |
---|---|
date | Fri, 30 Nov 2018 14:35:57 +0100 |
parents | 17a744c5e270 |
children | 35ebdbb38efb |
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Rebasing using a single transaction $ cat >> $HGRCPATH <<EOF > [extensions] > rebase= > drawdag=$TESTDIR/drawdag.py > > [rebase] > singletransaction=True > > [phases] > publish=False > > [alias] > tglog = log -G --template "{rev}: {desc}" > EOF Check that a simple rebase works $ hg init simple && cd simple $ hg debugdrawdag <<'EOF' > Z > | > | D > | | > | C > | | > Y B > |/ > A > EOF - We should only see one status stored message. It comes from the start. $ hg rebase --debug -b D -d Z | grep 'status stored' rebase status stored $ hg tglog o 5: D | o 4: C | o 3: B | o 2: Z | o 1: Y | o 0: A $ cd .. Check that --collapse works $ hg init collapse && cd collapse $ hg debugdrawdag <<'EOF' > Z > | > | D > | | > | C > | | > Y B > |/ > A > EOF - We should only see two status stored messages. One from the start, one from - cmdutil.commitforceeditor() which forces tr.writepending() $ hg rebase --collapse --debug -b D -d Z | grep 'status stored' rebase status stored rebase status stored $ hg tglog o 3: Collapsed revision | * B | * C | * D o 2: Z | o 1: Y | o 0: A $ cd .. With --collapse, check that conflicts can be resolved and rebase can then be continued $ hg init collapse-conflict && cd collapse-conflict $ hg debugdrawdag <<'EOF' > Z # Z/conflict=Z > | > | D > | | > | C # C/conflict=C > | | > Y B > |/ > A > EOF $ hg rebase --collapse -b D -d Z rebasing 1:112478962961 "B" (B) rebasing 3:c26739dbe603 "C" (C) merging conflict warning: conflicts while merging conflict! (edit, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue) [1] $ hg tglog o 5: D | | @ 4: Z | | @ | 3: C | | | o 2: Y | | o | 1: B |/ o 0: A $ hg st M C M conflict A B ? conflict.orig $ echo resolved > conflict $ hg resolve -m (no more unresolved files) continue: hg rebase --continue $ hg rebase --continue already rebased 1:112478962961 "B" (B) as 79bc8f4973ce rebasing 3:c26739dbe603 "C" (C) rebasing 5:d24bb333861c "D" (D tip) saved backup bundle to $TESTTMP/collapse-conflict/.hg/strip-backup/112478962961-b5b34645-rebase.hg $ hg tglog o 3: Collapsed revision | * B | * C | * D o 2: Z | o 1: Y | o 0: A $ cd .. With --collapse, check that the commit message editing can be canceled and rebase can then be continued $ hg init collapse-cancel-editor && cd collapse-cancel-editor $ hg debugdrawdag <<'EOF' > Z > | > | D > | | > | C > | | > Y B > |/ > A > EOF $ HGEDITOR=false hg --config ui.interactive=1 rebase --collapse -b D -d Z rebasing 1:112478962961 "B" (B) rebasing 3:26805aba1e60 "C" (C) rebasing 5:f585351a92f8 "D" (D tip) transaction abort! rollback completed abort: edit failed: false exited with status 1 [255] $ hg tglog o 5: D | | o 4: Z | | o | 3: C | | | o 2: Y | | o | 1: B |/ o 0: A $ hg rebase --continue rebasing 1:112478962961 "B" (B) rebasing 3:26805aba1e60 "C" (C) rebasing 5:f585351a92f8 "D" (D tip) saved backup bundle to $TESTTMP/collapse-cancel-editor/.hg/strip-backup/112478962961-cb2a9b47-rebase.hg $ hg tglog o 3: Collapsed revision | * B | * C | * D o 2: Z | o 1: Y | o 0: A $ cd ..