Mercurial > hg
annotate tests/test-dirstate-race2.t @ 47072:4c041c71ec01
revlog: introduce an explicit tracking of what the revlog is about
Since the dawn of time, people have been forced to rely to lossy introspection
of the index filename to determine what the purpose and role of the revlog they
encounter is. This is hacky, error prone, inflexible, abstraction-leaky,
<insert-your-own-complaints-here>.
In f63299ee7e4d Raphaël introduced a new attribute to track this information:
`revlog_kind`. However it is initialized in an odd place and various instances
end up not having it set. In addition is only tracking some of the information
we end up having to introspect in various pieces of code.
So we add a new attribute that holds more data and is more strictly enforced.
This work is done in collaboration with Raphaël.
The `revlog_kind` one will be removed/adapted in the next changeset. We expect
to be able to clean up various existing piece of code and to simplify coming
work around the newer revlog format.
Differential Revision: https://phab.mercurial-scm.org/D10352
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Tue, 06 Apr 2021 05:20:24 +0200 |
parents | 87a34c767384 |
children | 93eb6c8035a9 |
rev | line source |
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tests: show how the dirstate can end up containing wrong information
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
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1 Checking the size/permissions/file-type of files stored in the |
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2 dirstate after an update where the files are changed concurrently |
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3 outside of hg's control. |
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4 |
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5 $ hg init repo |
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6 $ cd repo |
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7 $ echo a > a |
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8 $ hg commit -qAm _ |
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9 $ echo aa > a |
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10 $ hg commit -m _ |
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11 |
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12 $ hg debugdirstate --no-dates |
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13 n 644 3 (set |unset) a (re) |
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14 |
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15 $ cat >> $TESTTMP/dirstaterace.py << EOF |
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16 > from mercurial import ( |
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17 > extensions, |
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18 > merge, |
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19 > ) |
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20 > def extsetup(ui): |
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21 > extensions.wrapfunction(merge, 'applyupdates', wrap) |
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22 > def wrap(orig, *args, **kwargs): |
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23 > res = orig(*args, **kwargs) |
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24 > with open("a", "w"): |
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25 > pass # just truncate the file |
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26 > return res |
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27 > EOF |
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28 |
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29 Do an update where file 'a' is changed between hg writing it to disk |
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Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
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30 and hg writing the dirstate. The dirstate is correct nonetheless, and |
87a34c767384
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Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents:
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31 so hg status correctly shows a as clean. |
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32 |
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33 $ hg up -r 0 --config extensions.race=$TESTTMP/dirstaterace.py |
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Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents:
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34 1 files updated, 0 files merged, 0 files removed, 0 files unresolved |
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Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents:
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35 $ hg debugdirstate --no-dates |
42456
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merge: fix race that could cause wrong size in dirstate
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents:
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36 n 644 2 (set |unset) a (re) |
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parents:
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37 $ echo a > a; hg status; hg diff |