Mercurial > hg
annotate tests/test-empty-file.t @ 30706:2e4862646f02
repair: speed up stripping of many roots
repair.strip() expects a set of root revisions to strip. It then
builds the full set of descedants by walking the descandants of
each. It is rare that more than a few roots get passed in, but if that
happens, it will wastefully walk the changelog for each root. So let's
just walk it once.
I noticed this because the narrowhg extension was passing not only
roots, but all the commits to strip. When there were tens of thousands
of commits to strip, this resulted in quadratic behavior with that
extension.
author | Martin von Zweigbergk <martinvonz@google.com> |
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date | Wed, 04 Jan 2017 10:07:12 -0800 |
parents | f2719b387380 |
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1 $ hg init a |
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2 $ cd a |
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3 $ touch empty1 |
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4 $ hg add empty1 |
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5 $ hg commit -m 'add empty1' |
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6 |
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7 $ touch empty2 |
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8 $ hg add empty2 |
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9 $ hg commit -m 'add empty2' |
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10 |
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11 $ hg up -C 0 |
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12 0 files updated, 0 files merged, 1 files removed, 0 files unresolved |
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13 $ touch empty3 |
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14 $ hg add empty3 |
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15 $ hg commit -m 'add empty3' |
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16 created new head |
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17 |
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18 $ hg heads |
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19 changeset: 2:a1cb177e0d44 |
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20 tag: tip |
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21 parent: 0:1e1d9c4e5b64 |
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22 user: test |
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23 date: Thu Jan 01 00:00:00 1970 +0000 |
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24 summary: add empty3 |
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25 |
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26 changeset: 1:097d2b0e17f6 |
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27 user: test |
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28 date: Thu Jan 01 00:00:00 1970 +0000 |
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29 summary: add empty2 |
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30 |
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31 |
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32 $ hg merge 1 |
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33 1 files updated, 0 files merged, 0 files removed, 0 files unresolved |
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34 (branch merge, don't forget to commit) |
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35 |
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36 Before changeset 05257fd28591, we didn't notice the |
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37 empty file that came from rev 1: |
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38 |
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39 $ hg status |
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40 M empty2 |
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41 $ hg commit -m merge |
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42 $ hg manifest --debug tip |
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43 b80de5d138758541c5f05265ad144ab9fa86d1db 644 empty1 |
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44 b80de5d138758541c5f05265ad144ab9fa86d1db 644 empty2 |
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45 b80de5d138758541c5f05265ad144ab9fa86d1db 644 empty3 |
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46 |
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47 $ cd .. |