Mercurial > hg
annotate tests/test-revlog-mmapindex.t @ 40417:49c7b701fdc2 stable
phase: add an archived phase
This phase allows for hidden changesets in the "user space". It differs from
the "internal" phase which is intended for internal by-product only. There
have been discussions at the 4.8 sprint to use such phase to speedup cleanup
after history rewriting operation.
Shipping it in the same release as the 'internal-phase' groups the associated
`requires` entry. The important bit is to have support for this phase in the
earliest version of mercurial possible. Adding the UI to manipulate this new
phase later seems fine.
The current plan for archived usage and user interface are as follow. On a
repository with internal-phase on and evolution off:
* history rewriting command set rewritten changeset in the archived phase.
(This mean updating the cleanupnodes method).
* keep `hg unbundle .hg/strip-backup/X.hg` as a way to restore changeset for
now
(backup bundle need to contains phase data)
* [maybe] add a `hg strip --soft` advance flag
(a light way to expose the feature without getting in the way of a better
UI)
Mercurial 4.8 freeze is too close to get the above in by then.
We don't introduce a new repository `requirement` as we reuse the one
introduced with the 'archived' phase during the 4.8 cycle.
author | Boris Feld <boris.feld@octobus.net> |
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date | Wed, 17 Oct 2018 14:47:01 +0200 |
parents | 6ebe899b6551 |
children | 42d2b31cee0b |
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1 create verbosemmap.py |
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2 $ cat << EOF > verbosemmap.py |
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3 > # extension to make util.mmapread verbose |
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4 > |
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5 > from __future__ import absolute_import |
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6 > |
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7 > from mercurial import ( |
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8 > extensions, |
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9 > pycompat, |
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10 > util, |
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11 > ) |
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12 > |
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13 > def extsetup(ui): |
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14 > def mmapread(orig, fp): |
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15 > ui.write(b"mmapping %s\n" % pycompat.bytestr(fp.name)) |
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16 > ui.flush() |
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17 > return orig(fp) |
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18 > |
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19 > extensions.wrapfunction(util, 'mmapread', mmapread) |
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20 > EOF |
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21 |
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22 setting up base repo |
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23 $ hg init a |
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24 $ cd a |
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25 $ touch a |
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26 $ hg add a |
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27 $ hg commit -qm base |
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28 $ for i in `$TESTDIR/seq.py 1 100` ; do |
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29 > echo $i > a |
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30 > hg commit -qm $i |
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31 > done |
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32 |
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33 set up verbosemmap extension |
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34 $ cat << EOF >> $HGRCPATH |
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35 > [extensions] |
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36 > verbosemmap=$TESTTMP/verbosemmap.py |
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37 > EOF |
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38 |
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39 mmap index which is now more than 4k long |
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40 $ hg log -l 5 -T '{rev}\n' --config experimental.mmapindexthreshold=4k |
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41 mmapping $TESTTMP/a/.hg/store/00changelog.i |
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42 100 |
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43 99 |
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44 98 |
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45 97 |
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46 96 |
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47 |
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48 do not mmap index which is still less than 32k |
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49 $ hg log -l 5 -T '{rev}\n' --config experimental.mmapindexthreshold=32k |
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50 100 |
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51 99 |
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52 98 |
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53 97 |
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54 96 |
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55 |
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56 $ cd .. |