Mercurial > hg
annotate tests/test-mq-subrepo-svn.t @ 49568:da48f170d203
rust-status: query fs traversal metadata lazily
Currently, any time the status algorithm needs to read a directory from the
filesystem (because the stat-only optimization is not available), it also
stats each directory entry eagerly.
Stat'ing the entries is only needed in a few cases (like when checking
the mtime of a directory for caching): this patch creates a wrapper struct
`DirEntry` that only stats the directory entry it represents when needed.
Excerpt of an `strace` before this change on Mozilla Central:
```
openat(AT_FDCWD, ".", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=3540, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x55dc970bd440 /* 139 entries */, 32768) = 5072
statx(3, ".hg", AT_STATX_SYNC_AS_STAT|AT_SYMLINK_NOFOLLOW, STATX_ALL, {stx_mask=STATX_ALL|STATX_MNT_ID, stx_attributes=0, stx_mode=S_IFDIR|0755, stx_size=772, ...}) = 0
[... 135 other successful `statx` calls]
getdents64(3, 0x55dc970bd440 /* 0 entries */, 32768) = 0
close(3) = 0
```
After this change:
```
openat(AT_FDCWD, ".", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=3540, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x561567c10190 /* 139 entries */, 32768) = 5072
getdents64(3, 0x561567c10190 /* 0 entries */, 32768) = 0
close(3) = 0
```
author | Raphaël Gomès <rgomes@octobus.net> |
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date | Wed, 19 Oct 2022 12:38:06 +0200 |
parents | 075a553028e2 |
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1 #require svn13 |
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2 |
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3 $ cat <<EOF >> $HGRCPATH |
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4 > [extensions] |
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5 > mq = |
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6 > [diff] |
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7 > nodates = 1 |
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8 > [subrepos] |
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9 > allowed = true |
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10 > svn:allowed = true |
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11 > EOF |
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12 |
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13 fn to create new repository, and cd into it |
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14 $ mkrepo() { |
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15 > hg init $1 |
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16 > cd $1 |
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17 > hg qinit |
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18 > } |
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19 |
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20 |
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21 handle svn subrepos safely |
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22 |
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23 $ svnadmin create svn-repo-2499 |
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24 |
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25 $ SVNREPOPATH=`pwd`/svn-repo-2499/project |
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26 $ SVNREPOURL="`"$PYTHON" $TESTDIR/svnurlof.py \"$SVNREPOPATH\"`" |
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27 |
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28 $ mkdir -p svn-project-2499/trunk |
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29 $ svn import -qm 'init project' svn-project-2499 "$SVNREPOURL" |
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30 |
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31 qnew on repo w/svn subrepo |
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32 $ mkrepo repo-2499-svn-subrepo |
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33 $ svn co "$SVNREPOURL"/trunk sub |
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34 Checked out revision 1. |
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35 $ echo 'sub = [svn]sub' >> .hgsub |
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36 $ hg add .hgsub |
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37 $ hg status -S -X '**/format' |
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38 A .hgsub |
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39 $ hg qnew -m0 0.diff |
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40 $ cd sub |
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41 $ echo foo > a |
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42 $ svn add a |
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43 A a |
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44 $ svn st |
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45 A* a (glob) |
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46 $ cd .. |
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47 $ hg status -S # doesn't show status for svn subrepos (yet) |
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48 $ hg qnew -m1 1.diff |
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49 abort: uncommitted changes in subrepository "sub" |
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50 [255] |
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51 |
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52 $ cd .. |