Mercurial > hg
view tests/test-tags.t @ 24787:9d5c27890790
largefiles: for update -C, only update largefiles when necessary
Before, a --clean update with largefiles would use the "optimization" that it
didn't read hashes from standin files before and after the update. Instead of
trusting the content of the standin files, it would rehash all the actual
largefiles that lfdirstate reported clean and update the standins that didn't
have the expected content. It could thus in some "impossible" situations
automatically recover from some "largefile got out sync with its standin"
issues (even there apparently still were weird corner cases where it could
fail). This extra checking is similar to what core --clean intentionally do
not do, and it made update --clean unbearable slow.
Usually in core Mercurial, --clean will rely on the dirstate to find the files
it should update. (It is thus intentionally possible (when trying to trick the
system or if there should be bugs) to end up in situations where --clean not
will restore the working directory content correctly.) Checking every file when
we "know" it is ok is however not an option - that would be too slow.
Instead, trust the content of the standin files. Use the same logic for --clean
as for linear updates and trust the dirstate and that our "logic" will keep
them in sync. It is much cheaper to just rehash the largefiles reported dirty
by a status walk and read all standins than to hash largefiles.
Most of the changes are just a change of indentation now when the different
kinds of updates no longer are handled that differently. Standins for added
files are however only written when doing a normal update, while deleted and
removed files only will be updated for --clean updates.
author | Mads Kiilerich <madski@unity3d.com> |
---|---|
date | Wed, 15 Apr 2015 15:22:16 -0400 |
parents | a698e088ad29 |
children | f379428a0754 |
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setup $ cat >> $HGRCPATH << EOF > [extensions] > blackbox= > mock=$TESTDIR/mockblackbox.py > EOF Helper functions: $ cacheexists() { > [ -f .hg/cache/tags2-visible ] && echo "tag cache exists" || echo "no tag cache" > } $ fnodescacheexists() { > [ -f .hg/cache/hgtagsfnodes1 ] && echo "fnodes cache exists" || echo "no fnodes cache" > } $ dumptags() { > rev=$1 > echo "rev $rev: .hgtags:" > hg cat -r$rev .hgtags > } # XXX need to test that the tag cache works when we strip an old head # and add a new one rooted off non-tip: i.e. node and rev of tip are the # same, but stuff has changed behind tip. Setup: $ hg init t $ cd t $ cacheexists no tag cache $ fnodescacheexists no fnodes cache $ hg id 000000000000 tip $ cacheexists no tag cache $ fnodescacheexists no fnodes cache $ echo a > a $ hg add a $ hg commit -m "test" $ hg co 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg identify acb14030fe0a tip $ cacheexists tag cache exists No fnodes cache because .hgtags file doesn't exist (this is an implementation detail) $ fnodescacheexists no fnodes cache Try corrupting the cache $ printf 'a b' > .hg/cache/tags2-visible $ hg identify acb14030fe0a tip $ cacheexists tag cache exists $ fnodescacheexists no fnodes cache $ hg identify acb14030fe0a tip Create local tag with long name: $ T=`hg identify --debug --id` $ hg tag -l "This is a local tag with a really long name!" $ hg tags tip 0:acb14030fe0a This is a local tag with a really long name! 0:acb14030fe0a $ rm .hg/localtags Create a tag behind hg's back: $ echo "$T first" > .hgtags $ cat .hgtags acb14030fe0a21b60322c440ad2d20cf7685a376 first $ hg add .hgtags $ hg commit -m "add tags" $ hg tags tip 1:b9154636be93 first 0:acb14030fe0a $ hg identify b9154636be93 tip We should have a fnodes cache now that we have a real tag The cache should have an empty entry for rev 0 and a valid entry for rev 1. $ fnodescacheexists fnodes cache exists $ f --size --hexdump .hg/cache/hgtagsfnodes1 .hg/cache/hgtagsfnodes1: size=48 0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................| 0010: ff ff ff ff ff ff ff ff b9 15 46 36 26 b7 b4 a7 |..........F6&...| 0020: 73 e0 9e e3 c5 2f 51 0e 19 e0 5e 1f f9 66 d8 59 |s..../Q...^..f.Y| Repeat with cold tag cache: $ rm -f .hg/cache/tags2-visible .hg/cache/hgtagsfnodes1 $ hg identify b9154636be93 tip $ fnodescacheexists fnodes cache exists $ f --size --hexdump .hg/cache/hgtagsfnodes1 .hg/cache/hgtagsfnodes1: size=48 0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................| 0010: ff ff ff ff ff ff ff ff b9 15 46 36 26 b7 b4 a7 |..........F6&...| 0020: 73 e0 9e e3 c5 2f 51 0e 19 e0 5e 1f f9 66 d8 59 |s..../Q...^..f.Y| And again, but now unable to write tag cache: #if unix-permissions $ rm -f .hg/cache/tags2-visible .hg/cache/hgtagsfnodes1 $ chmod 555 .hg/cache $ hg identify b9154636be93 tip $ chmod 755 .hg/cache #endif Tag cache debug info written to blackbox log $ rm -f .hg/cache/tags2-visible .hg/cache/hgtagsfnodes1 $ hg identify b9154636be93 tip $ hg blackbox -l 5 1970/01/01 00:00:00 bob> identify 1970/01/01 00:00:00 bob> writing 48 bytes to cache/hgtagsfnodes1 1970/01/01 00:00:00 bob> 0/1 cache hits/lookups in * seconds (glob) 1970/01/01 00:00:00 bob> writing .hg/cache/tags2-visible with 1 tags 1970/01/01 00:00:00 bob> identify exited 0 after ?.?? seconds (glob) Failure to acquire lock results in no write $ rm -f .hg/cache/tags2-visible .hg/cache/hgtagsfnodes1 $ echo 'foo:1' > .hg/wlock $ hg identify b9154636be93 tip $ hg blackbox -l 5 1970/01/01 00:00:00 bob> identify 1970/01/01 00:00:00 bob> not writing .hg/cache/hgtagsfnodes1 because lock held 1970/01/01 00:00:00 bob> 0/1 cache hits/lookups in * seconds (glob) 1970/01/01 00:00:00 bob> writing .hg/cache/tags2-visible with 1 tags 1970/01/01 00:00:00 bob> identify exited 0 after * seconds (glob) $ fnodescacheexists no fnodes cache $ rm .hg/wlock $ rm -f .hg/cache/tags2-visible .hg/cache/hgtagsfnodes1 $ hg identify b9154636be93 tip Create a branch: $ echo bb > a $ hg status M a $ hg identify b9154636be93+ tip $ hg co first 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg id acb14030fe0a+ first $ hg -v id acb14030fe0a+ first $ hg status M a $ echo 1 > b $ hg add b $ hg commit -m "branch" created new head Creating a new commit shouldn't append the .hgtags fnodes cache until tags info is accessed $ f --size --hexdump .hg/cache/hgtagsfnodes1 .hg/cache/hgtagsfnodes1: size=48 0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................| 0010: ff ff ff ff ff ff ff ff b9 15 46 36 26 b7 b4 a7 |..........F6&...| 0020: 73 e0 9e e3 c5 2f 51 0e 19 e0 5e 1f f9 66 d8 59 |s..../Q...^..f.Y| $ hg id c8edf04160c7 tip First 4 bytes of record 3 are changeset fragment $ f --size --hexdump .hg/cache/hgtagsfnodes1 .hg/cache/hgtagsfnodes1: size=72 0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................| 0010: ff ff ff ff ff ff ff ff b9 15 46 36 26 b7 b4 a7 |..........F6&...| 0020: 73 e0 9e e3 c5 2f 51 0e 19 e0 5e 1f f9 66 d8 59 |s..../Q...^..f.Y| 0030: c8 ed f0 41 00 00 00 00 00 00 00 00 00 00 00 00 |...A............| 0040: 00 00 00 00 00 00 00 00 |........| Merge the two heads: $ hg merge 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg id c8edf04160c7+b9154636be93+ tip $ hg status M .hgtags $ hg commit -m "merge" Create a fake head, make sure tag not visible afterwards: $ cp .hgtags tags $ hg tag last $ hg rm .hgtags $ hg commit -m "remove" $ mv tags .hgtags $ hg add .hgtags $ hg commit -m "readd" $ $ hg tags tip 6:35ff301afafe first 0:acb14030fe0a Add invalid tags: $ echo "spam" >> .hgtags $ echo >> .hgtags $ echo "foo bar" >> .hgtags $ echo "a5a5 invalid" >> .hg/localtags $ cat .hgtags acb14030fe0a21b60322c440ad2d20cf7685a376 first spam foo bar $ hg commit -m "tags" Report tag parse error on other head: $ hg up 3 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo 'x y' >> .hgtags $ hg commit -m "head" created new head $ hg tags .hgtags@75d9f02dfe28, line 2: cannot parse entry .hgtags@75d9f02dfe28, line 4: node 'foo' is not well formed .hgtags@c4be69a18c11, line 2: node 'x' is not well formed tip 8:c4be69a18c11 first 0:acb14030fe0a $ hg tip changeset: 8:c4be69a18c11 tag: tip parent: 3:ac5e980c4dc0 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: head Test tag precedence rules: $ cd .. $ hg init t2 $ cd t2 $ echo foo > foo $ hg add foo $ hg ci -m 'add foo' # rev 0 $ hg tag bar # rev 1 $ echo >> foo $ hg ci -m 'change foo 1' # rev 2 $ hg up -C 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg tag -r 1 -f bar # rev 3 $ hg up -C 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo >> foo $ hg ci -m 'change foo 2' # rev 4 created new head $ hg tags tip 4:0c192d7d5e6b bar 1:78391a272241 Repeat in case of cache effects: $ hg tags tip 4:0c192d7d5e6b bar 1:78391a272241 Detailed dump of tag info: $ hg heads -q # expect 4, 3, 2 4:0c192d7d5e6b 3:6fa450212aeb 2:7a94127795a3 $ dumptags 2 rev 2: .hgtags: bbd179dfa0a71671c253b3ae0aa1513b60d199fa bar $ dumptags 3 rev 3: .hgtags: bbd179dfa0a71671c253b3ae0aa1513b60d199fa bar bbd179dfa0a71671c253b3ae0aa1513b60d199fa bar 78391a272241d70354aa14c874552cad6b51bb42 bar $ dumptags 4 rev 4: .hgtags: bbd179dfa0a71671c253b3ae0aa1513b60d199fa bar Dump cache: $ cat .hg/cache/tags2-visible 4 0c192d7d5e6b78a714de54a2e9627952a877e25a bbd179dfa0a71671c253b3ae0aa1513b60d199fa bar bbd179dfa0a71671c253b3ae0aa1513b60d199fa bar 78391a272241d70354aa14c874552cad6b51bb42 bar $ f --size --hexdump .hg/cache/hgtagsfnodes1 .hg/cache/hgtagsfnodes1: size=120 0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................| 0010: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................| 0020: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................| 0030: 7a 94 12 77 0c 04 f2 a8 af 31 de 17 fa b7 42 28 |z..w.....1....B(| 0040: 78 ee 5a 2d ad bc 94 3d 6f a4 50 21 7d 3b 71 8c |x.Z-...=o.P!};q.| 0050: 96 4e f3 7b 89 e5 50 eb da fd 57 89 e7 6c e1 b0 |.N.{..P...W..l..| 0060: 0c 19 2d 7d 0c 04 f2 a8 af 31 de 17 fa b7 42 28 |..-}.....1....B(| 0070: 78 ee 5a 2d ad bc 94 3d |x.Z-...=| Corrupt the .hgtags fnodes cache Extra junk data at the end should get overwritten on next cache update $ echo extra >> .hg/cache/hgtagsfnodes1 $ echo dummy1 > foo $ hg commit -m throwaway1 $ hg tags tip 5:8dbfe60eff30 bar 1:78391a272241 $ hg blackbox -l 5 1970/01/01 00:00:00 bob> tags 1970/01/01 00:00:00 bob> writing 24 bytes to cache/hgtagsfnodes1 1970/01/01 00:00:00 bob> 2/3 cache hits/lookups in * seconds (glob) 1970/01/01 00:00:00 bob> writing .hg/cache/tags2-visible with 1 tags 1970/01/01 00:00:00 bob> tags exited 0 after * seconds (glob) #if unix-permissions no-root Errors writing to .hgtags fnodes cache are silently ignored $ echo dummy2 > foo $ hg commit -m throwaway2 $ chmod a-w .hg/cache/hgtagsfnodes1 $ rm -f .hg/cache/tags2-visible $ hg tags tip 6:b968051b5cf3 bar 1:78391a272241 $ hg blackbox -l 5 1970/01/01 00:00:00 bob> tags 1970/01/01 00:00:00 bob> couldn't write cache/hgtagsfnodes1: [Errno 13] Permission denied: '$TESTTMP/t2/.hg/cache/hgtagsfnodes1' 1970/01/01 00:00:00 bob> 2/3 cache hits/lookups in * seconds (glob) 1970/01/01 00:00:00 bob> writing .hg/cache/tags2-visible with 1 tags 1970/01/01 00:00:00 bob> tags exited 0 after * seconds (glob) $ chmod a+w .hg/cache/hgtagsfnodes1 #endif $ rm -f .hg/cache/tags2-visible $ hg tags tip 6:b968051b5cf3 bar 1:78391a272241 $ hg blackbox -l 5 1970/01/01 00:00:00 bob> tags 1970/01/01 00:00:00 bob> writing 24 bytes to cache/hgtagsfnodes1 1970/01/01 00:00:00 bob> 2/3 cache hits/lookups in * seconds (glob) 1970/01/01 00:00:00 bob> writing .hg/cache/tags2-visible with 1 tags 1970/01/01 00:00:00 bob> tags exited 0 after * seconds (glob) $ f --size .hg/cache/hgtagsfnodes1 .hg/cache/hgtagsfnodes1: size=168 Stripping doesn't truncate the tags cache until new data is available $ hg -q --config extensions.strip= strip -r 5 --no-backup $ hg tags tip 4:0c192d7d5e6b bar 1:78391a272241 $ hg blackbox -l 4 1970/01/01 00:00:00 bob> tags 1970/01/01 00:00:00 bob> 3/3 cache hits/lookups in * seconds (glob) 1970/01/01 00:00:00 bob> writing .hg/cache/tags2-visible with 1 tags 1970/01/01 00:00:00 bob> tags exited 0 after * seconds (glob) $ f --size .hg/cache/hgtagsfnodes1 .hg/cache/hgtagsfnodes1: size=168 $ echo dummy > foo $ hg commit -m throwaway3 $ hg tags tip 5:035f65efb448 bar 1:78391a272241 $ hg blackbox -l 5 1970/01/01 00:00:00 bob> tags 1970/01/01 00:00:00 bob> writing 24 bytes to cache/hgtagsfnodes1 1970/01/01 00:00:00 bob> 2/3 cache hits/lookups in * seconds (glob) 1970/01/01 00:00:00 bob> writing .hg/cache/tags2-visible with 1 tags 1970/01/01 00:00:00 bob> tags exited 0 after * seconds (glob) $ f --size .hg/cache/hgtagsfnodes1 .hg/cache/hgtagsfnodes1: size=144 $ hg -q --config extensions.strip= strip -r 5 --no-backup Test tag removal: $ hg tag --remove bar # rev 5 $ hg tip -vp changeset: 5:5f6e8655b1c7 tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 files: .hgtags description: Removed tag bar diff -r 0c192d7d5e6b -r 5f6e8655b1c7 .hgtags --- a/.hgtags Thu Jan 01 00:00:00 1970 +0000 +++ b/.hgtags Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +1,3 @@ bbd179dfa0a71671c253b3ae0aa1513b60d199fa bar +78391a272241d70354aa14c874552cad6b51bb42 bar +0000000000000000000000000000000000000000 bar $ hg tags tip 5:5f6e8655b1c7 $ hg tags # again, try to expose cache bugs tip 5:5f6e8655b1c7 Remove nonexistent tag: $ hg tag --remove foobar abort: tag 'foobar' does not exist [255] $ hg tip changeset: 5:5f6e8655b1c7 tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: Removed tag bar Undo a tag with rollback: $ hg rollback # destroy rev 5 (restore bar) repository tip rolled back to revision 4 (undo commit) working directory now based on revision 4 $ hg tags tip 4:0c192d7d5e6b bar 1:78391a272241 $ hg tags tip 4:0c192d7d5e6b bar 1:78391a272241 Test tag rank: $ cd .. $ hg init t3 $ cd t3 $ echo foo > foo $ hg add foo $ hg ci -m 'add foo' # rev 0 $ hg tag -f bar # rev 1 bar -> 0 $ hg tag -f bar # rev 2 bar -> 1 $ hg tag -fr 0 bar # rev 3 bar -> 0 $ hg tag -fr 1 bar # rev 4 bar -> 1 $ hg tag -fr 0 bar # rev 5 bar -> 0 $ hg tags tip 5:85f05169d91d bar 0:bbd179dfa0a7 $ hg co 3 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo barbar > foo $ hg ci -m 'change foo' # rev 6 created new head $ hg tags tip 6:735c3ca72986 bar 0:bbd179dfa0a7 Don't allow moving tag without -f: $ hg tag -r 3 bar abort: tag 'bar' already exists (use -f to force) [255] $ hg tags tip 6:735c3ca72986 bar 0:bbd179dfa0a7 Strip 1: expose an old head: $ hg --config extensions.mq= strip 5 saved backup bundle to $TESTTMP/t3/.hg/strip-backup/*-backup.hg (glob) $ hg tags # partly stale cache tip 5:735c3ca72986 bar 1:78391a272241 $ hg tags # up-to-date cache tip 5:735c3ca72986 bar 1:78391a272241 Strip 2: destroy whole branch, no old head exposed $ hg --config extensions.mq= strip 4 saved backup bundle to $TESTTMP/t3/.hg/strip-backup/*-backup.hg (glob) $ hg tags # partly stale tip 4:735c3ca72986 bar 0:bbd179dfa0a7 $ rm -f .hg/cache/tags2-visible $ hg tags # cold cache tip 4:735c3ca72986 bar 0:bbd179dfa0a7 Test tag rank with 3 heads: $ cd .. $ hg init t4 $ cd t4 $ echo foo > foo $ hg add adding foo $ hg ci -m 'add foo' # rev 0 $ hg tag bar # rev 1 bar -> 0 $ hg tag -f bar # rev 2 bar -> 1 $ hg up -qC 0 $ hg tag -fr 2 bar # rev 3 bar -> 2 $ hg tags tip 3:197c21bbbf2c bar 2:6fa450212aeb $ hg up -qC 0 $ hg tag -m 'retag rev 0' -fr 0 bar # rev 4 bar -> 0, but bar stays at 2 Bar should still point to rev 2: $ hg tags tip 4:3b4b14ed0202 bar 2:6fa450212aeb Test that removing global/local tags does not get confused when trying to remove a tag of type X which actually only exists as a type Y: $ cd .. $ hg init t5 $ cd t5 $ echo foo > foo $ hg add adding foo $ hg ci -m 'add foo' # rev 0 $ hg tag -r 0 -l localtag $ hg tag --remove localtag abort: tag 'localtag' is not a global tag [255] $ $ hg tag -r 0 globaltag $ hg tag --remove -l globaltag abort: tag 'globaltag' is not a local tag [255] $ hg tags -v tip 1:a0b6fe111088 localtag 0:bbd179dfa0a7 local globaltag 0:bbd179dfa0a7 Test for issue3911 $ hg tag -r 0 -l localtag2 $ hg tag -l --remove localtag2 $ hg tags -v tip 1:a0b6fe111088 localtag 0:bbd179dfa0a7 local globaltag 0:bbd179dfa0a7 $ hg tag -r 1 -f localtag $ hg tags -v tip 2:5c70a037bb37 localtag 1:a0b6fe111088 globaltag 0:bbd179dfa0a7 $ hg tags -v tip 2:5c70a037bb37 localtag 1:a0b6fe111088 globaltag 0:bbd179dfa0a7 $ hg tag -r 1 localtag2 $ hg tags -v tip 3:bbfb8cd42be2 localtag2 1:a0b6fe111088 localtag 1:a0b6fe111088 globaltag 0:bbd179dfa0a7 $ hg tags -v tip 3:bbfb8cd42be2 localtag2 1:a0b6fe111088 localtag 1:a0b6fe111088 globaltag 0:bbd179dfa0a7 $ cd ..