upstream/mercurial-mirror Files · tests/test-obsolete-tag-cache.t

largefiles: for update -C, only update largefiles when necessary...

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.

Gregory Szorc - - Load All Authors

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        $ cat >> $HGRCPATH << EOF

        > [extensions]

        > blackbox=

        > rebase=

        > mock=$TESTDIR/mockblackbox.py

        > 

        > [experimental]

        > evolution = createmarkers

        > EOF

      Create a repo with some tags

        $ hg init repo

        $ cd repo

        $ echo initial > foo

        $ hg -q commit -A -m initial

        $ hg tag -m 'test tag' test1

        $ echo first > first

        $ hg -q commit -A -m first

        $ hg tag -m 'test2 tag' test2

        $ hg -q up -r 0

        $ echo newhead > newhead

        $ hg commit -A -m newhead

        adding newhead

        created new head

        $ hg tag -m 'test head 2 tag' head2

        $ hg log -G -T '{rev}:{node|short} {tags} {desc}\n'

        @  5:2942a772f72a tip test head 2 tag

        |

        o  4:042eb6bfcc49 head2 newhead

        |

        | o  3:c3cb30f2d2cd  test2 tag

        | |

        | o  2:d75775ffbc6b test2 first

        | |

        | o  1:5f97d42da03f  test tag

        |/

        o  0:55482a6fb4b1 test1 initial

      Trigger tags cache population by doing something that accesses tags info

        $ hg tags

        tip                                5:2942a772f72a

        head2                              4:042eb6bfcc49

        test2                              2:d75775ffbc6b

        test1                              0:55482a6fb4b1

        $ cat .hg/cache/tags2-visible

        5 2942a772f72a444bef4bef13874d515f50fa27b6

        042eb6bfcc4909bad84a1cbf6eb1ddf0ab587d41 head2

        55482a6fb4b1881fa8f746fd52cf6f096bb21c89 test1

        d75775ffbc6bca1794d300f5571272879bd280da test2

      Hiding a non-tip changeset should change filtered hash and cause tags recompute

        $ hg debugobsolete -d '0 0' c3cb30f2d2cd0aae008cc91a07876e3c5131fd22 -u dummyuser

        $ hg tags

        tip                                5:2942a772f72a

        head2                              4:042eb6bfcc49

        test1                              0:55482a6fb4b1

        $ cat .hg/cache/tags2-visible

        5 2942a772f72a444bef4bef13874d515f50fa27b6 f34fbc9a9769ba9eff5aff3d008a6b49f85c08b1

        042eb6bfcc4909bad84a1cbf6eb1ddf0ab587d41 head2

        55482a6fb4b1881fa8f746fd52cf6f096bb21c89 test1

        $ hg blackbox -l 4

        1970/01/01 00:00:00 bob> tags

        1970/01/01 00:00:00 bob> 2/2 cache hits/lookups in * seconds (glob)

        1970/01/01 00:00:00 bob> writing .hg/cache/tags2-visible with 2 tags

        1970/01/01 00:00:00 bob> tags exited 0 after * seconds (glob)

      Hiding another changeset should cause the filtered hash to change

        $ hg debugobsolete -d '0 0' d75775ffbc6bca1794d300f5571272879bd280da -u dummyuser

        $ hg debugobsolete -d '0 0' 5f97d42da03fd56f3b228b03dfe48af5c0adf75b -u dummyuser

        $ hg tags

        tip                                5:2942a772f72a

        head2                              4:042eb6bfcc49

        $ cat .hg/cache/tags2-visible

        5 2942a772f72a444bef4bef13874d515f50fa27b6 2fce1eec33263d08a4d04293960fc73a555230e4

        042eb6bfcc4909bad84a1cbf6eb1ddf0ab587d41 head2

        $ hg blackbox -l 4

        1970/01/01 00:00:00 bob> tags

        1970/01/01 00:00:00 bob> 1/1 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> tags exited 0 after * seconds (glob)

      Resolving tags on an unfiltered repo writes a separate tags cache

        $ hg --hidden tags

        tip                                5:2942a772f72a

        head2                              4:042eb6bfcc49

        test2                              2:d75775ffbc6b

        test1                              0:55482a6fb4b1

        $ cat .hg/cache/tags2

        5 2942a772f72a444bef4bef13874d515f50fa27b6

        042eb6bfcc4909bad84a1cbf6eb1ddf0ab587d41 head2

        55482a6fb4b1881fa8f746fd52cf6f096bb21c89 test1

        d75775ffbc6bca1794d300f5571272879bd280da test2

        $ hg blackbox -l 4

        1970/01/01 00:00:00 bob> --hidden tags

        1970/01/01 00:00:00 bob> 2/2 cache hits/lookups in * seconds (glob)

        1970/01/01 00:00:00 bob> writing .hg/cache/tags2 with 3 tags

        1970/01/01 00:00:00 bob> --hidden tags exited 0 after * seconds (glob)

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				$ cat >> $HGRCPATH << EOF
				> [extensions]
				> blackbox=
				> rebase=
				> mock=$TESTDIR/mockblackbox.py
				>
				> [experimental]
				> evolution = createmarkers
				> EOF

				Create a repo with some tags

				$ hg init repo
				$ cd repo
				$ echo initial > foo
				$ hg -q commit -A -m initial
				$ hg tag -m 'test tag' test1
				$ echo first > first
				$ hg -q commit -A -m first
				$ hg tag -m 'test2 tag' test2
				$ hg -q up -r 0
				$ echo newhead > newhead
				$ hg commit -A -m newhead
				adding newhead
				created new head
				$ hg tag -m 'test head 2 tag' head2

				$ hg log -G -T '{rev}:{node\|short} {tags} {desc}\n'
				@ 5:2942a772f72a tip test head 2 tag
				\|
				o 4:042eb6bfcc49 head2 newhead
				\|
				\| o 3:c3cb30f2d2cd test2 tag
				\| \|
				\| o 2:d75775ffbc6b test2 first
				\| \|
				\| o 1:5f97d42da03f test tag
				\|/
				o 0:55482a6fb4b1 test1 initial


				Trigger tags cache population by doing something that accesses tags info

				$ hg tags
				tip 5:2942a772f72a
				head2 4:042eb6bfcc49
				test2 2:d75775ffbc6b
				test1 0:55482a6fb4b1

				$ cat .hg/cache/tags2-visible
				5 2942a772f72a444bef4bef13874d515f50fa27b6
				042eb6bfcc4909bad84a1cbf6eb1ddf0ab587d41 head2
				55482a6fb4b1881fa8f746fd52cf6f096bb21c89 test1
				d75775ffbc6bca1794d300f5571272879bd280da test2

				Hiding a non-tip changeset should change filtered hash and cause tags recompute

				$ hg debugobsolete -d '0 0' c3cb30f2d2cd0aae008cc91a07876e3c5131fd22 -u dummyuser

				$ hg tags
				tip 5:2942a772f72a
				head2 4:042eb6bfcc49
				test1 0:55482a6fb4b1

				$ cat .hg/cache/tags2-visible
				5 2942a772f72a444bef4bef13874d515f50fa27b6 f34fbc9a9769ba9eff5aff3d008a6b49f85c08b1
				042eb6bfcc4909bad84a1cbf6eb1ddf0ab587d41 head2
				55482a6fb4b1881fa8f746fd52cf6f096bb21c89 test1

				$ hg blackbox -l 4
				1970/01/01 00:00:00 bob> tags
				1970/01/01 00:00:00 bob> 2/2 cache hits/lookups in * seconds (glob)
				1970/01/01 00:00:00 bob> writing .hg/cache/tags2-visible with 2 tags
				1970/01/01 00:00:00 bob> tags exited 0 after * seconds (glob)

				Hiding another changeset should cause the filtered hash to change

				$ hg debugobsolete -d '0 0' d75775ffbc6bca1794d300f5571272879bd280da -u dummyuser
				$ hg debugobsolete -d '0 0' 5f97d42da03fd56f3b228b03dfe48af5c0adf75b -u dummyuser

				$ hg tags
				tip 5:2942a772f72a
				head2 4:042eb6bfcc49

				$ cat .hg/cache/tags2-visible
				5 2942a772f72a444bef4bef13874d515f50fa27b6 2fce1eec33263d08a4d04293960fc73a555230e4
				042eb6bfcc4909bad84a1cbf6eb1ddf0ab587d41 head2

				$ hg blackbox -l 4
				1970/01/01 00:00:00 bob> tags
				1970/01/01 00:00:00 bob> 1/1 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> tags exited 0 after * seconds (glob)

				Resolving tags on an unfiltered repo writes a separate tags cache

				$ hg --hidden tags
				tip 5:2942a772f72a
				head2 4:042eb6bfcc49
				test2 2:d75775ffbc6b
				test1 0:55482a6fb4b1

				$ cat .hg/cache/tags2
				5 2942a772f72a444bef4bef13874d515f50fa27b6
				042eb6bfcc4909bad84a1cbf6eb1ddf0ab587d41 head2
				55482a6fb4b1881fa8f746fd52cf6f096bb21c89 test1
				d75775ffbc6bca1794d300f5571272879bd280da test2

				$ hg blackbox -l 4
				1970/01/01 00:00:00 bob> --hidden tags
				1970/01/01 00:00:00 bob> 2/2 cache hits/lookups in * seconds (glob)
				1970/01/01 00:00:00 bob> writing .hg/cache/tags2 with 3 tags
				1970/01/01 00:00:00 bob> --hidden tags exited 0 after * seconds (glob)