Mercurial > hg
view tests/test-rebase-detach.t @ 18986:2f7186400a07
ancestor: a new algorithm that is faster for nodes near tip
Instead of walking all the way to the root of the DAG, we generate
a set of candidate GCA revs, then figure out which ones will win
the race to the root (usually without needing to traverse all the
way to the root).
In the common case of nodes that are close to each other in both
revision number and topology, this is usually a big win: it makes
"hg --time debugancestors" up to 9 times faster than the more general
ancestor function when measured on heads of the linux-2.6 hg repo.
Victory is not assured, however. The older function can still win
by a large margin if one node is much closer to the root than the
other, or by a much smaller amount if one is an ancestor of the
other.
For now, we've also got a small paranoid harness function that calls
both ancestor functions on every input and ensures that they give
equivalent answers.
Even without the checker function, the old ancestor function needs
to stay alive for the time being, as its generality is used by
context.filectx.merge.
author | Bryan O'Sullivan <bryano@fb.com> |
---|---|
date | Tue, 16 Apr 2013 10:08:18 -0700 |
parents | e5d9441ec281 |
children | c23c62209cc4 |
line wrap: on
line source
$ cat >> $HGRCPATH <<EOF > [extensions] > graphlog= > rebase= > > [phases] > publish=False > > [alias] > tglog = log -G --template "{rev}: '{desc}' {branches}\n" > EOF $ hg init a $ cd a $ hg unbundle "$TESTDIR/bundles/rebase.hg" adding changesets adding manifests adding file changes added 8 changesets with 7 changes to 7 files (+2 heads) (run 'hg heads' to see heads, 'hg merge' to merge) $ hg up tip 3 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd .. Rebasing D onto H detaching from C: $ hg clone -q -u . a a1 $ cd a1 $ hg tglog @ 7: 'H' | | o 6: 'G' |/| o | 5: 'F' | | | o 4: 'E' |/ | o 3: 'D' | | | o 2: 'C' | | | o 1: 'B' |/ o 0: 'A' $ hg phase --force --secret 3 $ hg rebase -s 3 -d 7 saved backup bundle to $TESTTMP/a1/.hg/strip-backup/*-backup.hg (glob) $ hg log -G --template "{rev}:{phase} '{desc}' {branches}\n" @ 7:secret 'D' | o 6:draft 'H' | | o 5:draft 'G' |/| o | 4:draft 'F' | | | o 3:draft 'E' |/ | o 2:draft 'C' | | | o 1:draft 'B' |/ o 0:draft 'A' $ hg manifest A D F H $ cd .. Rebasing C onto H detaching from B: $ hg clone -q -u . a a2 $ cd a2 $ hg tglog @ 7: 'H' | | o 6: 'G' |/| o | 5: 'F' | | | o 4: 'E' |/ | o 3: 'D' | | | o 2: 'C' | | | o 1: 'B' |/ o 0: 'A' $ hg rebase -s 2 -d 7 saved backup bundle to $TESTTMP/a2/.hg/strip-backup/*-backup.hg (glob) $ hg tglog @ 7: 'D' | o 6: 'C' | o 5: 'H' | | o 4: 'G' |/| o | 3: 'F' | | | o 2: 'E' |/ | o 1: 'B' |/ o 0: 'A' $ hg manifest A C D F H $ cd .. Rebasing B onto H using detach (same as not using it): $ hg clone -q -u . a a3 $ cd a3 $ hg tglog @ 7: 'H' | | o 6: 'G' |/| o | 5: 'F' | | | o 4: 'E' |/ | o 3: 'D' | | | o 2: 'C' | | | o 1: 'B' |/ o 0: 'A' $ hg rebase -s 1 -d 7 saved backup bundle to $TESTTMP/a3/.hg/strip-backup/*-backup.hg (glob) $ hg tglog @ 7: 'D' | o 6: 'C' | o 5: 'B' | o 4: 'H' | | o 3: 'G' |/| o | 2: 'F' | | | o 1: 'E' |/ o 0: 'A' $ hg manifest A B C D F H $ cd .. Rebasing C onto H detaching from B and collapsing: $ hg clone -q -u . a a4 $ cd a4 $ hg phase --force --secret 3 $ hg tglog @ 7: 'H' | | o 6: 'G' |/| o | 5: 'F' | | | o 4: 'E' |/ | o 3: 'D' | | | o 2: 'C' | | | o 1: 'B' |/ o 0: 'A' $ hg rebase --collapse -s 2 -d 7 saved backup bundle to $TESTTMP/a4/.hg/strip-backup/*-backup.hg (glob) $ hg log -G --template "{rev}:{phase} '{desc}' {branches}\n" @ 6:secret 'Collapsed revision | * C | * D' o 5:draft 'H' | | o 4:draft 'G' |/| o | 3:draft 'F' | | | o 2:draft 'E' |/ | o 1:draft 'B' |/ o 0:draft 'A' $ hg manifest A C D F H $ cd .. Rebasing across null as ancestor $ hg clone -q -U a a5 $ cd a5 $ echo x > x $ hg add x $ hg ci -m "extra branch" created new head $ hg tglog @ 8: 'extra branch' o 7: 'H' | | o 6: 'G' |/| o | 5: 'F' | | | o 4: 'E' |/ | o 3: 'D' | | | o 2: 'C' | | | o 1: 'B' |/ o 0: 'A' $ hg rebase -s 1 -d tip saved backup bundle to $TESTTMP/a5/.hg/strip-backup/*-backup.hg (glob) $ hg tglog @ 8: 'D' | o 7: 'C' | o 6: 'B' | o 5: 'extra branch' o 4: 'H' | | o 3: 'G' |/| o | 2: 'F' | | | o 1: 'E' |/ o 0: 'A' $ hg rebase -d 5 -s 7 saved backup bundle to $TESTTMP/a5/.hg/strip-backup/13547172c9c0-backup.hg (glob) $ hg tglog @ 8: 'D' | o 7: 'C' | | o 6: 'B' |/ o 5: 'extra branch' o 4: 'H' | | o 3: 'G' |/| o | 2: 'F' | | | o 1: 'E' |/ o 0: 'A' $ cd .. Verify that target is not selected as external rev (issue3085) $ hg clone -q -U a a6 $ cd a6 $ hg up -q 6 $ echo "I" >> E $ hg ci -m "I" $ hg merge 7 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg ci -m "Merge" $ echo "J" >> F $ hg ci -m "J" $ hg rebase -s 8 -d 7 --collapse --config ui.merge=internal:other saved backup bundle to $TESTTMP/a6/.hg/strip-backup/*-backup.hg (glob) $ hg tglog @ 8: 'Collapsed revision | * I | * Merge | * J' o 7: 'H' | | o 6: 'G' |/| o | 5: 'F' | | | o 4: 'E' |/ | o 3: 'D' | | | o 2: 'C' | | | o 1: 'B' |/ o 0: 'A' $ hg parents changeset: 8:9472f4b1d736 tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: Collapsed revision $ cd .. Ensure --continue restores a correct state (issue3046) and phase: $ hg clone -q a a7 $ cd a7 $ hg up -q 3 $ echo 'H2' > H $ hg ci -A -m 'H2' adding H $ hg phase --force --secret 8 $ hg rebase -s 8 -d 7 --config ui.merge=internal:fail merging H warning: conflicts during merge. merging H incomplete! (edit conflicts, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue) [1] $ hg resolve --all -t internal:local $ hg rebase -c saved backup bundle to $TESTTMP/a7/.hg/strip-backup/6215fafa5447-backup.hg (glob) $ hg log -G --template "{rev}:{phase} '{desc}' {branches}\n" @ 7:draft 'H' | | o 6:draft 'G' |/| o | 5:draft 'F' | | | o 4:draft 'E' |/ | o 3:draft 'D' | | | o 2:draft 'C' | | | o 1:draft 'B' |/ o 0:draft 'A' $ cd ..