Mercurial > hg
view tests/test-bookmarks-merge.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 | 730b769fb634 |
children | ca275f7ec576 |
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# init $ hg init $ echo a > a $ hg add a $ hg commit -m'a' $ echo b > b $ hg add b $ hg commit -m'b' $ hg up -C 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo c > c $ hg add c $ hg commit -m'c' created new head # test merging of diverged bookmarks $ hg bookmark -r 1 "c@diverge" $ hg bookmark -r 1 b $ hg bookmark c $ hg bookmarks b 1:d2ae7f538514 * c 2:d36c0562f908 c@diverge 1:d2ae7f538514 $ hg merge "c@diverge" 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg commit -m'merge' $ hg bookmarks b 1:d2ae7f538514 * c 3:b8f96cf4688b $ hg up -C 3 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo d > d $ hg add d $ hg commit -m'd' $ hg up -C 3 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo e > e $ hg add e $ hg commit -m'e' created new head $ hg up -C 5 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg bookmark e $ hg bookmarks b 1:d2ae7f538514 c 3:b8f96cf4688b * e 5:26bee9c5bcf3 # the picked side is bookmarked $ hg up -C 4 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg merge abort: heads are bookmarked - please merge with an explicit rev (run 'hg heads' to see all heads) [255] # our revision is bookmarked $ hg up -C e 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg merge abort: no matching bookmark to merge - please merge with an explicit rev or bookmark (run 'hg heads' to see all heads) [255] # merge bookmark heads $ hg up -C 4 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo f > f $ hg commit -Am "f" adding f $ hg bookmarks -r 4 "e@diverged" $ hg up -q -C "e@diverged" $ hg merge 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg parents changeset: 4:a0546fcfe0fb bookmark: e@diverged user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: d changeset: 5:26bee9c5bcf3 bookmark: e parent: 3:b8f96cf4688b user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: e $ hg up -C e 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg bookmarks b 1:d2ae7f538514 c 3:b8f96cf4688b * e 5:26bee9c5bcf3 e@diverged 4:a0546fcfe0fb $ hg merge 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg commit -m'merge' $ hg bookmarks b 1:d2ae7f538514 c 3:b8f96cf4688b * e 7:ca784329f0ba # test warning when all heads are inactive bookmarks $ hg up -C 6 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo g > g $ hg commit -Am 'g' adding g $ hg bookmark -i g $ hg bookmarks b 1:d2ae7f538514 c 3:b8f96cf4688b e 7:ca784329f0ba g 8:04dd21731d95 $ hg heads changeset: 8:04dd21731d95 bookmark: g tag: tip parent: 6:be381d1126a0 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: g changeset: 7:ca784329f0ba bookmark: e parent: 5:26bee9c5bcf3 parent: 4:a0546fcfe0fb user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: merge $ hg merge abort: heads are bookmarked - please merge with an explicit rev (run 'hg heads' to see all heads) [255]