Mercurial > hg
view tests/test-merge-default.t @ 18063:34a1a639d835
revset.children: ignore rev numbers that are too low
This replaces unnecessary parentrevs() calls with calculating min(parentset).
Even though the min operation is O(size of parentset), since parentrevs is
relatively expensive, this tradeoff almost always works in our favour. In a
repository with over 400,000 changesets, hg perfrevset "children(X)" takes:
Set X Before After
-1 0.51s 0.06s
-1000: 0.55s 0.08s
-10000: 0.56s 0.10s
-100000: 0.60s 0.25s
-100000:-99000 0.55s 0.19s
0:100000 0.60s 0.61s
all() 0.72s 0.74s
The relative performance is similar for Mercurial's own repository -- several
times faster in most cases, slightly slower for revisions close to 0 and
all().
author | Siddharth Agarwal <sid0@fb.com> |
---|---|
date | Fri, 07 Dec 2012 10:37:43 -0800 |
parents | fc8c7a5ccc4a |
children | 94f77624dbb5 |
line wrap: on
line source
$ hg init $ echo a > a $ hg commit -A -ma adding a $ echo b >> a $ hg commit -mb $ echo c >> a $ hg commit -mc $ hg up 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo d >> a $ hg commit -md created new head $ hg up 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo e >> a $ hg commit -me created new head $ hg up 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved Should fail because not at a head: $ hg merge abort: branch 'default' has 3 heads - please merge with an explicit rev (run 'hg heads .' to see heads) [255] $ hg up 1 files updated, 0 files merged, 0 files removed, 0 files unresolved Should fail because > 2 heads: $ HGMERGE=internal:other; export HGMERGE $ hg merge abort: branch 'default' has 3 heads - please merge with an explicit rev (run 'hg heads .' to see heads) [255] Should succeed: $ hg merge 2 0 files updated, 1 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg commit -mm1 Should succeed - 2 heads: $ hg merge -P changeset: 3:ea9ff125ff88 parent: 1:1846eede8b68 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: d $ hg merge 0 files updated, 1 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg commit -mm2 Should fail because at tip: $ hg merge abort: nothing to merge [255] $ hg up 0 1 files updated, 0 files merged, 0 files removed, 0 files unresolved Should fail because there is only one head: $ hg merge abort: nothing to merge (use 'hg update' instead) [255] $ hg up 3 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo f >> a $ hg branch foobranch marked working directory as branch foobranch (branches are permanent and global, did you want a bookmark?) $ hg commit -mf Should fail because merge with other branch: $ hg merge abort: branch 'foobranch' has one head - please merge with an explicit rev (run 'hg heads' to see all heads) [255] Test for issue2043: ensure that 'merge -P' shows ancestors of 6 that are not ancestors of 7, regardless of where their least common ancestor is. Merge preview not affected by common ancestor: $ hg up -q 7 $ hg merge -q -P 6 2:2d95304fed5d 4:f25cbe84d8b3 5:a431fabd6039 6:e88e33f3bf62