Mercurial > hg-stable
view tests/test-copies-in-changeset.t @ 42480:66c27df1be84
deltas: skip if projected delta size is bigger than previous snapshot
Before computing any delta, we get a basic estimation of the delta size we can
expect and the resulted compressed value. We then checks this projected size
against the `size(snapshotⁿ) > size(snapshotⁿ⁺¹)` constraint. This allows to
exclude potential base candidates before doing any expensive computation.
This only apply to the intermediate-snapshot case since this constraint only
apply to them.
For some pathological cases of a private repository this step provide a
significant performance boost (timing from `hg perfrevlogwrite`):
before: 14.115908 seconds
after: 3.145906 seconds
author | Valentin Gatien-Baron <vgatien-baron@janestreet.com> |
---|---|
date | Thu, 25 Apr 2019 22:50:33 +0200 |
parents | 027f1567f97f |
children | 170b070ec6a5 |
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$ cat >> $HGRCPATH << EOF > [experimental] > copies.write-to=changeset-only > copies.read-from=changeset-only > [alias] > changesetcopies = log -r . -T 'files: {files} > {extras % "{ifcontains("files", key, "{key}: {value}\n")}"} > {extras % "{ifcontains("copies", key, "{key}: {value}\n")}"}' > showcopies = log -r . -T '{file_copies % "{source} -> {name}\n"}' > [extensions] > rebase = > EOF Check that copies are recorded correctly $ hg init repo $ cd repo $ echo a > a $ hg add a $ hg ci -m initial $ hg cp a b $ hg cp a c $ hg cp a d $ hg ci -m 'copy a to b, c, and d' $ hg changesetcopies files: b c d filesadded: 0 1 2 p1copies: 0\x00a (esc) 1\x00a (esc) 2\x00a (esc) $ hg showcopies a -> b a -> c a -> d $ hg showcopies --config experimental.copies.read-from=compatibility a -> b a -> c a -> d $ hg showcopies --config experimental.copies.read-from=filelog-only Check that renames are recorded correctly $ hg mv b b2 $ hg ci -m 'rename b to b2' $ hg changesetcopies files: b b2 filesadded: 1 filesremoved: 0 p1copies: 1\x00b (esc) $ hg showcopies b -> b2 Rename onto existing file. This should get recorded in the changeset files list and in the extras, even though there is no filelog entry. $ hg cp b2 c --force $ hg st --copies M c b2 $ hg debugindex c rev linkrev nodeid p1 p2 0 1 b789fdd96dc2 000000000000 000000000000 $ hg ci -m 'move b onto d' $ hg changesetcopies files: c p1copies: 0\x00b2 (esc) $ hg showcopies b2 -> c $ hg debugindex c rev linkrev nodeid p1 p2 0 1 b789fdd96dc2 000000000000 000000000000 Create a merge commit with copying done during merge. $ hg co 0 0 files updated, 0 files merged, 3 files removed, 0 files unresolved $ hg cp a e $ hg cp a f $ hg ci -m 'copy a to e and f' created new head $ hg merge 3 3 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) File 'a' exists on both sides, so 'g' could be recorded as being from p1 or p2, but we currently always record it as being from p1 $ hg cp a g File 'd' exists only in p2, so 'h' should be from p2 $ hg cp d h File 'f' exists only in p1, so 'i' should be from p1 $ hg cp f i $ hg ci -m 'merge' $ hg changesetcopies files: g h i filesadded: 0 1 2 p1copies: 0\x00a (esc) 2\x00f (esc) p2copies: 1\x00d (esc) $ hg showcopies a -> g d -> h f -> i Test writing to both changeset and filelog $ hg cp a j $ hg ci -m 'copy a to j' --config experimental.copies.write-to=compatibility $ hg changesetcopies files: j filesadded: 0 filesremoved: p1copies: 0\x00a (esc) p2copies: $ hg debugdata j 0 \x01 (esc) copy: a copyrev: b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 \x01 (esc) a $ hg showcopies a -> j $ hg showcopies --config experimental.copies.read-from=compatibility a -> j $ hg showcopies --config experimental.copies.read-from=filelog-only a -> j The entries should be written to extras even if they're empty (so the client won't have to fall back to reading from filelogs) $ echo x >> j $ hg ci -m 'modify j' --config experimental.copies.write-to=compatibility $ hg changesetcopies files: j filesadded: filesremoved: p1copies: p2copies: Test writing only to filelog $ hg cp a k $ hg ci -m 'copy a to k' --config experimental.copies.write-to=filelog-only $ hg changesetcopies files: k $ hg debugdata k 0 \x01 (esc) copy: a copyrev: b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 \x01 (esc) a $ hg showcopies $ hg showcopies --config experimental.copies.read-from=compatibility a -> k $ hg showcopies --config experimental.copies.read-from=filelog-only a -> k $ cd .. Test rebasing a commit with copy information $ hg init rebase-rename $ cd rebase-rename $ echo a > a $ hg ci -Aqm 'add a' $ echo a2 > a $ hg ci -m 'modify a' $ hg co -q 0 $ hg mv a b $ hg ci -qm 'rename a to b' $ hg rebase -d 1 --config rebase.experimental.inmemory=yes rebasing 2:fc7287ac5b9b "rename a to b" (tip) merging a and b to b saved backup bundle to $TESTTMP/rebase-rename/.hg/strip-backup/fc7287ac5b9b-8f2a95ec-rebase.hg $ hg st --change . --copies A b a R a $ cd ..