Mercurial > hg
view tests/test-newbranch.t @ 49790:f463eb675e85 stable
emitrevision: consider ancestors revision to emit as available base
This should make more delta base valid. This notably affects:
* case where we skipped some parent with empty delta to directly delta against
an ancestors
* case where an intermediate snapshots is stored.
This change means we could sent largish intermediate snapshots over the wire.
However this is actually a sub goal here. Sending snapshots over the wire means
the client have a high odd of simply storing the pre-computed delta instead of
doing a lengthy process that will… end up doing the same intermediate snapshot.
In addition the overall size of snapshot (or any level) is "only" some or the
overall delta size. (0.17% for my mercurial clone, 20% for my clone of Mozilla
try). So Sending them other the wire is unlikely to change large impact on the
bandwidth used.
If we decide that minimising the bandwidth is an explicit goal, we should
introduce new logic to filter-out snapshot as delta. The current code has no
notion explicite of snapshot so far, they just tended to fall into the wobbly
filtering options.
In some cases, this patch can yield large improvement to the bundling time:
### data-env-vars.name = mozilla-try-2019-02-18-zstd-sparse-revlog
# benchmark.name = perf-bundle
# benchmark.variants.revs = last-100000
before: 68.787066 seconds
after: 47.552677 seconds (-30.87%)
That translate to large improvement to the pull time :
### data-env-vars.name = mozilla-try-2019-02-18-zstd-sparse-revlog
# benchmark.name = pull
# benchmark.variants.issue6528 = disabled
# benchmark.variants.revs = last-100000
before: 142.186625 seconds
after: 75.897745 seconds (-46.62%)
No significant negative impact have been observed.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Sat, 12 Nov 2022 00:18:41 +0100 |
parents | 8d72e29ad1e0 |
children |
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$ branchcache=.hg/cache/branch2 $ listbranchcaches() { > for f in .hg/cache/branch2*; > do echo === $f ===; > cat $f; > done; > } $ purgebranchcaches() { > rm .hg/cache/branch2* > } $ hg init t $ cd t $ hg branches $ echo foo > a $ hg add a $ hg ci -m "initial" $ hg branch foo marked working directory as branch foo (branches are permanent and global, did you want a bookmark?) $ hg branch foo $ hg ci -m "add branch name" $ hg branch bar marked working directory as branch bar $ hg ci -m "change branch name" Branch shadowing: $ hg branch default abort: a branch of the same name already exists (use 'hg update' to switch to it) [10] $ hg branch -f default marked working directory as branch default $ hg ci -m "clear branch name" created new head There should be only one default branch head $ hg heads . changeset: 3:1c28f494dae6 tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: clear branch name Merging and branches $ hg co foo 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg branch foo set existing branch name fails unless force - setting existing parent branch works without force: $ hg branch bar abort: a branch of the same name already exists (use 'hg update' to switch to it) [10] $ hg branch -f bar marked working directory as branch bar $ hg branch foo marked working directory as branch foo $ echo bleah > a $ hg ci -m "modify a branch" $ hg merge default 0 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg branch foo set existing branch name where branch head is ancestor: $ hg branch bar abort: a branch of the same name already exists (use 'hg update' to switch to it) [10] set (other) parent branch as branch name $ hg branch default marked working directory as branch default set (first) parent branch as branch name $ hg branch foo marked working directory as branch foo $ hg ci -m "merge" $ hg log -G -T '{rev}:{node|short} {branch} {desc}\n' @ 5:530046499edf foo merge |\ | o 4:adf1a74a7f7b foo modify a branch | | o | 3:1c28f494dae6 default clear branch name | | o | 2:c21617b13b22 bar change branch name |/ o 1:6c0e42da283a foo add branch name | o 0:db01e8ea3388 default initial $ hg branches foo 5:530046499edf default 3:1c28f494dae6 (inactive) bar 2:c21617b13b22 (inactive) $ hg branches -q foo default bar Test for invalid branch cache: $ hg rollback repository tip rolled back to revision 4 (undo commit) working directory now based on revisions 4 and 3 $ cp ${branchcache}-served .hg/bc-invalid $ hg log -r foo changeset: 4:adf1a74a7f7b branch: foo tag: tip parent: 1:6c0e42da283a user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: modify a branch $ cp .hg/bc-invalid $branchcache $ hg --debug log -r foo changeset: 4:adf1a74a7f7b4cd193d12992f5d0d6a004ed21d6 branch: foo tag: tip phase: draft parent: 1:6c0e42da283a56b5edc5b4fadb491365ec7f5fa8 parent: -1:0000000000000000000000000000000000000000 manifest: 1:8c342a37dfba0b3d3ce073562a00d8a813c54ffe user: test date: Thu Jan 01 00:00:00 1970 +0000 files: a extra: branch=foo description: modify a branch $ purgebranchcaches $ echo corrupted > $branchcache $ hg log -qr foo 4:adf1a74a7f7b $ listbranchcaches === .hg/cache/branch2 === corrupted === .hg/cache/branch2-served === adf1a74a7f7b4cd193d12992f5d0d6a004ed21d6 4 c21617b13b220988e7a2e26290fbe4325ffa7139 o bar 1c28f494dae69a2f8fc815059d257eccf3fcfe75 o default adf1a74a7f7b4cd193d12992f5d0d6a004ed21d6 o foo Push should update the branch cache: $ hg init ../target Pushing just rev 0: $ hg push -qr 0 ../target $ (cd ../target/; listbranchcaches) === .hg/cache/branch2-base === db01e8ea3388fd3c7c94e1436ea2bd6a53d581c5 0 db01e8ea3388fd3c7c94e1436ea2bd6a53d581c5 o default Pushing everything: $ hg push -qf ../target $ (cd ../target/; listbranchcaches) === .hg/cache/branch2-base === adf1a74a7f7b4cd193d12992f5d0d6a004ed21d6 4 c21617b13b220988e7a2e26290fbe4325ffa7139 o bar 1c28f494dae69a2f8fc815059d257eccf3fcfe75 o default adf1a74a7f7b4cd193d12992f5d0d6a004ed21d6 o foo Update with no arguments: tipmost revision of the current branch: $ hg up -q -C 0 $ hg up -q $ hg id 1c28f494dae6 $ hg up -q 1 $ hg up -q $ hg id adf1a74a7f7b (foo) tip $ hg branch foobar marked working directory as branch foobar $ hg up 0 files updated, 0 files merged, 0 files removed, 0 files unresolved Fast-forward merge: $ hg branch ff marked working directory as branch ff $ echo ff > ff $ hg ci -Am'fast forward' adding ff $ hg up foo 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg merge ff 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg branch foo $ hg commit -m'Merge ff into foo' $ hg parents changeset: 6:185ffbfefa30 branch: foo tag: tip parent: 4:adf1a74a7f7b parent: 5:1a3c27dc5e11 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: Merge ff into foo $ hg manifest a ff Test merging, add 3 default heads and one test head: $ cd .. $ hg init merges $ cd merges $ echo a > a $ hg ci -Ama adding a $ echo b > b $ hg ci -Amb adding b $ hg up 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo c > c $ hg ci -Amc adding c created new head $ hg up 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo d > d $ hg ci -Amd adding d created new head $ hg up 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg branch test marked working directory as branch test (branches are permanent and global, did you want a bookmark?) $ echo e >> e $ hg ci -Ame adding e $ hg log changeset: 4:3a1e01ed1df4 branch: test tag: tip parent: 0:cb9a9f314b8b user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: e changeset: 3:980f7dc84c29 parent: 0:cb9a9f314b8b user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: d changeset: 2:d36c0562f908 parent: 0:cb9a9f314b8b user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: c changeset: 1:d2ae7f538514 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: b changeset: 0:cb9a9f314b8b user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: a Implicit merge with test branch as parent: $ hg merge abort: branch 'test' has one head - please merge with an explicit rev (run 'hg heads' to see all heads, specify rev with -r) [255] $ hg up -C default 1 files updated, 0 files merged, 1 files removed, 0 files unresolved Implicit merge with default branch as parent: $ hg merge abort: branch 'default' has 3 heads - please merge with an explicit rev (run 'hg heads .' to see heads, specify rev with -r) [255] 3 branch heads, explicit merge required: $ hg merge 2 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg ci -m merge 2 branch heads, implicit merge works: $ hg merge 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ cd .. We expect that bare update on new branch, updates to parent $ hg init bareupdateonnewbranch $ cd bareupdateonnewbranch $ hg update 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ touch a $ hg commit -A -m "a" adding a $ touch b $ hg commit -A -m "b" adding b $ touch c $ hg commit -A -m "c" adding c $ hg update -r 1 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg log -G o changeset: 2:991a3460af53 | tag: tip | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: c | @ changeset: 1:0e067c57feba | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: b | o changeset: 0:3903775176ed user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: a $ hg branch dev marked working directory as branch dev (branches are permanent and global, did you want a bookmark?) $ hg update 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg summary parent: 1:0e067c57feba b branch: dev commit: (new branch) update: (current) phases: 3 draft $ cd .. We need special handling for repositories with no "default" branch because "null" revision belongs to non-existent "default" branch. $ hg init nodefault $ cd nodefault $ hg branch -q foo $ touch 0 $ hg ci -Aqm0 $ touch 1 $ hg ci -Aqm1 $ hg update -qr0 $ hg branch -q bar $ touch 2 $ hg ci -Aqm2 $ hg update -qr0 $ hg branch -q baz $ touch 3 $ hg ci -Aqm3 $ hg ci --close-branch -m 'close baz' $ hg update -q null $ hg log -GT'{rev} {branch}\n' _ 4 baz | o 3 baz | | o 2 bar |/ | o 1 foo |/ o 0 foo a) updating from "null" should bring us to the tip-most branch head as there is no "default" branch: $ hg update -q null $ hg id -bn -1 default $ hg update 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg id -bn 2 bar b) but if we are at uncommitted "default" branch, we should stick to the current revision: $ hg update -q 0 $ hg branch default marked working directory as branch default $ hg id -bn 0 default $ hg update 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg id -bn 0 default c) also, if we have uncommitted branch at "null", we should stick to it: $ hg update -q null $ hg branch new marked working directory as branch new $ hg id -bn -1 new $ hg update 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg id -bn -1 new $ cd .. We expect that update --clean discard changes in working directory, and updates to the head of parent branch. $ hg init updatebareclean $ cd updatebareclean $ hg update --clean 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ touch a $ hg commit -A -m "a" adding a $ touch b $ hg commit -A -m "b" adding b $ touch c $ hg commit -A -m "c" adding c $ hg log changeset: 2:991a3460af53 tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: c changeset: 1:0e067c57feba user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: b changeset: 0:3903775176ed user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: a $ hg update -r 1 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg branch new-branch marked working directory as branch new-branch (branches are permanent and global, did you want a bookmark?) $ echo "aa" >> a $ hg update --clean 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg status $ hg branch default $ hg parent changeset: 2:991a3460af53 tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: c We expect that update --clean on non existing parent discards a new branch and updates to the tipmost non-closed branch head $ hg update null 0 files updated, 0 files merged, 3 files removed, 0 files unresolved $ hg branch newbranch marked working directory as branch newbranch (branches are permanent and global, did you want a bookmark?) $ hg update -C 3 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg summary parent: 2:991a3460af53 tip c branch: default commit: (clean) update: (current) phases: 3 draft