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hgweb: profile HTTP requests...
hgweb: profile HTTP requests Currently, running `hg serve --profile` doesn't yield anything useful: when the process is terminated the profiling output displays results from the main thread, which typically spends most of its time in select.select(). Furthermore, it has no meaningful results from mercurial.* modules because the threads serving HTTP requests don't actually get profiled. This patch teaches the hgweb wsgi applications to profile individual requests. If profiling is enabled, the profiler kicks in after HTTP/WSGI environment processing but before Mercurial's main request processing. The profile results are printed to the configured profiling output. If running `hg serve` from a shell, they will be printed to stderr, just before the HTTP request line is logged. If profiling to a file, we only write a single profile to the file because the file is not opened in append mode. We could add support for appending to files in a future patch if someone wants it. Per request profiling doesn't work with the statprof profiler because internally that profiler collects samples from the thread that *initially* requested profiling be enabled. I have plans to address this by vendoring Facebook's customized statprof and then improving it.
liscju - - Load All Authors

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test-newbranch.t
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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)
[255]
$ 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)
[255]
$ 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)
[255]
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)
[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)
[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