Mercurial > hg
view tests/test-unionrepo.t @ 32783:4483696dacee
profile: upgrade the "profile" context manager to a full class
So far we have been able to use a simple decorator for this. However using the
current context manager makes the scope of the profiling in dispatch
constrainted and the time frame to decide to enable profiling quite limited
(using "maybeprofile")
This is the first step toward the ability to enable the profiling from within
the profiling scope. eg::
with maybeprofiling(ui) as profiler:
...
bar.foo():
...
if options['profile']:
profiler.start()
...
fooz()
...
My target usecase is adding support for "--profile" to alias definitions with
effect. These are to be used with "profiling.output=blackbox" to gather data
about operation that get slow from time to time (eg: pull being minutes instead
of seconds from time to time).
Of course, in such case, the scope of the profiling would be smaller since
profiler would be started after running extensions 'reposetup' (and other
potentially costly logic), but these are not relevant for my target usecase
(multiple second commits, multiple tens of seconds pull).
Currently adding '--profile' to a command through alias requires to re-spin a
Mercurial binary (using "!$HG" in alias), which as a significant performance
impact, especially in context where startup performance is being worked on...
An alternative approach would be to stop using the context manager in dispatch
and move back to a try/finally setup.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Thu, 08 Jun 2017 01:38:48 +0100 |
parents | bf86e3e87123 |
children | eb586ed5d8ce |
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Test unionrepo functionality Create one repository $ hg init repo1 $ cd repo1 $ touch repo1-0 $ echo repo1-0 > f $ hg ci -Aqmrepo1-0 $ touch repo1-1 $ echo repo1-1 >> f $ hg ci -Aqmrepo1-1 $ touch repo1-2 $ echo repo1-2 >> f $ hg ci -Aqmrepo1-2 $ hg log --template '{rev}:{node|short} {desc|firstline}\n' 2:68c0685446a3 repo1-2 1:8a58db72e69d repo1-1 0:f093fec0529b repo1-0 $ tip1=`hg id -q` $ cd .. - and a clone with a not-completely-trivial history $ hg clone -q repo1 --rev 0 repo2 $ cd repo2 $ touch repo2-1 $ sed '1i\ > repo2-1 at top > ' f > f.tmp $ mv f.tmp f $ hg ci -Aqmrepo2-1 $ touch repo2-2 $ hg pull -q ../repo1 -r 1 $ hg merge -q $ hg ci -Aqmrepo2-2-merge $ touch repo2-3 $ echo repo2-3 >> f $ hg ci -mrepo2-3 $ hg log --template '{rev}:{node|short} {desc|firstline}\n' 4:2f0d178c469c repo2-3 3:9e6fb3e0b9da repo2-2-merge 2:8a58db72e69d repo1-1 1:c337dba826e7 repo2-1 0:f093fec0529b repo1-0 $ cd .. revisions from repo2 appear as appended / pulled to repo1 $ hg -R union:repo1+repo2 log --template '{rev}:{node|short} {desc|firstline}\n' 5:2f0d178c469c repo2-3 4:9e6fb3e0b9da repo2-2-merge 3:c337dba826e7 repo2-1 2:68c0685446a3 repo1-2 1:8a58db72e69d repo1-1 0:f093fec0529b repo1-0 manifest can be retrieved for revisions in both repos $ hg -R union:repo1+repo2 mani -r $tip1 f repo1-0 repo1-1 repo1-2 $ hg -R union:repo1+repo2 mani -r 4 f repo1-0 repo1-1 repo2-1 repo2-2 files can be retrieved form both repos $ hg -R repo1 cat repo1/f -r2 repo1-0 repo1-1 repo1-2 $ hg -R union:repo1+repo2 cat -r$tip1 repo1/f repo1-0 repo1-1 repo1-2 $ hg -R union:repo1+repo2 cat -r4 $TESTTMP/repo1/f repo2-1 at top repo1-0 repo1-1 files can be compared across repos $ hg -R union:repo1+repo2 diff -r$tip1 -rtip diff -r 68c0685446a3 -r 2f0d178c469c f --- a/f Thu Jan 01 00:00:00 1970 +0000 +++ b/f Thu Jan 01 00:00:00 1970 +0000 @@ -1,3 +1,4 @@ +repo2-1 at top repo1-0 repo1-1 -repo1-2 +repo2-3 heads from both repos are found correctly $ hg -R union:repo1+repo2 heads --template '{rev}:{node|short} {desc|firstline}\n' 5:2f0d178c469c repo2-3 2:68c0685446a3 repo1-2 revsets works across repos $ hg -R union:repo1+repo2 id -r "ancestor($tip1, 5)" 8a58db72e69d annotate works - an indication that linkrevs works $ hg --cwd repo1 -Runion:../repo2 annotate $TESTTMP/repo1/f -r tip 3: repo2-1 at top 0: repo1-0 1: repo1-1 5: repo2-3 union repos can be cloned ... and clones works correctly $ hg clone -U union:repo1+repo2 repo3 requesting all changes adding changesets adding manifests adding file changes added 6 changesets with 11 changes to 6 files (+1 heads) $ hg -R repo3 paths default = union:repo1+repo2 $ hg -R repo3 verify checking changesets checking manifests crosschecking files in changesets and manifests checking files 6 files, 6 changesets, 11 total revisions $ hg -R repo3 heads --template '{rev}:{node|short} {desc|firstline}\n' 5:2f0d178c469c repo2-3 2:68c0685446a3 repo1-2 $ hg -R repo3 log --template '{rev}:{node|short} {desc|firstline}\n' 5:2f0d178c469c repo2-3 4:9e6fb3e0b9da repo2-2-merge 3:c337dba826e7 repo2-1 2:68c0685446a3 repo1-2 1:8a58db72e69d repo1-1 0:f093fec0529b repo1-0 union repos should use the correct rev number (issue5024) $ hg init a $ cd a $ echo a0 >> f $ hg ci -Aqm a0 $ cd .. $ hg init b $ cd b $ echo b0 >> f $ hg ci -Aqm b0 $ echo b1 >> f $ hg ci -qm b1 $ cd .. "hg files -v" to call fctx.size() -> fctx.iscensored() $ hg files -R union:b+a -r2 -v 3 b/f (glob)