Mercurial > hg
view tests/test-eol-clone.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 | f2719b387380 |
children | eb586ed5d8ce |
line wrap: on
line source
Testing cloning with the EOL extension $ cat >> $HGRCPATH <<EOF > [extensions] > eol = > > [eol] > native = CRLF > EOF setup repository $ hg init repo $ cd repo $ cat > .hgeol <<EOF > [patterns] > **.txt = native > EOF $ printf "first\r\nsecond\r\nthird\r\n" > a.txt $ hg commit --addremove -m 'checkin' adding .hgeol adding a.txt Clone $ cd .. $ hg clone repo repo-2 updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd repo-2 $ cat a.txt first\r (esc) second\r (esc) third\r (esc) $ hg cat a.txt first second third $ hg remove .hgeol $ hg commit -m 'remove eol' $ hg push --quiet $ cd .. Test clone of repo with .hgeol in working dir, but no .hgeol in tip $ hg clone repo repo-3 updating to branch default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd repo-3 $ cat a.txt first second third Test clone of revision with .hgeol $ cd .. $ hg clone -r 0 repo repo-4 adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd repo-4 $ cat .hgeol [patterns] **.txt = native $ cat a.txt first\r (esc) second\r (esc) third\r (esc) $ cd ..