view tests/test-mac-packages.t @ 29787:80df04266a16

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.

#require test-repo slow osx osxpackaging

  $ . "$TESTDIR/helpers-testrepo.sh"

  $ OUTPUTDIR=`pwd`
  $ export OUTPUTDIR
  $ KEEPMPKG=yes
  $ export KEEPMPKG

  $ cd "$TESTDIR"/..
  $ rm -rf dist
  $ make osx > $OUTPUTDIR/build.log 2>&1
  $ cd $OUTPUTDIR
  $ ls -d *.pkg
  Mercurial-*-macosx10.*.pkg (glob)

  $ xar -xf Mercurial*.pkg

Gather list of all installed files:
  $ lsbom mercurial.pkg/Bom > boms.txt

Spot-check some randomly selected files:
  $ grep bdiff boms.txt | cut -d '	' -f 1,2,3
  ./Library/Python/2.7/site-packages/mercurial/bdiff.so	100755	0/0
  ./Library/Python/2.7/site-packages/mercurial/pure/bdiff.py	100644	0/0
  ./Library/Python/2.7/site-packages/mercurial/pure/bdiff.pyc	100644	0/0
  ./Library/Python/2.7/site-packages/mercurial/pure/bdiff.pyo	100644	0/0
  $ egrep 'man[15]' boms.txt | cut -d '	' -f 1,2,3
  ./usr/local/share/man/man1	40755	0/0
  ./usr/local/share/man/man1/hg.1	100644	0/0
  ./usr/local/share/man/man5	40755	0/0
  ./usr/local/share/man/man5/hgignore.5	100644	0/0
  ./usr/local/share/man/man5/hgrc.5	100644	0/0
  $ grep bser boms.txt | cut -d '	' -f 1,2,3
  ./Library/Python/2.7/site-packages/hgext/fsmonitor/pywatchman/bser.so	100755	0/0
  ./Library/Python/2.7/site-packages/hgext/fsmonitor/pywatchman/pybser.py	100644	0/0
  ./Library/Python/2.7/site-packages/hgext/fsmonitor/pywatchman/pybser.pyc	100644	0/0
  ./Library/Python/2.7/site-packages/hgext/fsmonitor/pywatchman/pybser.pyo	100644	0/0
  $ grep localrepo boms.txt | cut -d '	' -f 1,2,3
  ./Library/Python/2.7/site-packages/mercurial/localrepo.py	100644	0/0
  ./Library/Python/2.7/site-packages/mercurial/localrepo.pyc	100644	0/0
  ./Library/Python/2.7/site-packages/mercurial/localrepo.pyo	100644	0/0
  $ grep '/hg	' boms.txt | cut -d '	' -f 1,2,3
  ./usr/local/bin/hg	100755	0/0

Make sure the built binary uses the system Python interpreter
  $ bsdtar xf mercurial.pkg/Payload usr/local/bin
Use a glob to find this to avoid check-code whining about a fixed path.
  $ head -n 1 usr/local/b?n/hg
  #!/System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python

Note that we're not currently installing any /etc/mercurial stuff,
including merge-tool configurations.