upstream/mercurial-mirror Files · contrib/debugshell.py

revlog: add a small cache of unfiltered chunk...

revlog: add a small cache of unfiltered chunk This can provides a massive boost to the reading of multiple revision and the computation of a valid delta chain. This greatly help operation like `hg log --patch`, delta computation (helping pull/unbundle), linkrev adjustment (helping copy tracing). A first round of benchmark for `hg log --patch --limit 1000` shows improvement in the 10-20% range on "small" repository like pypy or mercurial and large improvements (about 33%) for more complex ones like netbeans and mozilla's. These speeds up are consistent with the improvement to `hg pull` (from a server sending poor deltas) I saw benchmarking this last year. Further benchmark will be run during the freeze. I added some configuration in the experimental space to be able to further test the effect of various tuning for now. This feature should fit well in the "usage/resource profile" configuration that we should land next cycle. When it does not provides a benefit the overhead of the cache seem to be around 2%, a small price for the big improvement. In addition I believe we could shave most of this overhead with a more efficent lru implementation.

Gregory Szorc - - Load All Authors

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      # debugshell extension

      """a python shell with repo, changelog & manifest objects"""

      import code

      import mercurial

      import sys

      from mercurial import (

          demandimport,

          pycompat,

          registrar,

      )

      cmdtable = {}

      command = registrar.command(cmdtable)

      def pdb(ui, repo, msg, **opts):

          objects = {

              'mercurial': mercurial,

              'repo': repo,

              'cl': repo.changelog,

              'mf': repo.manifestlog,

          }

          code.interact(msg, local=objects)

      def ipdb(ui, repo, msg, **opts):

          import IPython

          cl = repo.changelog

          mf = repo.manifestlog

          cl, mf  # use variables to appease pyflakes

          IPython.embed()

      @command(b'debugshell|dbsh', [])

      def debugshell(ui, repo, **opts):

          bannermsg = "loaded repo : %s\n" "using source: %s" % (

              pycompat.sysstr(repo.root),

              mercurial.__path__[0],

          )

          pdbmap = {'pdb': 'code', 'ipdb': 'IPython'}

          debugger = ui.config(b"ui", b"debugger")

          if not debugger:

              debugger = 'pdb'

          else:

              debugger = pycompat.sysstr(debugger)

          # if IPython doesn't exist, fallback to code.interact

          try:

              with demandimport.deactivated():

                  __import__(pdbmap[debugger])

          except ImportError:

              ui.warnnoi18n(

                  b"%s debugger specified but %s module was not found\n"

                  % (debugger, pdbmap[debugger])

              )

              debugger = b'pdb'

          getattr(sys.modules[__name__], debugger)(ui, repo, bannermsg, **opts)

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

				# debugshell extension
				"""a python shell with repo, changelog & manifest objects"""

				import code
				import mercurial
				import sys
				from mercurial import (
				demandimport,
				pycompat,
				registrar,
				)

				cmdtable = {}
				command = registrar.command(cmdtable)


				def pdb(ui, repo, msg, **opts):
				objects = {
				'mercurial': mercurial,
				'repo': repo,
				'cl': repo.changelog,
				'mf': repo.manifestlog,
				}

				code.interact(msg, local=objects)


				def ipdb(ui, repo, msg, **opts):
				import IPython

				cl = repo.changelog
				mf = repo.manifestlog
				cl, mf # use variables to appease pyflakes

				IPython.embed()


				@command(b'debugshell\|dbsh', [])
				def debugshell(ui, repo, **opts):
				bannermsg = "loaded repo : %s\n" "using source: %s" % (
				pycompat.sysstr(repo.root),
				mercurial.__path__[0],
				)

				pdbmap = {'pdb': 'code', 'ipdb': 'IPython'}

				debugger = ui.config(b"ui", b"debugger")
				if not debugger:
				debugger = 'pdb'
				else:
				debugger = pycompat.sysstr(debugger)

				# if IPython doesn't exist, fallback to code.interact
				try:
				with demandimport.deactivated():
				__import__(pdbmap[debugger])
				except ImportError:
				ui.warnnoi18n(
				b"%s debugger specified but %s module was not found\n"
				% (debugger, pdbmap[debugger])
				)
				debugger = b'pdb'

				getattr(sys.modules[__name__], debugger)(ui, repo, bannermsg, **opts)