upstream/mercurial-mirror Files · hgext/narrow/narrowtemplates.py

server: add an error feedback mechanism for when the daemon fails to launch...

server: add an error feedback mechanism for when the daemon fails to launch There's a recurring problem on Windows where `hg serve -d` will randomly fail to spawn a detached process. The reason for the failure is completely hidden, and it takes hours to get a single failure on my laptop. All this does is redirect stdout/stderr of the child to a file until the lock file is freed, and then the parent dumps it out if it fails to spawn. I chose to put the output into the lock file because that is always cleaned up. There's no way to report errors after that anyway. On Windows, killdaemons.py is roughly `kill -9`, so this ensures that junk won't pile up. This may end up being a case of EADDRINUSE. At least that's what I saw spit out a few times (among other odd errors and missing output on Windows). But I also managed to get the same thing on Fedora 26 by running test-hgwebdir.t with --loop -j10 for several hours. Running `netstat` immediately after killing that run printed a wall of sockets in the TIME_WAIT state, which were gone a couple seconds later. I couldn't match up ports that failed, because --loop doesn't print out the message about the port that was used. So maybe the fix is to rotate the use of HGPORT[12] in the tests. But, let's collect some more data first.

Yuya Nishihara - - Load All Authors

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      # narrowtemplates.py - added template keywords for narrow clones

      #

      # Copyright 2017 Google, Inc.

      #

      # This software may be used and distributed according to the terms of the

      # GNU General Public License version 2 or any later version.

      from __future__ import absolute_import

      from mercurial import (

          registrar,

          revlog,

      )

      keywords = {}

      templatekeyword = registrar.templatekeyword(keywords)

      revsetpredicate = registrar.revsetpredicate()

      def _isellipsis(repo, rev):

          if repo.changelog.flags(rev) & revlog.REVIDX_ELLIPSIS:

              return True

          return False

      @templatekeyword('ellipsis', requires={'repo', 'ctx'})

      def ellipsis(context, mapping):

          """String. 'ellipsis' if the change is an ellipsis node, else ''."""

          repo = context.resource(mapping, 'repo')

          ctx = context.resource(mapping, 'ctx')

          if _isellipsis(repo, ctx.rev()):

              return 'ellipsis'

          return ''

      @templatekeyword('outsidenarrow', requires={'repo', 'ctx'})

      def outsidenarrow(context, mapping):

          """String. 'outsidenarrow' if the change affects no tracked files,

          else ''."""

          repo = context.resource(mapping, 'repo')

          ctx = context.resource(mapping, 'ctx')

          m = repo.narrowmatch()

          if not m.always():

              if not any(m(f) for f in ctx.files()):

                  return 'outsidenarrow'

          return ''

      @revsetpredicate('ellipsis')

      def ellipsisrevset(repo, subset, x):

          """Changesets that are ellipsis nodes."""

          return subset.filter(lambda r: _isellipsis(repo, r))

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				# narrowtemplates.py - added template keywords for narrow clones
				#
				# Copyright 2017 Google, Inc.
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.

				from __future__ import absolute_import

				from mercurial import (
				registrar,
				revlog,
				)

				keywords = {}
				templatekeyword = registrar.templatekeyword(keywords)
				revsetpredicate = registrar.revsetpredicate()

				def _isellipsis(repo, rev):
				if repo.changelog.flags(rev) & revlog.REVIDX_ELLIPSIS:
				return True
				return False

				@templatekeyword('ellipsis', requires={'repo', 'ctx'})
				def ellipsis(context, mapping):
				"""String. 'ellipsis' if the change is an ellipsis node, else ''."""
				repo = context.resource(mapping, 'repo')
				ctx = context.resource(mapping, 'ctx')
				if _isellipsis(repo, ctx.rev()):
				return 'ellipsis'
				return ''

				@templatekeyword('outsidenarrow', requires={'repo', 'ctx'})
				def outsidenarrow(context, mapping):
				"""String. 'outsidenarrow' if the change affects no tracked files,
				else ''."""
				repo = context.resource(mapping, 'repo')
				ctx = context.resource(mapping, 'ctx')
				m = repo.narrowmatch()
				if not m.always():
				if not any(m(f) for f in ctx.files()):
				return 'outsidenarrow'
				return ''

				@revsetpredicate('ellipsis')
				def ellipsisrevset(repo, subset, x):
				"""Changesets that are ellipsis nodes."""
				return subset.filter(lambda r: _isellipsis(repo, r))