upstream/mercurial-mirror Files · mercurial/utils/resourceutil.py

lock: pass "success" boolean to _afterlock callbacks...

lock: pass "success" boolean to _afterlock callbacks This lets the callback decide if it should actually run or not. I suspect that most callbacks (and hooks) *should not* run in this scenario, but I'm trying to not break any existing behavior. `persistmanifestcache`, however, seems actively dangerous to run: we just encountered an exception and the repo is in an unknown state (hopefully a consistent one due to transactions, but this is not 100% guaranteed), and the data we cache may be based on this unknown state. This was observed by our users since we wrap some of the functions that persistmanifestcache calls and it expects that the repo object is in a certain state that we'd set up earlier. If the user hits ctrl-c before we establish that state, we end up crashing there. I'm going to make that extension resilient to this issue, but figured it might be a common issue and should be handled here as well instead of just working around the issue. Differential Revision: https://phab.mercurial-scm.org/D7459

Martin von Zweigbergk - - Load All Authors

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      # resourceutil.py - utility for looking up resources

      #

      #  Copyright 2005 K. Thananchayan <thananck@yahoo.com>

      #  Copyright 2005-2007 Matt Mackall <mpm@selenic.com>

      #  Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>

      #

      # 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

      import imp

      import os

      import sys

      from .. import pycompat

      def mainfrozen():

          """return True if we are a frozen executable.

          The code supports py2exe (most common, Windows only) and tools/freeze

          (portable, not much used).

          """

          return (

              pycompat.safehasattr(sys, "frozen")

              or pycompat.safehasattr(sys, "importers")  # new py2exe

              or imp.is_frozen("__main__")  # old py2exe

          )  # tools/freeze

      # the location of data files matching the source code

      if mainfrozen() and getattr(sys, 'frozen', None) != 'macosx_app':

          # executable version (py2exe) doesn't support __file__

          datapath = os.path.dirname(pycompat.sysexecutable)

      else:

          datapath = os.path.dirname(os.path.dirname(pycompat.fsencode(__file__)))

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				# resourceutil.py - utility for looking up resources
				#
				# Copyright 2005 K. Thananchayan <thananck@yahoo.com>
				# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
				# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
				#
				# 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

				import imp
				import os
				import sys

				from .. import pycompat


				def mainfrozen():
				"""return True if we are a frozen executable.

				The code supports py2exe (most common, Windows only) and tools/freeze
				(portable, not much used).
				"""
				return (
				pycompat.safehasattr(sys, "frozen")
				or pycompat.safehasattr(sys, "importers") # new py2exe
				or imp.is_frozen("__main__") # old py2exe
				) # tools/freeze


				# the location of data files matching the source code
				if mainfrozen() and getattr(sys, 'frozen', None) != 'macosx_app':
				# executable version (py2exe) doesn't support __file__
				datapath = os.path.dirname(pycompat.sysexecutable)
				else:
				datapath = os.path.dirname(os.path.dirname(pycompat.fsencode(__file__)))