upstream/mercurial-mirror Files · mercurial/cacheutil.py

sparse: reliably avoid writing to store without a lock...

sparse: reliably avoid writing to store without a lock With the code as written before this patch we can still end up writing to store in `debugsparse`. Obviously we'll write to it if by accident a store requirement is modified, but more importantly we write to it if another concurrent transaction modifies the requirements file on disk. We can't rule this out since we're not holding the store lock, so it's better to explicitly pass a permission to write instead of inferring it based on file contents.

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      # scmutil.py - Mercurial core utility functions

      #

      #  Copyright Olivia Mackall <olivia@selenic.com> and other

      #

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

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

      from . import repoview

      def cachetocopy(srcrepo):

          """return the list of cache file valuable to copy during a clone"""

          # In local clones we're copying all nodes, not just served

          # ones. Therefore copy all branch caches over.

          cachefiles = [b'branch2']

          cachefiles += [b'branch2-%s' % f for f in repoview.filtertable]

          cachefiles += [b'branch3']

          cachefiles += [b'branch3-%s' % f for f in repoview.filtertable]

          cachefiles += [b'rbc-names-v1', b'rbc-revs-v1']

          cachefiles += [b'tags2']

          cachefiles += [b'tags2-%s' % f for f in repoview.filtertable]

          cachefiles += [b'hgtagsfnodes1']

          return cachefiles

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				# scmutil.py - Mercurial core utility functions
				#
				# Copyright Olivia Mackall <olivia@selenic.com> and other
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.

				from . import repoview


				def cachetocopy(srcrepo):
				"""return the list of cache file valuable to copy during a clone"""
				# In local clones we're copying all nodes, not just served
				# ones. Therefore copy all branch caches over.
				cachefiles = [b'branch2']
				cachefiles += [b'branch2-%s' % f for f in repoview.filtertable]
				cachefiles += [b'branch3']
				cachefiles += [b'branch3-%s' % f for f in repoview.filtertable]
				cachefiles += [b'rbc-names-v1', b'rbc-revs-v1']
				cachefiles += [b'tags2']
				cachefiles += [b'tags2-%s' % f for f in repoview.filtertable]
				cachefiles += [b'hgtagsfnodes1']
				return cachefiles