upstream/mercurial-mirror Files · hgext/remotefilelog/constants.py

rust-dirstate-v2: don't write dirstate if data file has changed...

rust-dirstate-v2: don't write dirstate if data file has changed This fixes the following race: - process A reads the dirstate - process B reads and writes the dirstate - process A writes the dirstate This either resulted in losing what process B had just written or a crash because the `uuid` had changed and we were trying to write to a file that doesn't exist. More explanations inside. This doesn't fix the issue for dirstate-v1, a later patch addresses it.

Gregory Szorc - - Load All Authors

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                r51139:07d030b3

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             constants.py
        
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      import struct

      from mercurial.i18n import _

      NETWORK_CAP_LEGACY_SSH_GETFILES = b'exp-remotefilelog-ssh-getfiles-1'

      SHALLOWREPO_REQUIREMENT = b"exp-remotefilelog-repo-req-1"

      BUNDLE2_CAPABLITY = b"exp-remotefilelog-b2cap-1"

      FILENAMESTRUCT = b'!H'

      FILENAMESIZE = struct.calcsize(FILENAMESTRUCT)

      NODESIZE = 20

      PACKREQUESTCOUNTSTRUCT = b'!I'

      NODECOUNTSTRUCT = b'!I'

      NODECOUNTSIZE = struct.calcsize(NODECOUNTSTRUCT)

      PATHCOUNTSTRUCT = b'!I'

      PATHCOUNTSIZE = struct.calcsize(PATHCOUNTSTRUCT)

      FILEPACK_CATEGORY = b""

      TREEPACK_CATEGORY = b"manifests"

      ALL_CATEGORIES = [FILEPACK_CATEGORY, TREEPACK_CATEGORY]

      # revision metadata keys. must be a single character.

      METAKEYFLAG = b'f'  # revlog flag

      METAKEYSIZE = b's'  # full rawtext size

      def getunits(category):

          if category == FILEPACK_CATEGORY:

              return _(b"files")

          if category == TREEPACK_CATEGORY:

              return _(b"trees")

      # Repack options passed to ``markledger``.

      OPTION_PACKSONLY = b'packsonly'

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				import struct

				from mercurial.i18n import _

				NETWORK_CAP_LEGACY_SSH_GETFILES = b'exp-remotefilelog-ssh-getfiles-1'

				SHALLOWREPO_REQUIREMENT = b"exp-remotefilelog-repo-req-1"

				BUNDLE2_CAPABLITY = b"exp-remotefilelog-b2cap-1"

				FILENAMESTRUCT = b'!H'
				FILENAMESIZE = struct.calcsize(FILENAMESTRUCT)

				NODESIZE = 20
				PACKREQUESTCOUNTSTRUCT = b'!I'

				NODECOUNTSTRUCT = b'!I'
				NODECOUNTSIZE = struct.calcsize(NODECOUNTSTRUCT)

				PATHCOUNTSTRUCT = b'!I'
				PATHCOUNTSIZE = struct.calcsize(PATHCOUNTSTRUCT)

				FILEPACK_CATEGORY = b""
				TREEPACK_CATEGORY = b"manifests"

				ALL_CATEGORIES = [FILEPACK_CATEGORY, TREEPACK_CATEGORY]

				# revision metadata keys. must be a single character.
				METAKEYFLAG = b'f' # revlog flag
				METAKEYSIZE = b's' # full rawtext size


				def getunits(category):
				if category == FILEPACK_CATEGORY:
				return _(b"files")
				if category == TREEPACK_CATEGORY:
				return _(b"trees")


				# Repack options passed to ``markledger``.
				OPTION_PACKSONLY = b'packsonly'