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comparison mercurial/localrepo.py @ 48235:b4f83c9e7905

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dirstate-v2: Add support when Rust is not enabled This wires into `dirstatemap` the parser and serializer added in previous changesets. The memory representation is still the same, with a flat `dict` for `DirstateItem`s and another one for copy sources. Serialization always creates a new dirstate-v2 data file and does not support (when Rust is not enabled) appending to an existing one, since we don?t keep track of which tree nodes are new or modified. Instead the tree is reconstructed during serialization. Differential Revision: https://phab.mercurial-scm.org/D11520
author Simon Sapin <simon.sapin@octobus.net>
date Fri, 16 Jul 2021 18:42:20 +0200
parents 7970895a21cb
children 5c567aca080d
comparison
equal deleted inserted replaced
48234:7e78c72ee3ea 48235:b4f83c9e7905
915 def gathersupportedrequirements(ui): 915 def gathersupportedrequirements(ui):
916 """Determine the complete set of recognized requirements.""" 916 """Determine the complete set of recognized requirements."""
917 # Start with all requirements supported by this file. 917 # Start with all requirements supported by this file.
918 supported = set(localrepository._basesupported) 918 supported = set(localrepository._basesupported)
919 919
920 if dirstate.SUPPORTS_DIRSTATE_V2:
921 supported.add(requirementsmod.DIRSTATE_V2_REQUIREMENT)
922
923 # Execute ``featuresetupfuncs`` entries if they belong to an extension 920 # Execute ``featuresetupfuncs`` entries if they belong to an extension
924 # relevant to this ui instance. 921 # relevant to this ui instance.
925 modules = {m.__name__ for n, m in extensions.extensions(ui)} 922 modules = {m.__name__ for n, m in extensions.extensions(ui)}
926 923
927 for fn in featuresetupfuncs: 924 for fn in featuresetupfuncs:
1264 requirementsmod.CHANGELOGV2_REQUIREMENT, 1261 requirementsmod.CHANGELOGV2_REQUIREMENT,
1265 requirementsmod.SPARSEREVLOG_REQUIREMENT, 1262 requirementsmod.SPARSEREVLOG_REQUIREMENT,
1266 requirementsmod.NODEMAP_REQUIREMENT, 1263 requirementsmod.NODEMAP_REQUIREMENT,
1267 bookmarks.BOOKMARKS_IN_STORE_REQUIREMENT, 1264 bookmarks.BOOKMARKS_IN_STORE_REQUIREMENT,
1268 requirementsmod.SHARESAFE_REQUIREMENT, 1265 requirementsmod.SHARESAFE_REQUIREMENT,
1266 requirementsmod.DIRSTATE_V2_REQUIREMENT,
1269 } 1267 }
1270 _basesupported = supportedformats | { 1268 _basesupported = supportedformats | {
1271 requirementsmod.STORE_REQUIREMENT, 1269 requirementsmod.STORE_REQUIREMENT,
1272 requirementsmod.FNCACHE_REQUIREMENT, 1270 requirementsmod.FNCACHE_REQUIREMENT,
1273 requirementsmod.SHARED_REQUIREMENT, 1271 requirementsmod.SHARED_REQUIREMENT,
3607 requirements.add(requirementsmod.SPARSEREVLOG_REQUIREMENT) 3605 requirements.add(requirementsmod.SPARSEREVLOG_REQUIREMENT)
3608 3606
3609 # experimental config: format.exp-dirstate-v2 3607 # experimental config: format.exp-dirstate-v2
3610 # Keep this logic in sync with `has_dirstate_v2()` in `tests/hghave.py` 3608 # Keep this logic in sync with `has_dirstate_v2()` in `tests/hghave.py`
3611 if ui.configbool(b'format', b'exp-dirstate-v2'): 3609 if ui.configbool(b'format', b'exp-dirstate-v2'):
3612 if dirstate.SUPPORTS_DIRSTATE_V2: 3610 requirements.add(requirementsmod.DIRSTATE_V2_REQUIREMENT)
3613 requirements.add(requirementsmod.DIRSTATE_V2_REQUIREMENT)
3614 else:
3615 raise error.Abort(
3616 _(
3617 b"dirstate v2 format requested by config "
3618 b"but not supported (requires Rust extensions)"
3619 )
3620 )
3621 3611
3622 # experimental config: format.exp-use-copies-side-data-changeset 3612 # experimental config: format.exp-use-copies-side-data-changeset
3623 if ui.configbool(b'format', b'exp-use-copies-side-data-changeset'): 3613 if ui.configbool(b'format', b'exp-use-copies-side-data-changeset'):
3624 requirements.add(requirementsmod.CHANGELOGV2_REQUIREMENT) 3614 requirements.add(requirementsmod.CHANGELOGV2_REQUIREMENT)
3625 requirements.add(requirementsmod.COPIESSDC_REQUIREMENT) 3615 requirements.add(requirementsmod.COPIESSDC_REQUIREMENT)