revlog: ensure intermediate snapshot have decreasing size
If the intermediate snapshot is bigger than the previous one, there is likely
a better snapshot to be made at a different level.
# dirstatenonnormalcheck.py - extension to check the consistency of the
# dirstate's non-normal map
#
# For most operations on dirstate, this extensions checks that the nonnormalset
# contains the right entries.
# It compares the nonnormal file to a nonnormalset built from the map of all
# the files in the dirstate to check that they contain the same files.
from __future__ import absolute_import
from mercurial import (
dirstate,
extensions,
)
def nonnormalentries(dmap):
"""Compute nonnormal entries from dirstate's dmap"""
res = set()
for f, e in dmap.iteritems():
if e[0] != b'n' or e[3] == -1:
res.add(f)
return res
def checkconsistency(ui, orig, dmap, _nonnormalset, label):
"""Compute nonnormalset from dmap, check that it matches _nonnormalset"""
nonnormalcomputedmap = nonnormalentries(dmap)
if _nonnormalset != nonnormalcomputedmap:
ui.develwarn(b"%s call to %s\n" % (label, orig), config=b'dirstate')
ui.develwarn(b"inconsistency in nonnormalset\n", config=b'dirstate')
ui.develwarn(b"[nonnormalset] %s\n" % _nonnormalset, config=b'dirstate')
ui.develwarn(b"[map] %s\n" % nonnormalcomputedmap, config=b'dirstate')
def _checkdirstate(orig, self, arg):
"""Check nonnormal set consistency before and after the call to orig"""
checkconsistency(self._ui, orig, self._map, self._map.nonnormalset,
b"before")
r = orig(self, arg)
checkconsistency(self._ui, orig, self._map, self._map.nonnormalset,
b"after")
return r
def extsetup(ui):
"""Wrap functions modifying dirstate to check nonnormalset consistency"""
dirstatecl = dirstate.dirstate
devel = ui.configbool(b'devel', b'all-warnings')
paranoid = ui.configbool(b'experimental', b'nonnormalparanoidcheck')
if devel:
extensions.wrapfunction(dirstatecl, '_writedirstate', _checkdirstate)
if paranoid:
# We don't do all these checks when paranoid is disable as it would
# make the extension run very slowly on large repos
extensions.wrapfunction(dirstatecl, 'normallookup', _checkdirstate)
extensions.wrapfunction(dirstatecl, 'otherparent', _checkdirstate)
extensions.wrapfunction(dirstatecl, 'normal', _checkdirstate)
extensions.wrapfunction(dirstatecl, 'write', _checkdirstate)
extensions.wrapfunction(dirstatecl, 'add', _checkdirstate)
extensions.wrapfunction(dirstatecl, 'remove', _checkdirstate)
extensions.wrapfunction(dirstatecl, 'merge', _checkdirstate)
extensions.wrapfunction(dirstatecl, 'drop', _checkdirstate)