def _read(self):
self._map = {}
self._copymap = {}
try:
fp = self._opendirstatefile()
try:
st = fp.read()
finally:
fp.close()
except IOError as err:
if err.errno != errno.ENOENT:
raise
return
if not st:
return
if util.safehasattr(parsers, 'dict_new_presized'):
# Make an estimate of the number of files in the dirstate based on
# its size. From a linear regression on a set of real-world repos,
# all over 10,000 files, the size of a dirstate entry is 85
# bytes. The cost of resizing is significantly higher than the cost
# of filling in a larger presized dict, so subtract 20% from the
# size.
#
# This heuristic is imperfect in many ways, so in a future dirstate
# format update it makes sense to just record the number of entries
# on write.
self._map = parsers.dict_new_presized(len(st) / 71)
# Python's garbage collector triggers a GC each time a certain number
# of container objects (the number being defined by
# gc.get_threshold()) are allocated. parse_dirstate creates a tuple
# for each file in the dirstate. The C version then immediately marks
# them as not to be tracked by the collector. However, this has no
# effect on when GCs are triggered, only on what objects the GC looks
# into. This means that O(number of files) GCs are unavoidable.
# Depending on when in the process's lifetime the dirstate is parsed,
# this can get very expensive. As a workaround, disable GC while
# parsing the dirstate.
#
# (we cannot decorate the function directly since it is in a C module)
parse_dirstate = util.nogc(parsers.parse_dirstate)
p = parse_dirstate(self._map, self._copymap, st)
if not self._dirtypl:
self._pl = p
def _read(self):
self._map = {}
self._copymap = {}
try:
fp = self._opener.open(self._filename)
try:
st = fp.read()
finally:
fp.close()
except IOError as err:
if err.errno != errno.ENOENT:
raise
return
if not st:
return
if util.safehasattr(parsers, 'dict_new_presized'):
# Make an estimate of the number of files in the dirstate based on
# its size. From a linear regression on a set of real-world repos,
# all over 10,000 files, the size of a dirstate entry is 85
# bytes. The cost of resizing is significantly higher than the cost
# of filling in a larger presized dict, so subtract 20% from the
# size.
#
# This heuristic is imperfect in many ways, so in a future dirstate
# format update it makes sense to just record the number of entries
# on write.
self._map = parsers.dict_new_presized(len(st) / 71)
# Python's garbage collector triggers a GC each time a certain number
# of container objects (the number being defined by
# gc.get_threshold()) are allocated. parse_dirstate creates a tuple
# for each file in the dirstate. The C version then immediately marks
# them as not to be tracked by the collector. However, this has no
# effect on when GCs are triggered, only on what objects the GC looks
# into. This means that O(number of files) GCs are unavoidable.
# Depending on when in the process's lifetime the dirstate is parsed,
# this can get very expensive. As a workaround, disable GC while
# parsing the dirstate.
#
# (we cannot decorate the function directly since it is in a C module)
parse_dirstate = util.nogc(parsers.parse_dirstate)
p = parse_dirstate(self._map, self._copymap, st)
if not self._dirtypl:
self._pl = p
if not st:
return
# Python's garbage collector triggers a GC each time a certain number
# of container objects (the number being defined by
# gc.get_threshold()) are allocated. parse_dirstate creates a tuple
# for each file in the dirstate. The C version then immediately marks
# them as not to be tracked by the collector. However, this has no
# effect on when GCs are triggered, only on what objects the GC looks
# into. This means that O(number of files) GCs are unavoidable.
# Depending on when in the process's lifetime the dirstate is parsed,
# this can get very expensive. As a workaround, disable GC while
# parsing the dirstate.
#
# (we cannot decorate the function directly since it is in a C module)
parse_dirstate = util.nogc(parsers.parse_dirstate)
p = parse_dirstate(self._map, self._copymap, st)
if not self._dirtypl:
self._pl = p
def invalidate(self):
for a in ("_map", "_copymap", "_foldmap", "_branch", "_pl", "_dirs",
"_ignore"):
if a in self.__dict__:
delattr(self, a)
self._lastnormaltime = 0
self._dirty = False
self._parentwriters = 0
def copy(self, source, dest):
"""Mark dest as a copy of source. Unmark dest if source is None."""
if not st:
return
# Python's garbage collector triggers a GC each time a certain number
# of container objects (the number being defined by
# gc.get_threshold()) are allocated. parse_dirstate creates a tuple
# for each file in the dirstate. The C version then immediately marks
# them as not to be tracked by the collector. However, this has no
# effect on when GCs are triggered, only on what objects the GC looks
# into. This means that O(number of files) GCs are unavoidable.
# Depending on when in the process's lifetime the dirstate is parsed,
# this can get very expensive. As a workaround, disable GC while
# parsing the dirstate.
#
# (we cannot decorate the function directly since it is in a C module)
parse_dirstate = util.nogc(parsers.parse_dirstate)
p = parse_dirstate(self._map, self._copymap, st)
if not self._dirtypl:
self._pl = p
def invalidate(self):
for a in ("_map", "_copymap", "_filefoldmap", "_dirfoldmap", "_branch",
"_pl", "_dirs", "_ignore"):
if a in self.__dict__:
delattr(self, a)
self._lastnormaltime = 0
self._dirty = False
self._parentwriters = 0
def copy(self, source, dest):
"""Mark dest as a copy of source. Unmark dest if source is None."""
