def acquire(self, spike: Spike, act: IActivation):
result = False
# update causal group set to account for merges
self._allowed_causal_groups = set(
cg for cg in self._allowed_causal_groups)
for si in self._signals:
if spike.causal_group() in self._allowed_causal_groups:
# the causal group is already allowed
result |= si.acquire(spike, act)
elif not si.completed_by:
if si.acquire(spike, act):
# add causal group to allowed, since the spike is a root cause
self._allowed_causal_groups.add(spike.causal_group())
result = True
return result
def acquire(self, spike: Spike, act: IActivation):
if not self.spike and self.name == spike.name() and (
self.max_age < 0
or spike.age() <= act.secs_to_ticks(self.max_age)):
assert not spike.is_wiped()
self._min_age_ticks = act.secs_to_ticks(self.min_age)
self.spike = spike
with spike.causal_group() as cg:
cg.acquired(spike, act, self.detached)
return True
return False
def acquire(self, spike: Spike, act: IActivation):
if not self.spike and self.id() == spike.id() and (
self.max_age_value < 0
or spike.age() <= act.secs_to_ticks(self.max_age_value)):
assert not spike.is_wiped()
with spike.causal_group() as cg:
# Causal group might refuse acquisition, if one of act's state's write-props is unavailable.
if not cg.acquired(spike, act, self.detached_value):
return False
self.spike = spike
self._min_age_ticks = act.secs_to_ticks(self.min_age_value)
return True
return False