def push(self, value: self.ValueType, flags: int = 0):
"""
Push an element onto the map.
"""
try:
value = self.ValueType(value)
except TypeError:
pass
ret = Lib.bpf_map_update_elem(self._map_fd, None, ct.byref(value),
flags)
if ret < 0:
raise KeyError(f'Unable to push value: {cerr(ret)}')
def update(self, key: self.KeyType, value: self.ValueType, flags: int):
"""
Update a map value, operating according to specified flags.
This provides more control than the traditional map[key] = value method.
"""
try:
key = self.KeyType(key)
except TypeError:
pass
try:
value = self.ValueType(value)
except TypeError:
pass
ret = Lib.bpf_map_update_elem(self._map_fd, ct.byref(key),
ct.byref(value), flags)
if ret < 0:
raise KeyError(f'Unable to update item: {cerr(ret)}')