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class _UniffiHandleMap:
"""
A map where inserting, getting and removing data is synchronized with a lock.
"""
def __init__(self):
# type Handle = int
self._map = {} # type: Dict[Handle, Any]
self._lock = threading.Lock()
self._counter = itertools.count()
def insert(self, obj):
with self._lock:
handle = next(self._counter)
self._map[handle] = obj
return handle
def get(self, handle):
try:
with self._lock:
return self._map[handle]
except KeyError:
raise InternalError("UniffiHandleMap.get: Invalid handle")
def remove(self, handle):
try:
with self._lock:
return self._map.pop(handle)
except KeyError:
raise InternalError("UniffiHandleMap.remove: Invalid handle")
def __len__(self):
return len(self._map)
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