Part of twisted.internet.defer View Source View In Hierarchy
Objects may be added as usual to this queue. When an attempt is made to
retrieve an object when the queue is empty, a
returned which will fire when an object becomes available.
|Instance Variable||size||The maximum number of objects to allow into the queue at a time. When an
attempt to add a new object would exceed this limit,
|Instance Variable||backlog||The maximum number of
|Method||put||Add an object to this queue.|
|Method||get||Attempt to retrieve and remove an object from the queue.|
|Method||_cancelGet||Remove a deferred d from our waiting list, as the deferred has been canceled.|
QueueOverflowis raised synchronously.
Nonefor no limit.
Note: We do not need to wrap this in a try/except to catch d not being in self.waiting because this canceller will not be called if d has fired. put() pops a deferred out of self.waiting and calls it, so the canceller will no longer be called.
|Parameters||d||The deferred that has been canceled.|
|Raises||QueueOverflow||Too many objects are in this queue.|