Part of twisted.internet.defer View Source View In Hierarchy
An event driven queue.Objects may be added as usual to this queue. When an attempt is made to retrieve an object when the queue is empty, a Deferred is returned which will fire when an object becomes available.
|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, QueueOverflow is raised synchronously. None for no limit.
|The maximum number of Deferred gets to allow at one time. When an attempt is made to get an object which would exceed this limit, QueueUnderflow is raised synchronously. None for no limit.
|Add an object to this queue.
|Attempt to retrieve and remove an object from the queue.
|Too many objects are in this queue.
|a Deferred which fires with the next object available in the queue.
|Too many (more than
backlog) Deferreds are already waiting
for an object from this queue.