Class IProducer
Interface
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IProducer
A producer produces data for a consumer.
If this is a streaming producer, it will only be asked to resume
producing if it has been previously asked to pause. Also, if this is a
streaming producer, it will ask the producer to pause when the buffer has
reached a certain size.
In other words, a streaming producer is expected to produce (write to
this consumer) data in the main IO thread of some process as the result
of a read operation, whereas a non-streaming producer is expected to
produce data each time resumeProducing() is called.
If this is a non-streaming producer, resumeProducing will be called
immediately, to start the flow of data. Otherwise it is assumed that the
producer starts out life unpaused.
pauseProducing(self)
Pause producing data.
Tells a producer that it has produced too much data to process for the
time being, and to stop until resumeProducing() is called.
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resumeProducing(self)
Resume producing data.
This tells a producer to re-add itself to the main loop and produce
more data for its consumer.
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stopProducing(self)
Stop producing data.
This tells a producer that its consumer has died, so it must stop
producing data for good.
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