Abbreviation for the PriorityChansConverger is PCC.
Based on STM.TChan, extended with capacity control.
Wrapped into IO version is also available.
When user reads from the PCC, the choice is made - from which channel
to read. System selects a nonempty channel, whose (CurrentPriority,
StartPriority) tuple is max. The side effect of the channel selection
is it's CurrentPriority decrease by one, if it's value becomes
less than one, then the CurrentPriority is set to StartPriority.
For the main API interface:
import Control.Concurrent.PriorityChansConverger
The realization probably isn't
very fast and isn't good at memory economy, since it uses fresh high
level primitive - STM. It wasn't intended to be used
with millions of channels. But it's max throughput comparing to the
ordinary Chan throughput is to be estimated (will do it in some
future version).
