Increment and decrement the reference count in a process-queue. If the queue is being driven from two external (non thread-pool) threads, eg "main" and a "reader", this permits each end to decrement its use of the process-queue independently.
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Increment and decrement the reference count in a process-queue. If the queue is being driven from two external (non thread-pool) threads, eg "main" and a "reader", this permits each end to decrement its use of the process-queue independently.