aeron-driver/src/main/java/io/aeron/driver/NetworkPublication.java
final int updatePublisherLimit()
    {
        int workCount = 0;

        final long senderPosition = this.senderPosition.getVolatile();
        if (hasReceivers || (spiesSimulateConnection && spyPositions.length > 0))
        {
            long minConsumerPosition = senderPosition;
            for (final ReadablePosition spyPosition : spyPositions)
            {
                minConsumerPosition = Math.min(minConsumerPosition, spyPosition.getVolatile());
            }

            final long proposedPublisherLimit = minConsumerPosition + termWindowLength;
            if (publisherLimit.proposeMaxOrdered(proposedPublisherLimit))
            {
                cleanBuffer(proposedPublisherLimit);
                workCount = 1;
            }
        }
        else if (publisherLimit.get() > senderPosition)
        {
            publisherLimit.setOrdered(senderPosition);
        }

        return workCount;
    }
final int updatePublisherLimit()
    {
        int workCount = 0;

        final long senderPosition = this.senderPosition.getVolatile();
        if (hasReceivers || (spiesSimulateConnection && spyPositions.length > 0))
        {
            long minConsumerPosition = senderPosition;
            for (final ReadablePosition spyPosition : spyPositions)
            {
                minConsumerPosition = Math.min(minConsumerPosition, spyPosition.getVolatile());
            }

            final long proposedPublisherLimit = minConsumerPosition + termWindowLength;
            if (publisherLimit.proposeMaxOrdered(proposedPublisherLimit))
            {
                cleanBuffer(proposedPublisherLimit);
                workCount = 1;
            }
        }
        else if (publisherLimit.get() > senderPosition)
        {
            publisherLimit.setOrdered(senderPosition);
        }

        return workCount;
    }
Update the publishers limit for flow control as part of the conductor duty cycle.

@return 1 if the limit has been updated otherwise 0.