Simulation.Aivika.Dynamics.Buffer

Tested with: GHC 7.4.1

This module defines the limited queue similar to LIFO and FIFO but where the items are not represented. We know only of their number in the buffer and how many items were lost.

Documentation

data Buffer

Represents the limited queue similar to LIFO and FIFO but where the items are not repsented. So, there is no order of items but their number is strictly limited.

bufferQueue :: Buffer -> EventQueue

Return the event queue.

bufferNull :: Buffer -> Dynamics Bool

Test whether the queue is empty.

bufferFull :: Buffer -> Dynamics Bool

Test whether the queue is full.

bufferMaxCount :: Buffer -> Int

The maximum available number of items.

bufferCount :: Buffer -> Dynamics Int

Return the queue size.

bufferLostCount :: Buffer -> Dynamics Int

Return the number of lost items.

newBuffer :: EventQueue -> Int -> Simulation Buffer

Create a new queue with the specified maximum available number of items.

dequeueBuffer :: Buffer -> Process ()

Dequeue suspending the process if the buffer is empty.

tryDequeueBuffer :: Buffer -> Dynamics Bool

Try to dequeue immediately.

enqueueBuffer :: Buffer -> Process ()

Enqueue the item suspending the process if the buffer is full.

tryEnqueueBuffer :: Buffer -> Dynamics Bool

Try to enqueue the item immediately.

enqueueBufferOrLost :: Buffer -> Dynamics ()

Try to enqueue the item. If the buffer is full then the item will be lost.