Copyright	Copyright (c) 2009-2015, David Sorokin <david.sorokin@gmail.com>
License	BSD3
Maintainer	David Sorokin <david.sorokin@gmail.com>
Stability	experimental
Safe Haskell	None
Language	Haskell2010

Simulation.Aivika.QueueStrategy

Description

Tested with: GHC 7.8.3

This module defines the queue strategies.

Synopsis

Documentation

class QueueStrategy s where Source

Defines the basic queue strategy.

Associated Types

data StrategyQueue s :: * -> * Source

A queue used by the strategy.

Methods

newStrategyQueue Source

Arguments

:: s	the strategy
-> Simulation (StrategyQueue s i)	a new queue

Create a new queue by the specified strategy.

strategyQueueNull Source

Arguments

:: StrategyQueue s i	the queue
-> Event Bool	the result of the test

Test whether the queue is empty.

Instances

QueueStrategy StaticPriorities	An implementation of the `StaticPriorities` queue strategy.
QueueStrategy SIRO	An implementation of the `SIRO` queue strategy.
QueueStrategy LCFS	An implementation of the `LCFS` queue strategy.
QueueStrategy FCFS	An implementation of the `FCFS` queue strategy.

class QueueStrategy s => DequeueStrategy s where Source

Defines a strategy with support of the dequeuing operation.

Methods

strategyDequeue Source

Arguments

:: StrategyQueue s i	the queue
-> Event i	the dequeued element

Dequeue the front element and return it.

Instances

DequeueStrategy StaticPriorities	An implementation of the `StaticPriorities` queue strategy.
DequeueStrategy SIRO	An implementation of the `SIRO` queue strategy.
DequeueStrategy LCFS	An implementation of the `LCFS` queue strategy.
DequeueStrategy FCFS	An implementation of the `FCFS` queue strategy.

class DequeueStrategy s => EnqueueStrategy s where Source

It defines a strategy when we can enqueue a single element.

Methods

strategyEnqueue Source

Arguments

:: StrategyQueue s i	the queue
-> i	the element to be enqueued
-> Event ()	the action of enqueuing

Enqueue an element.

Instances

EnqueueStrategy SIRO	An implementation of the `SIRO` queue strategy.
EnqueueStrategy LCFS	An implementation of the `LCFS` queue strategy.
EnqueueStrategy FCFS	An implementation of the `FCFS` queue strategy.

class DequeueStrategy s => PriorityQueueStrategy s p | s -> p where Source

It defines a strategy when we can enqueue an element with the specified priority.

Methods

strategyEnqueueWithPriority Source

Arguments

:: StrategyQueue s i	the queue
-> p	the priority
-> i	the element to be enqueued
-> Event ()	the action of enqueuing

Enqueue an element with the specified priority.

Instances

PriorityQueueStrategy StaticPriorities Double

An implementation of the StaticPriorities queue strategy.

data FCFS Source

Strategy: First Come - First Served (FCFS).

Constructors

FCFS

Instances

Eq FCFS
Ord FCFS
Show FCFS
EnqueueStrategy FCFS	An implementation of the `FCFS` queue strategy.
DequeueStrategy FCFS	An implementation of the `FCFS` queue strategy.
QueueStrategy FCFS	An implementation of the `FCFS` queue strategy.
ResultItemable (ResultValue FCFS)
data StrategyQueue FCFS = FCFSQueue (DoubleLinkedList i)

data LCFS Source

Strategy: Last Come - First Served (LCFS)

Constructors

LCFS

Instances

Eq LCFS
Ord LCFS
Show LCFS
EnqueueStrategy LCFS	An implementation of the `LCFS` queue strategy.
DequeueStrategy LCFS	An implementation of the `LCFS` queue strategy.
QueueStrategy LCFS	An implementation of the `LCFS` queue strategy.
ResultItemable (ResultValue LCFS)
data StrategyQueue LCFS = LCFSQueue (DoubleLinkedList i)

data SIRO Source

Strategy: Service in Random Order (SIRO).

Constructors

SIRO

Instances

Eq SIRO
Ord SIRO
Show SIRO
EnqueueStrategy SIRO	An implementation of the `SIRO` queue strategy.
DequeueStrategy SIRO	An implementation of the `SIRO` queue strategy.
QueueStrategy SIRO	An implementation of the `SIRO` queue strategy.
ResultItemable (ResultValue SIRO)
data StrategyQueue SIRO = SIROQueue (Vector i)

data StaticPriorities Source

Strategy: Static Priorities. It uses the priority queue.

Constructors

StaticPriorities

Instances

Eq StaticPriorities
Ord StaticPriorities
Show StaticPriorities
DequeueStrategy StaticPriorities	An implementation of the `StaticPriorities` queue strategy.
QueueStrategy StaticPriorities	An implementation of the `StaticPriorities` queue strategy.
PriorityQueueStrategy StaticPriorities Double	An implementation of the `StaticPriorities` queue strategy.
ResultItemable (ResultValue StaticPriorities)
data StrategyQueue StaticPriorities = StaticPriorityQueue (PriorityQueue i)