■ 스레드 안전 우선 순위 큐를 만드는 방법을 보여준다.
▶ ThreadSafeSortedList.cs
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using System; using System.Collections.Generic; namespace TestProject { /// <summary> /// 스레드 안전 정렬 리스트 /// </summary> /// <typeparam name="TItemKey">항목 키 타입</typeparam> /// <typeparam name="TItem">항목 타입</typeparam> public class ThreadSafeSortedList<TItemKey, TItem> : SortedList<TItemKey, TItem> { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Protected #region Field /// <summary> /// 동기 객체 /// </summary> protected object syncObject; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 카운트 - Count /// <summary> /// 카운트 /// </summary> public new int Count { get { lock(this.syncObject) { return base.Count; } } } #endregion #region 인덱서 - this[itemKey] /// <summary> /// 인덱서 /// </summary> /// <param name="itemKey">항목 키</param> /// <returns>항목</returns> public new TItem this[TItemKey itemKey] { get { lock(this.syncObject) { return base[itemKey]; } } set { lock(this.syncObject) { base[itemKey] = value; } } } #endregion #region 인덱서 - this[itemKeyIndex] /// <summary> /// 인덱서 /// </summary> /// <param name="itemKeyIndex">항목 키 인덱스</param> /// <returns>항목</returns> public TItem this[int itemKeyIndex] { get { lock(this.syncObject) { TItemKey itemKey = base.Keys[itemKeyIndex]; return base[itemKey]; } } set { lock(this.syncObject) { TItemKey itemKey = base.Keys[itemKeyIndex]; base[itemKey] = value; } } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - ThreadSafeSortedList() /// <summary> /// 생성자 /// </summary> public ThreadSafeSortedList() { this.syncObject = new Object(); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 항목 키 포함 여부 구하기 - ContainsItemKey(itemKey) /// <summary> /// 항목 키 포함 여부 구하기 /// </summary> /// <param name="itemKey">항목 키</param> /// <returns>항목 키 포함 여부</returns> public bool ContainsItemKey(TItemKey itemKey) { lock(this.syncObject) { return base.ContainsKey(itemKey); } } #endregion #region 항목 추가하기 - AddItem(itemKey, item) /// <summary> /// 항목 추가하기 /// </summary> /// <param name="itemKey">항목 키</param> /// <param name="item">항목</param> /// <returns>처리 결과</returns> public bool AddItem(TItemKey itemKey, TItem item) { lock(this.syncObject) { if(base.ContainsKey(itemKey)) { return false; } else { base.Add(itemKey, item); return true; } } } #endregion #region 항목 제거하기 - RemoveItemAt(index) /// <summary> /// 항목 제거하기 /// </summary> /// <param name="index">인덱스</param> public void RemoveItemAt(int index) { lock(this.syncObject) { RemoveAt(index); } } #endregion #region 항목 제거하기 - RemoveItem(itemKey) /// <summary> /// 항목 제거하기 /// </summary> /// <param name="itemKey">항목 키</param> /// <returns>처리 결과</returns> public bool RemoveItem(TItemKey itemKey) { lock(this.syncObject) { return base.Remove(itemKey); } } #endregion #region 데이터 제거하기 - ClearData() /// <summary> /// 데이터 제거하기 /// </summary> public void ClearData() { lock(this.syncObject) { Clear(); } } #endregion } } |
▶ ThreadSafeSortedListQueue.cs
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namespace TestProject { /// <summary> /// 스레드 안전 정렬 리스트 큐 /// </summary> /// <typeparam name="TItemKey">항목 키 타입</typeparam> /// <typeparam name="TItem">항목 타입</typeparam> public class ThreadSafeSortedListQueue<TItemKey, TItem> : ThreadSafeSortedList<TItemKey, TItem> { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 항목 넣기 - EnqueueItem(itemKey, item) /// <summary> /// 항목 넣기 /// </summary> /// <param name="itemKey">항목 키</param> /// <param name="item">항목</param> /// <returns>처리 결과</returns> public bool EnqueueItem(TItemKey itemKey, TItem item) { return AddItem(itemKey, item); } #endregion #region 항목 엿보기 - PeekItem() /// <summary> /// 항목 엿보기 /// </summary> /// <returns>항목</returns> public TItem PeekItem() { lock(this.syncObject) { if(base.Count > 0) { return this[0]; } else { return default(TItem); } } } #endregion #region 항목 꺼내기 - DequeueItem() /// <summary> /// 항목 꺼내기 /// </summary> /// <returns>항목</returns> public TItem DequeueItem() { lock(this.syncObject) { if(Count > 0) { TItem item = this[0]; base.RemoveAt(0); return item; } else { return default(TItem); } } } #endregion } } |
▶ IKeyMessage.cs
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namespace TestProject { /// <summary> /// 키 메시지 인터페이스 /// </summary> public interface IKeyMessage<TItemKey> { //////////////////////////////////////////////////////////////////////////////////////////////////// Property #region 키 - Key /// <summary> /// 키 /// </summary> TItemKey Key { get; set; } #endregion } } |
▶ IPriorityMessage.cs
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namespace TestProject { /// <summary> /// 우선 순위 메시지 인터페이스 /// </summary> public interface IPriorityMessage { //////////////////////////////////////////////////////////////////////////////////////////////////// Property #region 우선 순위 - Priority /// <summary> /// 우선 순위 /// </summary> int Priority { get; set; } #endregion } } |
▶ ThreadSafePriorityQueue.cs
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using System.Collections.Generic; namespace TestProject { /// <summary> /// 스레드 안전 우선 순위 큐 /// </summary> /// <typeparam name="TItemKey">항목 키 타입</typeparam> /// <typeparam name="TIem">항목 타입</typeparam> public class ThreadSafePriorityQueue<TItemKey, TItem> : Dictionary<int, ThreadSafeSortedListQueue<TItemKey, TItem>> where TItem : IKeyMessage<TItemKey>, IPriorityMessage { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Protected #region Field /// <summary> /// 동기 객체 /// </summary> protected object syncObject; /// <summary> /// 우선 순위 카운트 /// </summary> protected int priorityCount; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 우선 순위 카운트 - PriorityCount /// <summary> /// 우선 순위 카운트 /// </summary> public int PriorityCount { get { return this.priorityCount; } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - ThreadSafePriorityQueue(priorityCount) /// <summary> /// 생성자 /// </summary> /// <param name="priorityCount">우선 순위 카운트</param> public ThreadSafePriorityQueue(int priorityCount) { this.syncObject = new object(); this.priorityCount = priorityCount; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 항목 넣기 - EnqueueItem(item) /// <summary> /// 항목 넣기 /// </summary> /// <param name="item">항목</param> public void EnqueueItem(TItem item) { lock(this.syncObject) { int priority = item.Priority; if(priority < 0) { priority = 0; } if(priority >= this.priorityCount) { priority = this.priorityCount - 1; } ThreadSafeSortedListQueue<TItemKey, TItem> queue; if(base.ContainsKey(priority)) { queue = this[priority]; } else { queue = new ThreadSafeSortedListQueue<TItemKey, TItem>(); base.Add(priority, queue); } queue.EnqueueItem(item.Key, item); } } #endregion #region 항목 꺼내기 - DequeueItem() /// <summary> /// 항목 꺼내기 /// </summary> /// <returns>항목</returns> public TItem DequeueItem() { lock(this.syncObject) { for(int i = this.priorityCount - 1; i >= 0; i--) { if(ContainsKey(i)) { ThreadSafeSortedListQueue<TItemKey, TItem> queue = this[i]; if(queue.Count > 0) { TItem item = queue.DequeueItem(); return item; } } } return default(TItem); } } #endregion #region 항목 카운트 구하기 - GetItemCount() /// <summary> /// 항목 카운트 구하기 /// </summary> /// <returns>항목 카운트</returns> public int GetItemCount() { lock(this.syncObject) { int count = 0; foreach(KeyValuePair<int, ThreadSafeSortedListQueue<TItemKey, TItem>> keyValuePair in this) { count += keyValuePair.Value.Count; } return count; } } #endregion #region 데이터 지우기 - ClearData() /// <summary> /// 데이터 지우기 /// </summary> public void ClearData() { lock(this.syncObject) { foreach(KeyValuePair<int, ThreadSafeSortedListQueue<TItemKey, TItem>> keyValuePair in this) { ThreadSafeSortedListQueue<TItemKey, TItem> queue = keyValuePair.Value; queue.ClearData(); } Clear(); } } #endregion } } |
▶ TestMessage.cs
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namespace TestProject { /// <summary> /// 테스트 메시지 /// </summary> public class TestMessage : IKeyMessage<string>, IPriorityMessage { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 키 - Key /// <summary> /// 키 /// </summary> public string Key { get; set; } #endregion #region 우선 순위 - Priority /// <summary> /// 우선 순위 /// </summary> public int Priority { get; set; } #endregion } } |
▶ Program.cs
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using System; using System.Collections.Generic; namespace TestProject { /// <summary> /// 프로그램 /// </summary> class Program { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region 프로그램 시작하기 - Main() /// <summary> /// 프로그램 시작하기 /// </summary> private static void Main() { List<TestMessage> sourceMessageList = new List<TestMessage>(); sourceMessageList.Add(new TestMessage { Priority = 0, Key = "01" }); sourceMessageList.Add(new TestMessage { Priority = 1, Key = "02" }); sourceMessageList.Add(new TestMessage { Priority = 2, Key = "03" }); sourceMessageList.Add(new TestMessage { Priority = 2, Key = "04" }); sourceMessageList.Add(new TestMessage { Priority = 3, Key = "05" }); sourceMessageList.Add(new TestMessage { Priority = 4, Key = "06" }); sourceMessageList.Add(new TestMessage { Priority = 4, Key = "07" }); ThreadSafePriorityQueue<string, TestMessage> messageQueue = new ThreadSafePriorityQueue<string, TestMessage>(5); foreach(TestMessage sourceMessage in sourceMessageList) { messageQueue.EnqueueItem(sourceMessage); Console.WriteLine("ENQUEUE ITEM : {0}, {1}", sourceMessage.Priority, sourceMessage.Key); } TestMessage message; do { message = messageQueue.DequeueItem(); if(message == null) { return; } Console.WriteLine("DEQUEUE ITEM : {0}, {1}", message.Priority, message.Key); } while(true); } #endregion } } |
