113 lines
3.0 KiB
C#
113 lines
3.0 KiB
C#
using Cognex.VisionPro;
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using System;
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using System.Collections.Concurrent;
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using System.Threading;
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using System.Threading.Tasks;
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namespace ConVX.VXData
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{
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public class DataPostbox
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{
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#region 字段
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/// <summary>
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/// 图像队列:来存储数据信封（CogImage8Grey）的队列。
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/// </summary>
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private ConcurrentQueue<CogImage8Grey> _queue;
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/// <summary>
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/// 判断线程状态
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/// </summary>
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//private AutoResetEvent _autoReset = null;
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/// <summary>
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/// 线程
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/// </summary>
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private Task _task;
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/// <summary>
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/// 控制任务启动
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/// </summary>
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private CancellationTokenSource RuningToken;
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#endregion
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#region 事件
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/// <summary>
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/// 当有信件被派发时触发的事件。
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/// </summary>
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public event Action<CogImage8Grey> DeliverLetterEvent;
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/// <summary>
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/// 当发生错误时触发的事件。
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/// </summary>
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public event Action<string> ErrorEvent;
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#endregion
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#region 公开的方法
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/// <summary>
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/// 构造函数
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/// </summary>
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public DataPostbox()
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{
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_queue = new ConcurrentQueue<CogImage8Grey>();
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}
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/// <summary>
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/// 启动派发
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/// </summary>
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public void Start()
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{
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RuningToken = new CancellationTokenSource();//创建启动
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_task = new Task(() => EnvelopeProcessing(), RuningToken.Token);
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_task.Start();//线程启动
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}
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/// <summary>
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/// 停止派发
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/// </summary>
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public async void Stop()
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{
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try
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{
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RuningToken.Cancel();
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await _task;
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}
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catch (OperationCanceledException ex)
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{
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_task.Dispose();
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_task = null;
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}
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}
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/// <summary>
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/// 邮寄信件
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/// </summary>
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/// <param name="envelope">信息信件</param>
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public void Mailing(CogImage8Grey envelope)
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{
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_queue.Enqueue(envelope);
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}
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#endregion
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#region 数据处理线程
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private void EnvelopeProcessing()
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{
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while (!RuningToken.IsCancellationRequested)
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{
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if (_queue.IsEmpty)
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{
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Thread.Sleep(1);
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}
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else
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{
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try
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{
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CogImage8Grey envelope;
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if (_queue.TryDequeue(out envelope))
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{
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DeliverLetterEvent(envelope);
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}
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}
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catch (Exception ex)
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{
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ErrorEvent(string.Format("数据队列出队失败，原因：{0}", ex.Message.ToString()));
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}
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}
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}
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}
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#endregion
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}
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}
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