大橙子网站建设,新征程启航
为企业提供网站建设、域名注册、服务器等服务
多线程一般是不推荐用的,因为线程之间如果有共享资源的话会引起竞争,需要加锁处理;而且线程间没有时序关系,所以你在调试中可能会出现异步处理结束顺序与开始处理顺序不一致的情况(我在调试中已经发现该问题)。
成都创新互联公司是一家专注于成都做网站、网站设计与策划设计,弓长岭网站建设哪家好?成都创新互联公司做网站,专注于网站建设十载,网设计领域的专业建站公司;建站业务涵盖:弓长岭等地区。弓长岭做网站价格咨询:028-86922220
针对你提出的这个问题,采用了多线程处理,利用的是BackgroundWorker也就是异步处理控件进行了处理。
代码已经经过调试通过。欢迎交流,如有问题,留下QQ或其他联系方式。
代码如下,并附程序截图。
‘---------------------------------------------------
Imports System.ComponentModel '导入异步控件命名空间
Public Class Form1
Private howmany As Integer = 10
Private AnalysisNumber(0 To howmany - 1) As BackgroundWorker
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
ListBox1.Items.Clear()
creatNewBackgroundWorker()
addHandle()
startWork()
End Sub
Private Sub creatNewBackgroundWorker()
For i As Integer = 0 To AnalysisNumber.Length - 1
AnalysisNumber(i) = New BackgroundWorker
Next
End Sub
Private Sub addHandle()
For i As Integer = 0 To AnalysisNumber.Length - 1
AddHandler AnalysisNumber(i).DoWork, AddressOf AnalysisNumber_DoWork
AddHandler AnalysisNumber(i).RunWorkerCompleted, AddressOf AnalysisNumber_RunWorkerCompleted
Next
End Sub
Private Sub startWork()
For i As Integer = 0 To 9
Dim temp(0 To 9) As Integer
For j As Integer = 1 To 10
temp(j - 1) = 10 * i + j
Next
AnalysisNumber(i).RunWorkerAsync(temp)
Next
End Sub
Private Sub AnalysisNumber_DoWork(ByVal sender As Object, ByVal e As System.ComponentModel.DoWorkEventArgs)
Dim data As Integer()
data = CType(e.Argument, Integer())
Dim temp As Integer
For i As Integer = 0 To data.Length - 1
temp = data(i)
data(i) = temp * temp
Next
e.Result = data
End Sub
Private Sub AnalysisNumber_RunWorkerCompleted(ByVal sender As Object, ByVal e As System.ComponentModel.RunWorkerCompletedEventArgs)
Dim data As Integer()
data = CType(e.Result, Integer())
For i As Integer = 0 To data.Length - 1
ListBox1.Items.Add(data(i))
Next
End Sub
End Class
如何处理锁死?同步的程序就有这个缺陷,条件得不到满足就不会返回。所以想不锁死就只能满足
a.StandardOutput.ReadLine的需求。
如果确实满足不了或者无法预料能否满足怎么办?
将这个方法放入一个线程,这样线程锁死,主程序界面也不会锁死,还是会响应用户操作,而且主线程可以设定一个等待时间,如果超时就杀死线程。
还是并发加锁,你判断时候,上一个线程还未执行_datalist.RemoveAt(0),所0,然后就会出错了,你最好先 Remove到一个变量里,然后执行发送,在Remove和判断的时候加锁