等待QueueUserWorkItem来完成 [英] Wait for QueueUserWorkItem to Complete
本文介绍了等待QueueUserWorkItem来完成的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如果我想补充的工作线程池与 QueueUserWorkItem
...我怎么把我的程序从直到所有作业完成前进?
If I add jobs to the thread pool with QueueUserWorkItem
... how do I keep my program from going forward until all jobs are completed?
我知道我可以添加一些逻辑,以保持应用程序运行,直到所有的作业完成,但我想知道是否有类似的Thread.join()
或是否有任何的方式来检索被分配作业的每个线程。
I know I could add some logic to keep the app from running until all jobs are completed, but I want to know if there is something like Thread.Join()
or if there's any way to retrieve each thread that is being assigned a job.
推荐答案
您可以使用事件同步。像这样的:
You could use events to sync. Like this:
private static ManualResetEvent resetEvent = new ManualResetEvent(false);
public static void Main()
{
ThreadPool.QueueUserWorkItem(arg => DoWork());
resetEvent.WaitOne();
}
public static void DoWork()
{
Thread.Sleep(5000);
resetEvent.Set();
}
如果您不想嵌入事件设置成你的方法,你可以做这样的事情:
If you don't want to embed event set into your method, you could do something like this:
var resetEvent = new ManualResetEvent(false);
ThreadPool.QueueUserWorkItem(
arg =>
{
DoWork();
resetEvent.Set();
});
resetEvent.WaitOne();
有关多个项目:
var events = new List<ManualResetEvent>();
foreach(var job in jobs)
{
var resetEvent = new ManualResetEvent(false);
ThreadPool.QueueUserWorkItem(
arg =>
{
DoWork(job);
resetEvent.Set();
});
events.Add(resetEvent);
}
WaitHandle.WaitAll(events.ToArray());
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