多线程小记，线程控制并发

private AutoResetEvent exitEvent;
private void ProcessA()
{
   while (true)
   {
       Console.WriteLine("do some thing");
       if (exitEvent.WaitOne(waitTime))
       {
       break;
   　　}
   }
　　Console.WriteLine("exit");
}
exitEvent.Set();

private void ProcessB()
{
   while (true)
   {
       Console.WriteLine("do some thing");
      Thread.Sleep(waitTime)
   }
}

 public SemaphoreSlim semaphoreSlim = new SemaphoreSlim(10);//并发限制为10

semaphoreSlim.Wait();
ThreadPool.QueueUserWorkItem(t => {
   Console.WriteLine("do some thing");
　　semaphoreSlim.Release();
});