我正在使用
以下是代码，但它不会按照我的期望工作，因为如果Windows服务在运行中停止，当前运行的线程将永远无法完成。
System.Timers.Timer构建一个Windows服务。定时器所执行的任务可能需要几秒钟到几分钟的时间。我希望确保当服务停止时，所有已委托的线程在被处理之前都能完成。以下是代码，但它不会按照我的期望工作，因为如果Windows服务在运行中停止，当前运行的线程将永远无法完成。
public abstract class AgentServiceBase : ServiceBase
{
private System.ComponentModel.IContainer components = null;
private System.Timers.Timer _Timer;
private string _logPath;
private const int MAXNUMBEROFTHREADS = 10;
protected int interval = 25000;
protected int numberOfAllowedThreads = 2;
public AgentServiceBase()
{
this.InitializeComponent();
this._logPath = (Path.GetDirectoryName(Assembly.GetAssembly(this.GetType()).CodeBase)).Substring(6).Replace("/", @"\");
}
protected override void OnStart(string[] args)
{
if (args.Length > 0)
{
int.TryParse(args[0], out interval);
}
if (args.Length > 1)
{
int.TryParse(args[1], out numberOfAllowedThreads);
if (numberOfAllowedThreads > MAXNUMBEROFTHREADS)
{
numberOfAllowedThreads = MAXNUMBEROFTHREADS;
}
if (numberOfAllowedThreads == 1)
{
numberOfAllowedThreads = 2;
}
}
ThreadPool.SetMaxThreads(numberOfAllowedThreads, numberOfAllowedThreads);
this._Timer = new System.Timers.Timer();
this._Timer.Elapsed += new ElapsedEventHandler(PollWrapper);
this._Timer.Interval = this.interval;
this._Timer.Enabled = true;
}
protected override void OnStop()
{
this._Timer.Enabled = false;
Process currentProcess = Process.GetCurrentProcess();
foreach (Thread t in currentProcess.Threads)
{
t.Join();
}
}
/// <summary>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
private void InitializeComponent()
{
components = new System.ComponentModel.Container();
this.ServiceName = "Agent Service - Johnhenry";
}
private void PollWrapper(object sender, ElapsedEventArgs e)
{
try
{
this.Poll(sender, e);
}
catch (Exception exception)
{
string message = this.GetType().FullName + " - Windows Service Exception\n";
message += exception.GetNestedExceptionInSingleStringOutput();
FileHelper.Log(message, this._logPath, "exception", FileHelper.LogFileNameChangeFrequency.DAYLY);
}
}
protected abstract void Poll(object sender, ElapsedEventArgs e);
}
非常感谢，
乔塞佩
更新:
在多次尝试计算当前进程自身线程后，我最终选择了更简单的解决方案，即使用计数器来计算定时器启动并仍在运行的线程数量。基于此，我在主线程上调用Sleep并发出RequestAdditionalTime，直到所有线程都结束。
以下是修订后的2种方法：
protected override void OnStop()
{
this._Timer.Enabled = false;
while (numberOfRunningThreads > 0)
{
this.RequestAdditionalTime(1000);
Thread.Sleep(1000);
}
}
private void PollWrapper(object sender, ElapsedEventArgs e)
{
numberOfRunningThreads++;
try
{
this.Poll(sender, e);
}
catch (Exception exception)
{
string message = this.GetType().FullName + " - Windows Service Exception\n";
message += exception.GetNestedExceptionInSingleStringOutput();
FileHelper.Log(message, this._logPath, "exception", FileHelper.LogFileNameChangeFrequency.DAYLY);
}
finally
{
numberOfRunningThreads--;
}
}