Question

我开发了适用于大型DataSet的.net 4.0 Windows服务。我知道DataSet并不是加载大量数据的最佳方法，与此同时，我在重新设计应用程序时，我想知道管理OutOfMemoryException的最佳方法，因为在第一次引发异常之后，它Windows服务启动的以下所有任务都会发生。我认为在内存不足异常发生后，它会为当前任务抛出该任务使用的内存，而GC无法清除该内存。

我的情况类似于

public partial class MyWinService : ServiceBase
{
    DBService service;
    IEnumerable<long> unfinishedRequests;
    List<long> activeRequests;

    protected override void OnStart(string[] args)
    {
       timer1.Elapsed += Timer_Tick;
        timer1.Start();
        activeRequests = new List<MyTask>();
    }

    private void Timer_Tick(object sender, System.Timers.ElapsedEventArgs e)
    {
            MyTask task = GetNewScheduledAppointment();
           If(task != null)
             activeRequests.Add(task);

           task = GetTaskToRun(activeRequests);
           If(task != null)   
            RunTask(task );
    }

      private IRunNowToken RunTask(ServiceTask serviceTask)
        {


            ProcessRunner runner = CreateProcessRunner(serviceTask);

            TaskFactory ts = new TaskFactory(serviceTask.TokenSource.Token);
            ts.StartNew(() => { }).ContinueWith((Task tsk) =>
            {
                try
                {
                    AddTask(serviceTask, tsk);
                    try
                    {
                        runner.Run();
                    }
                    finally
                    {
                        RemoveTask(serviceTask);
                    }
                }
                catch (Exception e)
                {
                    HandleException(e);
                }
                finally
                {
                    FinalizeRunAlarm(alarm);
                }
            }, serviceTask.TokenSource.Token);

            return serviceTask.RunToken;
        }

OutOfMemory执行由RunTask管理。如何修改它以确保将清除当前任务的内存？

谢谢

Answer 1

Please note that fixing Memory leak is the correct way to fix this issue.

But as you said, meanwhile Please check if this works:

If you are running a 64 bit OS and RAM + VM > 4GB, goto Project > Properties > Build tab, untick the "Prefer 32-bit" checkbox and then try running the app.

If you get the same exception even after trying this, then I think you might have to start working on Re-Engineering your code.

如何处理Windows Service中的内存不足异常循环

1 个答案: