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下面，您将找到我最新的编码心痛的来源。它是基类中的一个小方法，在辅助线程中运行派生类的方法。此代码在每 5 分钟启动一次的 Windows 服务中运行大约 5 次。

Private Sub performAction(ByVal startedAt As DateTime)
    Dim waiter As New System.Threading.AutoResetEvent(False)
    Try
        Dim statusTimeout As Short = DefaultTimeOutSeconds
        Dim action As Threading.Thread = New Threading.Thread(AddressOf ActionToPerform)
        Dim configHelper As New ApplicationHelper.SST_CONFIG()
        Short.TryParse(configHelper.GetConfig(String.Format("{0}.Timeout", ActorType), DefaultTimeOutSeconds), statusTimeout)
        action.SetApartmentState(System.Threading.ApartmentState.STA)
        action.Priority = Threading.ThreadPriority.Highest
        action.Start()
        While LastUpdated < startedAt AndAlso DateTime.Now <= startedAt.AddSeconds(statusTimeout)
            waiter.WaitOne(1000)
        End While
    Finally
        waiter.Close()
    End Try
End Sub

它会运行一段时间。最终它会耗尽内存。从那时起，将引发内存错误，直到服务重新启动。实际抛出的错误的文本如下：

System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
at System.Threading.WaitHandle.WaitOneNative(SafeHandle waitableSafeHandle, UInt32 millisecondsTimeout, Boolean hasThreadAffinity, Boolean exitContext)
at System.Threading.WaitHandle.InternalWaitOne(SafeHandle waitableSafeHandle, Int64 millisecondsTimeout, Boolean hasThreadAffinity, Boolean exitContext)
at System.Threading.WaitHandle.WaitOne(Int32 millisecondsTimeout, Boolean exitContext)
at System.Threading.WaitHandle.WaitOne(Int32 millisecondsTimeout)
at DeviceManagement.AsynchronousDeviceAction.performAction(Thread& action, DateTime startedAt)
at DeviceManagement.AsynchronousDeviceAction.Perform()
at DeviceManagement.PAJournalPrinter.GetStatus();

直到我开始使用 AutoResetEvent 来控制我的 while 循环，这些错误才真正开始发生。我曾经使用 System.Threading.Thread.Sleep。但是，当我使用 sleep 方法时，我调用的 com 对象之一永远不会运行。更改为 AutoResetEvent 可以运行该代码，但是即使调用 com 对象的方法不是要运行的派生类之一，现在也会显示内存错误。

请帮忙。:)

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1 回答 1

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Going back to system.threading.thread.sleep solved my problem. Only the device that needs the AutoResetEvent to work is using AutoResetEvent . The memory erorrs have gone way.

于 2013-03-18T15:46:35.633 回答