系统进入待机状态并恢复时，多线程应用程序崩溃 [英] multithreaded application is crashing when system goes to standby and resumes

问题描述

大家好，

我不知道代码的哪一部分引发了异常.我的应用程序中具有USB自动检测功能.

引发的异常如下:

safe handle closed

   at Microsoft.Win32.UnsafeNativeMethods.GetOverlappedResult(SafeFileHandle hFile, NativeOverlapped* lpOverlapped, Int32& lpNumberOfBytesTransferred, Boolean bWait)
   at System.IO.Ports.SerialStream.EventLoopRunner.WaitForCommEvent()
   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart()

请帮忙！

解决方案

最好检测那些事件，并在事件发生时停止/挂起线程.请查看下面有关检测这些事件的链接.

处理操作系统事件，例如睡眠，待机，休眠，电源状态已更改，电池电量低，临界挂起，交流电源，电池Windows XP和Vista中的电源，电池寿命等. [ ^ ]

使用系统事件来保护您的应用程序数据 [ 解决方案

It is best to detect those events and stop/suspend the thread(s) when they occur. Have a look at the links below about detecting these events.

Handling OS events like Sleep, Stand-by, Hibernate, Power Status Changed, Low Battery, Critial Suspend, AC Power, Battery Power, Battery Life etc... in Windows XP and Vista.[^]

Use System Events To Protect Your Application Data[^]

Good luck!

The 2nd link was in C#. Of course, the code in the article isn''t going to be an exact fit for your needs, but being a programmer, you shouldn''t have any issues extracting and adapting the code you need from it, right?

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