是的AppDomain等同于.NET code一个过程？ [英] Is AppDomain equivalent to a Process for .NET code?

问题描述

我必须调用有内存泄漏和使用单线程公寓[STA]在长时间运行过程中的一些写得很差的第三方COM组件。

I have to call some badly written 3rd party COM components that have memory leaks and uses Single Threaded Apartment [STA] within a long running process.

我知道单独的进程将是很好的方式来实现它，我可以从长时间运行的过程中偶尔会重新启动。

I know separate process will be nice way to implement it and I can restart it occasionally from the long running process.

可以AppDomain中使用呢？是的AppDomain线程STA线程，如果打上appropiately？它有自己的内存为COM对象？正在卸载在AppDomain是相当于杀死进程？

Can AppDomain be used instead? Is AppDomain thread a STA thread if marked appropiately? Does it have its own memory for COM objects? Is unloading the AppDomain is equivalent of killing the process?

推荐答案

这是应用程序域作为一个过程确实不提供隔离的相同程度。事实上，如果你担心第三方组件是不是在良好的状态有一个风险，它会记下你的.NET应用程序。

An AppDomain does not provide the same degree of isolation as a process does. In fact if you're worried that the 3rd party component is not in good shape there's a risk, that it will take down your .NET application.

如果非托管code执行在卸载的时候一个AppDomain无法卸载，所以你可能有一个很难控制的第三方code在一个AppDomain。请参阅<一href="http://msdn.microsoft.com/en-us/library/system.appdomain.unload.aspx">http://msdn.microsoft.com/en-us/library/system.appdomain.unload.aspx

An AppDomain cannot be unloaded if unmanaged code is executing at the time of unload, so you may have a hard time controlling your 3rd party code in an AppDomain. See http://msdn.microsoft.com/en-us/library/system.appdomain.unload.aspx

即使是管理code而已，一个AppDomain不提供强大的沙盒解决方案。例如。如果加载code派生的任何线程，这些将记下的情况下，未处理异常的全过程。这个问题有一点信息：<一href="http://stackoverflow.com/questions/219594/net-whats-the-best-way-to-implement-a-catch-all-exceptions-handler">http://stackoverflow.com/questions/219594/net-whats-the-best-way-to-implement-a-catch-all-exceptions-handler.

Even for managed code only, an AppDomain does not provide a robust sandbox solution. E.g. if the loaded code spawns any threads these will take down the entire process in case of unhandled exceptions. This question has a bit more info: http://stackoverflow.com/questions/219594/net-whats-the-best-way-to-implement-a-catch-all-exceptions-handler.

据我所知主办code一样，在.NET应用程序的最佳选择是实现自己的CLR主机进程如IIS和SQL Server一样。

As far as I am aware the best option for hosting code like that in a .NET application is to implement your own CLR host process like IIS and SQL Server does.

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