c# - ThreadAbortException 是否仍然强制执行 finally (try/catch) 部分中的代码？

Question

我有一个 System.Timers.Timer 计时器，它的 AutoReset 设置为 false。我使用 try/finally 来确保我在 callback 结束时 Start 计时器(我以这种方式使用计时器来防止重叠回调执行)。代码:

// inside timer call back
try
{
    // Do something
}
finally
{
    timer.Start(); // Is this line always executed?
}

我的问题是如果正在执行的线程中止会发生什么？ finally 部分是否仍在执行，或者没有线程运行该部分？

Answer 1

官方来源...

When a call is made to the Abort method to destroy a thread, the common language runtime throws a ThreadAbortException. ThreadAbortException is a special exception that can be caught, but it will automatically be raised again at the end of the catch block. When this exception is raised, the runtime executes all the finally blocks before ending the thread. Because the thread can do an unbounded computation in the finally blocks or call Thread.ResetAbort to cancel the abort, there is no guarantee that the thread will ever end. If you want to wait until the aborted thread has ended, you can call the Thread.Join method. Join is a blocking call that does not return until the thread actually stops executing.

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