.net4,监视器.enter(lockobject,acquiredlock)

在NET4中, Monitor.Enter(Object) 标记为已过时:

[ObsoleteAttribute("This method does not allow its caller to reliably release the lock.  Please use an overload with a lockTaken argument instead.")]
public static void Enter(
    Object obj
)

还有一种新方法 Monitor.Enter(lockObject, acquiredLock) 使用此用法:

bool acquiredLock = false;

try
{
    Monitor.Enter(lockObject, ref acquiredLock);

    // Code that accesses resources that are protected by the lock.

}
finally
{
    if (acquiredLock)
    {
        Monitor.Exit(lockObject);
    }
}

我以前是这样做的:

Monitor.Enter(lockObject);
try
{

    // Code that accesses resources that are protected by the lock.
}
finally
{
    Monitor.Exit(lockObject);
}

这是错的吗?为什么? 可能是在进入后但在尝试前的一段插曲?
正如eamon-nerbonne所问的:如果在monitor.exit之前的finally中有一个异步异常,会发生什么?

答: ThreadAbortException

当引发此异常时, 运行时最终执行所有 在结束线程之前阻止。