创建和使用互斥量的过程比仅仅是开始一个线程的过程要稍微复杂一些。
The procedure for creating and using a mutex is a bit more complicated than the procedure for starting a thread.
但是如果想创建稍微复杂一些的组件，针对更复杂的使用场景时该怎么办？
But what if you wanted to create a slightly more complex component, for a slightly more complex usage scenario?
稍微复杂一点的解决方案是让捕获代码的范围更宽一些，但要使用语言的内省能力来报告追溯信息
Slightly more sophisticated is to catch wider spans of code, but to use a language's introspection capabilities to report traceback information
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