ABA在无锁算法中
我了解 ABA 问题。但我无法理解的是：他们说在自动垃圾收集的语言中可能无法展示。所以我的问题是：
I understand the ABA problem. But the thing which I am unable to comprehend is: they say that in languages having automatic garbage collection it may not exhibit. So my questions are:
- 自动垃圾收集如何防止发生ABA问题？
- 是吗？可能在java中，如果是，如何？
- 是否可以防止这种情况发生？
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当启用自动垃圾收集时，不能同时使用相同的引用分配两个对象并同时共存，这是因为只要引用计数更大那么0引用本身将不会被释放并重新使用。
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When automatic garbage collection is enabled ,no two objects can be allocated with the same reference and co-exist at the same time,that's because as long as there is a reference count greater then 0 the reference itself will not be released and re-used.
所以你不能将参考内容切换为不同对象的点，而有人仍然拥有旧参考。
so you cannot "switch" the reference contents to "point" for different object while someone still has the old reference.
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