为什么这个 GC 系统不好？
我想到了一个我看不出有什么重大缺陷的 GC，我想知道为什么它没有被更广泛地使用，或者为什么我没有听说过它的使用。
该系统是：
- 所有对象都附有一个 4 字节 unsigned int 计数器。 （可能是 2 个字节，我不知道。
- 每当构造一个对象时，它的计数器就会从 1 开始。
- 当一个对象作为参数发送给函数时，它的计数器就会递增。
- 当一个对象到达它所在的点时，它 的计数器就会递增。不再在函数中使用（可能是作用域的最末端），
- 当对象的计数器达到零时，它被删除，因为在代码中没有引用它的
边缘情况 。计数器出现故障？有哪些缺点和优点？
提前感谢您的帮助。
I have thought of a GC which I can't see major flaws with, and I am wondering why it isn't used more prevalently, or why I haven't heard of its use.
The system is:
- All objects have a 4 byte unsigned int counter attached to them. (Could be 2 bytes, I don't know.
- Whenever an object is constructed, its counter is started at 1.
- When an object is sent to a function as a parameter, its counter is incremented.
- When an object reaches the point where it is no longer used within a function (Could be the very end of scope) its counter is decremented.
- When the object's counter reaches zero, it is deleted, as at no position in code is it referenced.
Is there a fringe case in which the counter becomes faulty? What are the disadvantages, and the advantages?
Thank you in advance for your assistance.
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它被称为引用计数。我建议阅读维基百科文章，因为它涵盖了优点和缺点。
Its called reference counting. I would suggest reading the wikipedia article as it covers the advantages and disadvantages.