Comments (6)
lengyue1024
commented on July 27, 2024
可以参考一下这篇文章https://foofish.net/python-gc.html
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xxleyi
commented on July 27, 2024
我看了上面这篇文章，提到的「标记清除」所涉及到的参考文档中并未提及到 Python，更像是针对垃圾回收各类策略的介绍。
我又查了一下，如果以下参考并无太大问题的话，至少在目前的 CPython 实现中，还未采用「标记清除」算法。
Garbage Collection for Python
Making Python 3 more attractive [LWN.net]
以及，在下面这个对比 Python 和 Ruby 的对比中的说法是「某种程度上类似」，那这意思就是不是喽？
In a way, Python’s GC algorithm resembles the mark and sweep algorithm Ruby uses.
Generational GC in Python and Ruby | via @codeship
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wen-fei
commented on July 27, 2024
提了呀，仔细看
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xxleyi
commented on July 27, 2024
咦，奇怪，怎么感觉和上一次看到的完全不一样…
不管这些了。
问题是在我的了解里， Python 并未引入标记清除，只是在使用引用计数和分代回收相配合。
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wen-fei
commented on July 27, 2024
标准的Cpython确实只提了你说的那两个，我又仔细查了一下，理解是这样的：分代回收需要标记清除配合。
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xxleyi
commented on July 27, 2024
分代回收中的标记清除应该不是通常的标记清除垃圾回收算法吧？但我确实也不确定，只是觉得这样有点太迂回。
之后有机会再详细了解下。
多谢耐心回复~
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