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问题：Python垃圾收集器文档
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问题：Python垃圾收集器文档

我正在寻找详细描述python垃圾回收如何工作的文档。

我对在哪个步骤中完成操作很感兴趣。这三个集合中有哪些对象？在每个步骤中删除哪些对象？参考循环使用什么算法？

背景：我正在实施一些必须在短时间内完成的搜索。当垃圾收集器开始收集最旧的一代时，它比其他情况“慢很多”。它花费了比计划搜索更多的时间。我正在寻找如何预测何时收集最古老的一代以及需要多长时间。

很容易预测何时使用get_count()和收集最老的一代get_threshold()。也可以使用进行操纵set_threshold()。但是我看不出collect()用武力做出更好的决定或等待预定的收集会多么容易。

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I’m looking for documents that describes in details how python garbage collection works.

I’m interested what is done in which step. What objects are in these 3 collections? What kinds of objects are deleted in each step? What algorithm is used for reference cycles finding?

Background: I’m implementing some searches that have to finish in small amount of time. When the garbage collector starts collecting the oldest generation, it is “much” slower than in other cases. It took more time than it is intended for searches. I’m looking how to predict when it will collect oldest generation and how long it will take.

It is easy to predict when it will collect oldest generation with get_count() and get_threshold(). That also can be manipulated with set_threshold(). But I don’t see how easy to decide is it better to make collect() by force or wait for scheduled collection.

回答 0

没有关于Python如何进行垃圾收集的明确资源（除了源代码本身），但是这3个链接应该给您一个很好的主意。

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来源实际上很有帮助。从中获得多少取决于您对C的理解程度，但是注释实际上非常有帮助。跳到该collect()功能，注释会很好地解释该过程（尽管在技术上非常严格）。

点击查看英文原文

There’s no definitive resource on how Python does its garbage collection (other than the source code itself), but those 3 links should give you a pretty good idea.

Update

The source is actually pretty helpful. How much you get out of it depends on how well you read C, but the comments are actually very helpful. Skip down to the collect() function and the comments explain the process well (albeit in very technical terms).

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