完成期间对对象的引用

2022-01-16 00:00:00 garbage-collection java finalizer

如果在 finalize 调用期间保存对当前对象的引用会发生什么?例如:

What happens if you save a reference to the current object during the finalize call? For example:

class foo {
    ...
    public void finalize() {
        bar.REFERENCE = this;
    }
}

对象是否被垃圾回收?当您稍后尝试访问 bar.REFERENCE 时会发生什么?

Is the object garbage-collected, or not? What happens when you try to access bar.REFERENCE later?

推荐答案

对象没有被垃圾回收.这被称为对象复活".

The object is not garbage collected. This is know as "Object resurrection".

您必须小心，一旦调用终结器，gc 就不会再次调用它，在 .NET 等某些环境中，您可以重新注册终结器，但我不确定 java

You must be careful with that, once the finalizer is called the gc won't call it again, on some enviroments like .NET you can re-register the finalizer but i'm not sure about java

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