A nice property of thread-static fields is that once the managed thread goes away, they are no longer treated as GC roots.
线程静态字段具有一个很好的属性，即一旦托管线程消失，就不会再将它们视为gc根。
A nice property of thread-static fields is that once the managed thread goes away, they are no longer treated as GC roots.
线程静态字段具有一个很好的属性，即一旦托管线程消失，就不会再将它们视为gc根。
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