将本机指针存储在Java对象中的“正确”方法是什么？ [英] What is the 'correct' way to store a native pointer inside a Java object?

问题描述

将原生指针存储在Java对象中的正确方法是什么？

What is the 'correct' way to store a native pointer inside a Java object?

我可以将指针视为Java int ，如果我碰巧知道原生指针的大小是< = 32位，或者Java long ，如果我碰巧知道原生指针是< = 64位的大小。但有更好或更清晰的方法吗？

I could treat the pointer as a Java int, if I happen to know that native pointers are <= 32 bits in size, or a Java long if I happen to know that native pointers are <= 64 bits in size. But is there a better or cleaner way to do this?

编辑：从JNI函数返回本机指针正是我不要想做。我宁愿返回一个代表本机资源的Java对象。但是，我返回的Java对象大概必须有一个包含指针的字段，这会让我回到原来的问题。

Edit: Returning a native pointer from a JNI function is exactly what I don't want to do. I would rather return a Java object that represents the native resource. However, the Java object that I return must presumably have a field containing a pointer, which brings me back to the original question.

或者，还有更好的方法用于返回对本机资源的引用的JNI函数？

Or, alternatively, is there some better way for a JNI function to return a reference to a native resource?

推荐答案

IIRC， java.util .zip 和 java.nio 只需使用 long 。

IIRC, both java.util.zip and java.nio just use long.

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