如何使用Java为进程打印堆的位置? [英] How to print the location of Heap using java for a process?

问题描述

我想测试为进程随机分配堆位置的ASLR是否有效.

I want to test if ASLR which randomizes the location of a heap for a process actually works.

推荐答案

您不能在纯Java中做到这一点.

You can't do this in pure Java.

• 机器地址(指针)未公开给Java应用程序.

• Machine address (pointers) are not exposed to Java applications.

即使这样做，也没有Java API可以告诉您堆是什么.

Even if they did, there's no Java API that tells you were the heap is.

我想您可以将System.identityHashcode()返回的值用作ersatz机器地址.如果编写了一个简单的Java测试应用程序来检查示例对象的身份哈希码，然后在启用和禁用ASLR的情况下多次运行它，则可能会发现可预测性有所不同.

I suppose that you could use the values returned by System.identityHashcode() as ersatz machine addresses. If you wrote a simple Java test application that examined identity hashcode of a sample object, then ran it multiple times with ASLR enabled and disabled, you might observe a difference in predictability.

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