java - JVM 崩溃报告中的 oop 是什么意思？

Question

我有一个 JVM 崩溃报告，其中有几行是 R13=0x00000007a22ba2fc is an oop
什么是 oop？它是一个对象吗？

Answer 1

简而言之:根据 official documentation 的普通对象指针Java 开发工具包。

An object pointer. Specifically, a pointer into the GC-managed heap. (The term is traditional. One 'o' may stand for 'ordinary'.) Implemented as a native machine address, not a handle. Oops may be directly manipulated by compiled or interpreted Java code, because the GC knows about the liveness and location of oops within such code. (See GC map.) Oops can also be directly manipulated by short spans of C/C++ code, but must be kept by such code within handles across every safepoint.