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Hui-s-notebook/logseq-java/pages/对象头.md
2024-02-02 00:12:49 +08:00

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- 对象头
- Mark World
- 无锁态
- 轻量级锁
- 重量级锁
- GC标记
- 偏向锁
- KlassPoint内存指针指向元空间中类加载信息
id:: 652d22a1-04a9-44fd-a7ba-e0d0ca839c70
- 压缩4bit关闭压缩8bit
- 数组长度
- 4字节只有数组对象才有
- 实例数据 instance data
- 对齐填充 padding
- 保证每个对象都是8byte的整数倍