Speading up field traversing by adding flag to klass-arkcompiler_runtime

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Speading up field traversing by adding flag to klass #7991

chikunov-danila创建于 2025年10月22日关闭于 2月14日

2025年10月22日创建

感谢提出新需求。

新需求提供了什么功能？

Traversing fields goes as follows: we take klass of object, from klass takes its fields, trverse it in while, and then takes base klass in cycle.
For some klasses there could be no reference fields. And we can speed up traversing by adding special flag to object, that will allow us to get if object and its ancestors dont have reference fields.

Example

class REF{ // Has no references
	public i: int = 0;
}

class A{ public i1: int = 0; } // Has no references
class B extends A{ public i2: int = 0; } // No ref
class C extends B{ public i3: int = 0; } // No ref
class D extends C{ // Has references
	public i5: int = 0;
	public ref:REF = new REF();
}
class E extends D{ public i5: int = 0; } // parent has reference
class LAST extends E{} // Ancestor has reference

let l = new LAST();
GC.startGC(GC.Cause.FULL); // It is OK to traverse up to D class and dont go futher

该需求带来的价值、应用场景？

C chikunov-danila

2025年10月22日添加了label：enhancement

openharmony_ci成员

2025年10月22日评论：

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