ActionScript - 用于内存管理的原始/非原始对象之间的区别? [英] ActionScript - Difference Between Primitive / Non-Primitive Objects for Memory Management?

问题描述

我的理解是类的原始类型(uint、string、Number 等)不需要为垃圾收集设置为 null.

my understanding is that primitive types (uint, string, Number, etc.) of a class do not need to be set to null for garbage collection.

例如，我不需要在以下类中编写此 dispose() 方法:

for example, i am not required to write this dispose() method in the following class:

package
{
//Imports
import flash.display.Shape;

//Class
public class DrawSquare extends Shape
    {
    //Properties
    private var squareColorProperty:uint;

    //Constructor
    public function DrawSquare(squareColor:uint)
        {
        squareColorProperty = squareColor;

        init();
        }

    //Initialize
    private function init():void
        {
        graphics.beginFill(shapeColorProperty);
        graphics.drawRect(0, 0, 200, 200);
        graphics.endFill();
        }

    //Dispose
    public function dispose():void
        {
        squareColorProperty = null;
        }

    //Get Shape Color
    public function get squareColor():uint;
        {
        return squareColorProperty;
        }
    }
}

如果这是真的，我相信是这样，原始类型的对象和非原始类型的对象在内存分配方面有什么区别?

if this is true, which i believe it is, what is the difference between objects of primitive types and objects of non primitive types concerning memory allocation?

推荐答案

据我所知，关于flash player VM中GC逻辑最完整详细的解释位于Alex Harui 的博客，写于 2007 年.直接链接:GCAtomic.ppt.

As far as I know, the most complete and detailed explanation of GC logics in flash player VM is located in the blog of Alex Harui, written back in 2007. Direct link: GCAtomic.ppt.

Grant Skinner 提供了一些关于 GC 的有用提示.

GC 逻辑处理引用和引用计数.并且由于您无法在 ActionScript 中获得对原语的引用，因此您在这方面对 GC 无能为力.

GC logic deals with references and reference counting. And since you can not obtain a reference to a primitive in ActionScript, you can do nothing about GC in this aspect.

编辑 刚刚想起另一篇 关于GC 和资源管理，作者:Grant Skinner.

EDIT Just remembered another nice set of articles on GC and resource management by Grant Skinner.

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