无限循环中创建的对象的垃圾回收 [英] Garbage collection of the object created in infinite loop

问题描述

我有一个非常基本的问题.

I have a very basic question.

我这样写一个循环:

while(true)
{
   MyTestClass myObject = new MyTestClass();
}

1. 何时在中创建对象循环中，垃圾被收集了吗?
2. 也是，每次迭代都是新的内存位置是分配给myObject引用?
3. 如果我在每次迭代结束时都写 myObject = null; ，该怎么办?

1. When will be the object created in the loop, garbage collected?
2. Also, for every iteration, is it that the new memory location is allocated to the myObject reference?
3. What if i write myObject = null; at the end of every iteration?

推荐答案

坦率地说，只要GC有这种感觉，该变量从不读取，因此始终符合条件
1. myObject 是变量-在堆栈上具有固定位置以供参考；但是，每个 new MyTestClass()是一个不同的 object ，它们在可用堆空间中的某个位置创建；每次都不同
2. 没有任何区别；严格来说，存在一些复杂性，涉及变量的实际声明点(在IL中)以及 while 的实际实现方式-但这仅在退出循环后才会显示.而且由于您在每次迭代时都会立即分配它，所以这里没有有形差异

1. whenever GC feels like it, frankly; the variable is never read, so it is always eligible
2. myObject is the variable - that has a fixed position on the stack for the reference; however, each new MyTestClass() is a different object, created somewhere in the available heap space; different each time
3. no difference whatsoever; strictly speaking there are some complexities involving the actual declaration point of the variable (in IL) and how while is actually implemented - but that would only show after exiting the loop. And since on each iteration you immediately allocate it, there is no tangible difference here

这篇关于无限循环中创建的对象的垃圾回收的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！