SHALLOW HEAP和RETAINED HEAP

概念 SHALLOW HEAP：對象自身佔用的內存大小； Shallow heap of an object is its size in the memory. RETAINED HEAP：對象能夠被回收的內存大小，包括了直接引用和間接引用佔用的內存； Retained heap is the amount of memory that will be freed when the partic

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