Symbian sdk帮助-堆结构                译文作者: Leefj   译文版本:1.0   译文时间:2005-12-9

Structure of a heap

堆结构

A heap simply consists of two lists of cells; one is the list of allocated cells and the other the list of free cells. Each list is anchored in the heap object.

堆只是简单的包含了两个内存单元列表；一个是已经分配出去的内存单元列表；另外一个是空闲的内存单元列表。两个列表够固着于Heap对象。

A cell consists of a cell header followed by the body of the cell itself. The body of the cell is the area of memory which is considered allocated.

内存单元包括一个跟随在单元体后的单元句柄。单元体可以认为是已经分配出去的内存区。

The cell header is a struct of type RHeap::SCell defined as part of the RHeap class in e32std.h.

单元头是一个在RHeap类中定义的 RHeap::SCell 结构体。

The following diagram shows a typical mix of free and allocated cells.

下图是一个空闲单元和已分配单元混合在一起的示意图：