# PoolAllocator::GetTotalAllocated

```cpp
size_t GetTotalAllocated() const override;
```

返回当前已分配的内存总量（字节）。计算公式：`(m_totalBlocks - m_freeBlocks) * m_blockSize`。

**参数：** 无

**返回：** 当前已分配块的字节数

**复杂度：** O(1)

**示例：**

```cpp
#include <XCEngine/Memory/PoolAllocator.h>

PoolAllocator pool(sizeof(int), 100);

size_t allocated = pool.GetTotalAllocated(); // 0

void* block = pool.Allocate();
allocated = pool.GetTotalAllocated(); // sizeof(int)

pool.Free(block);
allocated = pool.GetTotalAllocated(); // 0
```

## 相关文档

- [PoolAllocator 总览](pool-allocator.md) - 返回类总览