33 lines
662 B
Markdown
33 lines
662 B
Markdown
|
# PoolAllocator::GetTotalFreed
|
||
|
|
|
||
|
|
```cpp
|
||
|
|
size_t GetTotalFreed() const override;
|
||
|
|
```
|
||
|
|
|
||
|
|
返回当前空闲的内存总量（字节）。计算公式：`m_freeBlocks * m_blockSize`。
|
||
|
|
|
||
|
|
**参数：** 无
|
||
|
|
|
||
|
|
**返回：** 当前空闲块的字节数
|
||
|
|
|
||
|
|
**复杂度：** O(1)
|
||
|
|
|
||
|
|
**示例：**
|
||
|
|
|
||
|
|
```cpp
|
||
|
|
#include <XCEngine/Memory/PoolAllocator.h>
|
||
|
|
|
||
|
|
PoolAllocator pool(sizeof(int), 100);
|
||
|
|
|
||
|
|
size_t freed = pool.GetTotalFreed(); // 100 * sizeof(int)
|
||
|
|
|
||
|
|
void* block = pool.Allocate();
|
||
|
|
freed = pool.GetTotalFreed(); // 99 * sizeof(int)
|
||
|
|
|
||
|
|
pool.Free(block);
|
||
|
|
freed = pool.GetTotalFreed(); // 100 * sizeof(int)
|
||
|
|
```
|
||
|
|
|
||
|
|
## 相关文档
|
||
|
|
|
||
|
|
- [PoolAllocator 总览](pool-allocator.md) - 返回类总览
|