41 lines
889 B
Markdown
41 lines
889 B
Markdown
|
# IAllocator::Free
|
|||
|
|
|
|||
|
|
```cpp
|
|||
|
|
virtual void Free(void* ptr) = 0;
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
释放之前通过 `Allocate` 分配的内存块。如果 `ptr` 为 `nullptr`，则此调用无效果。部分分配器（如 LinearAllocator）可能不支持此操作。
|
|||
|
|
|
|||
|
|
**参数：**
|
|||
|
|
- `ptr` - 指向要释放内存块的指针
|
|||
|
|
|
|||
|
|
**返回：** 无
|
|||
|
|
|
|||
|
|
**复杂度：** O(1)（固定块释放）或 O(n)（需要搜索）
|
|||
|
|
|
|||
|
|
**示例：**
|
|||
|
|
|
|||
|
|
```cpp
|
|||
|
|
#include <XCEngine/Memory/IAllocator.h>
|
|||
|
|
|
|||
|
|
class MyAllocator : public IAllocator {
|
|||
|
|
public:
|
|||
|
|
void* Allocate(size_t size, size_t alignment = 0) override {
|
|||
|
|
return ::operator new(size);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
void Free(void* ptr) override {
|
|||
|
|
if (ptr) ::operator delete(ptr);
|
|||
|
|
}
|
|||
|
|
// ... 其他方法实现
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
MyAllocator alloc;
|
|||
|
|
void* ptr = alloc.Allocate(512);
|
|||
|
|
alloc.Free(ptr); // 释放内存
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
## 相关文档
|
|||
|
|
|
|||
|
|
- [IAllocator 总览](allocator.md) - 返回类总览
|