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XCSDD/docs/api/memory/manager/create-linear-allocator.md
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# MemoryManager::CreateLinearAllocator
```cpp
std::unique_ptr<LinearAllocator> CreateLinearAllocator(size_t size);
```
创建并返回一个新的 LinearAllocator 实例,使用系统分配器作为底层。返回的 `unique_ptr` 管理分配器生命周期。
**参数:**
- `size` - 分配器缓冲区大小(字节)
**返回:** LinearAllocator 的 unique_ptr
**复杂度:** O(1)
**示例:**
```cpp
#include <XCEngine/Memory/MemoryManager.h>
auto linear = MemoryManager::Get().CreateLinearAllocator(1024 * 1024);
void* ptr = linear->Allocate(256);
void* marker = linear->GetMarker();
linear->Allocate(128);
linear->SetMarker(marker);
linear->Clear();
```
## 相关文档
- [MemoryManager 总览](manager.md) - 返回类总览
- [LinearAllocator](../linear-allocator/linear-allocator.md) - 线性分配器