docs: update memory and threading API docs

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2026-03-20 02:35:24 +08:00
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# MemoryManager::CreatePoolAllocator
```cpp
std::unique_ptr<PoolAllocator> CreatePoolAllocator(size_t blockSize, size_t count);
```
创建并返回一个新的 PoolAllocator 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:**
- `blockSize` - 每个内存块的大小(字节)
- `count` - 内存池中块的数量
**返回:** PoolAllocator 的 unique_ptr
**复杂度:** O(blockSize * count)(需要预分配所有块)
**示例:**
```cpp
#include <XCEngine/Memory/MemoryManager.h>
struct Particle {
float x, y, z;
float life;
};
auto pool = MemoryManager::Get().CreatePoolAllocator(sizeof(Particle), 1000);
void* block = pool->Allocate();
auto* p = new (block) Particle{1.0f, 2.0f, 3.0f, 5.0f};
p->~Particle();
pool->Free(block);
```
## 相关文档
- [MemoryManager 总览](memorymanager.md) - 返回类总览
- [PoolAllocator](../pool-allocator/pool-allocator.md) - 内存池分配器