# IAllocator::GetAllocationCount

```cpp
virtual size_t GetAllocationCount() const = 0;
```

返回当前处于已分配状态（未释放）的内存块数量。此方法用于监控活跃分配的数量。

**参数：** 无

**返回：** 当前已分配块的数量

**复杂度：** O(1)

**示例：**

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

class MyAllocator : public IAllocator {
    size_t m_count = 0;
public:
    void* Allocate(size_t size, size_t alignment = 0) override {
        ++m_count;
        return ::operator new(size);
    }
    
    void Free(void* ptr) override {
        if (ptr) {
            --m_count;
            ::operator delete(ptr);
        }
    }
    
    void* Reallocate(void* ptr, size_t newSize) override { /* ... */ }
    
    size_t GetTotalAllocated() const override { return 0; }
    size_t GetTotalFreed() const override { return 0; }
    size_t GetPeakAllocated() const override { return 0; }
    size_t GetAllocationCount() const override { return m_count; }
    const char* GetName() const override { return "MyAllocator"; }
};

MyAllocator alloc;
alloc.Allocate(64);
alloc.Allocate(128);
size_t count = alloc.GetAllocationCount(); // 返回 2
```

## 相关文档

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