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docs/api/memory/allocator/free.md

@@ -0,0 +1,40 @@
+# 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/Allocator.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