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docs/api/memory/proxy-allocator/free.md

@@ -0,0 +1,42 @@
+# ProxyAllocator::Free
+
+```cpp
+void Free(void* ptr) override;
+```
+
+释放内存并记录统计。调用转发到底层分配器，同时更新统计信息：递增 `totalFreed`（累加当前 `allocationCount`），并递减 `allocationCount`。
+
+**注意：** `totalFreed` 累加的是每次释放时的 `allocationCount`（分配计数）而非实际字节大小。这是一个简化的实现，用于追踪释放操作次数。
+
+**参数：**
+- `ptr` - 指向要释放的内存块
+
+**返回：** 无
+
+**复杂度：** O(1)（底层释放 + 统计更新）
+
+**示例：**
+
+```cpp
+#include <XCEngine/Memory/MemoryManager.h>
+#include <XCEngine/Memory/ProxyAllocator.h>
+
+IAllocator* sysAlloc = MemoryManager::Get().GetSystemAllocator();
+ProxyAllocator proxy(sysAlloc, "TrackedAlloc");
+
+void* p1 = proxy.Allocate(512);
+void* p2 = proxy.Allocate(256);
+
+proxy.Free(p1);
+proxy.Free(p2);
+
+const auto& stats = proxy.GetStats();
+// totalFreed 累加了每次释放时的 allocationCount（次数，非字节）
+// allocationCount 最终为 0
+printf("Total allocated: %zu bytes, Freed count: %zu, Current count: %zu\n",
+    stats.totalAllocated, stats.totalFreed, stats.allocationCount);
+```
+
+## 相关文档
+
+- [ProxyAllocator 总览](proxy-allocator.md) - 返回类总览