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

@@ -0,0 +1,37 @@
+# ProxyAllocator::Allocate
+
+```cpp
+void* Allocate(size_t size, size_t alignment = 0) override;
+```
+
+分配内存并记录统计。调用转发到底层分配器，同时递增分配计数和总分配字节数，并更新峰值记录。
+
+**参数：**
+- `size` - 请求的字节数
+- `alignment` - 内存对齐要求
+
+**返回：** 分配成功返回指针，失败返回 `nullptr`
+
+**复杂度：** O(1)（底层分配器复杂度 + 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(100);
+void* p2 = proxy.Allocate(200);
+void* p3 = proxy.Allocate(300, 16);
+
+const auto& stats = proxy.GetStats();
+printf("Total: %zu, Peak: %zu, Count: %zu\n",
+    stats.totalAllocated, stats.peakAllocated, stats.allocationCount);
+```
+
+## 相关文档
+
+- [ProxyAllocator 总览](proxy-allocator.md) - 返回类总览