38 lines
1017 B
Markdown
38 lines
1017 B
Markdown
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# ProxyAllocator::Allocate
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```cpp
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void* Allocate(size_t size, size_t alignment = 0) override;
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```
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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。
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**参数：**
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- `size` - 请求的字节数
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- `alignment` - 内存对齐要求
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**返回：** 分配成功返回指针，失败返回 `nullptr`
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**复杂度：** O(1)（底层分配器复杂度 + 统计更新）
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**示例：**
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```cpp
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#include <XCEngine/Memory/MemoryManager.h>
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#include <XCEngine/Memory/ProxyAllocator.h>
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IAllocator* sysAlloc = MemoryManager::Get().GetSystemAllocator();
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ProxyAllocator proxy(sysAlloc, "TrackedAlloc");
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void* p1 = proxy.Allocate(100);
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void* p2 = proxy.Allocate(200);
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void* p3 = proxy.Allocate(300, 16);
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const auto& stats = proxy.GetStats();
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printf("Total: %zu, Peak: %zu, Count: %zu\n",
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stats.totalAllocated, stats.peakAllocated, stats.allocationCount);
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```
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## 相关文档
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- [ProxyAllocator 总览](proxy-allocator.md) - 返回类总览
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