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51 lines
1.3 KiB
Markdown
51 lines
1.3 KiB
Markdown
# IAllocator::GetTotalAllocated
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```cpp
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virtual size_t GetTotalAllocated() const = 0;
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```
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返回此分配器自创建以来累计分配的字节总数。这是一个只读查询操作，不会修改任何内部状态。
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**参数：** 无
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**返回：** 累计已分配的字节数
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**复杂度：** O(1)
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**示例：**
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```cpp
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#include <XCEngine/Memory/Allocator.h>
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class MyAllocator : public IAllocator {
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size_t m_allocated = 0;
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public:
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void* Allocate(size_t size, size_t alignment = 0) override {
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void* ptr = ::operator new(size);
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m_allocated += size;
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return ptr;
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}
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void Free(void* ptr) override {
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if (ptr) ::operator delete(ptr);
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}
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void* Reallocate(void* ptr, size_t newSize) override { /* ... */ }
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size_t GetTotalAllocated() const override { return m_allocated; }
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size_t GetTotalFreed() const override { return 0; }
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size_t GetPeakAllocated() const override { return m_allocated; }
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size_t GetAllocationCount() const override { return 0; }
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const char* GetName() const override { return "MyAllocator"; }
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};
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MyAllocator alloc;
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alloc.Allocate(100);
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alloc.Allocate(200);
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size_t total = alloc.GetTotalAllocated(); // 返回 300
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```
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## 相关文档
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- [IAllocator 总览](allocator.md) - 返回类总览
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