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1.3 KiB
1.3 KiB
IAllocator::GetTotalFreed
virtual size_t GetTotalFreed() const = 0;
返回此分配器自创建以来累计释放的字节总数。部分分配器(如 LinearAllocator)可能始终返回 0,因为它们不跟踪单个释放操作。
参数: 无
返回: 累计已释放的字节数
复杂度: O(1)
示例:
#include <XCEngine/Memory/Allocator.h>
class MyAllocator : public IAllocator {
size_t m_freed = 0;
public:
void* Allocate(size_t size, size_t alignment = 0) override { return ::operator new(size); }
void Free(void* ptr) override {
if (ptr) {
size_t size = 256; // 需要外部记录
::operator delete(ptr);
m_freed += size;
}
}
void* Reallocate(void* ptr, size_t newSize) override { /* ... */ }
size_t GetTotalAllocated() const override { return 0; }
size_t GetTotalFreed() const override { return m_freed; }
size_t GetPeakAllocated() const override { return 0; }
size_t GetAllocationCount() const override { return 0; }
const char* GetName() const override { return "MyAllocator"; }
};
MyAllocator alloc;
void* ptr = alloc.Allocate(128);
alloc.Free(ptr);
size_t freed = alloc.GetTotalFreed(); // 返回 128
相关文档
- IAllocator 总览 - 返回类总览