XCEngine/docs/api/memory/pool-allocator/get-total-allocated.md

PoolAllocator::GetTotalAllocated

size_t GetTotalAllocated() const override;

返回当前已分配的内存总量（字节）。计算公式：(m_totalBlocks - m_freeBlocks) * m_blockSize。

参数： 无

返回： 当前已分配块的字节数

复杂度： O(1)

示例：

#include <XCEngine/Memory/PoolAllocator.h>

PoolAllocator pool(sizeof(int), 100);

size_t allocated = pool.GetTotalAllocated(); // 0

void* block = pool.Allocate();
allocated = pool.GetTotalAllocated(); // sizeof(int)

pool.Free(block);
allocated = pool.GetTotalAllocated(); // 0

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