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809 B
809 B
PoolAllocator::Free
void Free(void* ptr) override;
将内存块归还到空闲链表中。如果 ptr 为 nullptr 则无效果。释放操作将块插入空闲链表头部。必须传入从此池分配的指针,传入外部指针会导致未定义行为。
参数:
ptr- 指向要释放的内存块
返回: 无
复杂度: O(1)
示例:
#include <XCEngine/Memory/PoolAllocator.h>
PoolAllocator pool(sizeof(int), 100);
void* block = pool.Allocate();
if (block) {
int* num = static_cast<int*>(block);
*num = 123;
pool.Free(block); // 归还到空闲链表
block = nullptr;
}
// 检查空闲块数量
size_t freeCount = pool.GetFreeBlockCount();
相关文档
- PoolAllocator 总览 - 返回类总览