41 lines
750 B
Markdown
41 lines
750 B
Markdown
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# PoolAllocator::GetFreeBlockCount
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```cpp
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size_t GetFreeBlockCount() const;
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```
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返回当前空闲块的的数量。每次 `Allocate` 成功后减 1，每次 `Free` 后加 1。
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**参数：** 无
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**返回：** 当前可分配的空闲块数量
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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/PoolAllocator.h>
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PoolAllocator pool(sizeof(int), 100);
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size_t initial = pool.GetFreeBlockCount(); // 100
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void* blocks[10];
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for (int i = 0; i < 10; ++i) {
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blocks[i] = pool.Allocate();
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}
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size_t after = pool.GetFreeBlockCount(); // 90
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for (int i = 0; i < 5; ++i) {
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pool.Free(blocks[i]);
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}
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size_t final = pool.GetFreeBlockCount(); // 95
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```
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## 相关文档
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- [PoolAllocator 总览](pool-allocator.md) - 返回类总览
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