> This page is for version 4.5.
> For other versions, use one of these documentation indexes:
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> - ltsb-2.0: https://docs.nvidia.com/holoscan/sdk-user-guide/ltsb-2-0/llms.txt
> - 4.5: https://docs.nvidia.com/holoscan/sdk-user-guide/4-5/llms.txt
> - 4.4: https://docs.nvidia.com/holoscan/sdk-user-guide/4-4/llms.txt
> - 4.3: https://docs.nvidia.com/holoscan/sdk-user-guide/4-3/llms.txt
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# holoscan::detail::cached_tid_init_flag

```cpp showLineNumbers={false}
std::once_flag & holoscan::detail::cached_tid_init_flag()
```