# gated

> **Function** in `langgraph`

📖 [View in docs](https://reference.langchain.com/python/langgraph/pregel/_executor/gated)

A coroutine that waits for a semaphore before running another coroutine.

## Signature

```python
gated(
    semaphore: asyncio.Semaphore,
    coro: Coroutine[None, None, T],
) -> T
```

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[View source on GitHub](https://github.com/langchain-ai/langgraph/blob/95af6a00718588e7b7ce17310e8006d267896a77/libs/langgraph/langgraph/pregel/_executor.py#L214)