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# os_activity_apply

Execute a block using a given activity object.

```
extern void os_activity_apply(os_activity_t activity, os_block_t block);
```

## Parameters

`activity`

An activity object. You can alternatively pass one of the global activity constants, such as [`OS_ACTIVITY_NONE`](/documentation/os/OS_ACTIVITY_NONE) or [`OS_ACTIVITY_CURRENT`](/documentation/os/OS_ACTIVITY_CURRENT).

`block`

The block to be executed within the context of the given activity.

## Discussion

---

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