# PR_SetThreadPriority

Sets the priority of a specified thread.

## Syntax

```{code}
#include <prthread.h>

void PR_SetThreadPriority(
   PRThread *thread,
   PRThreadPriority priority);
```

### Parameters

{ref}`PR_SetThreadPriority` has the following parameters:

`thread`

: A valid identifier for the thread whose priority you want to set.

`priority`

: The priority you want to set.

## Description

Modifying the priority of a thread other than the calling thread is
risky. It is difficult to ensure that the state of the target thread
permits a priority adjustment without ill effects. It is preferable for
a thread to specify itself in the thread parameter when it calls
{ref}`PR_SetThreadPriority`.