# PRLock

A mutual exclusion lock.

## Syntax

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

typedef struct PRLock PRLock;
```

## Description

NSPR represents a lock as an opaque entity to clients of the functions
described in ["Locks"](en/NSPR_API_Reference/Locks). Functions that
operate on locks do not have timeouts and are not interruptible.