---
title: DispatchSourceSignal
framework: dispatch
role: symbol
role_heading: Protocol
path: dispatch/dispatchsourcesignal
---

# DispatchSourceSignal

A dispatch source that monitors the current process for UNIX signals.

## Declaration

```swift
protocol DispatchSourceSignal : DispatchSourceProtocol, Sendable
```

## Overview

Overview You do not adopt this protocol in your objects. Instead, use the makeSignalSource(signal:queue:) method to create an object that adopts this protocol.

## Relationships

### Inherits From

- [DispatchSourceProtocol](dispatch/dispatchsourceprotocol.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

### Conforming Types

- [DispatchSource](dispatch/dispatchsource.md)

## See Also

### Creating a Signal Source

- [makeSignalSource(signal:queue:)](dispatch/dispatchsource/makesignalsource(signal:queue:).md)