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# DispatchSourceMachSend

A dispatch source that monitors a Mach port for dead name notifications, indicating that a send right no longer has a corresponding receive right.

```
protocol DispatchSourceMachSend : DispatchSourceProtocol, Sendable
```

## Overview

You do not adopt this protocol in your objects. Instead, use the [`makeMachSendSource(port:eventMask:queue:)`](/documentation/Dispatch/DispatchSource/makeMachSendSource(port:eventMask:queue:)) method to create an object that adopts this protocol.

## Topics

### Getting the Mach Port Handle

[`handle`](/documentation/Dispatch/DispatchSourceMachSend/handle)

### Getting the Event Data

[`data`](/documentation/Dispatch/DispatchSourceMachSend/data)

[`mask`](/documentation/Dispatch/DispatchSourceMachSend/mask)


---

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