Struct UdevBackend

pub struct UdevBackend { /* private fields */ }

Backend to monitor available drm devices.

Provides a way to automatically scan for available gpus and notifies the given handler of any changes. Can be used to provide hot-plug functionality for gpus and attached monitors.

Implementations

impl UdevBackend

pub fn new<L, S: AsRef<str>>(seat: S, logger: L) -> IoResult<UdevBackend>

where L: Into<Option<Logger>>,

Creates a new UdevBackend

Arguments

seat - system seat which should be bound logger - slog Logger to be used by the backend and its DrmDevices.

pub fn device_list(&self) -> impl Iterator<Item = (dev_t, &Path)>

Get a list of DRM devices currently known to the backend

You should call this once before inserting the event source into your event loop, to get an initial snapshot of the device state.

Trait Implementations

impl AsRawFd for UdevBackend

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor.

impl Debug for UdevBackend

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl EventSource for UdevBackend

type Event = UdevEvent

The type of events generated by your source.

type Metadata = ()

Some metadata of your event source

type Ret = ()

The return type of the user callback

fn process_events<F>( &mut self, _: Readiness, token: Token, callback: F, ) -> Result<PostAction>

where F: FnMut(UdevEvent, &mut ()),

Process any relevant events

fn register( &mut self, poll: &mut Poll, factory: &mut TokenFactory, ) -> Result<()>

Register yourself to this poll instance

fn reregister( &mut self, poll: &mut Poll, factory: &mut TokenFactory, ) -> Result<()>

Re-register your file descriptors

fn unregister(&mut self, poll: &mut Poll) -> Result<()>

Unregister your file descriptors