pub fn read_event(&self) -> Result<Option<Event>> {
        let mut buf = [unsafe { std::mem::zeroed() }; 1];
        let mut iter = self.read(&mut buf)?;
        let event = iter.next().transpose()?;
        assert!(iter.next().is_none());
        Ok(event)
    }
/// Read an `Event` from the userfaultfd object.
///
/// If the `Uffd` object was created with `non_blocking` set to `false`, this will block until
/// an event is successfully read (returning `Some(event)`, or an error is returned.
///
/// If `non_blocking` was `true`, this will immediately return `None` if no event is ready to
/// read.
///
/// Note that while this method doesn't require a mutable reference to the `Uffd` object, it
/// does consume bytes (thread-safely) from the underlying file descriptor.
///
/// # Examples
///
/// ```rust
/// # use userfaultfd::{Uffd, Result};
/// fn read_event(uffd: &Uffd) -> Result<()> {
///     // Read a single event
///     match uffd.read_event()? {
///         Some(e) => {
///             // Do something with the event
///         },
///         None => {
///             // This was a non-blocking read and the descriptor was not ready for read
///         },
///     }
///     Ok(())
/// }
/// ```
Read an `Event` from the userfaultfd object.



Note that while this method doesn't require a mutable reference to the `Uffd` object, it
does consume bytes (thread-safely) from the underlying file descriptor.
Read an ` Event ` from the userfaultfd object . Note that while this method doesn ' t require a mutable reference to the ` Uffd ` object it does consume bytes ( thread - safely ) from the underlying file descriptor .
pub fn read_event(&self) -> Result<Option<Event>> {
        let mut buf = [unsafe { std::mem::zeroed() }; 1];
        let mut iter = self.read(&mut buf)?;
        let event = iter.next().transpose()?;
        assert!(iter.next().is_none());
        Ok(event)
    }
pub fn read_event ( & self ) -> Result < Option < Event > > { let mut buf = [ unsafe { std :: mem :: zeroed ( ) } ; 1 ] ; let mut iter = self . read ( & mut buf ) ? ; let event = iter . next ( ) . transpose ( ) ? ; assert ! ( iter next ( ) is_none ( ) ) ; Ok ( event ) }
Read an `Event` from the userfaultfd object.
Read an ` Event ` from the userfaultfd object .
&self
examples
None
use userfaultfd::{uffd, result};
fn read_event(uffd: &Uffd) -> Result<()> {
Read a single event
match uffd.read_event(). {
Some(e) => {
Do something with the event
},
None => {
This was a non-blocking read and the descriptor was not ready for read
},
}
Ok(())
}
```
fn read_event ( uffd : &Uffd ) - > Result< () > { Read a single event match uffd . read_event () . { Some ( e ) = > { Do something with the event } None = > { This was a non - blocking read and the descriptor was not ready for read } } Ok (( )) } ` ` `