Struct io_uring::cqueue::Entry

#[repr(C)]
pub struct Entry(_);

A 16-byte completion queue entry (CQE), representing a complete I/O operation.

Implementations

impl Entry

pub fn result(&self) -> i32

The operation-specific result code. For example, for a Read operation this is equivalent to the return value of the read(2) system call.

Examples found in repository

src/cqueue.rs (line 243)

    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_struct("Entry")
            .field("result", &self.result())
            .field("user_data", &self.user_data())
            .field("flags", &self.flags())
            .finish()
    }

pub fn user_data(&self) -> u64

The user data of the request, as set by Entry::user_data on the submission queue event.

Examples found in repository

src/cqueue.rs (line 244)

    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_struct("Entry")
            .field("result", &self.result())
            .field("user_data", &self.user_data())
            .field("flags", &self.flags())
            .finish()
    }

pub fn flags(&self) -> u32

Metadata related to the operation.

This is currently used for:

• Storing the selected buffer ID, if one was selected. See BUFFER_SELECT for more info.

Examples found in repository

src/cqueue.rs (line 245)

    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_struct("Entry")
            .field("result", &self.result())
            .field("user_data", &self.user_data())
            .field("flags", &self.flags())
            .finish()
    }

Trait Implementations

impl Clone for Entry

fn clone(&self) -> Entry

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Entry

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

Formats the value using the given formatter.

impl From<Entry32> for Entry

fn from(entry32: Entry32) -> Self

Converts to this type from the input type.

impl EntryMarker for Entry