Struct io_uring::cqueue::Entry32

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#[repr(C)]
pub struct Entry32(_, _);

Expand description

A 32-byte completion queue entry (CQE), representing a complete I/O operation.

Implementations§

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impl Entry32

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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 297)

    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_struct("Entry32")
            .field("result", &self.result())
            .field("user_data", &self.user_data())
            .field("flags", &self.flags())
            .field("big_cqe", &self.big_cqe())
            .finish()
    }

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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 298)

    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_struct("Entry32")
            .field("result", &self.result())
            .field("user_data", &self.user_data())
            .field("flags", &self.flags())
            .field("big_cqe", &self.big_cqe())
            .finish()
    }

source

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 299)

    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_struct("Entry32")
            .field("result", &self.result())
            .field("user_data", &self.user_data())
            .field("flags", &self.flags())
            .field("big_cqe", &self.big_cqe())
            .finish()
    }

source

pub fn big_cqe(&self) -> &[u64; 2]

Additional data available in 32-byte completion queue entries (CQEs).

Examples found in repository ?

src/cqueue.rs (line 300)

    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_struct("Entry32")
            .field("result", &self.result())
            .field("user_data", &self.user_data())
            .field("flags", &self.flags())
            .field("big_cqe", &self.big_cqe())
            .finish()
    }