Struct io_uring::squeue::SubmissionQueue

pub struct SubmissionQueue { /* fields omitted */ }

An io_uring instance's submission queue. This contains all the I/O operations the application sends to the kernel.

Implementations

impl SubmissionQueue

pub fn need_wakeup(&self) -> bool

When is_setup_sqpoll is set, whether the kernel threads has gone to sleep and requires a system call to wake it up.

pub fn dropped(&self) -> u32

The number of invalid submission queue entries that have been encountered in the ring buffer.

pub fn cq_overflow(&self) -> bool

Returns true if the completion queue ring is overflown.

Requires the unstable feature.

pub fn capacity(&self) -> usize

Get the total number of entries in the submission queue ring buffer.

pub fn len(&self) -> usize

Get the number of submission queue events in the ring buffer.

pub fn is_empty(&self) -> bool

Returns true if the submission queue ring buffer is empty.

pub fn is_full(&self) -> bool

Returns true if the submission queue ring buffer has reached capacity, and no more events can be added before the kernel consumes some.

pub fn available(&mut self) -> AvailableQueue<'_>

Take a snapshot of the submission queue.