Struct Capabilities 

pub struct Capabilities {
    pub max_version: RingVersion,
    pub max_submission_queue_size: u32,
    pub max_completion_queue_size: u32,
    pub supports_completion_event: bool,
    pub is_emulated: bool,
}

What the running system’s IoRing implementation supports, queried without creating a ring.

Fields

max_version: RingVersion

The highest IORING_VERSION the system supports.

max_submission_queue_size: u32

The largest submission queue a ring can request.

max_completion_queue_size: u32

The largest completion queue a ring can request.

supports_completion_event: bool

Whether SetIoRingCompletionEvent is available. Both crate::IoRing::completion_event and the thread-pool delivery path built on it refuse to construct without this.

is_emulated: bool

Whether the ring is emulated in user mode rather than backed by the kernel. A consumer reaching for this crate to maximize throughput needs to know when they are getting an emulation with no kernel benefit, so this is surfaced rather than hidden.

Trait Implementations

impl Clone for Capabilities

fn clone(&self) -> Capabilities

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Capabilities

impl Debug for Capabilities

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

Formats the value using the given formatter.

impl Eq for Capabilities

impl PartialEq for Capabilities

fn eq(&self, other: &Capabilities) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Capabilities