Enum Decision 

#[non_exhaustive]
pub enum Decision {
    Completed(usize),
    Wait(SmallVec<[WaitArg; 1]>),
    Blocking,
}

Result of OpCode::pre_submit.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Completed(usize)

Instant operation, no need to submit

Wait(SmallVec<[WaitArg; 1]>)

Async operation, needs to submit

Blocking

Blocking operation, needs to be spawned in another thread

Implementations

impl Decision

pub fn wait_for(fd: i32, interest: Interest) -> Decision

Decide to wait for the given fd with the given interest.

pub fn wait_for_many<I>(args: I) -> Decision

where I: IntoIterator<Item = WaitArg>,

Decide to wait for many fds.

pub fn wait_readable(fd: i32) -> Decision

Decide to wait for the given fd to be readable.

pub fn wait_writable(fd: i32) -> Decision

Decide to wait for the given fd to be writable.