Enum async_ffi::FfiPoll

#[repr(C, u8)]
pub enum FfiPoll<T> {
    Ready(T),
    Pending,
    Panicked,
}

The FFI compatible std::task::Poll

Variants

Ready(T)

Represents that a value is immediately ready.

Pending

Represents that a value is not ready yet.

Panicked

Represents that the future panicked

Implementations

impl<T> FfiPoll<T>

pub fn from_poll(poll: Poll<T>) -> Self

Converts a std::task::Poll to the FfiPoll.

pub fn try_into_poll(self) -> Result<Poll<T>, PollPanicked>

Try to convert a FfiPoll back to the std::task::Poll.

Errors

Returns Err(PollPanicked) if the result indicates the poll function panicked.

Trait Implementations

impl<T> From<Poll<T>> for FfiPoll<T>

fn from(poll: Poll<T>) -> Self

Converts to this type from the input type.

impl<T> GetStaticEquivalent_ for FfiPoll<T>where T: __StableAbi,

type StaticEquivalent = _static_FfiPoll<<T as GetStaticEquivalent_>::StaticEquivalent>

The 'static equivalent of Self

impl<T> StableAbi for FfiPoll<T>where T: __StableAbi,

type IsNonZeroType = False

Whether this type has a single invalid bit-pattern.

const LAYOUT: &'static TypeLayout = _

The layout of the type provided by implementors.

const ABI_CONSTS: AbiConsts = AbiConsts{ type_id: Constructor(crate::std_types::utypeid::new_utypeid::<Self::StaticEquivalent>), is_nonzero: <Self::IsNonZeroType as Boolean>::VALUE,}

const-equivalents of the associated types.

impl<T> TryFrom<FfiPoll<T>> for Poll<T>

type Error = PollPanicked

The type returned in the event of a conversion error.

fn try_from(ffi_poll: FfiPoll<T>) -> Result<Self, PollPanicked>

Performs the conversion.