Struct PollTimeout 

pub struct PollTimeout(/* private fields */);

Available on crate feature poll only.

PollTimeout argument for polling.

Implementations

impl PollTimeout

pub const NONE: Self

Blocks indefinitely.

Specifying a negative value in timeout means an infinite timeout.

pub const ZERO: Self

Returns immediately.

Specifying a timeout of zero causes poll() to return immediately, even if no file descriptors are ready.

pub const MAX: Self

Blocks for at most i32::MAX milliseconds.

pub fn is_none(&self) -> bool

Returns if self equals PollTimeout::NONE.

pub fn is_some(&self) -> bool

Returns if self does not equal PollTimeout::NONE.

pub fn as_millis(&self) -> Option<u32>

Returns the timeout in milliseconds if there is some, otherwise returns None.

pub fn duration(&self) -> Option<Duration>

Returns the timeout as a Duration if there is some, otherwise returns None.

Trait Implementations

impl Clone for PollTimeout

fn clone(&self) -> PollTimeout

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PollTimeout

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

Formats the value using the given formatter.

impl<T: Into<PollTimeout>> From<Option<T>> for PollTimeout

fn from(x: Option<T>) -> Self

Converts to this type from the input type.

impl From<PollTimeout> for i128

fn from(x: PollTimeout) -> Self

Converts to this type from the input type.

impl From<PollTimeout> for i32

fn from(x: PollTimeout) -> Self

Converts to this type from the input type.

impl From<PollTimeout> for i64

fn from(x: PollTimeout) -> Self

Converts to this type from the input type.

impl From<u16> for PollTimeout

fn from(x: u16) -> Self

Converts to this type from the input type.

impl From<u8> for PollTimeout

fn from(x: u8) -> Self

Converts to this type from the input type.

impl Ord for PollTimeout

fn cmp(&self, other: &PollTimeout) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for PollTimeout

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for PollTimeout

fn partial_cmp(&self, other: &PollTimeout) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl TryFrom<Duration> for PollTimeout

type Error = PollTimeoutTryFromError

The type returned in the event of a conversion error.

fn try_from(x: Duration) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<PollTimeout> for Duration

type Error = ()

The type returned in the event of a conversion error.

fn try_from(x: PollTimeout) -> Result<Self, ()>

Performs the conversion.

impl TryFrom<PollTimeout> for i16

type Error = <i16 as TryFrom<i32>>::Error

The type returned in the event of a conversion error.

fn try_from(x: PollTimeout) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<PollTimeout> for i8

type Error = <i8 as TryFrom<i32>>::Error

The type returned in the event of a conversion error.

fn try_from(x: PollTimeout) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<PollTimeout> for u128

type Error = <u128 as TryFrom<i32>>::Error

The type returned in the event of a conversion error.

fn try_from(x: PollTimeout) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<PollTimeout> for u16

type Error = <u16 as TryFrom<i32>>::Error

The type returned in the event of a conversion error.

fn try_from(x: PollTimeout) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<PollTimeout> for u32

type Error = <u32 as TryFrom<i32>>::Error

The type returned in the event of a conversion error.

fn try_from(x: PollTimeout) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<PollTimeout> for u64

type Error = <u64 as TryFrom<i32>>::Error

The type returned in the event of a conversion error.

fn try_from(x: PollTimeout) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<PollTimeout> for u8

type Error = <u8 as TryFrom<i32>>::Error

The type returned in the event of a conversion error.

fn try_from(x: PollTimeout) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<i128> for PollTimeout

type Error = PollTimeoutTryFromError

The type returned in the event of a conversion error.

fn try_from(x: i128) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<i16> for PollTimeout

type Error = PollTimeoutTryFromError

The type returned in the event of a conversion error.

fn try_from(x: i16) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<i32> for PollTimeout

type Error = PollTimeoutTryFromError

The type returned in the event of a conversion error.

fn try_from(x: i32) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<i64> for PollTimeout

type Error = PollTimeoutTryFromError

The type returned in the event of a conversion error.

fn try_from(x: i64) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<i8> for PollTimeout

type Error = PollTimeoutTryFromError

The type returned in the event of a conversion error.

fn try_from(x: i8) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<u128> for PollTimeout

type Error = PollTimeoutTryFromError

The type returned in the event of a conversion error.

fn try_from(x: u128) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<u32> for PollTimeout

type Error = PollTimeoutTryFromError

The type returned in the event of a conversion error.

fn try_from(x: u32) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<u64> for PollTimeout

type Error = PollTimeoutTryFromError

The type returned in the event of a conversion error.

fn try_from(x: u64) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for PollTimeout

impl Eq for PollTimeout

impl StructuralPartialEq for PollTimeout

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 4 bytes