Struct recvmsg::Empty

pub struct Empty<AddrBuf = ()>(/* private fields */);

Dummy message stream that is at end-of-stream from the outset.

Implementations

impl<AddrBuf> Empty<AddrBuf>

pub fn new() -> Self

Creates a dummy message stream.

Trait Implementations

impl<AddrBuf: Clone> Clone for Empty<AddrBuf>

fn clone(&self) -> Empty<AddrBuf>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<AddrBuf: Debug> Debug for Empty<AddrBuf>

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

Formats the value using the given formatter.

impl<AddrBuf> Default for Empty<AddrBuf>

fn default() -> Self

Returns the “default value” for a type.

impl<AddrBuf: Hash> Hash for Empty<AddrBuf>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<AddrBuf: Ord> Ord for Empty<AddrBuf>

fn cmp(&self, other: &Empty<AddrBuf>) -> 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 + PartialOrd,

Restrict a value to a certain interval.

impl<AddrBuf: PartialEq> PartialEq for Empty<AddrBuf>

fn eq(&self, other: &Empty<AddrBuf>) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

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

impl<AddrBuf: PartialOrd> PartialOrd for Empty<AddrBuf>

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl<AddrBuf> RecvMsg for Empty<AddrBuf>

type Error = Infallible

The I/O error type.

type AddrBuf = AddrBuf

The buffer used for sender address reception.

fn poll_recv_msg( self: Pin<&mut Self>, _: &mut Context<'_>, _: &mut MsgBuf<'_>, _: Option<&mut AddrBuf> ) -> Poll<Result<RecvResult, Self::Error>>

Polls a future that receives one message using the given buffer, (re)allocating the buffer if necessary.

impl<AddrBuf> RecvMsg for Empty<AddrBuf>

type Error = Infallible

The I/O error type.

type AddrBuf = AddrBuf

The buffer used for sender address reception.

fn recv_msg( &mut self, _: &mut MsgBuf<'_>, _: Option<&mut AddrBuf> ) -> Result<RecvResult, Self::Error>

Receives one message using the given buffer, (re)allocating the buffer if necessary.

impl<AddrBuf> TruncatingRecvMsg for Empty<AddrBuf>

type Error = Infallible

The I/O error type.

type AddrBuf = AddrBuf

The buffer used for sender address reception.

fn recv_trunc( &mut self, _: bool, _: &mut MsgBuf<'_>, _: Option<&mut AddrBuf> ) -> Result<Option<bool>, Self::Error>

Receives one message into the given buffer, returning:

fn discard_msg(&mut self) -> Result<(), Self::Error>

Discards the message at the front of the queue. If at end-of-communication, succeeds with no effect.

impl<AddrBuf> TruncatingRecvMsg for Empty<AddrBuf>

type Error = Infallible

The I/O error type.

type AddrBuf = AddrBuf

The buffer used for sender address reception.

fn poll_recv_trunc( self: Pin<&mut Self>, _: &mut Context<'_>, _: bool, _: &mut MsgBuf<'_>, _: Option<&mut AddrBuf> ) -> Poll<Result<Option<bool>, Self::Error>>

Polls a future that receives one message into the given buffer, returning within Poll::Ready:

fn poll_discard_msg( self: Pin<&mut Self>, cx: &mut Context<'_> ) -> Poll<Result<(), Self::Error>>

Polls a future that discards the message at the front of the queue. If at end-of-communication, succeeds with no effect.

impl<AddrBuf> TruncatingRecvMsgWithFullSize for Empty<AddrBuf>

fn recv_trunc_with_full_size( &mut self, _: bool, _: &mut MsgBuf<'_>, _: Option<&mut AddrBuf> ) -> Result<TryRecvResult, Self::Error>

Like .recv_trunc(), but returns the true length of the message (size before truncation).

impl<AddrBuf> TruncatingRecvMsgWithFullSize for Empty<AddrBuf>

fn poll_recv_trunc_with_full_size( self: Pin<&mut Self>, _: &mut Context<'_>, _: bool, _: &mut MsgBuf<'_>, _: Option<&mut AddrBuf> ) -> Poll<Result<TryRecvResult, Self::Error>>

Like .poll_recv_trunc(), but returns the true length of the message (size before truncation).

impl<AddrBuf: Copy> Copy for Empty<AddrBuf>

impl<AddrBuf: Eq> Eq for Empty<AddrBuf>

impl<AddrBuf> StructuralEq for Empty<AddrBuf>

impl<AddrBuf> StructuralPartialEq for Empty<AddrBuf>