[−][src]Struct nix::poll::PollFlags
These flags define the different events that can be monitored by poll
and ppoll
Implementations
impl PollFlags
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pub const POLLIN: PollFlags
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There is data to read.
pub const POLLPRI: PollFlags
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There is some exceptional condition on the file descriptor.
Possibilities include:
- There is out-of-band data on a TCP socket (see tcp(7)).
- A pseudoterminal master in packet mode has seen a state change on the slave (see ioctl_tty(2)).
- A cgroup.events file has been modified (see cgroups(7)).
pub const POLLOUT: PollFlags
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Writing is now possible, though a write larger that the
available space in a socket or pipe will still block (unless
O_NONBLOCK
is set).
pub const POLLRDNORM: PollFlags
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Equivalent to POLLIN
pub const POLLWRNORM: PollFlags
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Equivalent to POLLOUT
pub const POLLRDBAND: PollFlags
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Priority band data can be read (generally unused on Linux).
pub const POLLWRBAND: PollFlags
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Priority data may be written.
pub const POLLERR: PollFlags
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Error condition (only returned in
PollFd::revents
;
ignored in PollFd::new
).
This bit is also set for a file descriptor referring to the
write end of a pipe when the read end has been closed.
pub const POLLHUP: PollFlags
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Hang up (only returned in PollFd::revents
;
ignored in PollFd::new
).
Note that when reading from a channel such as a pipe or a stream
socket, this event merely indicates that the peer closed its
end of the channel. Subsequent reads from the channel will
return 0 (end of file) only after all outstanding data in the
channel has been consumed.
pub const POLLNVAL: PollFlags
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Invalid request: fd
not open (only returned in
PollFd::revents
;
ignored in PollFd::new
).
pub const fn empty() -> PollFlags
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Returns an empty set of flags
pub const fn all() -> PollFlags
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Returns the set containing all flags.
pub const fn bits(&self) -> c_short
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Returns the raw value of the flags currently stored.
pub fn from_bits(bits: c_short) -> Option<PollFlags>
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Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.
pub const fn from_bits_truncate(bits: c_short) -> PollFlags
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Convert from underlying bit representation, dropping any bits that do not correspond to flags.
pub const unsafe fn from_bits_unchecked(bits: c_short) -> PollFlags
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Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).
pub const fn is_empty(&self) -> bool
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Returns true
if no flags are currently stored.
pub const fn is_all(&self) -> bool
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Returns true
if all flags are currently set.
pub const fn intersects(&self, other: PollFlags) -> bool
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Returns true
if there are flags common to both self
and other
.
pub const fn contains(&self, other: PollFlags) -> bool
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Returns true
all of the flags in other
are contained within self
.
pub fn insert(&mut self, other: PollFlags)
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Inserts the specified flags in-place.
pub fn remove(&mut self, other: PollFlags)
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Removes the specified flags in-place.
pub fn toggle(&mut self, other: PollFlags)
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Toggles the specified flags in-place.
pub fn set(&mut self, other: PollFlags, value: bool)
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Inserts or removes the specified flags depending on the passed value.
Trait Implementations
impl Binary for PollFlags
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impl BitAnd<PollFlags> for PollFlags
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type Output = PollFlags
The resulting type after applying the &
operator.
fn bitand(self, other: PollFlags) -> PollFlags
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Returns the intersection between the two sets of flags.
impl BitAndAssign<PollFlags> for PollFlags
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fn bitand_assign(&mut self, other: PollFlags)
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Disables all flags disabled in the set.
impl BitOr<PollFlags> for PollFlags
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type Output = PollFlags
The resulting type after applying the |
operator.
fn bitor(self, other: PollFlags) -> PollFlags
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Returns the union of the two sets of flags.
impl BitOrAssign<PollFlags> for PollFlags
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fn bitor_assign(&mut self, other: PollFlags)
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Adds the set of flags.
impl BitXor<PollFlags> for PollFlags
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type Output = PollFlags
The resulting type after applying the ^
operator.
fn bitxor(self, other: PollFlags) -> PollFlags
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Returns the left flags, but with all the right flags toggled.
impl BitXorAssign<PollFlags> for PollFlags
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fn bitxor_assign(&mut self, other: PollFlags)
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Toggles the set of flags.
impl Clone for PollFlags
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impl Copy for PollFlags
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impl Debug for PollFlags
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impl Eq for PollFlags
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impl Extend<PollFlags> for PollFlags
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fn extend<T: IntoIterator<Item = PollFlags>>(&mut self, iterator: T)
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fn extend_one(&mut self, item: A)
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fn extend_reserve(&mut self, additional: usize)
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impl FromIterator<PollFlags> for PollFlags
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fn from_iter<T: IntoIterator<Item = PollFlags>>(iterator: T) -> PollFlags
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impl Hash for PollFlags
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fn hash<__H: Hasher>(&self, state: &mut __H)
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fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
H: Hasher,
impl LowerHex for PollFlags
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impl Not for PollFlags
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type Output = PollFlags
The resulting type after applying the !
operator.
fn not(self) -> PollFlags
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Returns the complement of this set of flags.
impl Octal for PollFlags
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impl Ord for PollFlags
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fn cmp(&self, other: &PollFlags) -> Ordering
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#[must_use]fn max(self, other: Self) -> Self
1.21.0[src]
#[must_use]fn min(self, other: Self) -> Self
1.21.0[src]
#[must_use]fn clamp(self, min: Self, max: Self) -> Self
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impl PartialEq<PollFlags> for PollFlags
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impl PartialOrd<PollFlags> for PollFlags
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fn partial_cmp(&self, other: &PollFlags) -> Option<Ordering>
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fn lt(&self, other: &PollFlags) -> bool
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fn le(&self, other: &PollFlags) -> bool
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fn gt(&self, other: &PollFlags) -> bool
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fn ge(&self, other: &PollFlags) -> bool
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impl StructuralEq for PollFlags
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impl StructuralPartialEq for PollFlags
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impl Sub<PollFlags> for PollFlags
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type Output = PollFlags
The resulting type after applying the -
operator.
fn sub(self, other: PollFlags) -> PollFlags
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Returns the set difference of the two sets of flags.
impl SubAssign<PollFlags> for PollFlags
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fn sub_assign(&mut self, other: PollFlags)
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Disables all flags enabled in the set.
impl UpperHex for PollFlags
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Auto Trait Implementations
impl RefUnwindSafe for PollFlags
impl Send for PollFlags
impl Sync for PollFlags
impl Unpin for PollFlags
impl UnwindSafe for PollFlags
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,