Struct otter_nodejs_tests::otter_support::crates::nix::poll::PollFlags
[−]pub struct PollFlags { /* private fields */ }
Expand description
These flags define the different events that can be monitored by poll
and ppoll
Implementations
impl PollFlags
impl PollFlags
pub const POLLPRI: PollFlags = Self{bits: libc::POLLPRI,}
pub const POLLPRI: PollFlags = Self{bits: libc::POLLPRI,}
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 = Self{bits: libc::POLLOUT,}
pub const POLLOUT: PollFlags = Self{bits: libc::POLLOUT,}
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 = Self{bits: libc::POLLRDNORM,}
pub const POLLRDNORM: PollFlags = Self{bits: libc::POLLRDNORM,}
Equivalent to POLLIN
pub const POLLWRNORM: PollFlags = Self{bits: libc::POLLWRNORM,}
pub const POLLWRNORM: PollFlags = Self{bits: libc::POLLWRNORM,}
Equivalent to POLLOUT
pub const POLLRDBAND: PollFlags = Self{bits: libc::POLLRDBAND,}
pub const POLLRDBAND: PollFlags = Self{bits: libc::POLLRDBAND,}
Priority band data can be read (generally unused on Linux).
pub const POLLWRBAND: PollFlags = Self{bits: libc::POLLWRBAND,}
pub const POLLWRBAND: PollFlags = Self{bits: libc::POLLWRBAND,}
Priority data may be written.
pub const POLLERR: PollFlags = Self{bits: libc::POLLERR,}
pub const POLLERR: PollFlags = Self{bits: libc::POLLERR,}
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 = Self{bits: libc::POLLHUP,}
pub const POLLHUP: PollFlags = Self{bits: libc::POLLHUP,}
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 = Self{bits: libc::POLLNVAL,}
pub const POLLNVAL: PollFlags = Self{bits: libc::POLLNVAL,}
Invalid request: fd
not open (only returned in
PollFd::revents
;
ignored in PollFd::new
).
pub const fn from_bits(bits: i16) -> Option<PollFlags>
pub const fn from_bits(bits: i16) -> Option<PollFlags>
Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.
pub const fn from_bits_truncate(bits: i16) -> PollFlags
pub const fn from_bits_truncate(bits: i16) -> PollFlags
Convert from underlying bit representation, dropping any bits that do not correspond to flags.
pub const unsafe fn from_bits_unchecked(bits: i16) -> PollFlags
pub const unsafe fn from_bits_unchecked(bits: i16) -> PollFlags
Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).
Safety
The caller of the bitflags!
macro can chose to allow or
disallow extra bits for their bitflags type.
The caller of from_bits_unchecked()
has to ensure that
all bits correspond to a defined flag or that extra bits
are valid for this bitflags type.
pub const fn intersects(&self, other: PollFlags) -> bool
pub const fn intersects(&self, other: PollFlags) -> bool
Returns true
if there are flags common to both self
and other
.
pub const fn contains(&self, other: PollFlags) -> bool
pub const fn contains(&self, other: PollFlags) -> bool
Returns true
if all of the flags in other
are contained within self
.
pub fn set(&mut self, other: PollFlags, value: bool)
pub fn set(&mut self, other: PollFlags, value: bool)
Inserts or removes the specified flags depending on the passed value.
pub const fn intersection(self, other: PollFlags) -> PollFlags
pub const fn intersection(self, other: PollFlags) -> PollFlags
Returns the intersection between the flags in self
and
other
.
Specifically, the returned set contains only the flags which are
present in both self
and other
.
This is equivalent to using the &
operator (e.g.
ops::BitAnd
), as in flags & other
.
pub const fn union(self, other: PollFlags) -> PollFlags
pub const fn union(self, other: PollFlags) -> PollFlags
Returns the union of between the flags in self
and other
.
Specifically, the returned set contains all flags which are
present in either self
or other
, including any which are
present in both (see Self::symmetric_difference
if that
is undesirable).
This is equivalent to using the |
operator (e.g.
ops::BitOr
), as in flags | other
.
pub const fn difference(self, other: PollFlags) -> PollFlags
pub const fn difference(self, other: PollFlags) -> PollFlags
Returns the difference between the flags in self
and other
.
Specifically, the returned set contains all flags present in
self
, except for the ones present in other
.
It is also conceptually equivalent to the “bit-clear” operation:
flags & !other
(and this syntax is also supported).
This is equivalent to using the -
operator (e.g.
ops::Sub
), as in flags - other
.
pub const fn symmetric_difference(self, other: PollFlags) -> PollFlags
pub const fn symmetric_difference(self, other: PollFlags) -> PollFlags
Returns the symmetric difference between the flags
in self
and other
.
Specifically, the returned set contains the flags present which
are present in self
or other
, but that are not present in
both. Equivalently, it contains the flags present in exactly
one of the sets self
and other
.
This is equivalent to using the ^
operator (e.g.
ops::BitXor
), as in flags ^ other
.
pub const fn complement(self) -> PollFlags
pub const fn complement(self) -> PollFlags
Returns the complement of this set of flags.
Specifically, the returned set contains all the flags which are
not set in self
, but which are allowed for this type.
Alternatively, it can be thought of as the set difference
between Self::all()
and self
(e.g. Self::all() - self
)
This is equivalent to using the !
operator (e.g.
ops::Not
), as in !flags
.
Trait Implementations
impl BitAndAssign<PollFlags> for PollFlags
impl BitAndAssign<PollFlags> for PollFlags
fn bitand_assign(&mut self, other: PollFlags)
fn bitand_assign(&mut self, other: PollFlags)
Disables all flags disabled in the set.
impl BitOrAssign<PollFlags> for PollFlags
impl BitOrAssign<PollFlags> for PollFlags
fn bitor_assign(&mut self, other: PollFlags)
fn bitor_assign(&mut self, other: PollFlags)
Adds the set of flags.
impl BitXorAssign<PollFlags> for PollFlags
impl BitXorAssign<PollFlags> for PollFlags
fn bitxor_assign(&mut self, other: PollFlags)
fn bitxor_assign(&mut self, other: PollFlags)
Toggles the set of flags.
impl Extend<PollFlags> for PollFlags
impl Extend<PollFlags> for PollFlags
fn extend<T>(&mut self, iterator: T) where
T: IntoIterator<Item = PollFlags>,
fn extend<T>(&mut self, iterator: T) where
T: IntoIterator<Item = PollFlags>,
Extends a collection with the contents of an iterator. Read more
sourcefn extend_one(&mut self, item: A)
fn extend_one(&mut self, item: A)
extend_one
)Extends a collection with exactly one element.
sourcefn extend_reserve(&mut self, additional: usize)
fn extend_reserve(&mut self, additional: usize)
extend_one
)Reserves capacity in a collection for the given number of additional elements. Read more
impl FromIterator<PollFlags> for PollFlags
impl FromIterator<PollFlags> for PollFlags
fn from_iter<T>(iterator: T) -> PollFlags where
T: IntoIterator<Item = PollFlags>,
fn from_iter<T>(iterator: T) -> PollFlags where
T: IntoIterator<Item = PollFlags>,
Creates a value from an iterator. Read more
impl Ord for PollFlags
impl Ord for PollFlags
impl PartialOrd<PollFlags> for PollFlags
impl PartialOrd<PollFlags> for PollFlags
fn partial_cmp(&self, other: &PollFlags) -> Option<Ordering>
fn partial_cmp(&self, other: &PollFlags) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
1.0.0 · sourcefn lt(&self, other: &Rhs) -> bool
fn lt(&self, other: &Rhs) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
1.0.0 · sourcefn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl SubAssign<PollFlags> for PollFlags
impl SubAssign<PollFlags> for PollFlags
fn sub_assign(&mut self, other: PollFlags)
fn sub_assign(&mut self, other: PollFlags)
Disables all flags enabled in the set.
impl Copy for PollFlags
impl Eq for PollFlags
impl StructuralEq for PollFlags
impl StructuralPartialEq for PollFlags
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
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
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