Struct miri::shims::unix::linux::fd::event::Event

source ·
pub struct Event {
    pub val: Cell<u64>,
}
Expand description

A kind of file descriptor created by eventfd. The Event type isn’t currently written to by eventfd. The interface is meant to keep track of objects associated with a file descriptor. For more information see the man page below:

https://man.netbsd.org/eventfd.2

Fields§

§val: Cell<u64>

The object contains an unsigned 64-bit integer (uint64_t) counter that is maintained by the kernel. This counter is initialized with the value specified in the argument initval.

Trait Implementations§

source§

impl Debug for Event

source§

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

Formats the value using the given formatter. Read more
source§

impl FileDescriptor for Event

source§

fn write<'tcx>( &self, _communicate_allowed: bool, bytes: &[u8], tcx: TyCtxt<'tcx> ) -> InterpResult<'tcx, Result<usize>>

A write call adds the 8-byte integer value supplied in its buffer (in native endianess) to the counter. The maximum value that may be stored in the counter is the largest unsigned 64-bit value minus 1 (i.e., 0xfffffffffffffffe). If the addition would cause the counter’s value to exceed the maximum, then the write either blocks until a read is performed on the file descriptor, or fails with the error EAGAIN if the file descriptor has been made nonblocking. A write fails with the error EINVAL if the size of the supplied buffer is less than 8 bytes, or if an attempt is made to write the value 0xffffffffffffffff.

source§

fn name(&self) -> &'static str

source§

fn dup(&mut self) -> Result<Box<dyn FileDescriptor>>

source§

fn close<'tcx>( self: Box<Self>, _communicate_allowed: bool ) -> InterpResult<'tcx, Result<i32>>

source§

fn read<'tcx>( &mut self, _communicate_allowed: bool, _bytes: &mut [u8], _tcx: TyCtxt<'tcx> ) -> InterpResult<'tcx, Result<usize>>

source§

fn seek<'tcx>( &mut self, _communicate_allowed: bool, _offset: SeekFrom ) -> InterpResult<'tcx, Result<u64>>

source§

fn is_tty(&self) -> bool

source§

fn as_unix_host_fd(&self) -> Option<i32>

Auto Trait Implementations§

§

impl !RefUnwindSafe for Event

§

impl Send for Event

§

impl !Sync for Event

§

impl Unpin for Event

§

impl UnwindSafe for Event

Blanket Implementations§

source§

impl<T> Any for Twhere T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for Twhere T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for Twhere T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for Twhere U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
§

impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

§

fn vzip(self) -> V

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: 8 bytes