Struct ExceptionLock

pub struct ExceptionLock<T> { /* private fields */ }

Allows access to the given value only while exceptions are masked, allowing it to be shared between exception contexts on a given core.

Implementations

impl<T> ExceptionLock<T>

pub const fn new(value: T) -> Self

Creates a new ExceptionLock containing the given value.

pub fn borrow<'cs>(&'cs self, _: ExceptionFree<'cs>) -> &'cs T

Gets a reference to the contents of the cell, given a token proving that exceptions are currently masked.

impl<T> ExceptionLock<RefCell<T>>

pub fn borrow_mut<'cs>(&'cs self, token: ExceptionFree<'cs>) -> RefMut<'cs, T>

Gets a unique reference to the contents of the RefCell, given a token proving that exceptions are currently masked.

pub fn as_ptr(&self) -> *mut T

Returns a raw pointer to the contents of the cell.

This must not be dereferenced while any RefMut to the same cell exists.

Trait Implementations

impl<T: Default> Default for ExceptionLock<T>

fn default() -> ExceptionLock<T>

Returns the “default value” for a type.

impl<T> FromBytes for ExceptionLock<T>

where T: FromBytes,

fn ref_from_bytes( source: &[u8], ) -> Result<&Self, ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, Infallible>>

where Self: KnownLayout + Immutable,

Interprets the given source as a &Self.

fn ref_from_prefix( source: &[u8], ) -> Result<(&Self, &[u8]), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, Infallible>>

where Self: KnownLayout + Immutable,

Interprets the prefix of the given source as a &Self without copying.

fn ref_from_suffix( source: &[u8], ) -> Result<(&[u8], &Self), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, Infallible>>

where Self: Immutable + KnownLayout,

Interprets the suffix of the given bytes as a &Self.

fn read_from_bytes(source: &[u8]) -> Result<Self, SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the given source.

fn read_from_prefix( source: &[u8], ) -> Result<(Self, &[u8]), SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the prefix of the given source.

fn read_from_suffix( source: &[u8], ) -> Result<(&[u8], Self), SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the suffix of the given source.

impl<T> FromZeros for ExceptionLock<T>

where T: FromZeros,

fn zero(&mut self)

Overwrites self with zeros.

fn new_zeroed() -> Self

where Self: Sized,

Creates an instance of Self from zeroed bytes.

impl<T> KnownLayout for ExceptionLock<T>

where Self: Sized,

type PointerMetadata = ()

The type of metadata stored in a pointer to Self.

impl<T> TryFromBytes for ExceptionLock<T>

where T: TryFromBytes,

fn try_ref_from_bytes( source: &[u8], ) -> Result<&Self, ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: KnownLayout + Immutable,

Attempts to interpret the given source as a &Self.

fn try_ref_from_prefix( source: &[u8], ) -> Result<(&Self, &[u8]), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: KnownLayout + Immutable,

Attempts to interpret the prefix of the given source as a &Self.

fn try_ref_from_suffix( source: &[u8], ) -> Result<(&[u8], &Self), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: KnownLayout + Immutable,

Attempts to interpret the suffix of the given source as a &Self.

fn try_read_from_bytes( source: &[u8], ) -> Result<Self, ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read the given source as a Self.

fn try_read_from_prefix( source: &[u8], ) -> Result<(Self, &[u8]), ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read a Self from the prefix of the given source.

fn try_read_from_suffix( source: &[u8], ) -> Result<(&[u8], Self), ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read a Self from the suffix of the given source.

impl<T> Immutable for ExceptionLock<T>

where T: Immutable,

impl<T> Unaligned for ExceptionLock<T>

where T: Unaligned,