Struct concread::cowcell::CowCellWriteTxn

source · [−]

pub struct CowCellWriteTxn<'a, T: 'a> { /* private fields */ }

Expand description

A CowCell Write Transaction handle.

This allows mutation of the content of the CowCell without blocking or affecting current readers.

Changes are only stored in this structure until you call commit. To abort/ rollback a change, don’t call commit and allow the write transaction to be dropped. This causes the CowCell to unlock allowing the next writer to proceed.

Implementations

impl<'a, T> CowCellWriteTxn<'a, T> where
T: Clone,

pub fn get_mut(&mut self) -> &mut T

Access a mutable pointer of the data in the CowCell. This data is only visible to the write transaction object in this thread, until you call commit().

pub fn commit(self)

Commit the changes made in this write transactions to the CowCell. This will consume the transaction so no further changes can be made after this is called. Not calling this in a block, is equivalent to an abort/rollback of the transaction.

Trait Implementations

impl<'a, T> Deref for CowCellWriteTxn<'a, T> where
T: Clone,

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &T

Dereferences the value.

impl<'a, T> DerefMut for CowCellWriteTxn<'a, T> where
T: Clone,

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

Mutably dereferences the value.

Auto Trait Implementations

impl<'a, T> RefUnwindSafe for CowCellWriteTxn<'a, T> where
T: RefUnwindSafe,

impl<'a, T> !Send for CowCellWriteTxn<'a, T>

impl<'a, T> Sync for CowCellWriteTxn<'a, T> where
T: Send + Sync,

impl<'a, T> Unpin for CowCellWriteTxn<'a, T> where
T: Unpin,

impl<'a, T> UnwindSafe for CowCellWriteTxn<'a, T> where
T: UnwindSafe + RefUnwindSafe,

Blanket Implementations

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · 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.

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::()

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

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

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.