Struct CtxHandle

Source
pub struct CtxHandle { /* private fields */ }
Expand description

A non-owning pointer to a Ctx.

A CtxHandle allows thread-safe configuration of the context aliased by the handle. It is also used to created sockets associated with the context.

Once the Ctx it is pointing to is shutdown or dropped, all associated CtxHandle will be invalidated. All calls involving an invalidated CtxHandle will return a InvalidCtx error.

use libzmq::{Ctx, Dish, ErrorKind};

// We create a `CtxHandle` from a new context. Since we drop
// the context pointed by the handle, it will no longer be valid
// once it reaches the outer scope.
let handle = {
    let ctx = Ctx::new();
    ctx.handle()
};

// Attempting to use the invalided handle will result in `InvalidCtx`
// errors.
let err = Dish::with_ctx(handle).unwrap_err();
match err.kind() {
    ErrorKind::InvalidCtx => (),
    _ => unreachable!(),
}

Implementations§

Trait Implementations§

Source§

impl Clone for CtxHandle

Source§

fn clone(&self) -> CtxHandle

Returns a copy of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
Source§

impl Debug for CtxHandle

Source§

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

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

impl PartialEq for CtxHandle

Source§

fn eq(&self, other: &CtxHandle) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
Source§

impl Copy for CtxHandle

Source§

impl Eq for CtxHandle

Source§

impl StructuralPartialEq for CtxHandle

Auto Trait Implementations§

Blanket Implementations§

Source§

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

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

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

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

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

Source§

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

Mutably borrows from an owned value. Read more
Source§

impl<T> CloneToUninit for T
where T: Clone,

Source§

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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 T
where 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> ToOwned for T
where T: Clone,

Source§

type Owned = T

The resulting type after obtaining ownership.
Source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
Source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
Source§

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

Source§

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 T
where U: TryFrom<T>,

Source§

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.