[−][src]Struct postgres::CancelToken
The capability to request cancellation of in-progress queries on a connection.
Methods
impl CancelToken[src]
pub fn cancel_query<T>(&self, tls: T) -> Result<(), Error> where
T: MakeTlsConnect<Socket>, [src]
T: MakeTlsConnect<Socket>,
Attempts to cancel the in-progress query on the connection associated
with this CancelToken.
The server provides no information about whether a cancellation attempt was successful or not. An error will only be returned if the client was unable to connect to the database.
Cancellation is inherently racy. There is no guarantee that the cancellation request will reach the server before the query terminates normally, or that the connection associated with this token is still active.
Trait Implementations
impl Clone for CancelToken[src]
fn clone(&self) -> CancelToken[src]
fn clone_from(&mut self, source: &Self)1.0.0[src]
Auto Trait Implementations
impl RefUnwindSafe for CancelToken
impl Send for CancelToken
impl Sync for CancelToken
impl Unpin for CancelToken
impl UnwindSafe for CancelToken
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized, [src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized, [src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized, [src]
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T[src]
impl<T> From<T> for T[src]
impl<T, U> Into<U> for T where
U: From<T>, [src]
U: From<T>,
impl<T> Same<T> for T
type Output = T
Should always be Self
impl<T> ToOwned for T where
T: Clone, [src]
T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T[src]
fn clone_into(&self, target: &mut T)[src]
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src]
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,