Struct Checkout

Source

pub struct Checkout<S = SnowflakeSession> { /* private fields */ }

Expand description

A session checked out of a pool.

Return it with SessionPool::checkin or drop it with SessionPool::discard. If it is dropped without either (a panic or early return between checkout and checkin), its Drop guard removes the orphaned slot so the member doesn’t linger as phantom-busy.

Checkout

Struct Checkout Copy item path

Implementations§

impl<S> Checkout<S>

pub fn session(&self) -> &S

pub fn base(&self) -> &QueryContext

pub fn current(&self) -> &QueryContext

pub fn id(&self) -> u64

Trait Implementations§

impl<S> Drop for Checkout<S>

fn drop(&mut self)

fn pin_drop(self: Pin<&mut Self>)

Auto Trait Implementations§

impl<S = SnowflakeSession> !RefUnwindSafe for Checkout<S>

impl<S = SnowflakeSession> !UnwindSafe for Checkout<S>

impl<S> Freeze for Checkout<S>where Option<S>: Freeze, Weak<Mutex<Vec<Slot<S>>>>: Freeze,

impl<S> Send for Checkout<S>where Option<S>: Send, Weak<Mutex<Vec<Slot<S>>>>: Send,

impl<S> Sync for Checkout<S>where Option<S>: Sync, Weak<Mutex<Vec<Slot<S>>>>: Sync,

impl<S> Unpin for Checkout<S>where Option<S>: Unpin, Weak<Mutex<Vec<Slot<S>>>>: Unpin,

impl<S> UnsafeUnpin for Checkout<S>where Option<S>: UnsafeUnpin, Weak<Mutex<Vec<Slot<S>>>>: UnsafeUnpin,

Blanket Implementations§

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

fn in_current_span(self) -> Instrumented<Self> ⓘ

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

fn into(self) -> U

impl<T> IntoEither for T

fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘwhere F: FnOnce(&Self) -> bool,

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

fn and<P, B, E>(self, other: P) -> And<T, P>where T: Sized + Policy<B, E>, P: Policy<B, E>,

fn or<P, B, E>(self, other: P) -> Or<T, P>where T: Sized + Policy<B, E>, P: Policy<B, E>,

impl<T> Same for T

type Output = T

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

type Error = !

fn try_from(value: U) -> Result<T, !>

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

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

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

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘwhere S: Into<Dispatch>,

fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Struct Checkout

impl<S> Freeze for Checkout<S>
where Option<S>: Freeze, Weak<Mutex<Vec<Slot<S>>>>: Freeze,

impl<S> Send for Checkout<S>
where Option<S>: Send, Weak<Mutex<Vec<Slot<S>>>>: Send,

impl<S> Sync for Checkout<S>
where Option<S>: Sync, Weak<Mutex<Vec<Slot<S>>>>: Sync,

impl<S> Unpin for Checkout<S>
where Option<S>: Unpin, Weak<Mutex<Vec<Slot<S>>>>: Unpin,

impl<S> UnsafeUnpin for Checkout<S>
where Option<S>: UnsafeUnpin, Weak<Mutex<Vec<Slot<S>>>>: UnsafeUnpin,

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

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

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

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

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

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

fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

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

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

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,