pub struct ConnectionGuard { /* private fields */ }Expand description
Limits the number of connections.
Implementations§
Source§impl ConnectionGuard
impl ConnectionGuard
Sourcepub fn try_acquire(&self) -> Option<ConnectionPermit>
pub fn try_acquire(&self) -> Option<ConnectionPermit>
Acquire a connection permit.
Sourcepub fn available_connections(&self) -> usize
pub fn available_connections(&self) -> usize
Get the number of available connection slots.
Sourcepub fn max_connections(&self) -> usize
pub fn max_connections(&self) -> usize
Get the maximum number of connections.
Trait Implementations§
Source§impl Clone for ConnectionGuard
impl Clone for ConnectionGuard
Auto Trait Implementations§
impl Freeze for ConnectionGuard
impl RefUnwindSafe for ConnectionGuard
impl Send for ConnectionGuard
impl Sync for ConnectionGuard
impl Unpin for ConnectionGuard
impl UnsafeUnpin for ConnectionGuard
impl UnwindSafe for ConnectionGuard
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
§impl<T> Instrument for T
impl<T> Instrument for T
§fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
impl<T> Read<Exclusive, BecauseExclusive> for Twhere
T: ?Sized,
§impl<T> WithSubscriber for T
impl<T> WithSubscriber for T
§fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘwhere
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘwhere
S: Into<Dispatch>,
§fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ
fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ
Layout§
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.
Size: 16 bytes