Struct sp_runtime::offchain::storage_lock::StorageLockGuard

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pub struct StorageLockGuard<'a, 'b, L: Lockable> { /* private fields */ }

Expand description

RAII style guard for a lock.

Implementations

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impl<'a, 'b, L: Lockable> StorageLockGuard<'a, 'b, L>

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pub fn forget(self)

Consume the guard but do not unlock the underlying lock.

Can be used to implement a grace period after doing some heavy computations and sending a transaction to be included on-chain. By forgetting the lock, it will stay locked until its expiration deadline is reached while the off-chain worker can already exit.

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pub fn extend_lock(&mut self) -> Result<<L as Lockable>::Deadline, ()>

Extend the lock by guard deadline if it already exists.

i.e. large sets of items for which it is hard to calculate a meaning full conservative deadline which does not block for a very long time on node termination.

Trait Implementations

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impl<'a, 'b, L: Lockable> Drop for StorageLockGuard<'a, 'b, L>

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations

impl<'a, 'b, L> RefUnwindSafe for StorageLockGuard<'a, 'b, L>where
L: RefUnwindSafe,

impl<'a, 'b, L> Send for StorageLockGuard<'a, 'b, L>where
L: Send,

impl<'a, 'b, L> Sync for StorageLockGuard<'a, 'b, L>where
L: Sync,

impl<'a, 'b, L> Unpin for StorageLockGuard<'a, 'b, L>where
'a: 'b,

impl<'a, 'b, L> !UnwindSafe for StorageLockGuard<'a, 'b, L>

Blanket Implementations

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> CheckedConversion for T

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fn checked_from<T>(t: T) -> Option<Self>where
Self: TryFrom<T>,

Convert from a value of T into an equivalent instance of Option<Self>. Read more

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fn checked_into<T>(self) -> Option<T>where
Self: TryInto<T>,

Consume self to return Some equivalent value of Option<T>. Read more

impl<T> Downcast for Twhere
T: Any,

fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait. Read more

fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait. Read more

fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s. Read more

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s. Read more

impl<T> DowncastSync for Twhere
T: Any + Send + Sync,

fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send + 'static>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait. Read more

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