Struct sp_runtime::offchain::storage_lock::StorageLockGuard

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

Expand description

RAII style guard for a lock.

Implementations§

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

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.

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§

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

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>

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

Blanket Implementations§

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

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Gets the TypeId of self. Read more

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Immutably borrows from an owned value. Read more

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Mutably borrows from an owned value. Read more

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

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Returns the argument unchanged.

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Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

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impl<T> Same for T

type Output = T

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Consume self to return an equivalent value of T.

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