TimeoutContext

Struct TimeoutContext 

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pub struct TimeoutContext { /* private fields */ }
Expand description

Lightweight timeout context for query execution.

This struct captures the timeout configuration from SelectExecutor and can be passed to functions that need to check for timeouts but don’t need the full executor reference.

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impl TimeoutContext

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pub fn new(start_time: Instant, timeout_seconds: u64) -> Self

Create a new timeout context with the given start time and timeout.

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pub fn from_executor(executor: &SelectExecutor<'_>) -> Self

Create a timeout context from a SelectExecutor.

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pub fn new_default() -> Self

Create a default timeout context (for use when no executor is available).

This creates a context with the current time as start and default timeout. Use sparingly - prefer from_executor when an executor is available.

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pub fn check(&self) -> Result<(), ExecutorError>

Check if the timeout has been exceeded.

Returns Ok(()) if within timeout, Err(QueryTimeoutExceeded) if exceeded.

Call this periodically in hot loops (every CHECK_INTERVAL iterations).

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pub fn start_time(&self) -> Instant

Get the start time for this timeout context.

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pub fn timeout_seconds(&self) -> u64

Get the timeout in seconds for this timeout context.

Trait Implementations§

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impl Clone for TimeoutContext

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fn clone(&self) -> TimeoutContext

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Default for TimeoutContext

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Copy for TimeoutContext

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

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Gets the TypeId of self. Read more
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where T: ?Sized,

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

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

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Dereferences the given pointer. Read more
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type Error = Infallible

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Performs the conversion.
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type Error = <U as TryFrom<T>>::Error

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

Performs the conversion.
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