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PrefetchEngine

Struct PrefetchEngine 

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

Per-reader prefetch engine (Send + Sync).

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impl PrefetchEngine

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pub fn new(options: OpenOptions, file_size: usize) -> Self

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pub fn pause_prefetch(&self)

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pub fn resume_prefetch(&self)

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pub fn options(&self) -> &OpenOptions

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pub fn strategy(&self) -> PrefetchStrategy

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pub fn is_eager(&self) -> bool

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pub fn cache_stats(&self) -> CacheStats

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pub fn start_eager_background(&self, data: Vec<u8>, tail_start: usize)

Start eager background load of the row data sector (§7.3).

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pub fn warmup(&self)

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pub fn on_access( &self, data: &[u8], tail_start: usize, record_count: usize, index: usize, )

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pub fn touch_page(&self, page_index: u32)

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pub fn prefetch_viewport( &self, data: &[u8], tail_start: usize, record_count: usize, start_index: usize, end_index: usize, )

Trait Implementations§

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impl Drop for PrefetchEngine

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fn drop(&mut self)

Executes the destructor for this type. Read more
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fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)
Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned. Read more

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

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. 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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fn into(self) -> U

Calls U::from(self).

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

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

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.