Struct ipfs_sqlite_block_store::cache::InMemCacheTracker [−][src]
keep track of block accesses in memory
Implementations
impl<T, F> InMemCacheTracker<T, F> where
T: Ord + Clone + Debug,
F: Fn(Duration, BlockInfo) -> Option<T>,
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T: Ord + Clone + Debug,
F: Fn(Duration, BlockInfo) -> Option<T>,
pub fn new(mk_cache_entry: F) -> Self
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mk_cache_entry will be called on each block access to create or update a cache entry. It allows to customize whether we are interested in an entry at all, and what entries we want to be preserved.
E.g. to just sort entries by their access time, use |access, _, _| Some(access)
.
this will keep entries in the cache based on last access time.
It is also possible to use more sophisticated strategies like only caching certain cid types or caching based on the data size.
Trait Implementations
impl<T, F> CacheTracker for InMemCacheTracker<T, F> where
T: Ord + Clone + Debug + Send,
F: Fn(Duration, BlockInfo) -> Option<T> + Send,
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T: Ord + Clone + Debug + Send,
F: Fn(Duration, BlockInfo) -> Option<T> + Send,
fn blocks_accessed(&self, blocks: Vec<BlockInfo>)
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called whenever blocks were accessed
fn blocks_deleted(&self, blocks: Vec<BlockInfo>)
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notification that these ids no longer have to be tracked
fn retain_ids(&self, ids: &[i64])
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notification that only these ids should be retained
fn sort_ids(&self, ids: &mut [i64])
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sort ids by importance. More important ids should go to the end.
fn blocks_written(&self, blocks: Vec<WriteInfo>)
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impl<T: Debug, F> Debug for InMemCacheTracker<T, F>
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Auto Trait Implementations
impl<T, F> !RefUnwindSafe for InMemCacheTracker<T, F>
impl<T, F> Send for InMemCacheTracker<T, F> where
F: Send,
T: Send,
F: Send,
T: Send,
impl<T, F> Sync for InMemCacheTracker<T, F> where
F: Sync,
T: Send,
F: Sync,
T: Send,
impl<T, F> Unpin for InMemCacheTracker<T, F> where
F: Unpin,
F: Unpin,
impl<T, F> !UnwindSafe for InMemCacheTracker<T, F>
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T> Instrument for T
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pub fn instrument(self, span: Span) -> Instrumented<Self>
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pub fn in_current_span(self) -> Instrumented<Self>
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> References<RawCodec> for T
pub fn references<R, E>(
_c: RawCodec,
_r: &mut R,
_set: &mut E
) -> Result<(), Error> where
E: Extend<Cid<UInt<UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, B0>>>,
R: Read,
_c: RawCodec,
_r: &mut R,
_set: &mut E
) -> Result<(), Error> where
E: Extend<Cid<UInt<UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, B0>>>,
R: Read,
impl<T> Same<T> for T
type Output = T
Should always be Self
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,