mito2::region

Struct RegionMap

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pub(crate) struct RegionMap {
    regions: RwLock<HashMap<RegionId, Arc<MitoRegion>>>,
}
Expand description

Regions indexed by ids.

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§regions: RwLock<HashMap<RegionId, Arc<MitoRegion>>>

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impl RegionMap

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pub(crate) fn is_region_exists(&self, region_id: RegionId) -> bool

Returns true if the region exists.

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pub(crate) fn insert_region(&self, region: Arc<MitoRegion>)

Inserts a new region into the map.

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pub(crate) fn get_region(&self, region_id: RegionId) -> Option<Arc<MitoRegion>>

Gets region by region id.

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pub(crate) fn writable_region( &self, region_id: RegionId, ) -> Result<Arc<MitoRegion>>

Gets writable region by region id.

Returns error if the region does not exist or is readonly.

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pub(crate) fn follower_region( &self, region_id: RegionId, ) -> Result<Arc<MitoRegion>>

Gets readonly region by region id.

Returns error if the region does not exist or is writable.

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pub(crate) fn get_region_or<F: OnFailure>( &self, region_id: RegionId, cb: &mut F, ) -> Option<Arc<MitoRegion>>

Gets region by region id.

Calls the callback if the region does not exist.

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pub(crate) fn writable_region_or<F: OnFailure>( &self, region_id: RegionId, cb: &mut F, ) -> Option<Arc<MitoRegion>>

Gets writable region by region id.

Calls the callback if the region does not exist or is readonly.

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fn flushable_region(&self, region_id: RegionId) -> Result<Arc<MitoRegion>>

Gets flushable region by region id.

Returns error if the region does not exist or is not operable.

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pub(crate) fn flushable_region_or<F: OnFailure>( &self, region_id: RegionId, cb: &mut F, ) -> Option<Arc<MitoRegion>>

Gets flushable region by region id.

Calls the callback if the region does not exist or is not operable.

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pub(crate) fn remove_region(&self, region_id: RegionId)

Remove region by id.

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pub(crate) fn list_regions(&self) -> Vec<Arc<MitoRegion>>

List all regions.

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pub(crate) fn clear(&self)

Clear the map.

Trait Implementations§

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impl Debug for RegionMap

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for RegionMap

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fn default() -> RegionMap

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

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