Struct rustdb::wmap::WMap

source · 
pub struct WMap {
    pub map: BTreeMap<u64, DataSlice>,
}
Expand description

Implements an updateable file based on some underlying storage.

Fields§

§map: BTreeMap<u64, DataSlice>

Map of outstanding writes which have not yet been written to the underlying file.

Implementations§

source§

impl WMap

source

pub fn read(&self, start: u64, data: &mut [u8], u: &dyn Storage)

Read from file, taking writes into account. Unwritten ranges are read from underlying storage.

source

pub fn write(&mut self, start: u64, data: Data, off: usize, len: usize)

Write to file. Existing writes which overlap with new write need to be trimmed or removed.

Trait Implementations§

source§

impl Default for WMap

source§

fn default() -> Self

Construct a new WMap

Auto Trait Implementations§

§

impl RefUnwindSafe for WMap

§

impl Send for WMap

§

impl Sync for WMap

§

impl Unpin for WMap

§

impl UnwindSafe for WMap

Blanket Implementations§

source§

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

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

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

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

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

source§

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

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

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

source§

fn into(self) -> U

Calls U::from(self).

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

source§

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

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

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

§

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

The type returned in the event of a conversion error.
source§

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

Performs the conversion.