Struct MappedObjects 

pub struct MappedObjects {
    mappings: Vec<Arc<Mmap>>,
}

Read-only file mappings, numbered in the order passed to Self::open.

Fields

mappings: Vec<Arc<Mmap>>

Implementations

impl MappedObjects

pub fn open<'a>( paths: impl IntoIterator<Item = &'a Path>, ) -> Result<MappedObjects, Error>

Map files read-only, assigning object IDs from zero in iteration order. Files must remain unchanged while any returned mapping is alive.

pub fn mapping(&self, id: ObjectId) -> Result<&Mmap, Error>

Borrow an entire object mapping; fail if the object index is out of range. The caller must use IDs from this source.

pub fn bytes(&self, span: &DataSpan) -> Result<&[u8], Error>

Borrow a byte range after checking its object ID and bounds.

pub fn view(&self, span: &DataSpan) -> Result<MappedBytes, Error>

Retain a byte range without copying its contents, checking ID and bounds.

Trait Implementations

impl ByteSource for MappedObjects

fn objects(&self) -> Vec<ObjectInfo>

List the objects addressable through this source.

fn read(&self, span: &DataSpan, output: &mut dyn Write) -> Result<(), Error>

Write the requested byte range to output, or return an error.

fn map(&self, span: &DataSpan) -> Result<Option<MappedBytes>, Error>

Return a retained view, or None if this source cannot map bytes. Invalid ranges on a mappable source return an error.

impl Clone for MappedObjects

fn clone(&self) -> MappedObjects

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for MappedObjects

fn default() -> MappedObjects

Returns the “default value” for a type.