pub struct RawReadDesc {
pub start_offset: Offset,
pub regions: Vec<FileRegion>,
pub total: usize,
}Expand description
Descriptor form of Log::read_raw for the zero-copy sendfile fetch
path, Increments D + E.
One krabka_protocol::records::FileRegion describes the records run
for each contributing segment. A multi-segment fetch therefore goes
out as several sendfile regions with no coalescing copy.
read_raw instead concatenates cross-segment chunks into a fresh
BytesMut. This type is compiled on the SENDFILE alias: Linux, Apple,
and FreeBSD/DragonFly.
Fields§
§start_offset: OffsetAbsolute offset of the first batch in the regions, or the requested offset when no bytes were returned.
regions: Vec<FileRegion>One file-backed region per contributing segment, in wire order.
total: usizeTotal byte length across all regions.
Trait Implementations§
Source§impl Clone for RawReadDesc
impl Clone for RawReadDesc
Source§fn clone(&self) -> RawReadDesc
fn clone(&self) -> RawReadDesc
1.0.0 (const: unstable) · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moreAuto Trait Implementations§
impl Freeze for RawReadDesc
impl RefUnwindSafe for RawReadDesc
impl Send for RawReadDesc
impl Sync for RawReadDesc
impl Unpin for RawReadDesc
impl UnsafeUnpin for RawReadDesc
impl UnwindSafe for RawReadDesc
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