Trait io_ranges::Range [−][src]
A minimal base trait for range I/O. Defines operations common to all kinds of random-access devices that fit the "range" concept, including normal files, block devices, and in-memory buffers.
This is a base trait that ReadAt
, WriteAt
, and EditAt
all
share.
Required methods
fn metadata(&self) -> Result<Metadata>
[src]
Return the Metadata
for the range. This is similar to
std::fs::File::metadata
, though it returns fewer fields since the
underlying device may not be an actual filesystem inode.
fn advise(&self, offset: u64, len: u64, advice: Advice) -> Result<()>
[src]
Announce the expected access pattern of the data at the given offset.
This is purely a performance hint and has no semantic effect.