Trait sync_file::WriteAt

source · [−]
pub trait WriteAt {
    fn write_at(&self, buf: &[u8], offset: u64) -> Result<usize>;

    fn write_all_at(&self, buf: &[u8], offset: u64) -> Result<()> { ... }
}
Expand description

The WriteAt trait allows for writing bytes to a source at a given offset.

Additionally, the methods of this trait only require a shared reference, which makes it ideal for parallel use.

Required methods

Writes a number of bytes starting from a given offset.

Returns the number of bytes written.

The offset is relative to the start of the file and thus independent from the current cursor.

The current file cursor is not affected by this function.

Note that similar to io::Write::write, it is not an error to return a short write.

Provided methods

Attempts to write an entire buffer starting from a given offset.

The offset is relative to the start of the file and thus independent from the current cursor.

The current file cursor is not affected by this function.

Errors

This function will return the first error of non-io::ErrorKind::Interrupted kind that write_at returns.

Implementations on Foreign Types

Implementors