Trait FileReader 

pub trait FileReader {
    // Required method
    fn read_at(&self, offset: u64, buf: &mut [u8]) -> Result<usize>;
}

This trait represents file that can atomically be read at specific point

For unix we implement it for File + AsRawFd with pread() system call. For windows we’re implementing it for Mutex<File> and use seek.

Required Methods

fn read_at(&self, offset: u64, buf: &mut [u8]) -> Result<usize>

Read file at specified location

This corresponds to the pread system call on most unix systems

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl FileReader for File

Available on Unix only.

fn read_at(&self, offset: u64, buf: &mut [u8]) -> Result<usize>

Implementors