Function submit_writes

performance-metrics/src/util.rs:128–134

Submit `count` sequential write_vectored calls at `stride`-byte intervals.

(async_io: &mut dyn AsyncIo, count: usize, stride: u64, iovec: &[libc::iovec])

/// Submit `count` sequential write_vectored calls at `stride`-byte intervals.
pub fn submit_writes(async_io: &mut dyn AsyncIo, count: usize, stride: u64, iovec: &[libc::iovec]) {
    for i in 0..count {
        async_io
            .write_vectored((i as u64 * stride) as libc::off_t, iovec, i as u64)
            .expect("write_vectored failed");
    }
}

/// Drain `count` completions from an asynchronous I/O backend that delivers
/// results via eventfd notification (e.g. io_uring).