Struct swap::page_handler::SwapInContext

pub struct SwapInContext<'a> {
    ctx: &'a Mutex<PageHandleContext<'a>>,
    cur_staging: usize,
}

Context for swap-in operation.

This holds cursor of indices in the regions for each step for optimization.

Fields

ctx: &'a Mutex<PageHandleContext<'a>>

cur_staging: usize

Implementations

impl SwapInContext<'_>

pub fn swap_in(&mut self, uffd: &Userfaultfd, max_size: usize) -> Result<usize>

Swap in a chunk of consecutive pages from the staging memory and the swap file.

If there is no more pages present outside of the guest memory, this returns Ok(0).

Returns the count of swapped in pages.

Arguments

• uffd - the main Userfaultfd.
• max_size - the upper limit of the chunk size to swap into the guest memory at once. The chunk is splitted if it is bigger than max_size.

Trait Implementations

impl Drop for SwapInContext<'_>

fn drop(&mut self)

Executes the destructor for this type.