Struct swap::userfaultfd::DeadUffdCheckerImpl

pub struct DeadUffdCheckerImpl {
    dummy_mmap: MemoryMapping,
}

Check whether the process for the Userfaultfd is dead or not.

DeadUffdCheckerImpl uses UFFD_ZERO on a dummy mmap page to check the liveness.

This must keep alive on the main process to make the dummy mmap present in all descendant processes.

Fields

dummy_mmap: MemoryMapping

Implementations

impl DeadUffdCheckerImpl

pub fn new() -> Result<Self>

Creates DeadUffdCheckerImpl.

Trait Implementations

impl DeadUffdChecker for DeadUffdCheckerImpl

fn register(&self, uffd: &Userfaultfd) -> Result<()>

Register the Userfaultfd

fn is_dead(&self, uffd: &Userfaultfd) -> bool

Check whether the Userfaultfd is dead or not.

fn reset(&self) -> Result<()>

Free the internal state.