Struct AtomicBitmapMmap

pub struct AtomicBitmapMmap { /* private fields */ }

AtomicBitmapMmap implements a simple memory-mapped bitmap on the page level with test and set operations. The main use case is to support live migration on vhost-user backends (see VHOST_USER_PROTOCOL_F_LOG_SHMFD and VHOST_USER_SET_LOG_BASE in the vhost-user protocol specification). It uses a fixed memory page size of LOG_PAGE_SIZE bytes, so it converts addresses to page numbers before setting or clearing the bits.

Trait Implementations

impl Debug for AtomicBitmapMmap

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl MemRegionBitmap for AtomicBitmapMmap

fn new<R: GuestMemoryRegion>( region: &R, logmem: Arc<MmapLogReg>, ) -> Result<Self>

Creates a new bitmap relative to region, using the logmem as backing memory for the bitmap