Enum PagerBackend 

pub enum PagerBackend {
    Memory(Arc<SimplePager<MemoryVfs>>),
    IoUring(Arc<SimplePager<IoUringVfs>>),
    Unix(Arc<SimplePager<UnixVfs>>),
}

Pager backend that dispatches across VFS implementations.

Wraps SimplePager for both in-memory (:memory:) and on-disk connections without making Connection generic.

Variants

Memory(Arc<SimplePager<MemoryVfs>>)

In-memory VFS backend (:memory: databases).

IoUring(Arc<SimplePager<IoUringVfs>>)

Linux io_uring VFS backend (file-backed databases on Linux).

Unix(Arc<SimplePager<UnixVfs>>)

Unix filesystem VFS backend (file-backed databases on all unix platforms).

Implementations

impl PagerBackend

pub fn is_memory(&self) -> bool

Returns true if this backend uses the in-memory VFS (:memory:).

pub fn is_file_backed(&self) -> bool

Returns true if this backend uses a file-backed VFS.

pub async fn set_vfs_busy_timeout_ms(&self, cx: &Cx, ms: u64)

Propagate busy-timeout to the VFS file for cross-process lock retry.

pub async fn wal_frame_count(&self, cx: &Cx) -> usize

Number of frames currently in the WAL for this pager.

pub fn publication_write_count(&self) -> u64

Number of published metadata writes applied to this pager.

pub fn published_snapshot(&self) -> PagerPublishedSnapshot

Published pager metadata snapshot for lock-light visibility checks.

pub async fn refresh_published_snapshot( &self, cx: &Cx, ) -> Result<PagerPublishedSnapshot>

Refresh the pager publication plane from the latest committed state and return the resulting snapshot.

pub async fn refresh_published_snapshot_for_clean_wal_read( &self, cx: &Cx, ) -> Result<PagerPublishedSnapshot>

Refresh the pager publication plane for a clean WAL-mode read boundary.

pub fn bind_shared_connection_count(&self, counter: Arc<AtomicUsize>)

Bind a same-path connection counter into the underlying pager.

pub fn published_read_retry_count(&self) -> u64

Number of retries readers have taken while binding a stable published snapshot.

pub fn kind_str(&self) -> &'static str

Returns a string identifying the backend kind for diagnostics.

pub async fn file_identity(&self, cx: &Cx) -> Result<Option<FileIdentity>>

Return the identity of the already-open main database file.

pub fn page_size(&self) -> PageSize

The database page size in bytes.

Trait Implementations

impl Clone for PagerBackend

fn clone(&self) -> PagerBackend

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PagerBackend

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

Formats the value using the given formatter.