Trait Sqlite3Wal 

pub unsafe trait Sqlite3Wal: Sqlite3Api {
    // Required methods
    unsafe fn wal_checkpoint(
        &self,
        db: NonNull<Self::Db>,
        db_name: Option<&str>,
    ) -> Result<()>;
    unsafe fn wal_checkpoint_v2(
        &self,
        db: NonNull<Self::Db>,
        db_name: Option<&str>,
        mode: i32,
    ) -> Result<(i32, i32)>;
    unsafe fn wal_frame_count(
        &self,
        db: NonNull<Self::Db>,
    ) -> Result<Option<u32>>;
}

Optional backend extension for WAL helpers.

Safety

Implementations must only operate on valid database handles and obey SQLite checkpoint and WAL-state semantics.

Required Methods

unsafe fn wal_checkpoint( &self, db: NonNull<Self::Db>, db_name: Option<&str>, ) -> Result<()>

Run a passive checkpoint for db_name (or main when None).

unsafe fn wal_checkpoint_v2( &self, db: NonNull<Self::Db>, db_name: Option<&str>, mode: i32, ) -> Result<(i32, i32)>

Run checkpoint mode mode, returning (log_frames, checkpointed_frames).

unsafe fn wal_frame_count(&self, db: NonNull<Self::Db>) -> Result<Option<u32>>

Return backend-specific WAL frame count when supported.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors