Struct Txn 

pub struct Txn { /* private fields */ }

An open transaction: the backups exist and the marker names this process. Dropping it without commit restores both files.

Implementations

impl Txn

pub fn commit(self) -> Result<(), FinishFailure>

Keep the new contents and finish the transaction.

Errors

The finishing failure: the marker could be neither neutralized nor removed, so it is still active beside its backups, and the caller must name it, because the next recovery would roll the finished bump back.

pub fn abort(self) -> Result<Vec<String>, AbortFailure>

Put both files back and finish the transaction; the names restored.

Errors

Where a file cannot be put back, the marker and the backups stay active for the next run’s recovery. Where the files are back and the marker cannot be finished, the error says so: an active marker beside its backups would overwrite later edits on the next recovery.

pub fn marker(&self) -> &Path

The marker’s path, for a report that must name it.

Trait Implementations

impl Debug for Txn

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

Formats the value using the given formatter.

impl Drop for Txn

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.