Struct OwnerLock 

pub struct OwnerLock {
    pub path: PathBuf,
    /* private fields */
}

A process-lifetime exclusive lock on a data directory.

The lock file is created at {data_dir}/.owner.lock with mode 0600. The lock is held for the lifetime of this struct (RAII). When dropped, the file handle is closed which automatically releases the advisory lock.

Fields

path: PathBuf

Implementations

impl OwnerLock

pub fn acquire(data_dir: &Path) -> Result<Self>

Attempt to acquire an exclusive, non-blocking lock on the data directory.

Returns Err(DATA_DIR_ALREADY_OWNED) if another process already holds the lock. No database files are opened or modified during lock acquisition.

Trait Implementations

impl Debug for OwnerLock

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

Formats the value using the given formatter.

impl Drop for OwnerLock

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.