Struct PidLock 

pub struct PidLock { /* private fields */ }

Exclusive process lock protecting the redb-backed node.

Implementations

impl PidLock

pub fn new(data_dir: &Path) -> Self

pub fn try_acquire(&self) -> Result<bool>

Try to acquire and retain the lock for this process.

The PID is written only after the OS-level lock succeeds. A false result means another process currently owns the lock.

Errors

Returns an error when the lock file cannot be opened or updated.

pub fn release(&self) -> Result<()>

Release the lock held by this instance.

Errors

Returns an error when the OS refuses to release the lock.

pub fn owner_pid(&self) -> Result<Option<u32>>

Read the last PID written to the lock file.

Errors

Returns an error when the lock file cannot be read or its contents are not a decimal process ID.

pub fn lock_path(&self) -> &Path

pub fn state_path(&self) -> &Path

Trait Implementations

impl Debug for PidLock

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

Formats the value using the given formatter.

impl Drop for PidLock

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.