Struct ConfigLock 

pub struct ConfigLock { /* private fields */ }

An exclusive, process-safe lock over the configuration file

Hold this across a read-modify-write cycle — from before load_config until after save_config — so two concurrent alf processes cannot both load the same configuration and have the later save silently discard the earlier one’s changes.

The lock is advisory: it excludes other holders of this same lock, not an unrelated process or a hand edit of the file. It is released when the guard is dropped, which covers early returns, errors and panics alike, and the operating system releases it if the process dies while holding it, so a crash cannot leave the lock stuck.

Implementations

impl ConfigLock

pub fn acquire() -> Result<Self>

Acquire the lock, blocking until any other holder releases it

Errors

Returns an error if the configuration directory cannot be created, the lock file cannot be opened, or the underlying lock cannot be acquired.

Trait Implementations

impl Drop for ConfigLock

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.