Struct FileLock 

pub struct FileLock { /* private fields */ }

Advisory file lock (flock) for concurrent access.

Prevents concurrent mars sync from corrupting state. The lock is held start-to-end — acquired before fetching and held through completion. Dropping the FileLock closes the fd, which releases the advisory lock.

Implementations

impl FileLock

pub fn acquire(lock_path: &Path) -> Result<Self, MarsError>

Acquire an advisory file lock, blocking until available.

pub fn try_acquire(lock_path: &Path) -> Result<Option<Self>, MarsError>

Try to acquire the lock without blocking. Returns Ok(Some(lock)) if acquired, Ok(None) if already held by another process.