Function simplelock::lock_until_finished

pub fn lock_until_finished<R: Any>(
    lock: &mut impl Lock, 
    op: impl FnOnce() -> R + UnwindSafe
) -> SimpleLockResult<R>

Simple utility function for wrapping a closure with a lock. Since we use tempfile() behind the scenes, we can't reference a single file or a path. we instead ask for a directory, and any file in that directory means the lock is locked, otherwise we'll create a file which will either be cleaned up by close or via the OS if all handlers are closed.

Example

let result = lock_until_finished(
    &FakeLock::default(),
    || {
        // do something needing a lock.
    }
);