Obtain a lock for a file at the given path. If the file cannot be locked
within the given duration, an exception is thrown. The file will be created
if it does not yet exist. Deleting the file is not safe as another process
could create a new file with the same name.
The returned lock will get unlocked upon destruction.
Obtain a lock for a file at the given path. If the file cannot be locked within the given duration, an exception is thrown. The file will be created if it does not yet exist. Deleting the file is not safe as another process could create a new file with the same name. The returned lock will get unlocked upon destruction.