Went and looked back at this, now I remember why I wanted an extra Close() function.

In try, anywhere after

, an error will leave the file open and the lock will be marked unlocked -- which means Unlock won't clear the file. A similar situation exists with the lock function as well, and the windows implementation suffers the same issue.

Perhaps the best solution would be to just close the file if the lock/try failed, then a user doesn't need to worry so much about a close function.