Class | Ferret::Store::Lock::LockError |
In: |
ext/r_store.c
|
Parent: | StandardError |
Document-class: Ferret::Store::Lock
A Lock is used to lock a data source so that not more than one output stream can access a data source at one time. It is possible that locks could be disabled. For example a read only index stored on a CDROM would have no need for a lock.
You can use a lock in two ways. Firstly:
write_lock = @directory.make_lock(LOCK_NAME) write_lock.obtain(WRITE_LOCK_TIME_OUT) ... # Do your file modifications # ... write_lock.release()
Alternatively you could use the while locked method. This ensures that the lock will be released once processing has finished.
write_lock = @directory.make_lock(LOCK_NAME) write_lock.while_locked(WRITE_LOCK_TIME_OUT) do ... # Do your file modifications # ... end