| /* |
| * Copyright 2015 Open Networking Laboratory |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onosproject.store.service; |
| |
| /** |
| * Distributed version of java.util.concurrent.atomic.AtomicLong. |
| */ |
| public interface AtomicCounter { |
| |
| /** |
| * Atomically increment by one the current value. |
| * |
| * @return updated value |
| */ |
| long incrementAndGet(); |
| |
| /** |
| * Atomically increment by one the current value. |
| * |
| * @return previous value |
| */ |
| long getAndIncrement(); |
| |
| /** |
| * Atomically adds the given value to the current value. |
| * |
| * @param delta the value to add |
| * @return previous value |
| */ |
| long getAndAdd(long delta); |
| |
| /** |
| * Atomically adds the given value to the current value. |
| * |
| * @param delta the value to add |
| * @return updated value |
| */ |
| long addAndGet(long delta); |
| |
| /** |
| * Returns the current value of the counter without modifying it. |
| * |
| * @return current value |
| */ |
| long get(); |
| } |