| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You 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.apache.geode.internal.concurrent; |
| |
| /** |
| * These methods are the same ones on the JDK 5 version java.util.concurrent.atomic.AtomicLong. Note |
| * that unlike AtomicLong this interface does not support <code>java.lang.Number</code>. |
| * |
| * @deprecated used AtomicLong instead |
| */ |
| public interface AL { |
| /** |
| * Gets the current value. |
| * |
| * @return the current value |
| */ |
| long get(); |
| |
| /** |
| * Sets to the given value. |
| * |
| * @param newValue the new value |
| */ |
| void set(long newValue); |
| |
| /** |
| * Atomically sets to the given value and returns the old value. |
| * |
| * @param newValue the new value |
| * @return the previous value |
| */ |
| long getAndSet(long newValue); |
| |
| /** |
| * Atomically sets the value to the given updated value if the current value {@code ==} the |
| * expected value. |
| * |
| * @param expect the expected value |
| * @param update the new value |
| * @return true if successful. False return indicates that the actual value was not equal to the |
| * expected value. |
| */ |
| boolean compareAndSet(long expect, long update); |
| |
| /** |
| * Atomically sets the value to the given updated value if the current value {@code ==} the |
| * expected value. |
| * |
| * <p> |
| * May <a href="package-summary.html#Spurious">fail spuriously</a> and does not provide ordering |
| * guarantees, so is only rarely an appropriate alternative to {@code compareAndSet}. |
| * |
| * @param expect the expected value |
| * @param update the new value |
| * @return true if successful. |
| */ |
| boolean weakCompareAndSet(long expect, long update); |
| |
| /** |
| * Atomically increments by one the current value. |
| * |
| * @return the previous value |
| */ |
| long getAndIncrement(); |
| |
| /** |
| * Atomically decrements by one the current value. |
| * |
| * @return the previous value |
| */ |
| long getAndDecrement(); |
| |
| /** |
| * Atomically adds the given value to the current value. |
| * |
| * @param delta the value to add |
| * @return the previous value |
| */ |
| long getAndAdd(long delta); |
| |
| /** |
| * Atomically increments by one the current value. |
| * |
| * @return the updated value |
| */ |
| long incrementAndGet(); |
| |
| /** |
| * Atomically decrements by one the current value. |
| * |
| * @return the updated value |
| */ |
| long decrementAndGet(); |
| |
| /** |
| * Atomically adds the given value to the current value. |
| * |
| * @param delta the value to add |
| * @return the updated value |
| */ |
| long addAndGet(long delta); |
| |
| /** |
| * Atomically sets the value to the given updated value if the given value {@code >} the current |
| * value. This could be sub-optimat when the update being done by multiple thread is not in in an |
| * incremental fashion. |
| * |
| */ |
| boolean setIfGreater(long update); |
| } |