| /* |
| * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package org.graalvm.compiler.word; |
| |
| /** |
| * A {@link Unsigned} value that may be updated atomically. See the |
| * {@link java.util.concurrent.atomic} package specification for description of the properties of |
| * atomic variables. |
| */ |
| public class AtomicUnsigned extends AtomicWord<Unsigned> { |
| |
| /** |
| * Atomically adds the given value to the current value. |
| * |
| * @param delta the value to add |
| * @return the previous value |
| */ |
| public final Unsigned getAndAdd(Unsigned delta) { |
| return Word.unsigned(value.getAndAdd(delta.rawValue())); |
| } |
| |
| /** |
| * Atomically adds the given value to the current value. |
| * |
| * @param delta the value to add |
| * @return the updated value |
| */ |
| public final Unsigned addAndGet(Unsigned delta) { |
| return Word.unsigned(value.addAndGet(delta.rawValue())); |
| } |
| |
| /** |
| * Atomically subtracts the given value from the current value. |
| * |
| * @param delta the value to add |
| * @return the previous value |
| */ |
| public final Unsigned getAndSubtract(Unsigned delta) { |
| return Word.unsigned(value.getAndAdd(-delta.rawValue())); |
| } |
| |
| /** |
| * Atomically subtracts the given value from the current value. |
| * |
| * @param delta the value to add |
| * @return the updated value |
| */ |
| public final Unsigned subtractAndGet(Unsigned delta) { |
| return Word.unsigned(value.addAndGet(-delta.rawValue())); |
| } |
| } |