Java examples for java.util.concurrent.atomic:AtomicInteger

Atomically clears a bit (or bits) for an AtomicInteger.

/*/*from ww w . ja v a2s .c om*/ * This file is part of Spout. * * Copyright (c) 2011 Spout LLC <http://www.spout.org/> * Spout is licensed under the Spout License Version 1. * * Spout is free software: you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by the Free * Software Foundation, either version 3 of the License, or (at your option) * any later version. * * In addition, 180 days after any changes are published, you can use the * software, incorporating those changes, under the terms of the MIT license, * as described in the Spout License Version 1. * * Spout 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 Lesser General Public License for * more details. * * You should have received a copy of the GNU Lesser General Public License, * the MIT license and the Spout License Version 1 along with this program. * If not, see <http://www.gnu.org/licenses/> for the GNU Lesser General Public * License and see <http://spout.in/licensev1> for the full license, including * the MIT license. */ //package com.java2s; import java.util.concurrent.atomic.AtomicInteger; public class Main { /** * Atomically clears a bit (or bits) for an AtomicInteger. If the bit(s) are already cleared, the method returns false<br> If any of the bits are zero, then the method will fail and clear none of * the bits * * @param i the AtomicInteger * @param mask the bits to clear should be ones * @return false if the bit were successfully cleared */ public static boolean clearBit(AtomicIntegeri, int mask) { boolean success = false; while (!success) { int current = i.get(); if ((current & mask) != mask) { return false; } int next = current & (~mask); success = i.compareAndSet(current, next); } return true; } }