1 /* 2 * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 6275329 27 * @summary lazySet methods 28 */ 29 30 import java.util.concurrent.atomic.AtomicBoolean; 31 import java.util.concurrent.atomic.AtomicInteger; 32 import java.util.concurrent.atomic.AtomicIntegerArray; 33 import java.util.concurrent.atomic.AtomicIntegerFieldUpdater; 34 import java.util.concurrent.atomic.AtomicLong; 35 import java.util.concurrent.atomic.AtomicLongArray; 36 import java.util.concurrent.atomic.AtomicLongFieldUpdater; 37 import java.util.concurrent.atomic.AtomicReference; 38 import java.util.concurrent.atomic.AtomicReferenceArray; 39 import java.util.concurrent.atomic.AtomicReferenceFieldUpdater; 40 41 public class Lazy { 42 volatile int ii; 43 volatile long ll; 44 volatile Boolean bb; 45 static final Lazy z = new Lazy(); 46 main(String[] args)47 public static void main(String[] args) throws Exception { 48 final AtomicBoolean b = new AtomicBoolean(); 49 final AtomicInteger i = new AtomicInteger(); 50 final AtomicLong l = new AtomicLong(); 51 final AtomicReference<Long> r = new AtomicReference<>(); 52 53 final AtomicIntegerArray ia = new AtomicIntegerArray(1); 54 final AtomicLongArray la = new AtomicLongArray(1); 55 final AtomicReferenceArray<Long> ra = new AtomicReferenceArray<>(1); 56 57 final AtomicIntegerFieldUpdater<Lazy> iu = 58 AtomicIntegerFieldUpdater.newUpdater(Lazy.class, "ii"); 59 final AtomicLongFieldUpdater<Lazy> lu = 60 AtomicLongFieldUpdater.newUpdater(Lazy.class, "ll"); 61 final AtomicReferenceFieldUpdater<Lazy,Boolean> ru = 62 AtomicReferenceFieldUpdater.newUpdater(Lazy.class, 63 Boolean.class, "bb"); 64 65 Thread[] threads = { 66 new Thread() { public void run() { b.lazySet(true); }}, 67 new Thread() { public void run() { i.lazySet(2); }}, 68 new Thread() { public void run() { l.lazySet(3L); }}, 69 new Thread() { public void run() { r.lazySet(9L); }}, 70 new Thread() { public void run() { ia.lazySet(0,4); }}, 71 new Thread() { public void run() { la.lazySet(0,5L); }}, 72 new Thread() { public void run() { ra.lazySet(0,6L); }}, 73 new Thread() { public void run() { iu.lazySet(z,7); }}, 74 new Thread() { public void run() { lu.lazySet(z,8L); }}, 75 new Thread() { public void run() { ru.lazySet(z,true); }}}; 76 77 for (Thread t : threads) t.start(); 78 for (Thread t : threads) t.join(); 79 80 if (! (b.get() == true && 81 i.get() == 2 && 82 l.get() == 3L && 83 r.get() == 9L && 84 ia.get(0) == 4 && 85 la.get(0) == 5L && 86 ra.get(0) == 6L && 87 z.ii == 7 && 88 z.ll == 8L && 89 z.bb == true)) 90 throw new Exception("lazySet failed"); 91 } 92 } 93