1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2016 Azul Systems, Inc. All Rights Reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 */ 24 25 /** 26 * @test TestOnSpinWaitEnableDisable 27 * @summary Test to ensure basic functioning of java.lang.Thread.onSpinWait 28 * @bug 8157683 29 * 30 * @run main compiler.onSpinWait.TestOnSpinWaitEnableDisable 31 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:DisableIntrinsic=_onSpinWait 32 * compiler.onSpinWait.TestOnSpinWaitEnableDisable 33 */ 34 35 package compiler.onSpinWait; 36 37 public class TestOnSpinWaitEnableDisable { main(String[] args)38 public static void main(String[] args) { 39 for (int i = 0; i < 50_000; i++) { 40 java.lang.Thread.onSpinWait(); 41 } 42 } 43 } 44