1 /* 2 * Copyright (c) 2014, 2015, 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 TestConMarkCycleWB 26 * @bug 8065579 27 * @requires vm.gc=="null" | vm.gc=="G1" 28 * @library /testlibrary /../../test/lib 29 * @modules java.base/sun.misc 30 * java.compiler 31 * java.management 32 * jdk.jvmstat/sun.jvmstat.monitor 33 * @build ClassFileInstaller jdk.test.lib.* sun.hotspot.WhiteBox TestConcMarkCycleWB 34 * @run main ClassFileInstaller sun.hotspot.WhiteBox 35 * sun.hotspot.WhiteBox$WhiteBoxPermission 36 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:+UseG1GC TestConcMarkCycleWB 37 * @summary Verifies that ConcurrentMarking-related WB works properly 38 */ 39 import static jdk.test.lib.Asserts.assertFalse; 40 import static jdk.test.lib.Asserts.assertTrue; 41 import sun.hotspot.WhiteBox; 42 43 public class TestConcMarkCycleWB { 44 45 public static void main(String[] args) throws Exception { 46 WhiteBox wb = WhiteBox.getWhiteBox(); 47 48 wb.youngGC(); 49 assertTrue(wb.g1StartConcMarkCycle()); 50 while (wb.g1InConcurrentMark()) { 51 Thread.sleep(5); 52 } 53 54 wb.fullGC(); 55 assertTrue(wb.g1StartConcMarkCycle()); 56 while (wb.g1InConcurrentMark()) { 57 Thread.sleep(5); 58 } 59 assertTrue(wb.g1StartConcMarkCycle()); 60 } 61 }