1 /* 2 * Copyright (c) 2014, 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 /testlibrary/whitebox 29 * @build ClassFileInstaller com.oracle.java.testlibrary.* sun.hotspot.WhiteBox TestConcMarkCycleWB 30 * @run main ClassFileInstaller sun.hotspot.WhiteBox 31 * sun.hotspot.WhiteBox$WhiteBoxPermission 32 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:+UseG1GC TestConcMarkCycleWB 33 * @summary Verifies that ConcurrentMarking-related WB works properly 34 */ 35 import static com.oracle.java.testlibrary.Asserts.assertFalse; 36 import static com.oracle.java.testlibrary.Asserts.assertTrue; 37 import sun.hotspot.WhiteBox; 38 39 public class TestConcMarkCycleWB { 40 41 public static void main(String[] args) throws Exception { 42 WhiteBox wb = WhiteBox.getWhiteBox(); 43 44 wb.youngGC(); 45 assertTrue(wb.g1StartConcMarkCycle()); 46 while (wb.g1InConcurrentMark()) { 47 Thread.sleep(5); 48 } 49 50 wb.fullGC(); 51 assertTrue(wb.g1StartConcMarkCycle()); 52 while (wb.g1InConcurrentMark()) { 53 Thread.sleep(5); 54 } 55 assertTrue(wb.g1StartConcMarkCycle()); 56 } 57 }