1 /* 2 * Copyright (c) 2014, 2016, 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 import jdk.test.lib.JDKToolFinder; 25 import jdk.test.lib.process.ProcessTools; 26 import jdk.test.lib.process.OutputAnalyzer; 27 import jdk.test.lib.Platform; 28 29 /* 30 * @test TestCardTablePageCommits 31 * @key gc 32 * @bug 8059066 33 * @summary Tests that the card table does not commit the same page twice 34 * @requires vm.gc.Parallel 35 * @library /test/lib 36 * @modules java.base/jdk.internal.misc 37 * java.management 38 * @run driver TestCardTablePageCommits 39 */ 40 public class TestCardTablePageCommits { 41 public static void main(String args[]) throws Exception { 42 // The test is run with a small heap to make sure all pages in the card 43 // table gets committed. Need 8 MB heap to trigger the bug on SPARC 44 // because of 8kB pages, assume 4 KB pages for all other CPUs. 45 String Xmx = Platform.isSparc() ? "-Xmx8m" : "-Xmx4m"; 46 47 String[] opts = {Xmx, "-XX:NativeMemoryTracking=detail", "-XX:+UseParallelGC", "-version"}; 48 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(opts); 49 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 50 output.shouldHaveExitValue(0); 51 } 52 }