1 /*
2  * Copyright (c) 2014, 2020, 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 package gc;
25 
26 import jdk.test.lib.process.ProcessTools;
27 import jdk.test.lib.process.OutputAnalyzer;
28 import jdk.test.lib.Platform;
29 
30 /*
31  * @test TestCardTablePageCommits
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  * @run driver gc.TestCardTablePageCommits
38  */
39 public class TestCardTablePageCommits {
main(String args[])40     public static void main(String args[]) throws Exception {
41         // The test is run with a small heap to make sure all pages in the card
42         // table gets committed. Need 8 MB heap to trigger the bug on SPARC
43         // because of 8kB pages, assume 4 KB pages for all other CPUs.
44         String Xmx = "-Xmx4m";
45 
46         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
47             Xmx,
48             "-XX:NativeMemoryTracking=detail",
49             "-XX:+UseParallelGC",
50             "-version");
51         OutputAnalyzer output = new OutputAnalyzer(pb.start());
52         output.shouldHaveExitValue(0);
53     }
54 }
55