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comparison test/gc/TestG1ZeroPGCTJcmdThreadPrint.java @ 8074:b9c5e46bf915

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8008188: Add regression test for 8005875 Summary: Add regression test for crash seen in 8005875. Test is run with G1 and PGCT=0 and issues "jcmd <pid> Thread.print" against itself. Without the fix for 8005875 the test will crash. Reviewed-by: brutisso
author johnc
date Wed, 20 Feb 2013 12:52:13 -0800
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8073:ccc57295818b 8074:b9c5e46bf915
1 /*
2 * Copyright (c) 2013, 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 /* @test TestG1ZeroPGCTJcmdThreadPrint
25 * @key gc
26 * @bug 8005875
27 * @summary Use jcmd to generate a thread dump of a Java program being run with PGCT=0 to verify 8005875
28 * @library /testlibrary
29 * @run main/othervm -XX:+UseG1GC -XX:ParallelGCThreads=0 -XX:+IgnoreUnrecognizedVMOptions TestG1ZeroPGCTJcmdThreadPrint
30 */
31
32 import com.oracle.java.testlibrary.*;
33
34 public class TestG1ZeroPGCTJcmdThreadPrint {
35 public static void main(String args[]) throws Exception {
36
37 // Grab the pid from the current java process
38 String pid = Integer.toString(ProcessTools.getProcessId());
39
40 // Create a ProcessBuilder
41 ProcessBuilder pb = new ProcessBuilder();
42
43 // Run jcmd <pid> Thread.print
44 pb.command(JDKToolFinder.getJDKTool("jcmd"), pid, "Thread.print");
45
46 OutputAnalyzer output = new OutputAnalyzer(pb.start());
47
48 // There shouldn't be a work gang for concurrent marking.
49 output.shouldNotContain("G1 Parallel Marking Threads");
50
51 // Make sure we didn't crash
52 output.shouldHaveExitValue(0);
53 }
54 }