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8074
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1 /*
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 /* @test TestG1ZeroPGCTJcmdThreadPrint
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25 * @key gc
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26 * @bug 8005875
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27 * @summary Use jcmd to generate a thread dump of a Java program being run with PGCT=0 to verify 8005875
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28 * @library /testlibrary
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29 * @run main/othervm -XX:+UseG1GC -XX:ParallelGCThreads=0 -XX:+IgnoreUnrecognizedVMOptions TestG1ZeroPGCTJcmdThreadPrint
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30 */
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31
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32 import com.oracle.java.testlibrary.*;
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33
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34 public class TestG1ZeroPGCTJcmdThreadPrint {
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35 public static void main(String args[]) throws Exception {
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36
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37 // Grab the pid from the current java process
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38 String pid = Integer.toString(ProcessTools.getProcessId());
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39
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40 // Create a ProcessBuilder
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41 ProcessBuilder pb = new ProcessBuilder();
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42
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43 // Run jcmd <pid> Thread.print
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44 pb.command(JDKToolFinder.getJDKTool("jcmd"), pid, "Thread.print");
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45
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46 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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47
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48 // There shouldn't be a work gang for concurrent marking.
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49 output.shouldNotContain("G1 Parallel Marking Threads");
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50
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51 // Make sure we didn't crash
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52 output.shouldHaveExitValue(0);
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53 }
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54 }
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