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annotate test/gc/arguments/TestG1HeapRegionSize.java @ 11978:dae8324fc7d1

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8021879: G1: G1HeapRegionSize flag value not updated correctly Reviewed-by: tschatzl, jmasa
author brutisso
date Thu, 01 Aug 2013 09:35:04 +0200
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11978
dae8324fc7d1 8021879: G1: G1HeapRegionSize flag value not updated correctly
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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 /*
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25 * @test TestG1HeapRegionSize
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26 * @key gc
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27 * @bug 8021879
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28 * @summary Verify that the flag G1HeapRegionSize is updated properly
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29 * @run main/othervm -Xmx64m TestG1HeapRegionSize 1048576
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30 * @run main/othervm -XX:G1HeapRegionSize=2m -Xmx64m TestG1HeapRegionSize 2097152
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31 * @run main/othervm -XX:G1HeapRegionSize=3m -Xmx64m TestG1HeapRegionSize 2097152
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32 * @run main/othervm -XX:G1HeapRegionSize=64m -Xmx256m TestG1HeapRegionSize 33554432
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33 */
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34
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35 import sun.management.ManagementFactoryHelper;
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36 import com.sun.management.HotSpotDiagnosticMXBean;
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37 import com.sun.management.VMOption;
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38
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39 public class TestG1HeapRegionSize {
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40
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41 public static void main(String[] args) {
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42 HotSpotDiagnosticMXBean diagnostic = ManagementFactoryHelper.getDiagnosticMXBean();
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43
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44 VMOption option = diagnostic.getVMOption("UseG1GC");
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45 if (option.getValue().equals("false")) {
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46 System.out.println("Skipping this test. It is only a G1 test.");
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47 return;
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48 }
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49
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50 String expectedValue = getExpectedValue(args);
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51 option = diagnostic.getVMOption("G1HeapRegionSize");
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52 if (!expectedValue.equals(option.getValue())) {
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53 throw new RuntimeException("Wrong value for G1HeapRegionSize. Expected " + expectedValue + " but got " + option.getValue());
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54 }
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55 }
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56
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57 private static String getExpectedValue(String[] args) {
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58 if (args.length != 1) {
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59 throw new RuntimeException("Wrong number of arguments. Expected 1 but got " + args.length);
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60 }
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61 return args[0];
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62 }
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63
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64 }