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22975
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1 /*
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2 * Copyright (c) 2014, 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
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26 * @summary Using WhiteBox to get VM page size
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27 * @library /testlibrary /testlibrary/whitebox
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28 * @build ReadVMPageSize
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29 * @run main ClassFileInstaller sun.hotspot.WhiteBox
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30 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI ReadVMPageSize
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31 */
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32
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33 import com.oracle.java.testlibrary.*;
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34 import sun.hotspot.WhiteBox;
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35
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36 public class ReadVMPageSize {
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37 public static void main(String args[]) throws Exception {
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38 WhiteBox wb = WhiteBox.getWhiteBox();
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39 int pageSize = wb.getVMPageSize();
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40 if (pageSize < 0) {
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41 throw new Exception("pageSize < 0");
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42 } else {
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43 System.out.println("Page size = " + pageSize);
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44 }
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45 }
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46 }
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