110 lines
3.9 KiB
Java
110 lines
3.9 KiB
Java
/*
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* Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/*
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*
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*
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* @bug 4858522
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* @summary Basic unit test of OperatingSystemMXBean.getTotalSwapSpaceSize()
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* @author Steve Bohne
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*/
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/*
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* This test tests the actual swap size on linux and solaris.
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* The correct value should be checked manually:
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* Solaris:
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* 1. In a shell, enter the command: "swap -l"
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* 2. The value (reported in blocks) is in the "blocks" column.
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* Linux:
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* 1. In a shell, enter the command: "cat /proc/meminfo"
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* 2. The value (reported in bytes) is in "Swap" entry, "total" column.
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* Windows NT/XP/2000:
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* 1. Run Start->Accessories->System Tools->System Information.
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* 2. The value (reported in Kbytes) is in the "Page File Space" entry
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* Windows 98/ME:
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* Unknown.
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*
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* Usage: GetTotalSwapSpaceSize <expected swap size | "sanity-only"> [trace]
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*/
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import com.sun.management.OperatingSystemMXBean;
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import java.lang.management.*;
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public class GetTotalSwapSpaceSize {
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private static OperatingSystemMXBean mbean =
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(com.sun.management.OperatingSystemMXBean)
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ManagementFactory.getOperatingSystemMXBean();
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// Careful with these values.
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// Min size for pass dynamically determined below.
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// zero if no swap space is configured.
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private static long min_size_for_pass = 0;
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private static final long MAX_SIZE_FOR_PASS = Long.MAX_VALUE;
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private static boolean trace = false;
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public static void main(String args[]) throws Exception {
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if (args.length > 1 && args[1].equals("trace")) {
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trace = true;
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}
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long expected_swap_size = 0;
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if (args.length < 1 || args.length > 2) {
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throw new IllegalArgumentException("Unexpected number of args " + args.length);
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}
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long min_size = mbean.getFreeSwapSpaceSize();
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if (min_size > 0) {
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min_size_for_pass = min_size;
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}
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long size = mbean.getTotalSwapSpaceSize();
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if (trace) {
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System.out.println("Total swap space size in bytes: " + size);
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}
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if (!args[0].matches("sanity-only")) {
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expected_swap_size = Long.parseLong(args[0]);
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if (size != expected_swap_size) {
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throw new RuntimeException("Expected total swap size : " +
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expected_swap_size +
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" but getTotalSwapSpaceSize returned: " +
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size);
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}
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}
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if (size < min_size_for_pass || size > MAX_SIZE_FOR_PASS) {
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throw new RuntimeException("Total swap space size " +
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"illegal value: " + size + " bytes " +
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"(MIN = " + min_size_for_pass + "; " +
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"MAX = " + MAX_SIZE_FOR_PASS + ")");
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}
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System.out.println("Test passed.");
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}
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}
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