1 /*
2 * Copyright (c) 2003, 2015, 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 /*
25 * @test
26 * @bug 4858522
27 * @summary Basic unit test of OperatingSystemMXBean.getTotalSwapSpaceSize()
28 * @author Steve Bohne
29 * @author Jaroslav Bachorik
30 *
31 * @library /lib/testlibrary
32 *
33 * @build TestTotalSwap jdk.testlibrary.*
34 * @run main TestTotalSwap
35 */
36
37 /*
38 * This test tests the actual swap size on linux and solaris.
39 * The correct value should be checked manually:
40 * Solaris:
41 * 1. In a shell, enter the command: "swap -l"
42 * 2. The value (reported in blocks) is in the "blocks" column.
43 * Linux:
44 * 1. In a shell, enter the command: "cat /proc/meminfo"
45 * 2. The value (reported in bytes) is in "Swap" entry, "total" column.
46 * Windows NT/XP/2000:
47 * 1. Run Start->Accessories->System Tools->System Information.
48 * 2. The value (reported in Kbytes) is in the "Page File Space" entry
49 * Windows 98/ME:
50 * Unknown.
51 *
52 * Usage: GetTotalSwapSpaceSize <expected swap size | "sanity-only"> [trace]
53 */
54
55 import com.sun.management.OperatingSystemMXBean;
56 import java.lang.management.*;
57
58 import jdk.testlibrary.OSInfo;
59 import jdk.testlibrary.ProcessTools;
60 import jdk.testlibrary.OutputAnalyzer;
61
62 public class TestTotalSwap {
63
64 private static final OperatingSystemMXBean mbean =
65 (com.sun.management.OperatingSystemMXBean)
66 ManagementFactory.getOperatingSystemMXBean();
67
68 // Careful with these values.
69 // Min size for pass dynamically determined below.
70 // zero if no swap space is configured.
71 private static long min_size_for_pass = 0;
72 private static final long MAX_SIZE_FOR_PASS = Long.MAX_VALUE;
73
74 public static void main(String args[]) throws Throwable {
75 // yocto might ignore the request to report swap size in bytes
76 boolean swapInKB = mbean.getVersion().contains("yocto");
77
78 long expected_swap_size = getSwapSizeFromOs();
79
80 long min_size = mbean.getFreeSwapSpaceSize();
81 if (min_size > 0) {
82 min_size_for_pass = min_size;
83 }
84
85 long size = mbean.getTotalSwapSpaceSize();
86
87 System.out.println("Total swap space size in bytes: " + size);
88
89 if (expected_swap_size > -1) {
90 if (size != expected_swap_size) {
91 // try the expected size in kiloBytes
92 if (!(swapInKB && expected_swap_size * 1024 == size)) {
93 throw new RuntimeException("Expected total swap size : " +
94 expected_swap_size +
95 " but getTotalSwapSpaceSize returned: " +
96 size);
97 }
98 }
99 }
100
101 // sanity check
102 if (size < min_size_for_pass || size > MAX_SIZE_FOR_PASS) {
103 throw new RuntimeException("Total swap space size " +
104 "illegal value: " + size + " bytes " +
105 "(MIN = " + min_size_for_pass + "; " +
106 "MAX = " + MAX_SIZE_FOR_PASS + ")");
107 }
108
109 System.out.println("Test passed.");
110 }
111
112 private static long getSwapSizeFromOs() throws Throwable {
113 OSInfo.OSType os = OSInfo.getOSType();
114
115 switch (os) {
116 // total used free shared buffers cached
117 // Mem: 16533540864 13638467584 2895073280 534040576 1630248960 6236909568
118 // -/+ buffers/cache: 5771309056 10762231808
119 // Swap: 15999168512 0 15999168512
120
121 case LINUX: {
122 String swapSizeStr = ProcessTools.executeCommand("free", "-b")
123 .firstMatch("Swap:\\s+([0-9]+)\\s+.*", 1);
124 return Long.parseLong(swapSizeStr);
125 }
126 case SOLARIS: {
127 // swapfile dev swaplo blocks free
128 // /dev/dsk/c0t0d0s1 136,1 16 1638608 1600528
129 OutputAnalyzer out= ProcessTools.executeCommand(
130 "/usr/sbin/swap",
131 "-l"
132 );
133
134 long swapSize = 0;
135
136 for (String line : out.asLines()) {
137 if (line.contains("swapfile")) continue;
138
139 String[] vals = line.split("\\s+");
140 if (vals.length == 5) {
141 swapSize += Long.parseLong(vals[3]) * 512; // size is reported in 512b blocks
142 }
143 }
144
145 return swapSize;
146 }
147 case MACOSX: {
148 // total = 8192.00M used = 7471.11M free = 720.89M (encrypted)
149 String swapSizeStr = ProcessTools.executeCommand(
150 "/usr/sbin/sysctl",
151 "-n",
152 "vm.swapusage"
153 ).firstMatch("total\\s+=\\s+([0-9]+(\\.[0-9]+)?[Mm]?).*", 1);
154 if (swapSizeStr.toLowerCase().endsWith("m")) {
155 swapSizeStr = swapSizeStr.substring(0, swapSizeStr.length() - 1);
156 return (long)(Double.parseDouble(swapSizeStr) * 1024 * 1024); // size in MB
157 }
158 return (long)(Double.parseDouble(swapSizeStr) * 1024 * 1024);
159 }
160 default: {
161 System.err.println("Unsupported operating system: " + os);
162 }
163 }
164
165 return -1;
166 }
167 }