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 }