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 * 29 * @library /lib/testlibrary 30 * @build TestTotalSwap jdk.testlibrary.* 31 * @run main TestTotalSwap 32 * 33 * @author Steve Bohne 34 * @author Jaroslav Bachorik 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 76 long expected_swap_size = getSwapSizeFromOs(); 77 78 long min_size = mbean.getFreeSwapSpaceSize(); 79 if (min_size > 0) { 80 min_size_for_pass = min_size; 81 } 82 83 long size = mbean.getTotalSwapSpaceSize(); 84 85 System.out.println("Total swap space size in bytes: " + size); 86 87 if (expected_swap_size > -1) { 88 if (size != expected_swap_size) { 89 throw new RuntimeException("Expected total swap size : " + 90 expected_swap_size + 91 " but getTotalSwapSpaceSize returned: " + 92 size); 93 } 94 } 95 96 // sanity check 97 if (size < min_size_for_pass || size > MAX_SIZE_FOR_PASS) { 98 throw new RuntimeException("Total swap space size " + 99 "illegal value: " + size + " bytes " + 100 "(MIN = " + min_size_for_pass + "; " + 101 "MAX = " + MAX_SIZE_FOR_PASS + ")"); 102 } 103 104 System.out.println("Test passed."); 105 } 106 107 private static long getSwapSizeFromOs() throws Throwable { 108 OSInfo.OSType os = OSInfo.getOSType(); 109 110 switch (os) { 111 // total used free shared buffers cached 112 // Mem: 16533540864 13638467584 2895073280 534040576 1630248960 6236909568 113 // -/+ buffers/cache: 5771309056 10762231808 114 // Swap: 15999168512 0 15999168512 115 116 case LINUX: { 117 String swapSizeStr = ProcessTools.executeCommand("free", "-b") 118 .firstMatch("Swap:\\s+([0-9]+)\\s+.*", 1); 119 return Long.parseLong(swapSizeStr); 120 } 121 case SOLARIS: { 122 // swapfile dev swaplo blocks free 123 // /dev/dsk/c0t0d0s1 136,1 16 1638608 1600528 124 OutputAnalyzer out= ProcessTools.executeCommand( 125 "/usr/sbin/swap", 126 "-l" 127 ); 128 129 long swapSize = 0; 130 131 for (String line : out.asLines()) { 132 if (line.contains("swapfile")) continue; 133 134 String[] vals = line.split("\\s+"); 135 if (vals.length == 5) { 136 swapSize += Long.parseLong(vals[3]) * 512; // size is reported in 512b blocks 137 } 138 } 139 140 return swapSize; 141 } 142 case MACOSX: { 143 // total = 8192.00M used = 7471.11M free = 720.89M (encrypted) 144 String swapSizeStr = ProcessTools.executeCommand( 145 "/usr/sbin/sysctl", 146 "-n", 147 "vm.swapusage" 148 ).firstMatch("total\\s+=\\s+([0-9]+(\\.[0-9]+)?[Mm]?).*", 1); 149 if (swapSizeStr.toLowerCase().endsWith("m")) { 150 swapSizeStr = swapSizeStr.substring(0, swapSizeStr.length() - 1); 151 return (long)(Double.parseDouble(swapSizeStr) * 1024 * 1024); // size in MB 152 } 153 return (long)(Double.parseDouble(swapSizeStr) * 1024 * 1024); 154 } 155 default: { 156 System.err.println("Unsupported operating system: " + os); 157 } 158 } 159 160 return -1; 161 } 162 }