J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * @bug 4982289 |
| 26 | * @summary Utility class. |
| 27 | * @author Mandy Chung |
| 28 | */ |
| 29 | |
| 30 | import java.lang.management.*; |
| 31 | import java.util.*; |
| 32 | |
| 33 | public class MemoryUtil { |
| 34 | |
| 35 | private static String INDENT = " "; |
| 36 | private static String formatSize(String name, long value) { |
| 37 | StringBuffer buf = new StringBuffer(name + " = " + value); |
| 38 | if (value > 0) { |
| 39 | buf.append(" (" + (value >> 10) + "K)"); |
| 40 | } |
| 41 | return buf.toString(); |
| 42 | } |
| 43 | public static void printMemoryUsage(MemoryUsage usage) { |
| 44 | System.out.println(INDENT + formatSize("Initial size ", usage.getInit())); |
| 45 | System.out.println(INDENT + formatSize("Used size ", usage.getUsed())); |
| 46 | System.out.println(INDENT + formatSize("Committd size ", usage.getCommitted())); |
| 47 | System.out.println(INDENT + formatSize("Max size ", usage.getMax())); |
| 48 | } |
| 49 | |
| 50 | public static void printMemoryPool(MemoryPoolMXBean pool) { |
| 51 | System.out.println(INDENT + "Memory Pool name: " + pool.getName()); |
| 52 | System.out.println(INDENT + "Type: " + pool.getType()); |
| 53 | System.out.println(INDENT + "Memory Usage: " + |
| 54 | pool.getUsage()); |
| 55 | System.out.println(INDENT + "Threshold: " + |
| 56 | (pool.isUsageThresholdSupported() ? pool.getUsageThreshold() : -1)); |
| 57 | System.out.print(INDENT + "Manager = ["); |
| 58 | String[] mgrs = pool.getMemoryManagerNames(); |
| 59 | for (int i = 0; i < mgrs.length; i++) { |
| 60 | System.out.print(mgrs[i]); |
| 61 | if (i < (mgrs.length - 1)) { |
| 62 | System.out.print(" | "); |
| 63 | } |
| 64 | } |
| 65 | System.out.println("]"); |
| 66 | } |
| 67 | |
| 68 | public static void printMemoryPools(List pools) { |
| 69 | ListIterator iter = pools.listIterator(); |
| 70 | System.out.println(INDENT + "Number of memory pools = " + pools.size()); |
| 71 | while (iter.hasNext()) { |
| 72 | MemoryPoolMXBean pool = (MemoryPoolMXBean) iter.next(); |
| 73 | printMemoryPool(pool); |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | public static void printMemoryManager(MemoryManagerMXBean mgr) { |
| 78 | if (mgr instanceof GarbageCollectorMXBean) { |
| 79 | GarbageCollectorMXBean gc = (GarbageCollectorMXBean) mgr; |
| 80 | System.out.println(INDENT + "Garbage Collector name: " + gc.getName()); |
| 81 | System.out.println(INDENT + "GC Count: " + gc.getCollectionCount()); |
| 82 | System.out.println(INDENT + "GC Time : " + gc.getCollectionTime()); |
| 83 | } else { |
| 84 | System.out.println(INDENT + "Memory Manager name: " + mgr.getName()); |
| 85 | } |
| 86 | |
| 87 | System.out.print("Pool = ["); |
| 88 | String[] pools = mgr.getMemoryPoolNames(); |
| 89 | for (int i = 0; i < pools.length; i++) { |
| 90 | System.out.print(INDENT + pools[i]); |
| 91 | if (i < (pools.length - 1)) { |
| 92 | System.out.print(" | "); |
| 93 | } |
| 94 | } |
| 95 | System.out.println("]"); |
| 96 | } |
| 97 | |
| 98 | public static void printMemoryManagers(List managers) { |
| 99 | ListIterator iter = managers.listIterator(); |
| 100 | System.out.println(INDENT + "Number of memory managers = " + |
| 101 | managers.size()); |
| 102 | while (iter.hasNext()) { |
| 103 | MemoryManagerMXBean mgr = (MemoryManagerMXBean) iter.next(); |
| 104 | printMemoryManager(mgr); |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | public static void printMemoryNotificationInfo |
| 109 | (MemoryNotificationInfo minfo, String type) { |
| 110 | System.out.print("Notification for " + minfo.getPoolName()); |
| 111 | System.out.print(" [type = " + type); |
| 112 | System.out.println(" count = " + minfo.getCount() + "]"); |
| 113 | System.out.println(INDENT + "usage = " + minfo.getUsage()); |
| 114 | } |
| 115 | } |