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| 1 | /* | ||
| 2 | * Copyright (c) 2004, 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. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.tools.jconsole; | ||
| 27 | |||
| 28 | import javax.management.ObjectName; | ||
| 29 | import java.lang.management.ManagementFactory; | ||
| 30 | import java.lang.management.MemoryPoolMXBean; | ||
| 31 | import java.lang.management.MemoryUsage; | ||
| 32 | import com.sun.management.GarbageCollectorMXBean; | ||
| 33 | import com.sun.management.GcInfo; | ||
| 34 | import java.util.HashMap; | ||
| 35 | import java.util.Set; | ||
| 36 | import java.util.Map; | ||
| 37 | import java.util.Map.Entry; | ||
| 38 | |||
| 39 | import static java.lang.management.ManagementFactory.*; | ||
| 40 | |||
| 41 | public class MemoryPoolProxy { | ||
| 42 | private String poolName; | ||
| 43 | private ProxyClient client; | ||
| 44 | private ObjectName objName; | ||
| 45 | private MemoryPoolMXBean pool; | ||
| 46 | private Map<ObjectName,Long> gcMBeans; | ||
| 47 | private GcInfo lastGcInfo; | ||
| 48 | |||
| 49 | public MemoryPoolProxy(ProxyClient client, ObjectName poolName) throws java.io.IOException { | ||
| 50 | this.client = client; | ||
| 51 | this.objName = objName; | ||
| 52 | this.pool = client.getMXBean(poolName, MemoryPoolMXBean.class); | ||
| 53 | this.poolName = this.pool.getName(); | ||
| 54 | this.gcMBeans = new HashMap<ObjectName,Long>(); | ||
| 55 | this.lastGcInfo = null; | ||
| 56 | |||
| 57 | String[] mgrNames = pool.getMemoryManagerNames(); | ||
| 58 | for (String name : mgrNames) { | ||
| 59 | try { | ||
| 60 | ObjectName mbeanName = new ObjectName(GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE + | ||
| 61 | ",name=" + name); | ||
| 62 | if (client.isRegistered(mbeanName)) { | ||
| 63 | gcMBeans.put(mbeanName, new Long(0)); | ||
| 64 | } | ||
| 65 | } catch (Exception e) { | ||
| 66 | assert false; | ||
| 67 | } | ||
| 68 | |||
| 69 | } | ||
| 70 | } | ||
| 71 | |||
| 72 | public boolean isCollectedMemoryPool() { | ||
| 73 | return (gcMBeans.size() != 0); | ||
| 74 | } | ||
| 75 | |||
| 76 | public ObjectName getObjectName() { | ||
| 77 | return objName; | ||
| 78 | } | ||
| 79 | |||
| 80 | public MemoryPoolStat getStat() throws java.io.IOException { | ||
| 81 | long usageThreshold = (pool.isUsageThresholdSupported() | ||
| 82 | ? pool.getUsageThreshold() | ||
| 83 | : -1); | ||
| 84 | long collectThreshold = (pool.isCollectionUsageThresholdSupported() | ||
| 85 | ? pool.getCollectionUsageThreshold() | ||
| 86 | : -1); | ||
| 87 | long lastGcStartTime = 0; | ||
| 88 | long lastGcEndTime = 0; | ||
| 89 | MemoryUsage beforeGcUsage = null; | ||
| 90 | MemoryUsage afterGcUsage = null; | ||
| 91 | long gcId = 0; | ||
| 92 | if (lastGcInfo != null) { | ||
| 93 | gcId = lastGcInfo.getId(); | ||
| 94 | lastGcStartTime = lastGcInfo.getStartTime(); | ||
| 95 | lastGcEndTime = lastGcInfo.getEndTime(); | ||
| 96 | beforeGcUsage = lastGcInfo.getMemoryUsageBeforeGc().get(poolName); | ||
| 97 | afterGcUsage = lastGcInfo.getMemoryUsageAfterGc().get(poolName); | ||
| 98 | } | ||
| 99 | |||
| 100 | Set<Map.Entry<ObjectName,Long>> set = gcMBeans.entrySet(); | ||
| 101 | for (Map.Entry<ObjectName,Long> e : set) { | ||
| 102 | GarbageCollectorMXBean gc = | ||
| 103 | client.getMXBean(e.getKey(), | ||
| 104 | com.sun.management.GarbageCollectorMXBean.class); | ||
| 105 | Long gcCount = e.getValue(); | ||
| 106 | Long newCount = gc.getCollectionCount(); | ||
| 107 | if (newCount > gcCount) { | ||
| 108 | gcMBeans.put(e.getKey(), new Long(newCount)); | ||
| 109 | lastGcInfo = gc.getLastGcInfo(); | ||
| 110 | if (lastGcInfo.getEndTime() > lastGcEndTime) { | ||
| 111 | gcId = lastGcInfo.getId(); | ||
| 112 | lastGcStartTime = lastGcInfo.getStartTime(); | ||
| 113 | lastGcEndTime = lastGcInfo.getEndTime(); | ||
| 114 | beforeGcUsage = lastGcInfo.getMemoryUsageBeforeGc().get(poolName); | ||
| 115 | afterGcUsage = lastGcInfo.getMemoryUsageAfterGc().get(poolName); | ||
| 116 | assert(beforeGcUsage != null); | ||
| 117 | assert(afterGcUsage != null); | ||
| 118 | } | ||
| 119 | } | ||
| 120 | } | ||
| 121 | |||
| 122 | MemoryUsage usage = pool.getUsage(); | ||
| 123 | return new MemoryPoolStat(poolName, | ||
| 124 | usageThreshold, | ||
| 125 | usage, | ||
| 126 | gcId, | ||
| 127 | lastGcStartTime, | ||
| 128 | lastGcEndTime, | ||
| 129 | collectThreshold, | ||
| 130 | beforeGcUsage, | ||
| 131 | afterGcUsage); | ||
| 132 | } | ||
| 133 | } | ||