Showing the changes to java/pkg/sun/tools/jconsole/MemoryPoolProxy.java (1 of 18352 files). Show all
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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 | +} | |