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| 1 | +/* | |
| 2 | + * Copyright (c) 2003, 2011, 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.management; | |
| 27 | + | |
| 28 | +import java.lang.management.ManagementFactory; | |
| 29 | +import java.lang.management.MemoryManagerMXBean; | |
| 30 | +import java.lang.management.MemoryPoolMXBean; | |
| 31 | + | |
| 32 | +import javax.management.MBeanNotificationInfo; | |
| 33 | +import javax.management.ObjectName; | |
| 34 | + | |
| 35 | +/** | |
| 36 | + * Implementation class for a memory manager. | |
| 37 | + * Standard and committed hotspot-specific metrics if any. | |
| 38 | + * | |
| 39 | + * ManagementFactory.getMemoryManagerMXBeans() returns a list | |
| 40 | + * of instances of this class. | |
| 41 | + */ | |
| 42 | +class MemoryManagerImpl extends NotificationEmitterSupport | |
| 43 | + implements MemoryManagerMXBean { | |
| 44 | + | |
| 45 | + private final String name; | |
| 46 | + private final boolean isValid; | |
| 47 | + private MemoryPoolMXBean[] pools; | |
| 48 | + | |
| 49 | + MemoryManagerImpl(String name) { | |
| 50 | + this.name = name; | |
| 51 | + this.isValid = true; | |
| 52 | + this.pools = null; | |
| 53 | + } | |
| 54 | + | |
| 55 | + public String getName() { | |
| 56 | + return name; | |
| 57 | + } | |
| 58 | + | |
| 59 | + public boolean isValid() { | |
| 60 | + return isValid; | |
| 61 | + } | |
| 62 | + | |
| 63 | + public String[] getMemoryPoolNames() { | |
| 64 | + MemoryPoolMXBean[] ps = getMemoryPools(); | |
| 65 | + | |
| 66 | + String[] names = new String[ps.length]; | |
| 67 | + for (int i = 0; i < ps.length; i++) { | |
| 68 | + names[i] = ps[i].getName(); | |
| 69 | + } | |
| 70 | + return names; | |
| 71 | + } | |
| 72 | + | |
| 73 | + synchronized MemoryPoolMXBean[] getMemoryPools() { | |
| 74 | + if (pools == null) { | |
| 75 | + pools = getMemoryPools0(); | |
| 76 | + } | |
| 77 | + return pools; | |
| 78 | + } | |
| 79 | + private native MemoryPoolMXBean[] getMemoryPools0(); | |
| 80 | + | |
| 81 | + private MBeanNotificationInfo[] notifInfo = null; | |
| 82 | + public MBeanNotificationInfo[] getNotificationInfo() { | |
| 83 | + synchronized (this) { | |
| 84 | + if(notifInfo == null) { | |
| 85 | + notifInfo = new MBeanNotificationInfo[0]; | |
| 86 | + } | |
| 87 | + } | |
| 88 | + return notifInfo; | |
| 89 | + } | |
| 90 | + | |
| 91 | + public ObjectName getObjectName() { | |
| 92 | + return Util.newObjectName(ManagementFactory.MEMORY_MANAGER_MXBEAN_DOMAIN_TYPE, getName()); | |
| 93 | + } | |
| 94 | + | |
| 95 | +} | |