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package sun.management;

import java.lang.management.ManagementFactory;
import java.lang.management.MemoryManagerMXBean;
import java.lang.management.MemoryPoolMXBean;

import javax.management.MBeanNotificationInfo;
import javax.management.ObjectName;

Implementation class for a memory manager. Standard and committed hotspot-specific metrics if any. ManagementFactory.getMemoryManagerMXBeans() returns a list of instances of this class.
/** * Implementation class for a memory manager. * Standard and committed hotspot-specific metrics if any. * * ManagementFactory.getMemoryManagerMXBeans() returns a list * of instances of this class. */
class MemoryManagerImpl extends NotificationEmitterSupport implements MemoryManagerMXBean { private final String name; private final boolean isValid; private MemoryPoolMXBean[] pools; MemoryManagerImpl(String name) { this.name = name; this.isValid = true; this.pools = null; } public String getName() { return name; } public boolean isValid() { return isValid; } public String[] getMemoryPoolNames() { MemoryPoolMXBean[] ps = getMemoryPools(); String[] names = new String[ps.length]; for (int i = 0; i < ps.length; i++) { names[i] = ps[i].getName(); } return names; } synchronized MemoryPoolMXBean[] getMemoryPools() { if (pools == null) { pools = getMemoryPools0(); } return pools; } private native MemoryPoolMXBean[] getMemoryPools0(); private MBeanNotificationInfo[] notifInfo = null; public MBeanNotificationInfo[] getNotificationInfo() { synchronized (this) { if(notifInfo == null) { notifInfo = new MBeanNotificationInfo[0]; } } return notifInfo; } public ObjectName getObjectName() { return Util.newObjectName(ManagementFactory.MEMORY_MANAGER_MXBEAN_DOMAIN_TYPE, getName()); } }