/*
* Copyright (c) 2004, 2008, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.management;
import java.lang.management.MemoryNotificationInfo;
import java.lang.management.MemoryUsage;
import javax.management.openmbean.CompositeData;
import javax.management.openmbean.CompositeType;
import javax.management.openmbean.CompositeDataSupport;
import javax.management.openmbean.OpenDataException;
/**
* A CompositeData for MemoryNotificationInfo for the local management support.
* This class avoids the performance penalty paid to the
* construction of a CompositeData use in the local case.
*/
public class MemoryNotifInfoCompositeData extends LazyCompositeData {
private final MemoryNotificationInfo memoryNotifInfo;
private MemoryNotifInfoCompositeData(MemoryNotificationInfo info) {
this.memoryNotifInfo = info;
}
public MemoryNotificationInfo getMemoryNotifInfo() {
return memoryNotifInfo;
}
public static CompositeData toCompositeData(MemoryNotificationInfo info) {
MemoryNotifInfoCompositeData mnicd =
new MemoryNotifInfoCompositeData(info);
return mnicd.getCompositeData();
}
protected CompositeData getCompositeData() {
// CONTENTS OF THIS ARRAY MUST BE SYNCHRONIZED WITH
// memoryNotifInfoItemNames!
final Object[] memoryNotifInfoItemValues = {
memoryNotifInfo.getPoolName(),
MemoryUsageCompositeData.toCompositeData(memoryNotifInfo.getUsage()),
new Long(memoryNotifInfo.getCount()),
};
try {
return new CompositeDataSupport(memoryNotifInfoCompositeType,
memoryNotifInfoItemNames,
memoryNotifInfoItemValues);
} catch (OpenDataException e) {
// Should never reach here
throw new AssertionError(e);
}
}
private static final CompositeType memoryNotifInfoCompositeType;
static {
try {
memoryNotifInfoCompositeType = (CompositeType)
MappedMXBeanType.toOpenType(MemoryNotificationInfo.class);
} catch (OpenDataException e) {
// Should never reach here
throw new AssertionError(e);
}
}
private static final String POOL_NAME = "poolName";
private static final String USAGE = "usage";
private static final String COUNT = "count";
private static final String[] memoryNotifInfoItemNames = {
POOL_NAME,
USAGE,
COUNT,
};
public static String getPoolName(CompositeData cd) {
String poolname = getString(cd, POOL_NAME);
if (poolname == null) {
throw new IllegalArgumentException("Invalid composite data: " +
"Attribute " + POOL_NAME + " has null value");
}
return poolname;
}
public static MemoryUsage getUsage(CompositeData cd) {
CompositeData usageData = (CompositeData) cd.get(USAGE);
return MemoryUsage.from(usageData);
}
public static long getCount(CompositeData cd) {
return getLong(cd, COUNT);
}
/** Validate if the input CompositeData has the expected
* CompositeType (i.e. contain all attributes with expected
* names and types).
*/
public static void validateCompositeData(CompositeData cd) {
if (cd == null) {
throw new NullPointerException("Null CompositeData");
}
if (!isTypeMatched(memoryNotifInfoCompositeType, cd.getCompositeType())) {
throw new IllegalArgumentException(
"Unexpected composite type for MemoryNotificationInfo");
}
}
private static final long serialVersionUID = -1805123446483771291L;
}