118 lines
4.7 KiB
Java
118 lines
4.7 KiB
Java
/*
|
|
* Copyright (c) 2004, 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.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* @bug 4982289
|
|
* @summary Utility class.
|
|
* @author Mandy Chung
|
|
*/
|
|
|
|
import java.lang.management.*;
|
|
import java.util.*;
|
|
|
|
public class MemoryUtil {
|
|
|
|
private static String INDENT = " ";
|
|
private static String formatSize(String name, long value) {
|
|
StringBuffer buf = new StringBuffer(name + " = " + value);
|
|
if (value > 0) {
|
|
buf.append(" (" + (value >> 10) + "K)");
|
|
}
|
|
return buf.toString();
|
|
}
|
|
public static void printMemoryUsage(MemoryUsage usage) {
|
|
System.out.println(INDENT + formatSize("Initial size ", usage.getInit()));
|
|
System.out.println(INDENT + formatSize("Used size ", usage.getUsed()));
|
|
System.out.println(INDENT + formatSize("Committd size ", usage.getCommitted()));
|
|
System.out.println(INDENT + formatSize("Max size ", usage.getMax()));
|
|
}
|
|
|
|
public static void printMemoryPool(MemoryPoolMXBean pool) {
|
|
System.out.println(INDENT + "Memory Pool name: " + pool.getName());
|
|
System.out.println(INDENT + "Type: " + pool.getType());
|
|
System.out.println(INDENT + "Memory Usage: " +
|
|
pool.getUsage());
|
|
System.out.println(INDENT + "Threshold: " +
|
|
(pool.isUsageThresholdSupported() ? pool.getUsageThreshold() : -1));
|
|
System.out.println(INDENT + "ThresholdCount: " +
|
|
(pool.isUsageThresholdSupported() ? pool.getUsageThresholdCount() : -1));
|
|
System.out.print(INDENT + "Manager = [");
|
|
String[] mgrs = pool.getMemoryManagerNames();
|
|
for (int i = 0; i < mgrs.length; i++) {
|
|
System.out.print(mgrs[i]);
|
|
if (i < (mgrs.length - 1)) {
|
|
System.out.print(" | ");
|
|
}
|
|
}
|
|
System.out.println("]");
|
|
}
|
|
|
|
public static void printMemoryPools(List pools) {
|
|
ListIterator iter = pools.listIterator();
|
|
System.out.println(INDENT + "Number of memory pools = " + pools.size());
|
|
while (iter.hasNext()) {
|
|
MemoryPoolMXBean pool = (MemoryPoolMXBean) iter.next();
|
|
printMemoryPool(pool);
|
|
}
|
|
}
|
|
|
|
public static void printMemoryManager(MemoryManagerMXBean mgr) {
|
|
if (mgr instanceof GarbageCollectorMXBean) {
|
|
GarbageCollectorMXBean gc = (GarbageCollectorMXBean) mgr;
|
|
System.out.println(INDENT + "Garbage Collector name: " + gc.getName());
|
|
System.out.println(INDENT + "GC Count: " + gc.getCollectionCount());
|
|
System.out.println(INDENT + "GC Time : " + gc.getCollectionTime());
|
|
} else {
|
|
System.out.println(INDENT + "Memory Manager name: " + mgr.getName());
|
|
}
|
|
|
|
System.out.print("Pool = [");
|
|
String[] pools = mgr.getMemoryPoolNames();
|
|
for (int i = 0; i < pools.length; i++) {
|
|
System.out.print(INDENT + pools[i]);
|
|
if (i < (pools.length - 1)) {
|
|
System.out.print(" | ");
|
|
}
|
|
}
|
|
System.out.println("]");
|
|
}
|
|
|
|
public static void printMemoryManagers(List managers) {
|
|
ListIterator iter = managers.listIterator();
|
|
System.out.println(INDENT + "Number of memory managers = " +
|
|
managers.size());
|
|
while (iter.hasNext()) {
|
|
MemoryManagerMXBean mgr = (MemoryManagerMXBean) iter.next();
|
|
printMemoryManager(mgr);
|
|
}
|
|
}
|
|
|
|
public static void printMemoryNotificationInfo
|
|
(MemoryNotificationInfo minfo, String type) {
|
|
System.out.print("Notification for " + minfo.getPoolName());
|
|
System.out.print(" [type = " + type);
|
|
System.out.println(" count = " + minfo.getCount() + "]");
|
|
System.out.println(INDENT + "usage = " + minfo.getUsage());
|
|
}
|
|
}
|