PageBoxLib
Class MemUsage

java.lang.Object
  PageBoxLib.MemUsage

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

ResourceUsage

public class MemUsage

extends java.lang.Object

implements java.io.Serializable

Interface to objects returning resource memory data.

alexis.grandemange@pagebox.net

Copyright (c) 2002-2004 Alexis Grandemange

This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public License
 as published by the Free Software Foundation; version 2.1 of the
 License.
 This library 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 Lesser General Public License for more details.
 A copy of the GNU Lesser General Public License lesser.txt should be
 included in the distribution.

Version:

0, 0, 13

Author:

Alexis Grandemange

See Also:

Serialized Form

Field Summary

long	free Free memory in the Java Virtual Machine
long	max Maximum amount of memory that the Java virtual machine will attempt to use
java.lang.String	msg Error message or null when valid data.
long	netTime Time in millisecond to send a frame and get the answer
long	total Total amount of memory in the Java virtual machine

Constructor Summary

MemUsage()

Method Summary

(package private) void

init(long netTime) Initialization method.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

free

public long free

Free memory in the Java Virtual Machine

total

public long total

Total amount of memory in the Java virtual machine

max

public long max

Maximum amount of memory that the Java virtual machine will attempt to use

netTime

public long netTime

Time in millisecond to send a frame and get the answer

msg

public java.lang.String msg

Error message or null when valid data. Values of interest:

1. first measure

Constructor Detail

MemUsage

public MemUsage()

Method Detail

init

void init(long netTime)

Initialization method. Can be overriden with an extension to ResourceUsage in a probe. .p>Calls Runtime to get JVM data.

On some JVM maxMemory takes a NoSuchMethodError. Hence the try.