Package edu.wisc.ssec.mcidasv.util

Class GetMem

java.lang.Object

edu.wisc.ssec.mcidasv.util.GetMem

public class GetMem
extends Object

Wrapper for OperatingSystemMXBean.

Note: this class is likely to be used in contexts where we don't have logging set up, so System.err and System.out are used.

Constructor Summary

Constructors

Constructor	Description
GetMem()

Method Summary

Modifier and Type	Method	Description
static String	getMemory()	Get total system memory and print it out--accounts for 32bit JRE limitation of 1.5GB.
static void	main(String[] args)	The main.
private static <T> T	queryPlatformBean(String attrName, T defaultValue)	Query an OperatingSystemMXBean attribute and return the result.

Methods inherited from class java.lang.Object

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

Constructor Details

GetMem

public GetMem()

Method Details

queryPlatformBean

private static <T> T queryPlatformBean(String attrName,
 T defaultValue)

Query an OperatingSystemMXBean attribute and return the result.

Type Parameters:

T - Type of the expected return value and defaultValue.

Parameters:

attrName - Name of the OperatingSystemMXBean attribute to query. Cannot be null or empty.

defaultValue - Value returned if attrName could not be queried.

Returns:

Either the value corresponding to attrName or defaultValue.

getMemory

public static String getMemory()

Get total system memory and print it out--accounts for 32bit JRE limitation of 1.5GB.

Returns:

String representation of the total amount of system memory.

main

public static void main(String[] args)

The main. Get total system memory and print it out.

Parameters:

args - Ignored.