com.hazelcast.internal.util

Class JVMUtil

java.lang.Object

com.hazelcast.internal.util.JVMUtil

public final class JVMUtil
extends Object

Helper class for retrieving JVM specific information.

Field Summary

Fields

Modifier and Type	Field and Description
static int	REFERENCE_COST_IN_BYTES Defines the costs for a reference in Bytes.

Method Summary

Modifier and Type	Method and Description
static boolean	is32bitJVM()
static long	usedMemory(Runtime runtime) Returns used memory as reported by the Runtime and the function (totalMemory - freeMemory) It attempts to correct atomicity issues (ie.

Methods inherited from class java.lang.Object

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

Field Detail

REFERENCE_COST_IN_BYTES

public static final int REFERENCE_COST_IN_BYTES

Defines the costs for a reference in Bytes.

Method Detail

is32bitJVM

public static boolean is32bitJVM()

usedMemory

public static long usedMemory(Runtime runtime)

Returns used memory as reported by the Runtime and the function (totalMemory - freeMemory) It attempts to correct atomicity issues (ie. when totalMemory expands) and reported usedMemory results in negative values

Parameters:

runtime -

Returns:

an approximation to the total amount of memory currently used, measured in bytes.