Package monq.jfa.util

Class Sizeof

java.lang.Object

monq.jfa.util.Sizeof

public class Sizeof
extends Object

estimator for the size of data structures. The sizes of individual elements used to compute the overall size of a data structure are estimates only derived on 1.4.2 on a 32bit Linux.

The implementation will be changed to java.lang.instrument.Instrumentation as soon as we switch to Java 5.

:lol:

Field Summary

Fields

Modifier and Type	Field	Description
static final int	MEM_ARRAY_OVERHEAD
static final int	MEM_CHAR_INARRAY
static final int	MEM_OBJ_OVERHEAD
static final int	MEM_PTR_SIZE

Method Summary

Modifier and Type	Method	Description
static int	charArrayMemEstimate(int numElems)
static int	objectArrayMemEstimate(int numElems)
static int	roundUp(int l)

Methods inherited from class java.lang.Object

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

Field Details

MEM_ARRAY_OVERHEAD

public static final int MEM_ARRAY_OVERHEAD

See Also:

• Constant Field Values

MEM_PTR_SIZE

public static final int MEM_PTR_SIZE

See Also:

• Constant Field Values

MEM_CHAR_INARRAY

public static final int MEM_CHAR_INARRAY

See Also:

• Constant Field Values

MEM_OBJ_OVERHEAD

public static final int MEM_OBJ_OVERHEAD

See Also:

• Constant Field Values

Method Details

charArrayMemEstimate

public static int charArrayMemEstimate(int numElems)

objectArrayMemEstimate

public static int objectArrayMemEstimate(int numElems)

roundUp

public static int roundUp(int l)