org.github.jamm.string

Class StringMeter

java.lang.Object

org.github.jamm.string.StringMeter

public abstract class StringMeter
extends Object

Utility to measure the value field of a String

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	ENABLED Enable or disable string optimization through the org.github.jamm.string.Optimize String system property.
static long	STRING_SHALLOW_SIZE The String shallow size stored as a constant to have it compiled directly into the measure method.

Constructor Summary

Constructors

Constructor and Description
StringMeter()

Method Summary

Modifier and Type	Method and Description
long	measureDeep(MemoryMeterStrategy strategy, String s) Measure the deep size of the specified String.
protected abstract long	measureStringValue(MemoryMeterStrategy strategy, String s) Measure the size of the value of the specified String.
static StringMeter	newInstance() Creates a new StringMeter instance.

Methods inherited from class java.lang.Object

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

Field Detail

ENABLED

public static final boolean ENABLED

Enable or disable string optimization through the org.github.jamm.string.Optimize String system property. true by default.

STRING_SHALLOW_SIZE

public static final long STRING_SHALLOW_SIZE

The String shallow size stored as a constant to have it compiled directly into the measure method.

Constructor Detail

StringMeter

public StringMeter()

Method Detail

measureDeep

public long measureDeep(MemoryMeterStrategy strategy,
                        String s)

Measure the deep size of the specified String.

Parameters:

strategy - the strategy to perform the measurement

s - the string

Returns:

the size of the deep string

measureStringValue

protected abstract long measureStringValue(MemoryMeterStrategy strategy,
                                           String s)

Measure the size of the value of the specified String.

Parameters:

strategy - the strategy to perform the measurement

s - the string

Returns:

the size of the string value field

newInstance

public static StringMeter newInstance()

Creates a new StringMeter instance.

Returns:

a new StringMeter instance.