org.vmutil.options

Class PagesOption

java.lang.Object

org.vmutil.options.Option

org.vmutil.options.PagesOption

Direct Known Subclasses:

BoundedNursery, CycleFilterThreshold, CycleMetaDataLimit, CycleTriggerThreshold, DefragFreeHeadroom, DefragHeadroom, FixedNursery, MetaDataLimit, StressFactor

public class PagesOption
extends Option

A memory option that stores values as a whole number of pages.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	defaultValue
protected int	value

Fields inherited from class org.vmutil.options.Option

ADDRESS_OPTION, BOOLEAN_OPTION, ENUM_OPTION, FLOAT_OPTION, INT_OPTION, MICROSECONDS_OPTION, PAGES_OPTION, RAW, READABLE, set, STRING_OPTION, XML

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	PagesOption(OptionSet set, String name, String desc, int defaultPages) Create a new pages option.

Method Summary

Modifier and Type	Method and Description
Extent	getBytes() Read the current value of the option in bytes.
Extent	getDefaultBytes() Read the default value of the option in bytes.
int	getDefaultPages() Read the default value of the option in pages.
int	getPages() Read the current value of the option in pages.
void	setBytes(Extent value) Update the value of the option, echoing the change if logChanges is set.
void	setDefaultPages(int value) Modify the default value of the option.
void	setPages(int pages) Update the value of the option, echoing the change if logChanges is set.

Methods inherited from class org.vmutil.options.Option

fail, failIf, getDescription, getKey, getName, getNext, getType, setNext, validate, warn, warnIf

Methods inherited from class java.lang.Object

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

Field Detail

defaultValue

protected int defaultValue

value

protected int value

Constructor Detail

PagesOption

protected PagesOption(OptionSet set,
                      String name,
                      String desc,
                      int defaultPages)

Create a new pages option.

Parameters:

set - The option set this option belongs to.

name - The space separated name for the option.

desc - The purpose of the option

defaultPages - The default value of the option.

Method Detail

getPages

public int getPages()

Read the current value of the option in pages.

Returns:

The option value.

getBytes

public Extent getBytes()

Read the current value of the option in bytes.

Returns:

The option value.

getDefaultBytes

public Extent getDefaultBytes()

Read the default value of the option in bytes.

Returns:

The default value.

getDefaultPages

public int getDefaultPages()

Read the default value of the option in pages.

Returns:

The default value.

setBytes

public void setBytes(Extent value)

Update the value of the option, echoing the change if logChanges is set. A warning is raised if the value is not a whole multiple of pages, and then the validate method is called to allow subclasses to perform any additional validation.

Parameters:

value - The new value for the option.

setPages

public void setPages(int pages)

Update the value of the option, echoing the change if logChanges is set. The validate method is called to allow subclasses to perform any additional validation.

Parameters:

pages - The new value for the option.

setDefaultPages

public void setDefaultPages(int value)

Modify the default value of the option.

Parameters:

value - The new default value for the option.