Module openj9.dtfj

Package com.ibm.dtfj.image.j9

Class ImageSection

java.lang.Object

com.ibm.dtfj.image.j9.ImageSection

All Implemented Interfaces:

ImageSection

Direct Known Subclasses:

BytecodeImageSection, JitImageSection, ModuleImageSection, RawImageSection, StackImageSection

public abstract class ImageSection
extends Object
implements ImageSection

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ImageSection(ImagePointer start, long size)

Method Summary

Modifier and Type	Method	Description
ImagePointer	getBaseAddress()	Gets the base address (the lowest) of memory in this section.
Properties	getProperties()	Get the OS-specific properties for this section.
long	getSize()	Gets the size of the memory section.
boolean	isExecutable()	Tests executable permission on memory section.
boolean	isReadOnly()	Tests read permission on memory section.
boolean	isShared()	Tests shared permission on memory section.

Methods declared in class java.lang.Object

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

Methods declared in interface com.ibm.dtfj.image.ImageSection

getName

Constructor Details

ImageSection

protected ImageSection(ImagePointer start,
 long size)

Method Details

getBaseAddress

public ImagePointer getBaseAddress()

Description copied from interface: ImageSection

Gets the base address (the lowest) of memory in this section.

Specified by:

getBaseAddress in interface ImageSection

Returns:

Base address pointer.

getSize

public long getSize()

Description copied from interface: ImageSection

Gets the size of the memory section.

Specified by:

getSize in interface ImageSection

Returns:

Size of section in bytes.

isExecutable

public boolean isExecutable()
                     throws DataUnavailable

Description copied from interface: ImageSection

Tests executable permission on memory section.

Specified by:

isExecutable in interface ImageSection

Returns:

true if the memory pages in this section are marked executable. False otherwise.

Throws:

DataUnavailable

isReadOnly

public boolean isReadOnly()
                   throws DataUnavailable

Description copied from interface: ImageSection

Tests read permission on memory section.

Specified by:

isReadOnly in interface ImageSection

Returns:

true if the memory pages in this section are marked read-only. False otherwise.

Throws:

DataUnavailable

isShared

public boolean isShared()
                 throws DataUnavailable

Description copied from interface: ImageSection

Tests shared permission on memory section.

Specified by:

isShared in interface ImageSection

Returns:

true if this section is shared between processes. False otherwise.

Throws:

DataUnavailable

getProperties

public Properties getProperties()

Description copied from interface: ImageSection

Get the OS-specific properties for this section.

Specified by:

getProperties in interface ImageSection

Returns:

a table of OS-specific properties for this section. Values which are commonly available include

• "readable" -- whether the memory section can be read from
• "writable" -- whether the memory section can be written to
• "executable" -- whether data in the memory section can be executed