Module openj9.dtfj

Package com.ibm.j9ddr.corereaders.elf

Class ELFMemorySource

java.lang.Object

com.ibm.j9ddr.corereaders.memory.BaseMemoryRange

com.ibm.j9ddr.corereaders.memory.ProtectedMemoryRange

com.ibm.j9ddr.corereaders.elf.ELFMemorySource

All Implemented Interfaces:

IDetailedMemoryRange, IMemoryRange, IMemorySource, Comparable<IMemoryRange>

public class ELFMemorySource
extends ProtectedMemoryRange
implements IMemorySource, IDetailedMemoryRange

Memory source that gets its data from an ELFFile.

Field Summary

Fields declared in class com.ibm.j9ddr.corereaders.memory.ProtectedMemoryRange

executable, readOnly, shared

Fields declared in class com.ibm.j9ddr.corereaders.memory.BaseMemoryRange

baseAddress, size

Fields declared in interface com.ibm.j9ddr.corereaders.memory.IDetailedMemoryRange

EXECUTABLE, READABLE, WRITABLE

Method Summary

Modifier and Type	Method	Description
int	getAddressSpaceId()
int	getBytes(long address, byte[] buffer, int offset, int length)	Reads data from the memory range
String	getName()
Properties	getProperties()
boolean	isExecutable()
boolean	isReadOnly()	Assuming that just because something is executable doesn't stop it being read only.

Methods declared in class com.ibm.j9ddr.corereaders.memory.ProtectedMemoryRange

isExecutable, isShared

Methods declared in class com.ibm.j9ddr.corereaders.memory.BaseMemoryRange

compareTo, contains, getBaseAddress, getSize, getTopAddress, isBacked, isSubRange, overlaps

Methods declared in class java.lang.Object

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

Methods declared in interface java.lang.Comparable

compareTo

Methods declared in interface com.ibm.j9ddr.corereaders.memory.IMemoryRange

contains, getBaseAddress, getSize, getTopAddress, isShared, isSubRange, overlaps

Methods declared in interface com.ibm.j9ddr.corereaders.memory.IMemorySource

isBacked

Method Details

getAddressSpaceId

public int getAddressSpaceId()

Specified by:

getAddressSpaceId in interface IMemoryRange

Returns:

Address space ID that this range belongs to.

getBytes

public int getBytes(long address,
 byte[] buffer,
 int offset,
 int length)
             throws MemoryFault

Description copied from interface: IMemorySource

Reads data from the memory range

Specified by:

getBytes in interface IMemorySource

Parameters:

address - Starting address

buffer - Buffer to read into

offset - Offset in buffer to write to

length - Number of bytes to read

Returns:

Bytes read

Throws:

MemoryFault

getName

public String getName()

Specified by:

getName in interface IMemoryRange

Returns:

Name of this range (e.g. .text or stack), or null if range is unnamed.

getProperties

public Properties getProperties()

Specified by:

getProperties in interface IDetailedMemoryRange

isExecutable

public boolean isExecutable()

Specified by:

isExecutable in interface IMemoryRange

isReadOnly

public boolean isReadOnly()

Assuming that just because something is executable doesn't stop it being read only. (ReadOnly is not actually a very good property to expose since it relies on the lack of other properties.)

Specified by:

isReadOnly in interface IMemoryRange