Module openj9.dtfj

Package com.ibm.j9ddr.corereaders

Class AbstractCoreReader

java.lang.Object

com.ibm.j9ddr.corereaders.AbstractCoreReader

All Implemented Interfaces:

ICore

Direct Known Subclasses:

AIXDumpReader, MachoDumpReader, MiniDumpReader

public abstract class AbstractCoreReader
extends Object
implements ICore

Field Summary

Fields

Modifier and Type	Field	Description
protected ImageInputStream	_fileReader
protected Collection<? extends IMemorySource>	_memoryRanges
protected File	coreFile

Fields declared in interface com.ibm.j9ddr.corereaders.ICore

CORE_CREATE_TIME_PROPERTY, PROCESSOR_COUNT_PROPERTY, PROCESSOR_SUBTYPE_PROPERTY, PROCESSOR_TYPE_PROPERTY, SYSTEM_SUBTYPE_PROPERTY, SYSTEM_TYPE_PROPERTY

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractCoreReader()

Method Summary

Modifier and Type	Method	Description
protected boolean	checkOffset(long location)
void	close()	Close the handle to the core file and release any resources
static String	format(int i)
static String	format(long l)
byte	readByte()
byte[]	readBytes(int len)
void	readFully(byte[] b)
void	readFully(byte[] buffer, int offset, int length)
int	readInt()
protected static int	readInt(byte[] data, int start)
long	readLong()
protected static long	readLong(byte[] data, int start)
short	readShort()
protected String	readString()
void	seek(long pos)
void	setReader(ImageInputStream reader)	This sets the reader to use to retrieve the underlying bytes to process.

Methods declared in class java.lang.Object

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

Methods declared in interface com.ibm.j9ddr.corereaders.ICore

getAddressSpaces, getDumpFormat, getPlatform, getProperties, isTruncated

Field Details

_fileReader

protected ImageInputStream _fileReader

_memoryRanges

protected Collection<? extends IMemorySource> _memoryRanges

coreFile

protected File coreFile

Constructor Details

AbstractCoreReader

protected AbstractCoreReader()

Method Details

setReader

public void setReader(ImageInputStream reader)
               throws IOException

This sets the reader to use to retrieve the underlying bytes to process. The reader may perform buffering or other operations before making the data available. Subclasses should override this method if additional actions need to be performed when the reader is set, typically this will be things such as an initial read of the data.

Parameters:

reader -

Throws:

IOException

readLong

public long readLong()
              throws IOException

Throws:

IOException

readInt

public int readInt()
            throws IOException

Throws:

IOException

readShort

public short readShort()
                throws IOException

Throws:

IOException

readByte

public byte readByte()
              throws IOException

Throws:

IOException

seek

public void seek(long pos)
          throws IOException

Throws:

IOException

readBytes

public byte[] readBytes(int len)
                 throws IOException

Throws:

IOException

readFully

public void readFully(byte[] b)
               throws IOException

Throws:

IOException

readFully

public void readFully(byte[] buffer,
 int offset,
 int length)
               throws IOException

Throws:

IOException

checkOffset

protected boolean checkOffset(long location)
                       throws IOException

Throws:

IOException

readString

protected String readString()
                     throws IOException

Throws:

IOException

format

public static String format(int i)

format

public static String format(long l)

readLong

protected static long readLong(byte[] data,
 int start)

readInt

protected static int readInt(byte[] data,
 int start)

close

public void close()
           throws IOException

Description copied from interface: ICore

Close the handle to the core file and release any resources

Specified by:

close in interface ICore

Throws:

IOException