Module openj9.dtfj

Package com.ibm.j9ddr.tools.ddrinteractive

Class CommandUtils

java.lang.Object

com.ibm.j9ddr.tools.ddrinteractive.CommandUtils

public class CommandUtils
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final String	HEX_SUFFIX
static final int	RADIX_BINARY
static final int	RADIX_DECIMAL
static final int	RADIX_HEXADECIMAL
static final BigInteger	UDATA_MAX_32BIT
static final BigInteger	UDATA_MAX_64BIT

Constructor Summary

Constructors

Constructor	Description
CommandUtils()

Method Summary

Modifier and Type	Method	Description
static void	dbgError(PrintStream out, String msg)
static void	dbgPrint(PrintStream out, String msg)
static void	dbgPrint(PrintStream out, String msg, Object... args)
static boolean	fieldExists(Class class1, String string)
static long	followPointerFromStructure(Context context, String structureName, long structureAddress, String fieldName)
static String	getCStringAtAddress(IProcess process, long address)
static String	getCStringAtAddress(IProcess process, long address, long maxLength)
static Logger	getLogger()
static long	getOffsetForField(StructureReader.StructureDescriptor desc, String fieldName)
static BigInteger	longToBigInteger(long pointer)	This method converts long type pointer into BigInteger instance.
static byte[]	longToByteArray(long index, int size)
static BigInteger	parseNumber(String number)	This method parses given number into a BigInteger
static long	parsePointer(String input, boolean is64bit)	This method parses the given address string and return the address value in type long.

Methods declared in class java.lang.Object

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

Field Details

UDATA_MAX_64BIT

public static final BigInteger UDATA_MAX_64BIT

UDATA_MAX_32BIT

public static final BigInteger UDATA_MAX_32BIT

RADIX_BINARY

public static final int RADIX_BINARY

See Also:

• Constant Field Values

RADIX_DECIMAL

public static final int RADIX_DECIMAL

See Also:

• Constant Field Values

RADIX_HEXADECIMAL

public static final int RADIX_HEXADECIMAL

See Also:

• Constant Field Values

HEX_SUFFIX

public static final String HEX_SUFFIX

See Also:

• Constant Field Values

Constructor Details

CommandUtils

public CommandUtils()

Method Details

parsePointer

public static long parsePointer(String input,
 boolean is64bit)
                         throws DDRInteractiveCommandException

This method parses the given address string and return the address value in type long.

Parameters:

input - String representation of the address of a pointer.

is64bit - True, if the platform where core file is generated is 64 bit platform. False, otherwise.

Returns:

Address of the parsed pointer. Return 0, if any parse error occurs.

Throws:

DDRInteractiveCommandException

longToBigInteger

public static BigInteger longToBigInteger(long pointer)

This method converts long type pointer into BigInteger instance. Since long type pointer can be negative too, such values converted into positive BigInteger by treating the bits of long as UDATA.

Parameters:

pointer - long data type pointer.

Returns:

BigInteger instance of the given pointer

parseNumber

public static BigInteger parseNumber(String number)
                              throws DDRInteractiveCommandException

This method parses given number into a BigInteger

Parameters:

number - String representation of the given number to be parsed

Returns:

BigInteger instance of the parsed number

Throws:

DDRInteractiveCommandException

getLogger

public static Logger getLogger()

followPointerFromStructure

public static long followPointerFromStructure(Context context,
 String structureName,
 long structureAddress,
 String fieldName)
                                       throws MemoryFault,
DDRInteractiveCommandException

Throws:

MemoryFault

DDRInteractiveCommandException

getOffsetForField

public static long getOffsetForField(StructureReader.StructureDescriptor desc,
 String fieldName)
                              throws NoSuchFieldException

Throws:

NoSuchFieldException

getCStringAtAddress

public static String getCStringAtAddress(IProcess process,
 long address)
                                  throws CorruptDataException

Throws:

CorruptDataException

fieldExists

public static boolean fieldExists(Class class1,
 String string)

getCStringAtAddress

public static String getCStringAtAddress(IProcess process,
 long address,
 long maxLength)
                                  throws CorruptDataException

Throws:

CorruptDataException

dbgError

public static void dbgError(PrintStream out,
 String msg)

dbgPrint

public static void dbgPrint(PrintStream out,
 String msg)

dbgPrint

public static void dbgPrint(PrintStream out,
 String msg,
 Object... args)

longToByteArray

public static byte[] longToByteArray(long index,
 int size)