Module openj9.dtfj

Package com.ibm.j9ddr.vm29.pointer.helper

Class J9ObjectHelper

java.lang.Object

com.ibm.j9ddr.vm29.pointer.helper.J9ObjectHelper

Direct Known Subclasses:

J9IndexableObjectHelper

public class J9ObjectHelper
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static boolean	compressObjectReferences
static boolean	mixedReferenceMode

Constructor Summary

Constructors

Constructor	Description
J9ObjectHelper()

Method Summary

Modifier and Type	Method	Description
static com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer	clazz(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer)
static U32	flags(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer)
static boolean	getBooleanField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer, J9ObjectFieldOffset offset)	Returns an boolean field from the object or its super classes.
static byte	getByteField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer, J9ObjectFieldOffset offset)	Returns an byte field from the object or its super classes.
static byte	getByteFromArrayByIndex(Object obj, int index)
static char	getCharField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer, J9ObjectFieldOffset offset)	Returns a char field from the object or its super classes.
static String	getClassName(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer)	Return the name of this J9Object's class
static double	getDoubleField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer, J9ObjectFieldOffset offset)	Returns a double field from the object or its super classes.
static J9ObjectFieldOffset	getFieldOffset(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer, String name, String signature)
static float	getFloatField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer, J9ObjectFieldOffset offset)	Returns a float field from the object or its super classes.
static int	getIntField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer, J9ObjectFieldOffset offset)	Returns an int field from the object or its super classes.
static String	getJavaName(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer)
static long	getLongField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer, J9ObjectFieldOffset offset)	Returns an long field from the object or its super classes.
static com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer	getObjectField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer, J9ObjectFieldOffset offset)	Returns an Object field from the object or its super classes.
static short	getShortField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer, J9ObjectFieldOffset offset)	Returns a short field from the object or its super classes.
static String	getStringField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer, J9ObjectFieldOffset offset)	Returns a String field from the object or its super classes.
static long	headerSize()
static boolean	isIndexable(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer)	Returns TRUE if an object is indexable, FALSE otherwise.
static UDATA	monitor(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer)
static UDATA	rawClazz(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer)
static void	reportClassCacheStats()
static String	stringValue(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer)

Methods declared in class java.lang.Object

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

Field Detail

mixedReferenceMode

public static final boolean mixedReferenceMode

compressObjectReferences

public static final boolean compressObjectReferences

Constructor Detail

J9ObjectHelper

public J9ObjectHelper()

Method Detail

isIndexable

public static boolean isIndexable(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer)
                           throws CorruptDataException

Returns TRUE if an object is indexable, FALSE otherwise.

Parameters:

objectPtr - Pointer to an object

Returns:

TRUE if an object is indexable, FALSE otherwise

Throws:

CorruptDataException

flags

public static U32 flags(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer)
                 throws CorruptDataException

Throws:

CorruptDataException

headerSize

public static long headerSize()

rawClazz

public static UDATA rawClazz(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer)
                      throws CorruptDataException

Throws:

CorruptDataException

clazz

public static com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer)
                                                                 throws CorruptDataException

Throws:

CorruptDataException

monitor

public static UDATA monitor(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer)
                     throws CorruptDataException

Throws:

CorruptDataException

getClassName

public static String getClassName(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer)
                           throws CorruptDataException

Return the name of this J9Object's class

Throws:

CorruptDataException

getJavaName

public static String getJavaName(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer)
                          throws CorruptDataException

Throws:

CorruptDataException

stringValue

public static String stringValue(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer)
                          throws CorruptDataException

Throws:

CorruptDataException

getStringField

public static String getStringField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer,
                                    J9ObjectFieldOffset offset)
                             throws CorruptDataException

Returns a String field from the object or its super classes. The field may be a static field or an instance field.

Parameters:

offset - the offset of the field to return

Returns:

the String value of the field

Throws:

CorruptDataException - if there is a problem reading the underlying data from the core file

getIntField

public static int getIntField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer,
                              J9ObjectFieldOffset offset)
                       throws CorruptDataException

Returns an int field from the object or its super classes. The field may be a static field or an instance field.

Parameters:

offset - the offset of the field to return

Returns:

the int value of the field

Throws:

CorruptDataException - if there is a problem reading the underlying data from the core file

getShortField

public static short getShortField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer,
                                  J9ObjectFieldOffset offset)
                           throws CorruptDataException

Returns a short field from the object or its super classes. The field may be a static field or an instance field.

Parameters:

offset - the offset of the field to return

Returns:

the short value of the field

Throws:

CorruptDataException - if there is a problem reading the underlying data from the core file

getFloatField

public static float getFloatField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer,
                                  J9ObjectFieldOffset offset)
                           throws CorruptDataException

Returns a float field from the object or its super classes. The field may be a static field or an instance field.

Parameters:

offset - the offset of the field to return

Returns:

the float value of the field

Throws:

CorruptDataException - if there is a problem reading the underlying data from the core file

getDoubleField

public static double getDoubleField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer,
                                    J9ObjectFieldOffset offset)
                             throws CorruptDataException

Returns a double field from the object or its super classes. The field may be a static field or an instance field.

Parameters:

offset - the offset of the field to return

Returns:

the float value of the field

Throws:

CorruptDataException - if there is a problem reading the underlying data from the core file

getCharField

public static char getCharField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer,
                                J9ObjectFieldOffset offset)
                         throws CorruptDataException

Returns a char field from the object or its super classes. The field may be a static field or an instance field.

Parameters:

offset - the offset of the field to return

Returns:

the char value of the field

Throws:

CorruptDataException - if there is a problem reading the underlying data from the core file

getByteField

public static byte getByteField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer,
                                J9ObjectFieldOffset offset)
                         throws CorruptDataException

Returns an byte field from the object or its super classes. The field may be a static field or an instance field.

Parameters:

offset - the offset of the field to return

Returns:

the byte value of the field

Throws:

CorruptDataException - if there is a problem reading the underlying data from the core file

getBooleanField

public static boolean getBooleanField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer,
                                      J9ObjectFieldOffset offset)
                               throws CorruptDataException

Returns an boolean field from the object or its super classes. The field may be a static field or an instance field.

Parameters:

offset - the offset of the field to return

Returns:

the boolean value of the field

Throws:

CorruptDataException - if there is a problem reading the underlying data from the core file

getLongField

public static long getLongField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer,
                                J9ObjectFieldOffset offset)
                         throws CorruptDataException

Returns an long field from the object or its super classes. The field may be a static field or an instance field.

Parameters:

offset - the offset of the field to return

Returns:

the long value of the field

Throws:

CorruptDataException - if there is a problem reading the underlying data from the core file

getObjectField

public static com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer getObjectField(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer,
                                                                                  J9ObjectFieldOffset offset)
                                                                           throws CorruptDataException

Returns an Object field from the object or its super classes. The field may be a static field or an instance field.

Parameters:

offset - the offset of the field to return

Returns:

the J9Object value of the field

Throws:

CorruptDataException - if there is a problem reading the underlying data from the core file

getFieldOffset

public static J9ObjectFieldOffset getFieldOffset(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer objPointer,
                                                 String name,
                                                 String signature)
                                          throws CorruptDataException

Throws:

CorruptDataException

getByteFromArrayByIndex

public static byte getByteFromArrayByIndex(Object obj,
                                           int index)

reportClassCacheStats

public static void reportClassCacheStats()