sun.misc

Class Unsafe

java.lang.Object

sun.misc.Unsafe

public class Unsafe
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	ADDRESS_SIZE
static int	ARRAY_BOOLEAN_BASE_OFFSET
static int	ARRAY_BOOLEAN_INDEX_SCALE
static int	ARRAY_BYTE_BASE_OFFSET
static int	ARRAY_BYTE_INDEX_SCALE
static int	ARRAY_CHAR_BASE_OFFSET
static int	ARRAY_CHAR_INDEX_SCALE
static int	ARRAY_DOUBLE_BASE_OFFSET
static int	ARRAY_DOUBLE_INDEX_SCALE
static int	ARRAY_FLOAT_BASE_OFFSET
static int	ARRAY_FLOAT_INDEX_SCALE
static int	ARRAY_INT_BASE_OFFSET
static int	ARRAY_INT_INDEX_SCALE
static int	ARRAY_LONG_BASE_OFFSET
static int	ARRAY_LONG_INDEX_SCALE
static int	ARRAY_OBJECT_BASE_OFFSET
static int	ARRAY_OBJECT_INDEX_SCALE
static int	ARRAY_SHORT_BASE_OFFSET
static int	ARRAY_SHORT_INDEX_SCALE
static int	INVALID_FIELD_OFFSET

Method Summary

Modifier and Type	Method and Description
int	addressSize()
Object	allocateInstance(Class<?> cls)
long	allocateMemory(long bytes)
int	arrayBaseOffset(Class<?> arrayClass)
int	arrayIndexScale(Class<?> arrayClass)
boolean	compareAndSwapInt(Object o, long offset, int expected, int x)
boolean	compareAndSwapLong(Object o, long offset, long expected, long x)
boolean	compareAndSwapObject(Object o, long offset, Object expected, Object x)
void	copyMemory(long srcAddress, long destAddress, long bytes)
void	copyMemory(Object srcBase, long srcOffset, Object destBase, long destOffset, long bytes)
Class<?>	defineAnonymousClass(Class<?> hostClass, byte[] data, Object[] cpPatches)
Class<?>	defineClass(String name, byte[] b, int off, int len, ClassLoader loader, ProtectionDomain protectionDomain) Deprecated.
void	ensureClassInitialized(Class<?> c)
void	freeMemory(long address)
void	fullFence()
long	getAddress(long address)
int	getAndAddInt(Object o, long offset, int delta)
long	getAndAddLong(Object o, long offset, long delta)
int	getAndSetInt(Object o, long offset, int newValue)
long	getAndSetLong(Object o, long offset, long newValue)
Object	getAndSetObject(Object o, long offset, Object newValue)
boolean	getBoolean(Object o, long offset)
boolean	getBooleanVolatile(Object o, long offset)
byte	getByte(long address)
byte	getByte(Object o, long offset)
byte	getByteVolatile(Object o, long offset)
char	getChar(long address)
char	getChar(Object o, long offset)
char	getCharVolatile(Object o, long offset)
double	getDouble(long address)
double	getDouble(Object o, long offset)
double	getDoubleVolatile(Object o, long offset)
float	getFloat(long address)
float	getFloat(Object o, long offset)
float	getFloatVolatile(Object o, long offset)
int	getInt(long address)
int	getInt(Object o, long offset)
int	getIntVolatile(Object o, long offset)
int	getLoadAverage(double[] loadavg, int nelems)
long	getLong(long address)
long	getLong(Object o, long offset)
long	getLongVolatile(Object o, long offset)
Object	getObject(Object o, long offset)
Object	getObjectVolatile(Object o, long offset)
short	getShort(long address)
short	getShort(Object o, long offset)
short	getShortVolatile(Object o, long offset)
static Unsafe	getUnsafe()
void	invokeCleaner(ByteBuffer directBuffer)
void	loadFence()
long	objectFieldOffset(Field f)
int	pageSize()
void	park(boolean isAbsolute, long time)
void	putAddress(long address, long x)
void	putBoolean(Object o, long offset, boolean x)
void	putBooleanVolatile(Object o, long offset, boolean x)
void	putByte(long address, byte x)
void	putByte(Object o, long offset, byte x)
void	putByteVolatile(Object o, long offset, byte x)
void	putChar(long address, char x)
void	putChar(Object o, long offset, char x)
void	putCharVolatile(Object o, long offset, char x)
void	putDouble(long address, double x)
void	putDouble(Object o, long offset, double x)
void	putDoubleVolatile(Object o, long offset, double x)
void	putFloat(long address, float x)
void	putFloat(Object o, long offset, float x)
void	putFloatVolatile(Object o, long offset, float x)
void	putInt(long address, int x)
void	putInt(Object o, long offset, int x)
void	putIntVolatile(Object o, long offset, int x)
void	putLong(long address, long x)
void	putLong(Object o, long offset, long x)
void	putLongVolatile(Object o, long offset, long x)
void	putObject(Object o, long offset, Object x)
void	putObjectVolatile(Object o, long offset, Object x)
void	putOrderedInt(Object o, long offset, int x)
void	putOrderedLong(Object o, long offset, long x)
void	putOrderedObject(Object o, long offset, Object x)
void	putShort(long address, short x)
void	putShort(Object o, long offset, short x)
void	putShortVolatile(Object o, long offset, short x)
long	reallocateMemory(long address, long bytes)
void	setMemory(long address, long bytes, byte value)
void	setMemory(Object o, long offset, long bytes, byte value)
boolean	shouldBeInitialized(Class<?> c)
Object	staticFieldBase(Field f)
long	staticFieldOffset(Field f)
void	storeFence()
void	throwException(Throwable ee)
void	unpark(Object thread)

Methods inherited from class java.lang.Object

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

Field Detail

INVALID_FIELD_OFFSET

public static final int INVALID_FIELD_OFFSET

ARRAY_BOOLEAN_BASE_OFFSET

public static final int ARRAY_BOOLEAN_BASE_OFFSET

ARRAY_BYTE_BASE_OFFSET

public static final int ARRAY_BYTE_BASE_OFFSET

ARRAY_SHORT_BASE_OFFSET

public static final int ARRAY_SHORT_BASE_OFFSET

ARRAY_CHAR_BASE_OFFSET

public static final int ARRAY_CHAR_BASE_OFFSET

ARRAY_INT_BASE_OFFSET

public static final int ARRAY_INT_BASE_OFFSET

ARRAY_LONG_BASE_OFFSET

public static final int ARRAY_LONG_BASE_OFFSET

ARRAY_FLOAT_BASE_OFFSET

public static final int ARRAY_FLOAT_BASE_OFFSET

ARRAY_DOUBLE_BASE_OFFSET

public static final int ARRAY_DOUBLE_BASE_OFFSET

ARRAY_OBJECT_BASE_OFFSET

public static final int ARRAY_OBJECT_BASE_OFFSET

ARRAY_BOOLEAN_INDEX_SCALE

public static final int ARRAY_BOOLEAN_INDEX_SCALE

ARRAY_BYTE_INDEX_SCALE

public static final int ARRAY_BYTE_INDEX_SCALE

ARRAY_SHORT_INDEX_SCALE

public static final int ARRAY_SHORT_INDEX_SCALE

ARRAY_CHAR_INDEX_SCALE

public static final int ARRAY_CHAR_INDEX_SCALE

ARRAY_INT_INDEX_SCALE

public static final int ARRAY_INT_INDEX_SCALE

ARRAY_LONG_INDEX_SCALE

public static final int ARRAY_LONG_INDEX_SCALE

ARRAY_FLOAT_INDEX_SCALE

public static final int ARRAY_FLOAT_INDEX_SCALE

ARRAY_DOUBLE_INDEX_SCALE

public static final int ARRAY_DOUBLE_INDEX_SCALE

ARRAY_OBJECT_INDEX_SCALE

public static final int ARRAY_OBJECT_INDEX_SCALE

ADDRESS_SIZE

public static final int ADDRESS_SIZE

Method Detail

getUnsafe

public static Unsafe getUnsafe()

getInt

public int getInt(Object o,
                  long offset)

putInt

public void putInt(Object o,
                   long offset,
                   int x)

getObject

public Object getObject(Object o,
                        long offset)

putObject

public void putObject(Object o,
                      long offset,
                      Object x)

getBoolean

public boolean getBoolean(Object o,
                          long offset)

putBoolean

public void putBoolean(Object o,
                       long offset,
                       boolean x)

getByte

public byte getByte(Object o,
                    long offset)

putByte

public void putByte(Object o,
                    long offset,
                    byte x)

getShort

public short getShort(Object o,
                      long offset)

putShort

public void putShort(Object o,
                     long offset,
                     short x)

getChar

public char getChar(Object o,
                    long offset)

putChar

public void putChar(Object o,
                    long offset,
                    char x)

getLong

public long getLong(Object o,
                    long offset)

putLong

public void putLong(Object o,
                    long offset,
                    long x)

getFloat

public float getFloat(Object o,
                      long offset)

putFloat

public void putFloat(Object o,
                     long offset,
                     float x)

getDouble

public double getDouble(Object o,
                        long offset)

putDouble

public void putDouble(Object o,
                      long offset,
                      double x)

getByte

public byte getByte(long address)

putByte

public void putByte(long address,
                    byte x)

getShort

public short getShort(long address)

putShort

public void putShort(long address,
                     short x)

getChar

public char getChar(long address)

putChar

public void putChar(long address,
                    char x)

getInt

public int getInt(long address)

putInt

public void putInt(long address,
                   int x)

getLong

public long getLong(long address)

putLong

public void putLong(long address,
                    long x)

getFloat

public float getFloat(long address)

putFloat

public void putFloat(long address,
                     float x)

getDouble

public double getDouble(long address)

putDouble

public void putDouble(long address,
                      double x)

getAddress

public long getAddress(long address)

putAddress

public void putAddress(long address,
                       long x)

allocateMemory

public long allocateMemory(long bytes)

reallocateMemory

public long reallocateMemory(long address,
                             long bytes)

setMemory

public void setMemory(Object o,
                      long offset,
                      long bytes,
                      byte value)

setMemory

public void setMemory(long address,
                      long bytes,
                      byte value)

copyMemory

public void copyMemory(Object srcBase,
                       long srcOffset,
                       Object destBase,
                       long destOffset,
                       long bytes)

copyMemory

public void copyMemory(long srcAddress,
                       long destAddress,
                       long bytes)

freeMemory

public void freeMemory(long address)

objectFieldOffset

public long objectFieldOffset(Field f)

staticFieldOffset

public long staticFieldOffset(Field f)

staticFieldBase

public Object staticFieldBase(Field f)

shouldBeInitialized

public boolean shouldBeInitialized(Class<?> c)

ensureClassInitialized

public void ensureClassInitialized(Class<?> c)

arrayBaseOffset

public int arrayBaseOffset(Class<?> arrayClass)

arrayIndexScale

public int arrayIndexScale(Class<?> arrayClass)

addressSize

public int addressSize()

pageSize

public int pageSize()

defineClass

@Deprecated
public Class<?> defineClass(String name,
                                        byte[] b,
                                        int off,
                                        int len,
                                        ClassLoader loader,
                                        ProtectionDomain protectionDomain)

Deprecated.

defineAnonymousClass

public Class<?> defineAnonymousClass(Class<?> hostClass,
                                     byte[] data,
                                     Object[] cpPatches)

allocateInstance

public Object allocateInstance(Class<?> cls)
                        throws InstantiationException

Throws:

InstantiationException

throwException

public void throwException(Throwable ee)

compareAndSwapObject

public final boolean compareAndSwapObject(Object o,
                                          long offset,
                                          Object expected,
                                          Object x)

compareAndSwapInt

public final boolean compareAndSwapInt(Object o,
                                       long offset,
                                       int expected,
                                       int x)

compareAndSwapLong

public final boolean compareAndSwapLong(Object o,
                                        long offset,
                                        long expected,
                                        long x)

getObjectVolatile

public Object getObjectVolatile(Object o,
                                long offset)

putObjectVolatile

public void putObjectVolatile(Object o,
                              long offset,
                              Object x)

getIntVolatile

public int getIntVolatile(Object o,
                          long offset)

putIntVolatile

public void putIntVolatile(Object o,
                           long offset,
                           int x)

getBooleanVolatile

public boolean getBooleanVolatile(Object o,
                                  long offset)

putBooleanVolatile

public void putBooleanVolatile(Object o,
                               long offset,
                               boolean x)

getByteVolatile

public byte getByteVolatile(Object o,
                            long offset)

putByteVolatile

public void putByteVolatile(Object o,
                            long offset,
                            byte x)

getShortVolatile

public short getShortVolatile(Object o,
                              long offset)

putShortVolatile

public void putShortVolatile(Object o,
                             long offset,
                             short x)

getCharVolatile

public char getCharVolatile(Object o,
                            long offset)

putCharVolatile

public void putCharVolatile(Object o,
                            long offset,
                            char x)

getLongVolatile

public long getLongVolatile(Object o,
                            long offset)

putLongVolatile

public void putLongVolatile(Object o,
                            long offset,
                            long x)

getFloatVolatile

public float getFloatVolatile(Object o,
                              long offset)

putFloatVolatile

public void putFloatVolatile(Object o,
                             long offset,
                             float x)

getDoubleVolatile

public double getDoubleVolatile(Object o,
                                long offset)

putDoubleVolatile

public void putDoubleVolatile(Object o,
                              long offset,
                              double x)

putOrderedObject

public void putOrderedObject(Object o,
                             long offset,
                             Object x)

putOrderedInt

public void putOrderedInt(Object o,
                          long offset,
                          int x)

putOrderedLong

public void putOrderedLong(Object o,
                           long offset,
                           long x)

unpark

public void unpark(Object thread)

park

public void park(boolean isAbsolute,
                 long time)

getLoadAverage

public int getLoadAverage(double[] loadavg,
                          int nelems)

getAndAddInt

public final int getAndAddInt(Object o,
                              long offset,
                              int delta)

getAndAddLong

public final long getAndAddLong(Object o,
                                long offset,
                                long delta)

getAndSetInt

public final int getAndSetInt(Object o,
                              long offset,
                              int newValue)

getAndSetLong

public final long getAndSetLong(Object o,
                                long offset,
                                long newValue)

getAndSetObject

public final Object getAndSetObject(Object o,
                                    long offset,
                                    Object newValue)

loadFence

public void loadFence()

storeFence

public void storeFence()

fullFence

public void fullFence()

invokeCleaner

public void invokeCleaner(ByteBuffer directBuffer)