com.gigaspaces.internal.utils.concurrent

Class UnsafeHolder

java.lang.Object

com.gigaspaces.internal.utils.concurrent.UnsafeHolder

public class UnsafeHolder
extends Object

Author:

kimchy

Field Summary

Fields

Modifier and Type	Field and Description
static long	BYTE_ARR_OFF

Constructor Summary

Constructors

Constructor and Description
UnsafeHolder()

Method Summary

Modifier and Type	Method and Description
static long	allocateMemory(long size)
static boolean	compareAndSwapInt(Object instance, long offset, int expected, int newValue)
static boolean	compareAndSwapLong(Object instance, long offset, long expected, long newValue)
static boolean	compareAndSwapObject(Object instance, long offset, Object expected, Object newValue)
static void	copyByteArrayFromMemory(byte[] destination, long address, int length)
static void	copyByteArrayToMemory(byte[] data, long address, int length)
static void	freeFromMemory(long address)
static int	getByte(long address)
static int	getIntVolatile(Object instance, long offset)
static Object	getObjectVolatile(Object instance, long offset)
static boolean	isAvailable()
static long	objectFieldOffset(Field field)
static void	putByte(long address, byte b)
static void	putIntVolatile(Object instance, long offset, int newValue)
static void	putObjectVolatile(Object instance, long offset, Object newValue)
static long	reallocateMemory(long oldAddress, long size)

Methods inherited from class java.lang.Object

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

Field Detail

BYTE_ARR_OFF

public static final long BYTE_ARR_OFF

Constructor Detail

UnsafeHolder

public UnsafeHolder()

Method Detail

isAvailable

public static boolean isAvailable()

objectFieldOffset

public static long objectFieldOffset(Field field)

getObjectVolatile

public static Object getObjectVolatile(Object instance,
                                       long offset)

putObjectVolatile

public static void putObjectVolatile(Object instance,
                                     long offset,
                                     Object newValue)

compareAndSwapObject

public static boolean compareAndSwapObject(Object instance,
                                           long offset,
                                           Object expected,
                                           Object newValue)

getIntVolatile

public static int getIntVolatile(Object instance,
                                 long offset)

putIntVolatile

public static void putIntVolatile(Object instance,
                                  long offset,
                                  int newValue)

compareAndSwapInt

public static boolean compareAndSwapInt(Object instance,
                                        long offset,
                                        int expected,
                                        int newValue)

compareAndSwapLong

public static boolean compareAndSwapLong(Object instance,
                                         long offset,
                                         long expected,
                                         long newValue)

allocateMemory

public static long allocateMemory(long size)

reallocateMemory

public static long reallocateMemory(long oldAddress,
                                    long size)

copyByteArrayToMemory

public static void copyByteArrayToMemory(byte[] data,
                                         long address,
                                         int length)

copyByteArrayFromMemory

public static void copyByteArrayFromMemory(byte[] destination,
                                           long address,
                                           int length)

freeFromMemory

public static void freeFromMemory(long address)

putByte

public static void putByte(long address,
                           byte b)

getByte

public static int getByte(long address)