com.alipay.sofa.jraft.util.internal

类 UnsafeUtil

java.lang.Object

com.alipay.sofa.jraft.util.internal.UnsafeUtil

public final class UnsafeUtil
extends Object

For the Unsafe access.

作者:

jiachun.fjc

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	UnsafeUtil.UnsafeAccessor

方法概要

限定符和类型	方法和说明
static long	addressOffset(ByteBuffer buffer) Gets the offset of the address field of the given direct ByteBuffer.
static int	arrayBaseOffset(Class<?> clazz) Reports the offset of the first element in the storage allocation of a given array class.
static int	arrayIndexScale(Class<?> clazz) Reports the scale factor for addressing elements in the storage allocation of a given array class.
static boolean	getBoolean(boolean[] target, long index)
static boolean	getBoolean(Object target, long offset)
static boolean	getBooleanVolatile(boolean[] target, long index)
static byte	getByte(byte[] target, long index)
static byte	getByte(long address)
static byte	getByte(Object target, long offset)
static byte	getByteVolatile(byte[] target, long index)
static double	getDouble(double[] target, long index)
static double	getDouble(Object target, long offset)
static double	getDoubleVolatile(double[] target, long index)
static float	getFloat(float[] target, long index)
static float	getFloat(Object target, long offset)
static float	getFloatVolatile(float[] target, long index)
static int	getInt(int[] target, long index)
static int	getInt(long address)
static int	getInt(Object target, long offset)
static int	getIntVolatile(int[] target, long index)
static long	getLong(long address)
static long	getLong(long[] target, long index)
static long	getLong(Object target, long offset)
static long	getLongVolatile(long[] target, long index)
static Object	getObject(Object[] target, long index)
static Object	getObject(Object target, long offset)
static Object	getObjectVolatile(Object[] target, long index)
static ClassLoader	getSystemClassLoader() Returns the system ClassLoader.
static UnsafeUtil.UnsafeAccessor	getUnsafeAccessor() Get a UnsafeUtil.UnsafeAccessor appropriate for the platform.
static boolean	hasUnsafe() Whether or not can use the unsafe api.
static String	moveToString(char[] chars) Returns a new String backed by the given chars.
static long	objectFieldOffset(Class<?> clazz, String fieldName) Returns the offset of the provided class and fieldName, or -1 if sun.misc.Unsafe is not available.
static long	objectFieldOffset(Field field) Returns the offset of the provided field, or -1 if sun.misc.Unsafe is not available.
static void	putBoolean(boolean[] target, long index, boolean value)
static void	putBoolean(Object target, long offset, boolean value)
static void	putBooleanVolatile(boolean[] target, long index, boolean value)
static void	putByte(byte[] target, long index, byte value)
static void	putByte(long address, byte value)
static void	putByte(Object target, long offset, byte value)
static void	putByteVolatile(byte[] target, long index, byte value)
static void	putDouble(double[] target, long index, double value)
static void	putDouble(Object target, long offset, double value)
static void	putDoubleVolatile(double[] target, long index, double value)
static void	putFloat(float[] target, long index, float value)
static void	putFloat(Object target, long offset, float value)
static void	putFloatVolatile(float[] target, long index, float value)
static void	putInt(int[] target, long index, int value)
static void	putInt(long address, int value)
static void	putInt(Object target, long offset, int value)
static void	putIntVolatile(int[] target, long index, int value)
static void	putLong(long[] target, long index, long value)
static void	putLong(long address, long value)
static void	putLong(Object target, long offset, long value)
static void	putLongVolatile(long[] target, long index, long value)
static void	putObject(Object[] target, long index, Object value)
static void	putObject(Object target, long offset, Object value)
static void	putObjectVolatile(Object[] target, long index, Object value)
static void	throwException(Throwable t)

从类继承的方法 java.lang.Object

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

方法详细资料

hasUnsafe

public static boolean hasUnsafe()

Whether or not can use the unsafe api.

getUnsafeAccessor

public static UnsafeUtil.UnsafeAccessor getUnsafeAccessor()

Get a UnsafeUtil.UnsafeAccessor appropriate for the platform.

getByte

public static byte getByte(Object target,
                           long offset)

putByte

public static void putByte(Object target,
                           long offset,
                           byte value)

getInt

public static int getInt(Object target,
                         long offset)

putInt

public static void putInt(Object target,
                          long offset,
                          int value)

getLong

public static long getLong(Object target,
                           long offset)

putLong

public static void putLong(Object target,
                           long offset,
                           long value)

getBoolean

public static boolean getBoolean(Object target,
                                 long offset)

putBoolean

public static void putBoolean(Object target,
                              long offset,
                              boolean value)

getFloat

public static float getFloat(Object target,
                             long offset)

putFloat

public static void putFloat(Object target,
                            long offset,
                            float value)

getDouble

public static double getDouble(Object target,
                               long offset)

putDouble

public static void putDouble(Object target,
                             long offset,
                             double value)

getObject

public static Object getObject(Object target,
                               long offset)

putObject

public static void putObject(Object target,
                             long offset,
                             Object value)

getByte

public static byte getByte(byte[] target,
                           long index)

putByte

public static void putByte(byte[] target,
                           long index,
                           byte value)

getInt

public static int getInt(int[] target,
                         long index)

putInt

public static void putInt(int[] target,
                          long index,
                          int value)

getLong

public static long getLong(long[] target,
                           long index)

putLong

public static void putLong(long[] target,
                           long index,
                           long value)

getBoolean

public static boolean getBoolean(boolean[] target,
                                 long index)

putBoolean

public static void putBoolean(boolean[] target,
                              long index,
                              boolean value)

getFloat

public static float getFloat(float[] target,
                             long index)

putFloat

public static void putFloat(float[] target,
                            long index,
                            float value)

getDouble

public static double getDouble(double[] target,
                               long index)

putDouble

public static void putDouble(double[] target,
                             long index,
                             double value)

getObject

public static Object getObject(Object[] target,
                               long index)

putObject

public static void putObject(Object[] target,
                             long index,
                             Object value)

getByte

public static byte getByte(long address)

putByte

public static void putByte(long address,
                           byte value)

getInt

public static int getInt(long address)

putInt

public static void putInt(long address,
                          int value)

getLong

public static long getLong(long address)

putLong

public static void putLong(long address,
                           long value)

getByteVolatile

public static byte getByteVolatile(byte[] target,
                                   long index)

putByteVolatile

public static void putByteVolatile(byte[] target,
                                   long index,
                                   byte value)

getIntVolatile

public static int getIntVolatile(int[] target,
                                 long index)

putIntVolatile

public static void putIntVolatile(int[] target,
                                  long index,
                                  int value)

getLongVolatile

public static long getLongVolatile(long[] target,
                                   long index)

putLongVolatile

public static void putLongVolatile(long[] target,
                                   long index,
                                   long value)

getBooleanVolatile

public static boolean getBooleanVolatile(boolean[] target,
                                         long index)

putBooleanVolatile

public static void putBooleanVolatile(boolean[] target,
                                      long index,
                                      boolean value)

getFloatVolatile

public static float getFloatVolatile(float[] target,
                                     long index)

putFloatVolatile

public static void putFloatVolatile(float[] target,
                                    long index,
                                    float value)

getDoubleVolatile

public static double getDoubleVolatile(double[] target,
                                       long index)

putDoubleVolatile

public static void putDoubleVolatile(double[] target,
                                     long index,
                                     double value)

getObjectVolatile

public static Object getObjectVolatile(Object[] target,
                                       long index)

putObjectVolatile

public static void putObjectVolatile(Object[] target,
                                     long index,
                                     Object value)

arrayBaseOffset

public static int arrayBaseOffset(Class<?> clazz)

Reports the offset of the first element in the storage allocation of a given array class.

arrayIndexScale

public static int arrayIndexScale(Class<?> clazz)

Reports the scale factor for addressing elements in the storage allocation of a given array class.

objectFieldOffset

public static long objectFieldOffset(Field field)

Returns the offset of the provided field, or -1 if sun.misc.Unsafe is not available.

objectFieldOffset

public static long objectFieldOffset(Class<?> clazz,
                                     String fieldName)

Returns the offset of the provided class and fieldName, or -1 if sun.misc.Unsafe is not available.

addressOffset

public static long addressOffset(ByteBuffer buffer)

Gets the offset of the address field of the given direct ByteBuffer.

throwException

public static void throwException(Throwable t)

moveToString

public static String moveToString(char[] chars)

Returns a new String backed by the given chars. The char array should not be mutated any more after calling this function.

getSystemClassLoader

public static ClassLoader getSystemClassLoader()

Returns the system ClassLoader.