net.dongliu.commons

类 UnsafeUtils

java.lang.Object

net.dongliu.commons.UnsafeUtils

public class UnsafeUtils
extends Object

作者:

Dong Liu dongliu@live.cn

构造器概要

构造器

构造器和说明
UnsafeUtils()

方法概要

限定符和类型	方法和说明
static int	addressSize()
static long	allocateMemory(long size)
static void	copyMemory(byte[] src, int srcIndex, long dstAddr, long length)
static void	copyMemory(long srcAddr, byte[] dst, int dstIndex, long length)
static void	copyMemory(long srcAddr, long dstAddr, long length)
static long	directBufferAddress(ByteBuffer buffer)
static void	freeMemory(long address)
static byte	getByte(long address)
static ClassLoader	getClassLoader(Class<?> clazz)
static ClassLoader	getContextClassLoader()
static ClassLoader	getSystemClassLoader()
static String	getSystemProperty(String key, String def) Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.
static sun.misc.Unsafe	getUnsafe()

从类继承的方法 java.lang.Object

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

构造器详细资料

UnsafeUtils

public UnsafeUtils()

方法详细资料

getSystemProperty

public static String getSystemProperty(String key,
                                       String def)

Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.

返回:

the property value. def if there's no such property or if an access to the specified property is not allowed.

directBufferAddress

public static long directBufferAddress(ByteBuffer buffer)

getByte

public static byte getByte(long address)

copyMemory

public static void copyMemory(long srcAddr,
                              long dstAddr,
                              long length)

getClassLoader

public static ClassLoader getClassLoader(Class<?> clazz)

getContextClassLoader

public static ClassLoader getContextClassLoader()

getSystemClassLoader

public static ClassLoader getSystemClassLoader()

addressSize

public static int addressSize()

allocateMemory

public static long allocateMemory(long size)

freeMemory

public static void freeMemory(long address)

copyMemory

public static void copyMemory(long srcAddr,
                              byte[] dst,
                              int dstIndex,
                              long length)

copyMemory

public static void copyMemory(byte[] src,
                              int srcIndex,
                              long dstAddr,
                              long length)

getUnsafe

public static sun.misc.Unsafe getUnsafe()