org.voovan.tools.buffer

Class TByteBuffer

java.lang.Object

org.voovan.tools.buffer.TByteBuffer

public class TByteBuffer
extends Object

ByteBuffer 工具类

Author:

helyho Java Framework. WebSite: https://github.com/helyho/Voovan Licence: Apache v2 License

Field Summary

Fields

Modifier and Type	Field and Description
static Field	addressField
static Long	addressFieldOffset
static Field	attField
static Long	attFieldOffset
static int	BYTE_BUFFER_ANALYSIS
static LongAdder	BYTE_BUFFER_COUNT
static Field	capacityField
static Long	capacityFieldOffset
static int	DEFAULT_BYTE_BUFFER_SIZE
static Class	DIRECT_BYTE_BUFFER_CLASS
static Constructor	DIRECT_BYTE_BUFFER_CONSTURCTOR
static ByteBuffer	EMPTY_BYTE_BUFFER
static LongAdder	MALLOC_COUNT
static LongAdder	MALLOC_SIZE
static int	THREAD_BUFFER_POOL_SIZE
static ThreadObjectPool<ByteBuffer>	THREAD_BYTE_BUFFER_POOL
static sun.misc.Unsafe	UNSAFE

Constructor Summary

Constructors

Constructor and Description
TByteBuffer()

Method Summary

Modifier and Type	Method and Description
static ByteBuffer	allocateDirect() 根据框架的非堆内存配置, 分配 ByteBuffer
static ByteBuffer	allocateDirect(int capacity) 根据框架的非堆内存配置, 分配 ByteBuffer
protected static ByteBuffer	allocateManualReleaseBuffer(int capacity) 分配可能手工进行释放的 ByteBuffer
static ByteBuffer	append(ByteBuffer srcBuffer, int srcPosition, ByteBuffer appendBuffer, int appendPosition, int length) 在 srcBuffer 后追加 appendBuffer;
static ByteBuffer	copy(ByteBuffer byteBuffer) 复制一个 Bytebuffer 对象
static void	free(int capacity)
static Long	getAddress(ByteBuffer byteBuffer) 获取内存地址
static Object	getAtt(ByteBuffer byteBuffer) 获取附加对象
static Map<String,Long>	getByteBufferAnalysis()
static int	indexOf(ByteBuffer byteBuffer, byte[] mark) 查找特定 byte 标识的位置 byte 标识数组第一个字节的索引位置
static boolean	isReleased(ByteBuffer byteBuffer) 判断是否已经释放
static void	malloc(int capacity)
static boolean	move(ByteBuffer byteBuffer, int offset) 移动 Bytebuffer 中的数据 以Bytebuffer.position()为原点,移动 offset 个位置
static void	realloc(int oldCapacity, int newCapacity)
static boolean	reallocate(ByteBuffer byteBuffer, int newSize) 重新分配 byteBuffer 中的空间大小
static void	release(ByteBuffer byteBuffer) 释放byteBuffer 释放对外的 bytebuffer
static void	setAddress(ByteBuffer byteBuffer, long address) 设置内存地址
static void	setAttr(ByteBuffer byteBuffer, Object attr) 设置附加对象
static void	setCapacity(ByteBuffer byteBuffer, int capacity) 设置内存地址
static byte[]	toArray(ByteBuffer bytebuffer) 将ByteBuffer转换成 byte 数组
static String	toString(ByteBuffer bytebuffer) 将 Bytebuffer 转换成 字符串
static String	toString(ByteBuffer bytebuffer, String charset) 将 Bytebuffer 转换成 字符串

Methods inherited from class java.lang.Object

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

Field Detail

UNSAFE

public static final sun.misc.Unsafe UNSAFE

DEFAULT_BYTE_BUFFER_SIZE

public static final int DEFAULT_BYTE_BUFFER_SIZE

THREAD_BUFFER_POOL_SIZE

public static final int THREAD_BUFFER_POOL_SIZE

MALLOC_SIZE

public static final LongAdder MALLOC_SIZE

MALLOC_COUNT

public static final LongAdder MALLOC_COUNT

BYTE_BUFFER_COUNT

public static final LongAdder BYTE_BUFFER_COUNT

BYTE_BUFFER_ANALYSIS

public static final int BYTE_BUFFER_ANALYSIS

THREAD_BYTE_BUFFER_POOL

public static final ThreadObjectPool<ByteBuffer> THREAD_BYTE_BUFFER_POOL

EMPTY_BYTE_BUFFER

public static final ByteBuffer EMPTY_BYTE_BUFFER

DIRECT_BYTE_BUFFER_CLASS

public static final Class DIRECT_BYTE_BUFFER_CLASS

DIRECT_BYTE_BUFFER_CONSTURCTOR

public static final Constructor DIRECT_BYTE_BUFFER_CONSTURCTOR

addressField

public static final Field addressField

addressFieldOffset

public static final Long addressFieldOffset

capacityField

public static final Field capacityField

capacityFieldOffset

public static final Long capacityFieldOffset

attField

public static final Field attField

attFieldOffset

public static final Long attFieldOffset

Constructor Detail

TByteBuffer

public TByteBuffer()

Method Detail

malloc

public static void malloc(int capacity)

realloc

public static void realloc(int oldCapacity,
                           int newCapacity)

free

public static void free(int capacity)

getByteBufferAnalysis

public static Map<String,Long> getByteBufferAnalysis()

allocateManualReleaseBuffer

protected static ByteBuffer allocateManualReleaseBuffer(int capacity)

分配可能手工进行释放的 ByteBuffer

Parameters:

capacity - 容量

Returns:

ByteBuffer 对象

allocateDirect

public static ByteBuffer allocateDirect()

根据框架的非堆内存配置, 分配 ByteBuffer

Returns:

ByteBuffer 对象

allocateDirect

public static ByteBuffer allocateDirect(int capacity)

根据框架的非堆内存配置, 分配 ByteBuffer

Parameters:

capacity - 容量

Returns:

ByteBuffer 对象

reallocate

public static boolean reallocate(ByteBuffer byteBuffer,
                                 int newSize)

重新分配 byteBuffer 中的空间大小

Parameters:

byteBuffer - byteBuffer对象

newSize - 重新分配的空间大小

Returns:

true:成功, false:失败

move

public static boolean move(ByteBuffer byteBuffer,
                           int offset)

移动 Bytebuffer 中的数据 以Bytebuffer.position()为原点,移动 offset 个位置

Parameters:

byteBuffer - byteBuffer对象

offset - 相对当前 ByteBuffer.position 的偏移量

Returns:

true:成功, false:失败

copy

public static ByteBuffer copy(ByteBuffer byteBuffer)
                       throws ReflectiveOperationException

复制一个 Bytebuffer 对象

Parameters:

byteBuffer - 原 ByteBuffer 对象

Returns:

复制出的对象

Throws:

ReflectiveOperationException - 反射错误

append

public static ByteBuffer append(ByteBuffer srcBuffer,
                                int srcPosition,
                                ByteBuffer appendBuffer,
                                int appendPosition,
                                int length)

在 srcBuffer 后追加 appendBuffer;

Parameters:

srcBuffer - 被追加数据的 srcBuffer

srcPosition - 被追加数据的位置

appendBuffer - 追加的内容

appendPosition - 追加的数据起始位置

length - 追加数据的长度

Returns:

返回被追加数据的 srcBuffer

release

public static void release(ByteBuffer byteBuffer)

释放byteBuffer 释放对外的 bytebuffer

Parameters:

byteBuffer - bytebuffer 对象

isReleased

public static boolean isReleased(ByteBuffer byteBuffer)

判断是否已经释放

Parameters:

byteBuffer - ByteBuffer 对象

Returns:

true: 已释放, false: 未释放

toArray

public static byte[] toArray(ByteBuffer bytebuffer)

将ByteBuffer转换成 byte 数组

Parameters:

bytebuffer - ByteBuffer 对象

Returns:

byte 数组

toString

public static String toString(ByteBuffer bytebuffer,
                              String charset)

将 Bytebuffer 转换成 字符串

Parameters:

bytebuffer - Bytebuffer 对象

charset - 字符集

Returns:

字符串对象

toString

public static String toString(ByteBuffer bytebuffer)

将 Bytebuffer 转换成 字符串

Parameters:

bytebuffer - Bytebuffer 对象

Returns:

字符串对象

indexOf

public static int indexOf(ByteBuffer byteBuffer,
                          byte[] mark)

查找特定 byte 标识的位置 byte 标识数组第一个字节的索引位置

Parameters:

byteBuffer - Bytebuffer 对象

mark - byte 标识数组

Returns:

第一个字节的索引位置

getAddress

public static Long getAddress(ByteBuffer byteBuffer)
                       throws ReflectiveOperationException

获取内存地址

Parameters:

byteBuffer - bytebuffer 对象

Returns:

内存地址

Throws:

ReflectiveOperationException - 反射异常

setAddress

public static void setAddress(ByteBuffer byteBuffer,
                              long address)
                       throws ReflectiveOperationException

设置内存地址

Parameters:

byteBuffer - bytebuffer 对象

address - 内存地址

Throws:

ReflectiveOperationException - 反射异常

getAtt

public static Object getAtt(ByteBuffer byteBuffer)
                     throws ReflectiveOperationException

获取附加对象

Parameters:

byteBuffer - bytebuffer 对象

Returns:

附加对象

Throws:

ReflectiveOperationException - 反射异常

setAttr

public static void setAttr(ByteBuffer byteBuffer,
                           Object attr)
                    throws ReflectiveOperationException

设置附加对象

Parameters:

byteBuffer - bytebuffer 对象

attr - 附加对象

Throws:

ReflectiveOperationException - 反射异常

setCapacity

public static void setCapacity(ByteBuffer byteBuffer,
                               int capacity)
                        throws ReflectiveOperationException

设置内存地址

Parameters:

byteBuffer - bytebuffer 对象

capacity - 容量

Throws:

ReflectiveOperationException - 反射异常