org.nustaq.offheap.bytez.malloc

Class MMFBytez

java.lang.Object

org.nustaq.offheap.bytez.malloc.MallocBytez

org.nustaq.offheap.bytez.malloc.MMFBytez

All Implemented Interfaces:

BasicBytez, ByteSink, ByteSource, Bytez

public class MMFBytez
extends MallocBytez

Bytez allocated inside a memory mapped file. Some Mmap file stuff handling is copied from OpenHFT library (too big to depend on for fst), a great tool for all kind of binary/low level java stuff. Check it out at github.

Field Summary

Fields inherited from class org.nustaq.offheap.bytez.malloc.MallocBytez

baseAdress, length

Constructor Summary

Constructors

Constructor and Description
MMFBytez(String filePath, long length, boolean clearFile)

Method Summary

Modifier and Type	Method and Description
void	_setMMFData(File file, FileChannel fileChannel, sun.misc.Cleaner cleaner) hack to update underlying file in slices handed out to app
void	freeAndClose()
sun.misc.Cleaner	getCleaner()
File	getFile()
FileChannel	getFileChannel()
protected void	init(String file, long length, boolean clearFile)

Methods inherited from class org.nustaq.offheap.bytez.malloc.MallocBytez

asByteArray, clear, compareAndSwapInt, compareAndSwapLong, copyTo, equals, get, getArr, getBALength, getBAOffsetIndex, getBaseAdress, getBool, getBooleanArr, getBoolVolatile, getChar, getCharArr, getCharVolatile, getDouble, getDoubleArr, getDoubleVolatile, getFloat, getFloatArr, getFloatVolatile, getInt, getIntArr, getIntVolatile, getLength, getLong, getLongArr, getLongVolatile, getShort, getShortArr, getShortVolatile, getVolatile, hashCode, length, newInstance, put, putBool, putBoolVolatile, putChar, putCharVolatile, putDouble, putDoubleVolatile, putFloat, putFloatVolatile, putInt, putIntVolatile, putLong, putLongVolatile, putShort, putShortVolatile, putVolatile, set, setBase, setBoolean, setChar, setDouble, setFloat, setInt, setLong, setShort, slice, toBytes

Methods inherited from class java.lang.Object

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

Constructor Detail

MMFBytez

public MMFBytez(String filePath,
                long length,
                boolean clearFile)
         throws Exception

Throws:

Exception

Method Detail

init

protected void init(String file,
                    long length,
                    boolean clearFile)
             throws Exception

Throws:

Exception

freeAndClose

public void freeAndClose()

_setMMFData

public void _setMMFData(File file,
                        FileChannel fileChannel,
                        sun.misc.Cleaner cleaner)

hack to update underlying file in slices handed out to app

getFile

public File getFile()

getFileChannel

public FileChannel getFileChannel()

getCleaner

public sun.misc.Cleaner getCleaner()