io.github.whippetdb.memory.db

Class AlignedVarData

java.lang.Object

io.github.whippetdb.memory.basic.DynamicDataIO

io.github.whippetdb.memory.db.AlignedVarData

All Implemented Interfaces:

MemArray, MemBuffer, MemDataArray, MemDataBuffer, MemDataIO, MemIO

public class AlignedVarData
extends DynamicDataIO
implements MemDataBuffer

Same as VarData but with pages aligned at power of 2. Is a bit faster, but may be very wasteful memory-wise, because actual data page size is 2^n+8, which means that the last 8 bytes will take the whole page in an aligned memspace. So it should be used only with non-aligned memspaces, which is quite limiting.

Constructor Summary

Constructors

Constructor and Description
AlignedVarData(MemDataSpace ms, long cacheAddr, int lgPageSize)

Method Summary

Modifier and Type	Method and Description
void	connect(long sizeAddr, long rootAddr)
void	disconnect()
void	setSize(long v)
long	size()
java.lang.String	toString()

Methods inherited from class io.github.whippetdb.memory.basic.DynamicDataIO

read, read, read, readByte, readBytes, readBytes, readInt, readLong, readShort, write, write, write, writeByte, writeBytes, writeBytes, writeInt, writeLong, writeShort

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface io.github.whippetdb.memory.api.MemDataIO

equals, fillLong, readBytes, readBytes, readInt, readLong, readShort, writeBytes, writeBytes, writeInt, writeLong, writeShort

Methods inherited from interface io.github.whippetdb.memory.api.MemArray

readString

Methods inherited from interface io.github.whippetdb.memory.api.MemIO

compareTo, equals, fillByte, read, read, read, readByte, readString, toString, write, write, write, write, write, writeByte

Constructor Detail

AlignedVarData

public AlignedVarData(MemDataSpace ms,
                      long cacheAddr,
                      int lgPageSize)

Method Detail

connect

public void connect(long sizeAddr,
                    long rootAddr)

disconnect

public void disconnect()

size

public long size()

Specified by:

size in interface MemArray

setSize

public void setSize(long v)

Specified by:

setSize in interface MemBuffer

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object