io.github.whippetdb.memory.journaling.simple

Class SimpleJournalingMemSpace

java.lang.Object

io.github.whippetdb.memory.basic.DynamicDataIO

io.github.whippetdb.memory.journaling.simple.SimpleJournalingDataIO

io.github.whippetdb.memory.journaling.simple.SimpleJournalingMemSpace

All Implemented Interfaces:

MemDataIO, MemDataSpace, MemIO, MemSpace

public class SimpleJournalingMemSpace
extends SimpleJournalingDataIO
implements MemDataSpace

Constructor Summary

Constructors

Constructor and Description
SimpleJournalingMemSpace(MemDataSpace parent, java.lang.Runnable flush, int lgPageSize, int maxDirtySpace, long maxLogSize) Currently only parents with matching pageSize must be used.

Method Summary

Modifier and Type	Method and Description
long	allocate(int size, boolean clear)
long	allocatedSize()

Methods inherited from class io.github.whippetdb.memory.journaling.simple.SimpleJournalingDataIO

close, commit, discard, flush, 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.MemIO

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

Constructor Detail

SimpleJournalingMemSpace

public SimpleJournalingMemSpace(MemDataSpace parent,
                                java.lang.Runnable flush,
                                int lgPageSize,
                                int maxDirtySpace,
                                long maxLogSize)

Currently only parents with matching pageSize must be used. Otherwise: 1. Normal bound check fails 2. If we'd forse a parent to allow cross-boundary IO for last page, there would arise a possible inconsistency in allocate();

Parameters:

parent -

flush -

log -

lgPageSize -

maxDirtySpace -

maxLogSize -

Method Detail

allocate

public long allocate(int size,
                     boolean clear)

Specified by:

allocate in interface MemSpace

allocatedSize

public long allocatedSize()

Specified by:

allocatedSize in interface MemSpace