/*
* Created on 04-Aug-2004
* Created by Paul Gardner
* Copyright (C) 2004, 2005, 2006 Aelitis, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* AELITIS, SAS au capital de 46,603.30 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package com.aelitis.azureus.core.diskmanager.cache.impl;
/**
* @author parg
*
*/
import org.gudy.azureus2.core3.util.*;
public class
CacheEntry
{
protected static final int CT_DATA_WRITE = 0;
protected static final int CT_READ_AHEAD = 1;
protected CacheFileWithCache file;
protected DirectByteBuffer buffer;
protected long offset;
protected int size;
protected int buffer_pos;
protected int buffer_limit;
protected boolean dirty;
protected long last_used;
protected int entry_type;
protected int usage_count;
protected
CacheEntry(
int _entry_type,
CacheFileWithCache _file,
DirectByteBuffer _buffer,
long _offset,
int _size )
{
entry_type = _entry_type;
file = _file;
buffer = _buffer;
offset = _offset;
size = _size;
buffer_pos = buffer.position(DirectByteBuffer.SS_CACHE);
buffer_limit = buffer.limit(DirectByteBuffer.SS_CACHE);
if ( size != buffer_limit - buffer_pos ){
Debug.out( "CacheEntry: initial size incorrect - size =" + size + ", pos = " + buffer_pos + ", lim = " + buffer_limit );
}
dirty = true;
last_used = SystemTime.getCurrentTime();
}
public CacheFileWithCache
getFile()
{
return( file );
}
public long
getFilePosition()
{
return( offset );
}
public int
getLength()
{
return( size );
}
public DirectByteBuffer
getBuffer()
{
return( buffer );
}
public boolean
isDirty()
{
return( dirty );
}
public void
setClean()
{
dirty = false;
}
protected void
resetBufferPosition()
{
buffer.position( DirectByteBuffer.SS_CACHE, buffer_pos );
}
protected void
used()
{
last_used = SystemTime.getCurrentTime();
usage_count++;
}
protected long
getLastUsed()
{
return( last_used );
}
protected int
getUsageCount()
{
return( usage_count );
}
protected int
getType()
{
return( entry_type );
}
protected String
getString()
{
return( "[" + offset + " - " + (offset+size-1) + ":" + buffer.position(DirectByteBuffer.SS_CACHE)+"/"+buffer.limit(DirectByteBuffer.SS_CACHE)+"]" );
}
}
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