private void InitIndexSink(FileHashDB sender)
{
OnIndexRebuilt -= new OnIndexRebuiltHandler(InitIndexSink);
if (OnReady != null)
{
OnReady(this, null);
}
}
internal DataBlock(FileHashDB READER_sender, int offset, OnReadHandler rCB, object Tag)
{
OnRead += rCB;
_Tag = Tag;
CB = new AsyncCallback(ReadBlockSink);
f = READER_sender;
f.SeekLock.WaitOne();
f.fstream.Seek((long)offset, SeekOrigin.Begin);
f.fstream.BeginRead(buffer, 0, 512, CB, offset);
f.SeekLock.ReleaseMutex();
}
internal DataBlock(FileHashDB READER_sender, int offset, OnReadHandler rCB, object Tag)
{
OnRead += rCB;
_Tag = Tag;
CB = new AsyncCallback(ReadBlockSink);
f = READER_sender;
f.SeekLock.WaitOne();
f.fstream.Seek((long)offset,SeekOrigin.Begin);
f.fstream.BeginRead(buffer,0,512,CB,offset);
f.SeekLock.ReleaseMutex();
}
private void ReadObjectSink(FileHashDB sender, string KEY, byte[] buffer, object Tag)
{
object RetObj = null;
if (buffer.Length > 0)
{
MemoryStream ostream = new MemoryStream(buffer);
RetObj = formatter.Deserialize(ostream);
object[] state = (object[])Tag;
if (state[1] != null)
{
((OnReadObjectHandler)state[1])(this, KEY, RetObj, state[0]);
}
}
}
private void ReadObjectSink(FileHashDB sender, string KEY, byte[] buffer, object Tag)
{
object RetObj = null;
if(buffer.Length>0)
{
MemoryStream ostream = new MemoryStream(buffer);
RetObj = formatter.Deserialize(ostream);
object[] state = (object[])Tag;
if(state[1]!=null)
{
((OnReadObjectHandler)state[1])(this,KEY,RetObj,state[0]);
}
}
}
private void InitIndexSink(FileHashDB sender)
{
OnIndexRebuilt -= new OnIndexRebuiltHandler(InitIndexSink);
if(OnReady!=null) OnReady(this, null);
}
public int WriteRecord(string KEY, byte[] buffer, int offset, int count, object Tag, FileHashDB.OnWriteHandler WriteCB)
{
DataBlock d = GetFreeBlock();
d._Tag = WriteCB;
d.OnWrite += new DataBlock.OnWriteHandler(WriteSink);
long h = 0;
lock(CBMap)
{
h = handle++;
CBMap[h] = new object[2]{KEY,Tag};
}
if(Map!=null)
{
lock(Map)
{
Map[KEY] = d.OFFSET;
}
}
d.Write(KEY,buffer,offset,count,h);
return(d.OFFSET);
}
public int WriteObject(string KEY, object ObjectToWrite, object Tag, FileHashDB.OnWriteHandler CB)
{
MemoryStream ostream = new MemoryStream();
formatter.Serialize(ostream,ObjectToWrite);
byte[] buffer = ostream.ToArray();
return(WriteRecord(KEY,buffer,0,buffer.Length,Tag,CB));
}
public void ReadObject(string KEY, object Tag, FileHashDB.OnReadObjectHandler CB)
{
ReadRecord(KEY,new object[2]{Tag,CB},ObjectReadCB);
}
public void ReadObject(int Position, object Tag, FileHashDB.OnReadObjectHandler CB)
{
ReadRecord(Position,new Object[2]{Tag,CB},ObjectReadCB);
}
internal DataBlock(int BlockOffset, FileHashDB WRITER_sender)
{
CB = new AsyncCallback(WriteBlockSink);
f = WRITER_sender;
OFFSET = BlockOffset;
}
internal DataBlock(int BlockOffset, FileHashDB WRITER_sender)
{
CB = new AsyncCallback(WriteBlockSink);
f = WRITER_sender;
OFFSET = BlockOffset;
}
