internal void WriteHeader(AbstractBufferedWriter writer)
{
FileCollectionWithFileInfos.WriteHeader(writer, _guid);
writer.WriteUInt8((byte)KVFileType.ModernKeyIndex);
writer.WriteVInt64(_generation);
writer.WriteVUInt32(_trLogFileId);
writer.WriteVUInt32(_trLogOffset);
writer.WriteVUInt64((ulong)_keyValueCount);
writer.WriteVUInt64(_commitUlong);
writer.WriteUInt8((byte)_compressionType);
}
public bool Open(IPositionLessStream positionLessStream, bool dispose)
{
lock (_log)
{
_log.WriteUInt8((byte)KVReplayOperation.Open);
ulong size = positionLessStream.GetSize();
_log.WriteVUInt64(size);
ulong pos = 0;
var buf = new byte[4096];
while (pos < size)
{
var read = positionLessStream.Read(buf, 0, buf.Length, pos);
// Next 2 conditions should not happen or file is mutated when it should not
if (read == 0)
{
break;
}
if ((ulong)read > size - pos)
{
read = (int)(size - pos);
}
_log.WriteBlock(buf, 0, read);
pos += (ulong)read;
}
while (pos < size)
{
_log.WriteUInt8(0);
pos++;
}
_log.FlushBuffer();
}
return(_db.Open(positionLessStream, dispose));
}
internal void WriteHeader(AbstractBufferedWriter writer)
{
writer.WriteByteArrayRaw(DiskChunkCache.MagicStartOfFile);
writer.WriteUInt8((byte)DiskChunkFileType.HashIndex);
writer.WriteVInt64(_generation);
writer.WriteVUInt32((uint)KeySize);
writer.WriteVUInt64((ulong)KeyValueCount);
}
internal void WriteHeader(AbstractBufferedWriter writer)
{
FileCollectionWithFileInfos.WriteHeader(writer, _guid);
writer.WriteUInt8((byte)KVFileType.ModernKeyIndexWithUlongs);
writer.WriteVInt64(_generation);
writer.WriteVUInt32(_trLogFileId);
writer.WriteVUInt32(_trLogOffset);
writer.WriteVUInt64((ulong)_keyValueCount);
writer.WriteVUInt64(_commitUlong);
writer.WriteUInt8((byte)_compressionType);
var ulongCount = (uint)(_ulongs?.Length ?? 0);
writer.WriteVUInt32(ulongCount);
if (ulongCount > 0)
{
for (var i = 0; i < ulongCount; i++)
{
writer.WriteVUInt64(_ulongs ![i]);
// ReSharper disable UnusedMember.Global
public static void SaverImpl <T>(AbstractBufferedWriter writer, IList <T> ilist) where T : class
// ReSharper restore UnusedMember.Global
{
if (ilist == null)
{
writer.WriteVUInt32(0);
return;
}
var oids = ((ListOfDBObject <T>)ilist).Oids;
writer.WriteVUInt32((uint)oids.Count);
foreach (var oid in oids)
{
writer.WriteVUInt64(oid);
}
}
public void Persist(AbstractBufferedWriter writer, Action <AbstractBufferedWriter, ITypeDescriptor> nestedDescriptorPersistor)
{
writer.WriteString(_name);
writer.WriteVUInt32((_signed ? 1u : 0) + (_flags ? 2u : 0) + 4u * (uint)_pairs.Count);
foreach (var pair in _pairs)
{
writer.WriteString(pair.Key);
if (_signed)
{
writer.WriteVInt64((long)pair.Value);
}
else
{
writer.WriteVUInt64(pair.Value);
}
}
}
internal void CommitWrittingTransaction(IBTreeRootNode btreeRoot, bool temporaryCloseTransactionLog)
{
var deltaUlong = unchecked (btreeRoot.CommitUlong - _lastCommited.CommitUlong);
if (deltaUlong != 0)
{
_writerWithTransactionLog.WriteUInt8((byte)KVCommandType.CommitWithDeltaUlong);
_writerWithTransactionLog.WriteVUInt64(deltaUlong);
}
else
{
_writerWithTransactionLog.WriteUInt8((byte)KVCommandType.Commit);
}
if (DurableTransactions || !temporaryCloseTransactionLog)
{
_writerWithTransactionLog.FlushBuffer();
}
UpdateTransactionLogInBTreeRoot(btreeRoot);
if (DurableTransactions)
{
_fileWithTransactionLog.HardFlush();
}
if (temporaryCloseTransactionLog)
{
_writerWithTransactionLog.WriteUInt8((byte)KVCommandType.TemporaryEndOfFile);
_writerWithTransactionLog.FlushBuffer();
if (DurableTransactions)
{
_fileWithTransactionLog.HardFlush();
}
_fileWithTransactionLog.Truncate();
}
lock (_writeLock)
{
_writingTransaction = null;
_lastCommited = btreeRoot;
TryDequeWaiterForWrittingTransaction();
}
}
