public override void WriteFixedPart(LocalObjectContainer file, bool startFileLockingThread
, bool shuttingDown, StatefulBuffer writer, int blockSize)
{
SystemData systemData = file.SystemData();
writer.Append(Signature);
writer.WriteByte(Version());
writer.WriteInt((int)TimeToWrite(_timerFileLock.OpenTime(), shuttingDown));
writer.WriteLong(TimeToWrite(_timerFileLock.OpenTime(), shuttingDown));
writer.WriteLong(TimeToWrite(Runtime.CurrentTimeMillis(), shuttingDown));
writer.WriteInt(blockSize);
writer.WriteInt(systemData.ClassCollectionID());
writer.WriteByte(systemData.IdSystemType());
writer.WriteInt(((FileHeaderVariablePart2)_variablePart).Address());
writer.WriteInt(((FileHeaderVariablePart2)_variablePart).Length());
writer.WriteInt(_transactionPointerAddress);
writer.Write();
if (shuttingDown)
{
WriteVariablePart(file, true);
}
else
{
file.SyncFiles();
}
if (startFileLockingThread)
{
file.ThreadPool().Start("db4o lock thread", _timerFileLock);
}
}
public override void ApplySlotChanges(IVisitable slotChangeTree, int slotChangeCount
, Slot reservedSlot)
{
if (slotChangeCount > 0)
{
Slot transactionLogSlot = SlotLongEnoughForLog(slotChangeCount, reservedSlot) ? reservedSlot
: AllocateSlot(true, slotChangeCount);
StatefulBuffer buffer = new StatefulBuffer(_container.SystemTransaction(), transactionLogSlot
);
buffer.WriteInt(transactionLogSlot.Length());
buffer.WriteInt(slotChangeCount);
AppendSlotChanges(buffer, slotChangeTree);
buffer.Write();
IRunnable commitHook = _container.CommitHook();
FlushDatabaseFile();
_container.WriteTransactionPointer(transactionLogSlot.Address());
FlushDatabaseFile();
if (WriteSlots(slotChangeTree))
{
FlushDatabaseFile();
}
_container.WriteTransactionPointer(0);
commitHook.Run();
FlushDatabaseFile();
if (transactionLogSlot != reservedSlot)
{
FreeSlot(transactionLogSlot);
}
}
FreeSlot(reservedSlot);
}
protected virtual void WriteTransactionPointer(Transaction systemTransaction, int
transactionPointer, int address, int offset)
{
StatefulBuffer bytes = new StatefulBuffer(systemTransaction, address, TransactionPointerLength
);
bytes.MoveForward(offset);
bytes.WriteInt(transactionPointer);
bytes.WriteInt(transactionPointer);
// Dangerous write.
// On corruption transaction pointers will not be the same and nothing will happen.
bytes.Write();
}
public override void ApplySlotChanges(IVisitable slotChangeTree, int slotChangeCount
, Slot reservedSlot)
{
if (slotChangeCount > 0)
{
var transactionLogSlot = SlotLongEnoughForLog(slotChangeCount, reservedSlot)
? reservedSlot
: AllocateSlot(true, slotChangeCount);
var buffer = new StatefulBuffer(_container.SystemTransaction(), transactionLogSlot
);
buffer.WriteInt(transactionLogSlot.Length());
buffer.WriteInt(slotChangeCount);
AppendSlotChanges(buffer, slotChangeTree);
buffer.Write();
var commitHook = _container.CommitHook();
FlushDatabaseFile();
_container.WriteTransactionPointer(transactionLogSlot.Address());
FlushDatabaseFile();
if (WriteSlots(slotChangeTree))
{
FlushDatabaseFile();
}
_container.WriteTransactionPointer(0);
commitHook.Run();
FlushDatabaseFile();
if (transactionLogSlot != reservedSlot)
{
FreeSlot(transactionLogSlot);
}
}
FreeSlot(reservedSlot);
}
protected virtual void WriteTransactionPointer(Transaction systemTransaction, int
transactionPointer, int address, int offset)
{
var bytes = new StatefulBuffer(systemTransaction, address, TransactionPointerLength
);
bytes.MoveForward(offset);
bytes.WriteInt(transactionPointer);
bytes.WriteInt(transactionPointer);
// Dangerous write.
// On corruption transaction pointers will not be the same and nothing will happen.
bytes.Write();
}
public override void WriteFixedPart(LocalObjectContainer file, bool startFileLockingThread
, bool shuttingDown, StatefulBuffer writer, int blockSize)
{
var systemData = file.SystemData();
writer.Append(Signature);
writer.WriteByte(Version());
writer.WriteInt((int) TimeToWrite(_timerFileLock.OpenTime(), shuttingDown));
writer.WriteLong(TimeToWrite(_timerFileLock.OpenTime(), shuttingDown));
writer.WriteLong(TimeToWrite(Runtime.CurrentTimeMillis(), shuttingDown));
writer.WriteInt(blockSize);
writer.WriteInt(systemData.ClassCollectionID());
writer.WriteByte(systemData.IdSystemType());
writer.WriteInt(((FileHeaderVariablePart2) _variablePart).Address());
writer.WriteInt(((FileHeaderVariablePart2) _variablePart).Length());
writer.WriteInt(_transactionPointerAddress);
writer.Write();
if (shuttingDown)
{
WriteVariablePart(file, true);
}
else
{
file.SyncFiles();
}
if (startFileLockingThread)
{
file.ThreadPool().Start("db4o lock thread", _timerFileLock);
}
}
