public SequenceNumber ReserveAndAppend(
IList <ArraySegment <byte> > data,
SequenceNumber nextUndoRecord,
SequenceNumber previousRecord,
RecordAppendOptions recordAppendOptions,
ReservationCollection reservationCollection,
params long[] reservations)
{
if (reservationCollection == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ArgumentNull("reservationCollection"));
}
if (reservations == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ArgumentNull("reservations"));
}
FileReservationCollection fileResCollection = null;
fileResCollection = reservationCollection as FileReservationCollection;
if (fileResCollection == null || !fileResCollection.IsMyCollection(this))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ArgumentInvalid(SR.LogRecSeq_InvalidReservationCollection));
}
foreach (long reservationSize in reservations)
{
if (reservationSize < 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ArgumentOutOfRange("reservations"));
}
}
foreach (long reservationSize in reservations)
{
fileResCollection.Add(reservationSize);
}
bool throwing = true;
try
{
SequenceNumber returnValue = Append(data, nextUndoRecord, previousRecord, recordAppendOptions);
throwing = false;
return(returnValue);
}
finally
{
if (throwing && fileResCollection != null)
{
foreach (long reservationSize in reservations)
{
fileResCollection.Remove(reservationSize);
}
}
}
}
public SequenceNumber Append(
IList <ArraySegment <byte> > data,
SequenceNumber nextUndoRecord,
SequenceNumber previousRecord,
RecordAppendOptions recordAppendOptions,
ReservationCollection reservations)
{
int size = 0;
if (reservations == null)
{
return(Append(data, nextUndoRecord, previousRecord, recordAppendOptions));
}
if (data == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ArgumentNull("data"));
}
FileReservationCollection reservationCollection = reservations as FileReservationCollection;
if (reservationCollection == null || !reservationCollection.IsMyCollection(this))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ArgumentInvalid(SR.LogRecSeq_InvalidReservationCollection));
}
for (int i = 0; i < data.Count; i++)
{
size += data[i].Count;
}
long reservation = reservationCollection.GetBestMatchingReservation(size);
if (reservation < 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ReservationNotFound());
}
bool throwing = true;
try
{
SequenceNumber returnValue = this.Append(data, nextUndoRecord, previousRecord, recordAppendOptions);
throwing = false;
return(returnValue);
}
finally
{
if (throwing)
{
reservationCollection.Add(reservation);
}
}
}
public SequenceNumber WriteRestartArea(
IList <ArraySegment <byte> > data,
SequenceNumber newBaseSeqNum,
ReservationCollection reservations)
{
long size = 0;
if (data == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ArgumentNull("data"));
}
if (reservations == null)
{
return(WriteRestartArea(data, newBaseSeqNum));
}
FileReservationCollection reservationCollection = reservations as FileReservationCollection;
if (reservationCollection == null || !reservationCollection.IsMyCollection(this))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ArgumentInvalid(SR.LogRecSeq_InvalidReservationCollection));
}
for (int i = 0; i < data.Count; i++)
{
size = checked (size + data[i].Count);
}
long reservation = reservationCollection.GetBestMatchingReservation(size);
if (reservation < 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ReservationNotFound());
}
bool throwing = true;
try
{
SequenceNumber returnValue = WriteRestartArea(data, newBaseSeqNum);
throwing = false;
return(returnValue);
}
finally
{
if (throwing)
{
reservationCollection.Add(reservation);
}
}
}
public ReservationCollection CreateReservationCollection()
{
FileReservationCollection collection = new FileReservationCollection(this);
return(collection);
}
public ReservationCollection CreateReservationCollection()
{
FileReservationCollection collection = new FileReservationCollection(this);
return collection;
}
