protected virtual LinkedListNode <IStreamPartition> GetNextPartitionNode(LinkedListNode <IStreamPartition> node)
{
try
{
PartitionEditorLock.EnterReadLock();
if (node == null)
{
return(Partitions.First);
}
else
{
return(node.Next);
}
}
finally
{
PartitionEditorLock.ExitReadLock();
}
}
public async Task FromAsync(Stream source, bool disposeWhenDone = false, CancellationToken cancellationToken = default(CancellationToken))
{
try
{
VerifyDisposure();
IPartitionGenerator partitioner = null;
lock (Partitions)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (HasSource)
{
throw new Exceptions.MultipleSourceException();
}
HasSource = true;
partitioner = this.PartitionGenerator;
}
if (partitioner == null)
{
partitioner = PartitionGeneratorFactory.Create();
}
var asyncGenerator = partitioner.GenerateAsync(source, cancellationToken);
while (await asyncGenerator.MoveNext())
{
var part = asyncGenerator.Current();
if (part != null)
{
try
{
PartitionEditorLock.EnterWriteLock();
this.TotalStreamLength += part.Size;
this.Partitions.AddLast(part);
}
finally
{ PartitionEditorLock.ExitWriteLock(); }
lock (Partitions)
{
var x = TCS_ReceivedNextPartition;
TCS_ReceivedNextPartition = new TaskCompletionSource <long>();
x.SetResult(part.Size);
}
}
}
SourceRead = true;
}
catch (TaskCanceledException tce)
{
lock (Partitions)
{
TCS_ReceivedNextPartition.TrySetCanceled(tce.CancellationToken);
TCS_ReceivedLastPartition.TrySetCanceled(tce.CancellationToken);
}
throw;
}
finally
{
if (disposeWhenDone)
{
source.Dispose();
}
lock (Partitions)
{
if (!TCS_ReceivedNextPartition.Task.IsCanceled)
{
TCS_ReceivedNextPartition.SetResult(StreamLength);
}
if (!TCS_ReceivedLastPartition.Task.IsCanceled)
{
TCS_ReceivedLastPartition.SetResult(StreamLength);
}
}
}
}
public void From(Stream source, bool disposeWhenDone = false)
{
try
{
VerifyDisposure();
IPartitionGenerator partitioner = null;
lock (Partitions)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (HasSource)
{
throw new Exceptions.MultipleSourceException();
}
HasSource = true;
partitioner = this.PartitionGenerator;
}
if (partitioner == null)
{
partitioner = PartitionGeneratorFactory.Create();
}
foreach (var part in partitioner.Generate(source))
{
if (part == null)
{
continue;
}
try
{
PartitionEditorLock.EnterWriteLock();
this.TotalStreamLength += part.Size;
this.Partitions.AddLast(part);
}
finally
{ PartitionEditorLock.ExitWriteLock(); }
lock (Partitions)
{
var x = TCS_ReceivedNextPartition;
TCS_ReceivedNextPartition = new TaskCompletionSource <long>();
x.SetResult(part.Size);
}
}
lock (Partitions)
{
SourceRead = true;
TCS_ReceivedNextPartition.SetResult(StreamLength);
TCS_ReceivedLastPartition.SetResult(StreamLength);
}
}
finally
{
if (disposeWhenDone)
{
source.Dispose();
}
}
}
