/// <summary>
/// Invokes a serializer to store some data.
/// </summary>
/// <returns>Unique id for stored value.</returns>
public PageableStoreId Write(Action <BuildXLWriter> serializer)
{
Contract.RequiresNotNull(serializer);
PageStreamBase writablePageStream;
if (!m_availableWritablePageStreams.TryPop(out writablePageStream))
{
writablePageStream = new MemoryPageStream(this);
Contract.Assert(writablePageStream.CanWrite);
lock (m_pageStreams)
{
m_pageStreams.Add(writablePageStream);
}
}
Contract.AssertNotNull(writablePageStream);
var idValue = (uint)Interlocked.Increment(ref m_lastId);
Contract.Assume(idValue > 0);
bool gotSealed;
int offset = writablePageStream.Write(this, serializer, out gotSealed);
m_itemLocations[idValue] = new ItemLocation(writablePageStream, offset);
if (!gotSealed)
{
m_availableWritablePageStreams.Push(writablePageStream);
}
return(new PageableStoreId(idValue));
}
protected static SerializedState ReadSerializedState(BuildXLReader reader)
{
Contract.RequiresNotNull(reader);
bool debug = reader.ReadBoolean();
int streamCount = reader.ReadInt32();
int[] pageStreamLengths = new int[streamCount];
for (int i = 0; i < streamCount; i++)
{
pageStreamLengths[i] = reader.ReadInt32();
}
List <PageStreamBase> streams = new List <PageStreamBase>(streamCount);
for (int i = 0; i < streamCount; i++)
{
streams.Add(MemoryPageStream.Deserialize(reader, pageStreamLengths[i]));
}
Contract.Assert(streams.Count == streamCount);
int lastId = reader.ReadInt32();
ConcurrentDenseIndex <ItemLocation> offsets = new ConcurrentDenseIndex <ItemLocation>(debug);
for (uint i = 0; i < lastId; i++)
{
PageableStoreId id = new PageableStoreId(i + 1);
var streamIdentifier = reader.ReadInt32();
var offset = reader.ReadInt32();
offsets[id.Value] = new ItemLocation(streams[streamIdentifier], offset);
}
return(new SerializedState()
{
Debug = debug,
PageStreams = streams,
ItemLocations = offsets,
LastId = lastId,
});
}
