void IDeferredSerializable.FinishSerialization(Stream output, DeferredFormatter context)
{
bool useCompression = context.UseCompression;
// formatVersion = 0 for GZIP, or 1 for uncompressed
if (useCompression)
{
output.WriteByte(0);
}
else
{
output.WriteByte(1);
}
// chunkSize
WriteUInt(output, SerializationChunkSize);
uint chunkCount = (uint)((this._length + (long)SerializationChunkSize - 1) / (long)SerializationChunkSize);
ThreadPool threadPool = new ThreadPool(Processor.LogicalCpuCount);
ArrayList exceptions = ArrayList.Synchronized(new ArrayList(Processor.LogicalCpuCount));
var callback = new WaitCallback(SerializeChunk);
object previousLock = null;
for (uint chunk = 0; chunk < chunkCount; ++chunk)
{
long chunkOffset = chunk * (long)SerializationChunkSize;
uint chunkSize = Math.Min(SerializationChunkSize, (uint)(this._length - chunkOffset));
var parms = new SerializeChunkParms(output, chunk, chunkOffset, chunkSize, previousLock, context, exceptions);
threadPool.QueueTask(callback, parms);
previousLock = parms;
}
threadPool.Drain();
output.Flush();
if (exceptions.Count > 0)
{
throw new SerializationException("Exception thrown by worker thread", (Exception)exceptions[0]);
}
return;
}
void IDeferredSerializable.FinishDeserialization(Stream input, DeferredFormatter context)
{
// Allocate the memory
if (this._bitmapWidth != 0 && this._bitmapHeight != 0)
{
this._voidStar = Allocate(this._bitmapWidth, this._bitmapHeight, out this._bitmapHandle).ToPointer();
this._valid = true;
}
else
{
this._voidStar = Allocate(this._length).ToPointer();
this._valid = true;
}
// formatVersion should equal 0
int formatVersion = input.ReadByte();
if (formatVersion == -1)
{
throw new EndOfStreamException();
}
if (formatVersion != 0 && formatVersion != 1)
{
throw new SerializationException("formatVersion was neither zero nor one");
}
// chunkSize
uint chunkSize = ReadUInt(input);
var threadPool = new ThreadPool(Processor.LogicalCpuCount);
var exceptions = new ArrayList(Processor.LogicalCpuCount);
var callback = new WaitCallback(DecompressChunk);
// calculate chunkCount
var chunkCount = (uint)((this._length + (long)chunkSize - 1) / (long)chunkSize);
var chunksFound = new bool[chunkCount];
for (uint i = 0; i < chunkCount; ++i)
{
// chunkNumber
uint chunkNumber = ReadUInt(input);
if (chunkNumber >= chunkCount)
{
throw new SerializationException("chunkNumber read from stream is out of bounds");
}
if (chunksFound[chunkNumber])
{
throw new SerializationException("already encountered chunk #" + chunkNumber.ToString());
}
chunksFound[chunkNumber] = true;
// dataSize
uint dataSize = ReadUInt(input);
// calculate chunkOffset
long chunkOffset = (long)chunkNumber * (long)chunkSize;
// calculate decompressed chunkSize
uint thisChunkSize = Math.Min(chunkSize, (uint)(this._length - chunkOffset));
// bounds checking
if (chunkOffset < 0 || chunkOffset >= this._length || chunkOffset + thisChunkSize > this._length)
{
throw new SerializationException("data was specified to be out of bounds");
}
// read compressed data
var compressedBytes = new byte[dataSize];
Utility.ReadFromStream(input, compressedBytes, 0, compressedBytes.Length);
// decompress data
if (formatVersion == 0)
{
var parms = new DecompressChunkParms(compressedBytes, thisChunkSize, chunkOffset, context, exceptions);
threadPool.QueueTask(callback, parms);
}
else
{
fixed(byte *pbSrc = compressedBytes)
{
Memory.Copy((void *)((byte *)this.VoidStar + chunkOffset), (void *)pbSrc, thisChunkSize);
}
}
}
threadPool.Drain();
if (exceptions.Count > 0)
{
throw new SerializationException("Exception thrown by worker thread", (Exception)exceptions[0]);
}
}
