unsafe private NativeRuntime.IFabricOperationData CreateNativeOperationData(IOperationData data, uint[] sizes)
{
NativeRuntime.IFabricOperationData operationData = null;
using (var pin = new PinBlittable(sizes))
{
operationData = this.operationDataFactory.CreateOperationData(pin.AddrOfPinnedObject(), (uint)sizes.Length);
}
// get a pointer to the memory that native code allocated in the operation data it created for us
uint countAllocatedByNative;
IntPtr nativeBuffersRaw = operationData.GetData(out countAllocatedByNative);
ReleaseAssert.AssertIfNot(countAllocatedByNative == (uint)sizes.Length, StringResources.Error_BufferNumberMismatach);
NativeTypes.FABRIC_OPERATION_DATA_BUFFER *nativeBuffers = (NativeTypes.FABRIC_OPERATION_DATA_BUFFER *)nativeBuffersRaw;
// copy the data into the buffers allocated by native
int index = 0;
foreach (var item in data)
{
NativeTypes.FABRIC_OPERATION_DATA_BUFFER *nativeBuffer = nativeBuffers + index;
ReleaseAssert.AssertIfNot(nativeBuffer->BufferSize == sizes[index], string.Format(CultureInfo.CurrentCulture, StringResources.Error_BufferAllocationSizeMismatch_Formatted, index, nativeBuffer->BufferSize, sizes[index]));
Marshal.Copy(item.Array, item.Offset, nativeBuffer->Buffer, item.Count);
index++;
}
return(operationData);
}
private static ArraySegment <byte> GetSegment(IntPtr buffer, int index)
{
unsafe
{
NativeTypes.FABRIC_OPERATION_DATA_BUFFER *nativeBuffer = (NativeTypes.FABRIC_OPERATION_DATA_BUFFER *)(buffer + (Marshal.SizeOf(typeof(NativeTypes.FABRIC_OPERATION_DATA_BUFFER)) * index));
return(new ArraySegment <byte>(NativeTypes.FromNativeBytes(nativeBuffer->Buffer, nativeBuffer->BufferSize)));
}
}
private static unsafe IList <ArraySegment <byte> > CreateFromNativeInternal(uint count, IntPtr buffer)
{
List <ArraySegment <byte> > returnValue = new List <ArraySegment <byte> >();
for (int i = 0; i < count; i++)
{
NativeTypes.FABRIC_OPERATION_DATA_BUFFER *nativeBuffer = (NativeTypes.FABRIC_OPERATION_DATA_BUFFER *)(buffer + (Marshal.SizeOf(typeof(NativeTypes.FABRIC_OPERATION_DATA_BUFFER)) * i));
returnValue.Add(new ArraySegment <byte>(NativeTypes.FromNativeBytes(nativeBuffer->Buffer, nativeBuffer->BufferSize)));
}
return(returnValue.AsReadOnly());
}
