/// <summary>
/// Constructor
/// </summary>
/// <param name="nativeSession"></param>
internal ReliableMessagingSession(
NativeReliableMessaging.IFabricReliableSession nativeSession)
{
// AppTrace.TraceSource.WriteNoise("ReliableMessaging.NativeReliableSession.FabricCreateReliableSession");
// Initialize native reliable session interface pointer.
// TODO: exception handling
this.nativeReliableSession = nativeSession;
Debug.Assert(null != this.nativeReliableSession);
this.nativeMessageDataFactory = (NativeReliableMessaging.IFabricMessageDataFactory)nativeSession;
}
internal NativeRuntime.IFabricOperationData Pin(NativeReliableMessaging.IFabricMessageDataFactory messageDataFactory)
{
if (null != Interlocked.CompareExchange(ref this.pinCollection, new PinCollection(), null))
{
//
// We do not allow the same ReliableSessionMessage object to be pinned concurrently.
//
throw new InvalidOperationException();
}
var sizes = this.originalMessage.Select(element => (uint)element.Count).ToArray();
var bufferCount = (uint)sizes.Length;
if (bufferCount == 0)
{
return(null);
}
// pin the IOperationData buffers
var pinnedBuffers = this.originalMessage.Select(element => this.pinCollection.AddBlittable(element.Array)).ToArray();
NativeRuntime.IFabricOperationData messageData = null;
using (PinBlittable pinSizes = new PinBlittable(sizes), pinBuffers = new PinBlittable(pinnedBuffers))
{
messageData = messageDataFactory.CreateMessageData(
bufferCount,
pinSizes.AddrOfPinnedObject(),
pinBuffers.AddrOfPinnedObject());
}
this.savedNativeMessageRef = messageData;
return(messageData);
}