Remove AllocationType.

src/TensorFlowNET.Core/Tensors/AllocationType.cs

@@ -1,27 +0,0 @@
-namespace Tensorflow
-{
-    /// <summary>
-    ///     Used internally to 
-    /// </summary>
-    public enum AllocationType
-    {
-        None = 0,
-        /// <summary>
-        ///     Allocation was done by passing in a pointer, might be also holding reference to a C# object.
-        /// </summary>
-        FromPointer = 1,
-        /// <summary>
-        ///     Allocation was done by calling c_api.TF_AllocateTensor or TF decided it has to copy data during c_api.TF_NewTensor. <br></br>
-        ///     Deallocation is handled solely by Tensorflow.
-        /// </summary>
-        Tensorflow = 2,
-        /// <summary>
-        ///     Allocation was done by Marshal.AllocateHGlobal
-        /// </summary>
-        Marshal = 3,
-        /// <summary>
-        ///     Allocation was done by GCHandle.Alloc
-        /// </summary>
-        GCHandle = 4,
-    }
-}

src/TensorFlowNET.Core/Tensors/Tensor.Creation.cs

@@ -19,8 +19,6 @@ using System;
 using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Numerics;
-using System.Runtime.CompilerServices;
-using System.Runtime.InteropServices;
 using System.Text;
 using static Tensorflow.c_api;
 
@@ -29,21 +27,6 @@ namespace Tensorflow
     [SuppressMessage("ReSharper", "InvokeAsExtensionMethod")]
     public partial class Tensor
     {
-        /// <summary>
-        ///     The handle that was used to allocate this tensor, dependent on <see cref="AllocationType"/>.
-        /// </summary>
-        protected object AllocationHandle;
-
-        /// <summary>
-        ///     True if this Tensor holds data allocated by C#.
-        /// </summary>
-        public bool IsMemoryOwner => AllocationType >= AllocationType.Marshal;
-
-        /// <summary>
-        ///     The allocation method used to create this Tensor.
-        /// </summary>
-        public AllocationType AllocationType { get; protected set; }
-
         public IntPtr TensorDataPointer => _handle == IntPtr.Zero ? IntPtr.Zero : TF_TensorData(_handle);
 
         public Tensor()
@@ -125,11 +108,7 @@ namespace Tensorflow
         /// <param name="num_bytes">Size of the tensor in memory</param>
         public Tensor(IntPtr data_ptr, long[] shape, TF_DataType dType, int num_bytes)
         {
-            unsafe
-            {
-                _handle = TF_NewTensor(dType, dims: shape, num_dims: shape.Length, data: data_ptr, len: (ulong)num_bytes);
-                AllocationType = TF_TensorData(_handle) == data_ptr ? AllocationType.FromPointer : AllocationType.Tensorflow;
-            }
+            _handle = TF_NewTensor(dType, dims: shape, num_dims: shape.Length, data: data_ptr, len: (ulong)num_bytes);
         }
 
         public unsafe Tensor(NDArray nd)

src/TensorFlowNET.Core/Tensors/Tensor.cs

@@ -93,7 +93,8 @@ namespace Tensorflow
         /// TFE_TensorHandle
         /// </summary>
         public SafeTensorHandleHandle EagerTensorHandle { get; set; }
-
+        protected bool _createdInGraphMode;
+        public bool CreatedInGraphMode => _createdInGraphMode;
         public bool IsEagerTensor => this is EagerTensor;
         public bool IsSparseTensor => this is SparseTensor;
 
@@ -262,29 +263,6 @@ namespace Tensorflow
 #if TRACK_TENSOR_LIFE
             print($"Delete Tensor 0x{handle.ToString("x16")} {AllocationType} Data: 0x{TensorDataPointer.ToString("x16")}");
 #endif
-            if (AllocationHandle != null)
-            {
-                if (AllocationType == AllocationType.GCHandle)
-                {
-                    ((GCHandle)AllocationHandle).Free();
-                    AllocationHandle = null;
-                    AllocationType = AllocationType.None;
-                }
-                else if (AllocationType == AllocationType.Marshal)
-                {
-                    Marshal.FreeHGlobal((IntPtr)AllocationHandle);
-                    AllocationHandle = null;
-                    AllocationType = AllocationType.None;
-                }
-                else if (AllocationType == AllocationType.FromPointer)
-                {
-                    AllocationHandle = null;
-                    AllocationType = AllocationType.None;
-                }
-                else
-                    throw new InvalidOperationException($"Tensor.AllocationHandle is not null ({AllocationHandle}) but AllocationType is not matched to a C# allocation type ({AllocationType}).");
-            }
-
             if (dtype == TF_DataType.TF_STRING)
             {
                 long size = 1;