IVGCVSW-6620 Update the async api to use ExecutionData

* ExecutionData holds a void* which can be assigned to data required
  for execution in a backend. WorkingMemDescriptors are used in the Ref
  backend which hold TensorHandles for inputs and outputs.
* Updated ExecuteAsync functions to take ExecutionData.
* Added CreateExecutionData and UpdateExectutionData to IBackendInternal.
* Streamlined experimental IWorkingMemHandle API by removing map related
  function and unused m_workingMemDescriptorMap from WorkingMemHandle.

Signed-off-by: Matthew Sloyan <matthew.sloyan@arm.com>
Change-Id: I54b0aab12872011743a141eb42dae200227769af

1 files changed, 21 insertions, 0 deletions

diff --git a/src/armnn/ExecutionData.hpp b/src/armnn/ExecutionData.hpp
new file mode 100644
index 0000000000..69c8f3fa7a
--- /dev/null
+++ b/src/armnn/ExecutionData.hpp
@@ -0,0 +1,21 @@
+//
+// Copyright © 2022 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+namespace armnn
+{
+
+namespace experimental
+{
+
+struct ExecutionData
+{
+    void* m_Data;
+};
+
+} // end experimental namespace
+
+} // end armnn namespace