IVGCVSW-6635 Expose a new MockWorkloadFactory and MockMemManager (Part 1)

* Create a MockBackend in armnnTestUtils.
* Create corresponding WorkloadFactory, TensorHandle, TensorHandleFactory
  MemoryManager and WorkloadFactoryHelper classes.

Signed-off-by: Colm Donelan <colm.donelan@arm.com>
Change-Id: I884731b109bc623a7272e5ad333ff754f8c13ae1

1 files changed, 81 insertions, 0 deletions

diff --git a/include/armnnTestUtils/MockTensorHandle.hpp b/include/armnnTestUtils/MockTensorHandle.hpp
new file mode 100644
index 0000000000..9a7518b21a
--- /dev/null
+++ b/include/armnnTestUtils/MockTensorHandle.hpp
@@ -0,0 +1,81 @@
+//
+// Copyright © 2022 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#pragma once
+
+#include "MockMemoryManager.hpp"
+#include <armnn/backends/TensorHandle.hpp>
+
+namespace armnn
+{
+
+// An implementation of ITensorHandle with simple "bump the pointer" memory-management behaviour
+class MockTensorHandle : public ITensorHandle
+{
+public:
+    MockTensorHandle(const TensorInfo& tensorInfo, std::shared_ptr<MockMemoryManager>& memoryManager);
+
+    MockTensorHandle(const TensorInfo& tensorInfo, MemorySourceFlags importFlags);
+
+    ~MockTensorHandle() override;
+
+    void Manage() override;
+
+    void Allocate() override;
+
+    ITensorHandle* GetParent() const override
+    {
+        return nullptr;
+    }
+
+    const void* Map(bool /* blocking = true */) const override;
+    using ITensorHandle::Map;
+
+    void Unmap() const override
+    {}
+
+    TensorShape GetStrides() const override
+    {
+        return GetUnpaddedTensorStrides(m_TensorInfo);
+    }
+
+    TensorShape GetShape() const override
+    {
+        return m_TensorInfo.GetShape();
+    }
+
+    const TensorInfo& GetTensorInfo() const
+    {
+        return m_TensorInfo;
+    }
+
+    MemorySourceFlags GetImportFlags() const override
+    {
+        return m_ImportFlags;
+    }
+
+    bool Import(void* memory, MemorySource source) override;
+    bool CanBeImported(void* memory, MemorySource source) override;
+
+private:
+    // Only used for testing
+    void CopyOutTo(void*) const override;
+    void CopyInFrom(const void*) override;
+
+    void* GetPointer() const;
+
+    MockTensorHandle(const MockTensorHandle& other) = delete;               // noncopyable
+    MockTensorHandle& operator=(const MockTensorHandle& other) = delete;    //noncopyable
+
+    TensorInfo m_TensorInfo;
+
+    std::shared_ptr<MockMemoryManager> m_MemoryManager;
+    MockMemoryManager::Pool* m_Pool;
+    mutable void* m_UnmanagedMemory;
+    MemorySourceFlags m_ImportFlags;
+    bool m_Imported;
+    bool m_IsImportEnabled;
+};
+
+}    // namespace armnn