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, 59 insertions, 0 deletions

diff --git a/include/armnnTestUtils/MockMemoryManager.hpp b/include/armnnTestUtils/MockMemoryManager.hpp
new file mode 100644
index 0000000000..38cd56747a
--- /dev/null
+++ b/include/armnnTestUtils/MockMemoryManager.hpp
@@ -0,0 +1,59 @@
+//
+// Copyright © 2022 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#pragma once
+
+#include <armnn/backends/IMemoryManager.hpp>
+
+#include <forward_list>
+#include <vector>
+
+namespace armnn
+{
+
+// An implementation of IMemoryManager to be used with MockTensorHandle
+class MockMemoryManager : public IMemoryManager
+{
+public:
+    MockMemoryManager();
+    virtual ~MockMemoryManager();
+
+    class Pool;
+
+    Pool* Manage(unsigned int numBytes);
+
+    void Allocate(Pool* pool);
+
+    void* GetPointer(Pool* pool);
+
+    void Acquire() override;
+    void Release() override;
+
+    class Pool
+    {
+    public:
+        Pool(unsigned int numBytes);
+        ~Pool();
+
+        void Acquire();
+        void Release();
+
+        void* GetPointer();
+
+        void Reserve(unsigned int numBytes);
+
+    private:
+        unsigned int m_Size;
+        void* m_Pointer;
+    };
+
+private:
+    MockMemoryManager(const MockMemoryManager&) = delete;               // Noncopyable
+    MockMemoryManager& operator=(const MockMemoryManager&) = delete;    // Noncopyable
+
+    std::forward_list<Pool> m_Pools;
+    std::vector<Pool*> m_FreePools;
+};
+
+}    // namespace armnn