IVGCVSW-2006: Move ACL memory manager source code under aclCommon

Change-Id: Ie1c74a18de5c3dd1cd5285c222bd6327489c1508

1 files changed, 84 insertions, 0 deletions

diff --git a/src/backends/aclCommon/memory/OffsetMemoryPool.cpp b/src/backends/aclCommon/memory/OffsetMemoryPool.cpp
new file mode 100644
index 0000000000..48bea5e845
--- /dev/null
+++ b/src/backends/aclCommon/memory/OffsetMemoryPool.cpp
@@ -0,0 +1,84 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#include "OffsetMemoryPool.hpp"
+
+#include <boost/assert.hpp>
+
+#include <algorithm>
+
+namespace armnn
+{
+
+OffsetMemoryPool::OffsetMemoryPool(arm_compute::IAllocator* allocator, size_t blobSize)
+    : m_Allocator(allocator)
+    , m_Blob()
+    , m_BlobSize(blobSize)
+    , m_MemoryAllocated(false)
+{
+    AllocatePool();
+}
+
+OffsetMemoryPool::~OffsetMemoryPool()
+{
+    ReleasePool();
+}
+
+void OffsetMemoryPool::acquire(arm_compute::MemoryMappings& handles)
+{
+    BOOST_ASSERT(m_Blob);
+
+    // Set memory to handlers
+    for(auto& handle : handles)
+    {
+        BOOST_ASSERT(handle.first);
+        *handle.first = reinterpret_cast<uint8_t*>(m_Blob) + handle.second;
+    }
+}
+
+void OffsetMemoryPool::release(arm_compute::MemoryMappings &handles)
+{
+    for(auto& handle : handles)
+    {
+        BOOST_ASSERT(handle.first);
+        *handle.first = nullptr;
+    }
+}
+
+arm_compute::MappingType OffsetMemoryPool::mapping_type() const
+{
+    return arm_compute::MappingType::OFFSETS;
+}
+
+std::unique_ptr<arm_compute::IMemoryPool> OffsetMemoryPool::duplicate()
+{
+    BOOST_ASSERT(m_Allocator);
+    return std::make_unique<OffsetMemoryPool>(m_Allocator, m_BlobSize);
+}
+
+void OffsetMemoryPool::AllocatePool()
+{
+    if (!m_MemoryAllocated)
+    {
+        BOOST_ASSERT(m_Allocator);
+        m_Blob = m_Allocator->allocate(m_BlobSize, 0);
+
+        m_MemoryAllocated = true;
+    }
+}
+
+void OffsetMemoryPool::ReleasePool()
+{
+    if (m_MemoryAllocated)
+    {
+        BOOST_ASSERT(m_Allocator);
+
+        m_Allocator->free(m_Blob);
+        m_Blob = nullptr;
+
+        m_MemoryAllocated = false;
+    }
+}
+
+} // namespace armnn
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