From c577f2c6a3b4ddb6ba87a882723c53a248afbeba Mon Sep 17 00:00:00 2001
From: telsoa01 <telmo.soares@arm.com>
Date: Fri, 31 Aug 2018 09:22:23 +0100
Subject: Release 18.08

---
 src/armnn/memory/BlobLifetimeManager.cpp | 79 ++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 src/armnn/memory/BlobLifetimeManager.cpp

(limited to 'src/armnn/memory/BlobLifetimeManager.cpp')

diff --git a/src/armnn/memory/BlobLifetimeManager.cpp b/src/armnn/memory/BlobLifetimeManager.cpp
new file mode 100644
index 0000000000..5b085b2f5e
--- /dev/null
+++ b/src/armnn/memory/BlobLifetimeManager.cpp
@@ -0,0 +1,79 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// See LICENSE file in the project root for full license information.
+//
+#include "BlobLifetimeManager.hpp"
+#include "BlobMemoryPool.hpp"
+
+#include "arm_compute/runtime/IMemoryGroup.h"
+
+#include "boost/assert.hpp"
+
+#include <algorithm>
+
+namespace armnn
+{
+
+BlobLifetimeManager::BlobLifetimeManager()
+    : m_BlobSizes()
+{
+}
+
+arm_compute::MappingType BlobLifetimeManager::mapping_type() const
+{
+    return arm_compute::MappingType::BLOBS;
+}
+
+void BlobLifetimeManager::update_blobs_and_mappings()
+{
+    using namespace arm_compute;
+
+    BOOST_ASSERT(are_all_finalized());
+    BOOST_ASSERT(_active_group);
+
+    // Sort free blobs requirements in descending order.
+    _free_blobs.sort([](const Blob & ba, const Blob & bb)
+                     {
+                         return ba.max_size > bb.max_size;
+                     });
+    std::vector<size_t> groupSizes;
+    std::transform(std::begin(_free_blobs), std::end(_free_blobs), std::back_inserter(groupSizes), [](const Blob & b)
+    {
+        return b.max_size;
+    });
+
+    // Update blob sizes
+    size_t max_size = std::max(m_BlobSizes.size(), groupSizes.size());
+    m_BlobSizes.resize(max_size, 0);
+    groupSizes.resize(max_size, 0);
+    std::transform(std::begin(m_BlobSizes), std::end(m_BlobSizes), std::begin(groupSizes),
+        std::begin(m_BlobSizes), [](size_t lhs, size_t rhs)
+    {
+        return std::max(lhs, rhs);
+    });
+
+    // Calculate group mappings
+    auto& groupMappings  = _active_group->mappings();
+    unsigned int blobIdx = 0;
+
+    for(auto& freeBlob : _free_blobs)
+    {
+        for(auto& boundElementId : freeBlob.bound_elements)
+        {
+            BOOST_ASSERT(_active_elements.find(boundElementId) != std::end(_active_elements));
+
+            Element& boundElement = _active_elements[boundElementId];
+            groupMappings[boundElement.handle] = blobIdx;
+        }
+
+        ++blobIdx;
+    }
+}
+
+std::unique_ptr<arm_compute::IMemoryPool> BlobLifetimeManager::create_pool(arm_compute::IAllocator* allocator)
+{
+    BOOST_ASSERT(allocator);
+    return std::make_unique<BlobMemoryPool>(allocator, m_BlobSizes);
+}
+
+} // namespace armnn
\ No newline at end of file
-- 
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