IVGCVSW-6412 Implement CLBackend ICustomAllocator

 * Added implementation of ClBackendDefaultAllocator
 * Added back in some pure virtual functions that were mistakenly removed from the CustomMemoryAllocatorSample
 * Added a new Gralloc MemorySource for memory which originates from the gpu
 * Added unittests

Signed-off-by: David Monahan <David.Monahan@arm.com>
Change-Id: Id2abb33d82697df36426f5709756c616af3e8ed7

1 files changed, 10 insertions, 0 deletions

diff --git a/samples/CustomMemoryAllocatorSample.cpp b/samples/CustomMemoryAllocatorSample.cpp
index a21158b251..171d8e2b5d 100644
--- a/samples/CustomMemoryAllocatorSample.cpp
+++ b/samples/CustomMemoryAllocatorSample.cpp
@@ -35,6 +35,16 @@ public:
         }
         return allocatedMemPtr;
     }
+
+    void free(void* ptr) override
+    {
+        std::free(ptr);
+    }
+
+    armnn::MemorySource GetMemorySourceType() override
+    {
+        return armnn::MemorySource::Malloc;
+    }
 };