COMPMID-605: Transition buffer memory manager

Change-Id: Ide7c6124eb19f13f15f517e62d705646a0cd1ecd
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/130184
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
diff --git a/src/graph/backends/NEON/NEDeviceBackend.cpp b/src/graph/backends/NEON/NEDeviceBackend.cpp
index def6c39..7c2db40 100644
--- a/src/graph/backends/NEON/NEDeviceBackend.cpp
+++ b/src/graph/backends/NEON/NEDeviceBackend.cpp
@@ -37,6 +37,7 @@
 #include "arm_compute/core/TensorInfo.h"
 #include "arm_compute/runtime/Allocator.h"
 #include "arm_compute/runtime/BlobLifetimeManager.h"
+#include "arm_compute/runtime/MemoryGroup.h"
 #include "arm_compute/runtime/MemoryManagerOnDemand.h"
 #include "arm_compute/runtime/OffsetLifetimeManager.h"
 #include "arm_compute/runtime/PoolManager.h"
@@ -74,8 +75,10 @@
     if(ctx.memory_management_ctx(Target::NEON) == nullptr)
     {
         MemoryManagerContext mm_ctx;
-        mm_ctx.target = Target::NEON;
-        mm_ctx.mm     = create_memory_manager(MemoryManagerAffinity::Buffer);
+        mm_ctx.target      = Target::NEON;
+        mm_ctx.intra_mm    = create_memory_manager(MemoryManagerAffinity::Offset);
+        mm_ctx.cross_mm    = create_memory_manager(MemoryManagerAffinity::Offset);
+        mm_ctx.cross_group = std::make_shared<MemoryGroup>(mm_ctx.cross_mm);
 
         ctx.insert_memory_management_ctx(std::move(mm_ctx));
     }
@@ -86,6 +89,11 @@
     return true;
 }
 
+IAllocator *NEDeviceBackend::backend_allocator()
+{
+    return &_allocator;
+}
+
 std::unique_ptr<ITensorHandle> NEDeviceBackend::create_tensor(const Tensor &tensor)
 {
     // Get tensor descriptor
diff --git a/src/graph/backends/NEON/NESubTensorHandle.cpp b/src/graph/backends/NEON/NESubTensorHandle.cpp
index c48ba6b..c0acedd 100644
--- a/src/graph/backends/NEON/NESubTensorHandle.cpp
+++ b/src/graph/backends/NEON/NESubTensorHandle.cpp
@@ -30,10 +30,11 @@
 namespace backends
 {
 NESubTensorHandle::NESubTensorHandle(ITensorHandle *parent_handle, const TensorShape &shape, const Coordinates &coords, bool extend_parent)
-    : _sub_tensor()
+    : _sub_tensor(), _parent_handle(nullptr)
 {
     ARM_COMPUTE_ERROR_ON(!parent_handle);
-    _sub_tensor = arm_compute::SubTensor(&parent_handle->tensor(), shape, coords, extend_parent);
+    _sub_tensor    = arm_compute::SubTensor(&parent_handle->tensor(), shape, coords, extend_parent);
+    _parent_handle = parent_handle;
 }
 
 void NESubTensorHandle::allocate()
@@ -41,14 +42,15 @@
     // noop
 }
 
-const arm_compute::ITensor &NESubTensorHandle::tensor() const
+void NESubTensorHandle::free()
 {
-    return _sub_tensor;
+    // noop
 }
 
-arm_compute::ITensor &NESubTensorHandle::tensor()
+void NESubTensorHandle::manage(IMemoryGroup *mg)
 {
-    return _sub_tensor;
+    ARM_COMPUTE_UNUSED(mg);
+    // noop
 }
 
 void NESubTensorHandle::map(bool blocking)
@@ -66,10 +68,31 @@
     // noop
 }
 
+const arm_compute::ITensor &NESubTensorHandle::tensor() const
+{
+    return _sub_tensor;
+}
+
+arm_compute::ITensor &NESubTensorHandle::tensor()
+{
+    return _sub_tensor;
+}
+
+ITensorHandle *NESubTensorHandle::parent_handle()
+{
+    ARM_COMPUTE_ERROR_ON(_parent_handle == nullptr);
+    return _parent_handle->parent_handle();
+}
+
 bool NESubTensorHandle::is_subtensor() const
 {
     return true;
 }
+
+Target NESubTensorHandle::target() const
+{
+    return Target::NEON;
+}
 } // namespace backends
 } // namespace graph
 } // namespace arm_compute
\ No newline at end of file
diff --git a/src/graph/backends/NEON/NETensorHandle.cpp b/src/graph/backends/NEON/NETensorHandle.cpp
index 8508ac9..5892116 100644
--- a/src/graph/backends/NEON/NETensorHandle.cpp
+++ b/src/graph/backends/NEON/NETensorHandle.cpp
@@ -23,6 +23,9 @@
  */
 #include "arm_compute/graph/backends/NEON/NETensorHandle.h"
 
+#include "arm_compute/core/utils/misc/Cast.h"
+#include "arm_compute/runtime/MemoryGroup.h"
+
 namespace arm_compute
 {
 namespace graph
@@ -40,14 +43,18 @@
     _tensor.allocator()->allocate();
 }
 
-const arm_compute::ITensor &NETensorHandle::tensor() const
+void NETensorHandle::free()
 {
-    return _tensor;
+    _tensor.allocator()->free();
 }
 
-arm_compute::ITensor &NETensorHandle::tensor()
+void NETensorHandle::manage(IMemoryGroup *mg)
 {
-    return _tensor;
+    if(mg != nullptr)
+    {
+        auto *ne_mg = arm_compute::utils::cast::polymorphic_downcast<MemoryGroup *>(mg);
+        ne_mg->manage(&_tensor);
+    }
 }
 
 void NETensorHandle::map(bool blocking)
@@ -68,10 +75,30 @@
     }
 }
 
+const arm_compute::ITensor &NETensorHandle::tensor() const
+{
+    return _tensor;
+}
+
+arm_compute::ITensor &NETensorHandle::tensor()
+{
+    return _tensor;
+}
+
+ITensorHandle *NETensorHandle::parent_handle()
+{
+    return this;
+}
+
 bool NETensorHandle::is_subtensor() const
 {
     return false;
 }
+
+Target NETensorHandle::target() const
+{
+    return Target::NEON;
+}
 } // namespace backends
 } // namespace graph
 } // namespace arm_compute
\ No newline at end of file