change CPU allocator to accept the framework allocators

src/ngraph/runtime/cpu/cpu_allocator.cpp

@@ -22,31 +22,17 @@ namespace ngraph
     {
         namespace cpu
         {
-            CPUAllocator::CPUAllocator() {}
+            CPUAllocator::CPUAllocator(runtime::AllocateFunc alloc, runtime::DestroyFunc dealloc)
+                : m_alloc(alloc)
+                , m_dealloc(dealloc)
+            {
+            }
             CPUAllocator::~CPUAllocator() {}
             CPUAllocator& GetCPUAllocator()
             {
-                static CPUAllocator cpu_allocator;
+                static CPUAllocator cpu_allocator(nullptr, nullptr);
                 return cpu_allocator;
             }
         }
     }
 }
-/*ngraph::runtime::SystemAllocator::SystemAllocator()
-{
-}
-
-ngraph::runtime::SystemAllocator::~SystemAllocator()
-{
-}
-
-ngraph::runtime::FrameworkAllocator::~FrameworkAllocator()
-{
-}
-
-ngraph::runtime::FrameworkAllocator::FrameworkAllocator(AllocateFunc& allocator,
-                                                        DestroyFunc& deallocator)
-    : m_allocator(allocator)
-    , m_deallocator(deallocator)
-{
-}*/

src/ngraph/runtime/cpu/cpu_allocator.hpp

@@ -56,12 +56,20 @@ namespace ngraph
 class ngraph::runtime::cpu::CPUAllocator : public ngraph::runtime::Allocator
 {
 public:
-    CPUAllocator();
+    CPUAllocator(runtime::AllocateFunc alloc, runtime::DestroyFunc dealloc);
     ~CPUAllocator();
 
     void* Malloc(void* handle, size_t size, size_t alignment)
     {
-        void* ptr = malloc(size);
+        void* ptr;
+        if (m_alloc)
+        {
+            ptr = m_alloc(handle, size, alignment);
+        }
+        else
+        {
+            ptr = malloc(size);
+        }
         // check for exception
         if (size != 0 && !ptr)
         {
@@ -73,8 +81,19 @@ public:
     void Free(void* handle, void* ptr)
     {
         if (ptr)
+        {
+            if (m_dealloc)
+            {
+                m_dealloc(handle, ptr);
+            }
+            else
             {
                 free(ptr);
             }
         }
+    }
+
+private:
+    runtime::AllocateFunc m_alloc;
+    runtime::DestroyFunc m_dealloc;
 };

src/ngraph/runtime/cpu/cpu_call_frame.cpp

@@ -143,7 +143,8 @@ void runtime::cpu::CPU_CallFrame::setup_runtime_context()
 
     // Create temporary buffer pools
     size_t alignment = runtime::cpu::CPU_ExternalFunction::s_memory_pool_alignment;
-    ngraph::runtime::Allocator* allocator = new ngraph::runtime::cpu::CPUAllocator();
+    ngraph::runtime::Allocator* allocator =
+        new ngraph::runtime::cpu::CPUAllocator(nullptr, nullptr);
     /*if (m_framework_allocator && m_framework_deallocator)
     {
         auto fw_allocator =