delete this copy c'tors to prevent lifetime issues

graphics/deko3d/deko_examples/source/SampleFramework/CCmdMemRing.h

@@ -15,6 +15,9 @@ class CCmdMemRing
     dk::Fence m_fences[NumSlices];
 public:
     CCmdMemRing() : m_mem{}, m_curSlice{}, m_fences{} { }
+
+    CCmdMemRing(const CCmdMemRing&) = delete;
+
     ~CCmdMemRing()
     {
         m_mem.destroy();

graphics/deko3d/deko_examples/source/SampleFramework/CDescriptorSet.h

@@ -18,7 +18,10 @@ class CDescriptorSet
 	CMemPool::Handle m_mem;
 public:
 	CDescriptorSet() : m_mem{} { }
-	~CDescriptorSet()
+
+    CDescriptorSet(const CDescriptorSet&) = delete;
+	
+    ~CDescriptorSet()
 	{
 		m_mem.destroy();
 	}

graphics/deko3d/deko_examples/source/SampleFramework/CExternalImage.h

@@ -13,6 +13,9 @@ class CExternalImage
     CMemPool::Handle m_mem;
 public:
     CExternalImage() : m_image{}, m_descriptor{}, m_mem{} { }
+
+    CExternalImage(const CExternalImage&) = delete;
+    
     ~CExternalImage()
     {
         m_mem.destroy();

graphics/deko3d/deko_examples/source/SampleFramework/CMemPool.h

@@ -42,6 +42,8 @@ class CMemPool
         uint32_t m_start;
         uint32_t m_end;
 
+        Slice(const Slice&) = delete;
+        
         constexpr uint32_t getSize() const { return m_end - m_start; }
         constexpr bool canCoalesce(Slice const& rhs) const { return m_pool == rhs.m_pool && m_block == rhs.m_block && m_end == rhs.m_start; }
 
@@ -72,6 +74,8 @@ public:
         constexpr bool operator==(Handle const& rhs) const { return m_slice == rhs.m_slice; }
         constexpr bool operator!=(Handle const& rhs) const { return m_slice != rhs.m_slice; }
 
+        Handle(const Handle&) = delete;
+
         void destroy()
         {
             if (m_slice)
@@ -109,9 +113,12 @@ public:
 
     CMemPool(dk::Device dev, uint32_t flags = DkMemBlockFlags_CpuUncached | DkMemBlockFlags_GpuCached, uint32_t blockSize = DefaultBlockSize) :
         m_dev{dev}, m_flags{flags}, m_blockSize{blockSize}, m_blocks{}, m_memMap{}, m_sliceHeap{}, m_freeList{} { }
+
     ~CMemPool();
 
     Handle allocate(uint32_t size, uint32_t alignment = DK_CMDMEM_ALIGNMENT);
+
+    CMemPool(const CMemPool&) = delete;
 };
 
 constexpr bool operator<(uint32_t lhs, CMemPool::Slice const& rhs)

graphics/deko3d/deko_examples/source/SampleFramework/CShader.h

@@ -12,6 +12,9 @@ class CShader
     CMemPool::Handle m_codemem;
 public:
     CShader() : m_shader{}, m_codemem{} { }
+
+    CShader(const CShader&) = delete;
+    
     ~CShader()
     {
         m_codemem.destroy();