Add allocator abstractions

src/cdc/sys/Allocator.h

@@ -0,0 +1,62 @@
+#pragma once
+
+#include "Heap.h"
+
+namespace cdc
+{
+	enum MemTag
+	{
+		kMemTagMisc,
+		kMemTagDebug,
+		kMemTagAlloc = 0xff
+	};
+
+	class Allocator
+	{
+	public:
+		struct Overhead
+		{
+			int m_alloc;
+			int m_allocDebug;
+			int m_pool;
+			int m_poolDebug;
+		};
+
+		virtual ~Allocator() = 0;
+		virtual int GetType() = 0;
+
+		virtual unsigned int GetAlignment() = 0;
+		virtual unsigned int MaxAllocSize() = 0;
+		virtual unsigned int GetPoolSize() = 0;
+		virtual void GetOverhead(Overhead* overhead) = 0;
+		virtual bool InAddressSpace(const void* ptr) = 0;
+		virtual bool IsAllocation(const void* ptr) = 0;
+		virtual bool IsAllocated(const void* ptr) = 0;
+		virtual unsigned int PtrSize(const void* ptr) = 0;
+
+		virtual bool CheckMemoryCorruption() = 0;
+		virtual bool CheckMemoryCorruption(const void* ptr) = 0;
+		virtual bool CheckMemoryLeaks() = 0;
+
+		virtual void* Alloc(unsigned int size, MemTag tag) = 0;
+		virtual void Free(void* ptr) = 0;
+		virtual bool IsEmpty() = 0;
+		virtual void* GetContext(void* prevContext) = 0;
+		virtual void* GetPtr(void* context) = 0;
+	};
+
+	class HeapAllocator : public Allocator
+	{
+	public:
+		virtual unsigned int GetMaxHeapSize() = 0;
+		virtual unsigned int GetPageSize() = 0;
+		virtual unsigned int GetTopAddress() = 0;
+		virtual unsigned int GetTotalAllocSize() = 0;
+
+		virtual void* AllocNoAbort(unsigned int size, MemTag tag) = 0;
+		virtual void* AllocAlign(unsigned int align, unsigned int size, MemTag tag) = 0;
+		virtual void* Realloc(void* ptr, unsigned int size) = 0;
+
+		virtual Heap* GetHeapImpl() = 0;
+	};
+}

src/cdc/sys/Heap.h

@@ -0,0 +1,8 @@
+#pragma once
+
+namespace cdc
+{
+	class Heap
+	{
+	};
+}