New cpp folder structure

Signed-off-by: Alexander Borsuk <me@alex.bio>

libs/drape/utils/gpu_mem_tracker.hpp

@@ -0,0 +1,66 @@
+#pragma once
+
+#include "drape/drape_diagnostics.hpp"
+
+#include "base/macros.hpp"
+
+#include <cstdint>
+#include <map>
+#include <mutex>
+#include <string>
+#include <unordered_map>
+#include <utility>
+
+namespace dp
+{
+class GPUMemTracker
+{
+public:
+  struct TagMemorySnapshot
+  {
+    uint32_t m_objectsCount = 0;
+    uint32_t m_alocatedInMb = 0;
+    uint32_t m_usedInMb = 0;
+  };
+
+  struct AverageAllocation
+  {
+    uint64_t m_totalSizeInBytes = 0;
+    uint32_t m_count = 0;
+
+    uint64_t GetAverage() const { return m_count == 0 ? 0 : m_totalSizeInBytes / m_count; }
+  };
+
+  struct GPUMemorySnapshot
+  {
+    std::string ToString() const;
+
+    uint32_t m_summaryAllocatedInMb = 0;
+    uint32_t m_summaryUsedInMb = 0;
+    std::map<std::string, TagMemorySnapshot> m_tagStats;
+    std::unordered_map<uint64_t, AverageAllocation> m_averageAllocations;
+  };
+
+  static GPUMemTracker & Inst();
+
+  GPUMemorySnapshot GetMemorySnapshot();
+
+  void AddAllocated(std::string const & tag, uint32_t id, uint32_t size);
+  void SetUsed(std::string const & tag, uint32_t id, uint32_t size);
+  void RemoveDeallocated(std::string const & tag, uint32_t id);
+
+  void TrackAverageAllocation(uint64_t hash, uint64_t size);
+
+private:
+  GPUMemTracker() = default;
+
+  using TAlocUsedMem = std::pair<uint32_t, uint32_t>;
+  using TMemTag = std::pair<std::string, uint32_t>;
+  std::map<TMemTag, TAlocUsedMem> m_memTracker;
+  std::unordered_map<uint64_t, AverageAllocation> m_averageAllocations;
+
+  std::mutex m_mutex;
+
+  DISALLOW_COPY_AND_MOVE(GPUMemTracker);
+};
+}  // namespace dp