MemoryManager.hpp

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#ifndef DART_COMMON_MEMORYMANAGER_HPP_
#define DART_COMMON_MEMORYMANAGER_HPP_
 
#ifndef NDEBUG
  #include <mutex>
#endif
#include <iostream>
 
#include "dart/common/FreeListAllocator.hpp"
#include "dart/common/PoolAllocator.hpp"
 
namespace dart::common {
 
class MemoryManager final
{
public:
  enum class Type
  {
    Base,
    Free,
    Pool,
  };
 
  [[nodiscard]] static MemoryManager& GetDefault();
 
  explicit MemoryManager(
      MemoryAllocator& baseAllocator = MemoryAllocator::GetDefault());
 
  ~MemoryManager();
 
  [[nodiscard]] MemoryAllocator& getBaseAllocator();
 
  [[nodiscard]] FreeListAllocator& getFreeListAllocator();
 
  [[nodiscard]] PoolAllocator& getPoolAllocator();
 
  [[nodiscard]] void* allocate(Type type, size_t bytes);
 
  [[nodiscard]] void* allocateUsingFree(size_t bytes);
 
  [[nodiscard]] void* allocateUsingPool(size_t bytes);
 
  void deallocate(Type type, void* pointer, size_t bytes);
  // TODO(JS): Make this constexpr once migrated to C++20
 
  void deallocateUsingFree(void* pointer, size_t bytes);
 
  void deallocateUsingPool(void* pointer, size_t bytes);
 
  template <typename T, typename... Args>
  [[nodiscard]] T* construct(Type type, Args&&... args) noexcept;
 
  template <typename T, typename... Args>
  [[nodiscard]] T* constructUsingFree(Args&&... args) noexcept;
 
  template <typename T, typename... Args>
  [[nodiscard]] T* constructUsingPool(Args&&... args) noexcept;
 
  template <typename T>
  void destroy(Type type, T* object) noexcept;
 
  template <typename T>
  void destroyUsingFree(T* pointer) noexcept;
 
  template <typename T>
  void destroyUsingPool(T* pointer) noexcept;
 
#ifndef NDEBUG
  [[nodiscard]] bool hasAllocated(void* pointer, size_t size) const noexcept;
#endif
 
  void print(std::ostream& os = std::cout, int indent = 0) const;
 
  friend std::ostream& operator<<(
      std::ostream& os, const MemoryManager& memoryManager);
 
private:
  MemoryAllocator& mBaseAllocator;
 
#ifdef NDEBUG
  FreeListAllocator mFreeListAllocator;
 
  PoolAllocator mPoolAllocator;
#else
  FreeListAllocator::Debug mFreeListAllocator;
 
  PoolAllocator::Debug mPoolAllocator;
#endif
};
 
} // namespace dart::common
 
#include "dart/common/detail/MemoryManager-impl.hpp"
 
#endif // DART_COMMON_MEMORYMANAGER_HPP_