text: /*
   * Copyright (C) 2017-2020 Intel Corporation
   *
   * SPDX-License-Identifier: MIT
   *
   */
  
  #pragma once
  
  #include <cinttypes>
  #include <cstdlib>
  #include <limits>
  
  namespace NEO {
  
  struct OsHandle;
  struct ResidencyData;
  
  using OsGraphicsHandle = OsHandle;
  
  constexpr int maxFragmentsCount = 3;
  
  enum class FragmentPosition {
      NONE = 0,
      LEADING,
      MIDDLE,
      TRAILING
  };
  
  enum OverlapStatus {
      FRAGMENT_NOT_OVERLAPING_WITH_ANY_OTHER = 0,
      FRAGMENT_WITHIN_STORED_FRAGMENT,
      FRAGMENT_WITH_EXACT_SIZE_AS_STORED_FRAGMENT,
      FRAGMENT_OVERLAPING_AND_BIGGER_THEN_STORED_FRAGMENT,
      FRAGMENT_NOT_CHECKED
  };
  
  enum class RequirementsStatus {
      SUCCESS = 0,
      FATAL
  };
  
  struct PartialAllocation {
      FragmentPosition fragmentPosition = FragmentPosition::NONE;
      const void *allocationPtr = nullptr;
      size_t allocationSize = 0u;
  };
  
  struct AllocationRequirements {
      PartialAllocation allocationFragments[maxFragmentsCount];
      uint64_t totalRequiredSize = 0u;
      uint32_t requiredFragmentsCount = 0u;
      uint32_t rootDeviceIndex = std::numeric_limits<uint32_t>::max();
  };
  
  struct FragmentStorage {
      const void *fragmentCpuPointer = nullptr;
      size_t fragmentSize = 0;
      int refCount = 0;
      OsHandle *osInternalStorage = nullptr;
      ResidencyData *residency = nullptr;
      bool driverAllocation = false;
  };
  
  struct AllocationStorageData {
      OsHandle *osHandleStorage = nullptr;
      size_t fragmentSize = 0;
      const void *cpuPtr = nullptr;
      bool freeTheFragment = false;
      ResidencyData *residency = nullptr;
  };
  
  struct OsHandleStorage {
      AllocationStorageData fragmentStorageData[maxFragmentsCount];
      uint32_t fragmentCount = 0;
  };
  
  } // namespace NEO
  