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/*
* Copyright (C) 2018-2023 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#pragma once
#include <map>
#include <mutex>
namespace NEO {
struct AllocationRequirements;
struct AllocationStorageData;
struct OsHandleStorage;
struct FragmentStorage;
enum class RequirementsStatus;
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
};
struct HostPtrEntryKey {
const void *ptr = nullptr;
uint32_t rootDeviceIndex = std::numeric_limits<uint32_t>::max();
bool operator<(const HostPtrEntryKey &key) const {
return rootDeviceIndex < key.rootDeviceIndex ||
((ptr < key.ptr) && (rootDeviceIndex == key.rootDeviceIndex));
}
};
using HostPtrFragmentsContainer = std::map<HostPtrEntryKey, FragmentStorage>;
class MemoryManager;
class HostPtrManager {
public:
FragmentStorage *getFragment(HostPtrEntryKey key);
OsHandleStorage prepareOsStorageForAllocation(MemoryManager &memoryManager, size_t size, const void *ptr, uint32_t rootDeviceIndex);
void releaseHandleStorage(uint32_t rootDeviceIndex, OsHandleStorage &fragments);
bool releaseHostPtr(uint32_t rootDeviceIndex, const void *ptr);
void storeFragment(uint32_t rootDeviceIndex, AllocationStorageData &storageData);
void storeFragment(uint32_t rootDeviceIndex, FragmentStorage &fragment);
[[nodiscard]] std::unique_lock<std::recursive_mutex> obtainOwnership();
protected:
static AllocationRequirements getAllocationRequirements(uint32_t rootDeviceIndex, const void *inputPtr, size_t size);
OsHandleStorage populateAlreadyAllocatedFragments(AllocationRequirements &requirements);
FragmentStorage *getFragmentAndCheckForOverlaps(uint32_t rootDeviceIndex, const void *inputPtr, size_t size, OverlapStatus &overlappingStatus);
RequirementsStatus checkAllocationsForOverlapping(MemoryManager &memoryManager, AllocationRequirements *requirements);
HostPtrFragmentsContainer::iterator findElement(HostPtrEntryKey key);
HostPtrFragmentsContainer partialAllocations;
std::recursive_mutex allocationsMutex;
};
} // namespace NEO
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