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// Copyright 2020 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SRC_DAWN_NATIVE_D3D12_RESIDENCYMANAGERD3D12_H_
#define SRC_DAWN_NATIVE_D3D12_RESIDENCYMANAGERD3D12_H_
#include "dawn/common/LinkedList.h"
#include "dawn/native/D3D12Backend.h"
#include "dawn/native/Error.h"
#include "dawn/native/dawn_platform.h"
#include "dawn/native/d3d12/d3d12_platform.h"
namespace dawn::native::d3d12 {
class Device;
class Heap;
class Pageable;
class ResidencyManager {
public:
explicit ResidencyManager(Device* device);
MaybeError LockAllocation(Pageable* pageable);
void UnlockAllocation(Pageable* pageable);
MaybeError EnsureCanAllocate(uint64_t allocationSize, MemorySegment memorySegment);
MaybeError EnsureHeapsAreResident(Heap** heaps, size_t heapCount);
uint64_t SetExternalMemoryReservation(MemorySegment segment, uint64_t requestedReservationSize);
void TrackResidentAllocation(Pageable* pageable);
void RestrictBudgetForTesting(uint64_t artificialBudgetCap);
private:
struct MemorySegmentInfo {
const DXGI_MEMORY_SEGMENT_GROUP dxgiSegment;
LinkedList<Pageable> lruCache = {};
uint64_t budget = 0;
uint64_t usage = 0;
uint64_t externalReservation = 0;
uint64_t externalRequest = 0;
};
struct VideoMemoryInfo {
MemorySegmentInfo local = {DXGI_MEMORY_SEGMENT_GROUP_LOCAL};
MemorySegmentInfo nonLocal = {DXGI_MEMORY_SEGMENT_GROUP_NON_LOCAL};
};
MemorySegmentInfo* GetMemorySegmentInfo(MemorySegment memorySegment);
ResultOrError<uint64_t> EnsureCanMakeResident(uint64_t allocationSize,
MemorySegmentInfo* memorySegment);
ResultOrError<Pageable*> RemoveSingleEntryFromLRU(MemorySegmentInfo* memorySegment);
MaybeError MakeAllocationsResident(MemorySegmentInfo* segment,
uint64_t sizeToMakeResident,
uint64_t numberOfObjectsToMakeResident,
ID3D12Pageable** allocations);
void UpdateVideoMemoryInfo();
void UpdateMemorySegmentInfo(MemorySegmentInfo* segmentInfo);
Device* mDevice;
bool mResidencyManagementEnabled = false;
bool mRestrictBudgetForTesting = false;
VideoMemoryInfo mVideoMemoryInfo = {};
};
} // namespace dawn::native::d3d12
#endif // SRC_DAWN_NATIVE_D3D12_RESIDENCYMANAGERD3D12_H_