1 // Copyright 2020 The Dawn Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef DAWNNATIVE_D3D12_RESIDENCYMANAGERD3D12_H_ 16 #define DAWNNATIVE_D3D12_RESIDENCYMANAGERD3D12_H_ 17 18 #include "common/LinkedList.h" 19 #include "dawn_native/D3D12Backend.h" 20 #include "dawn_native/Error.h" 21 #include "dawn_native/dawn_platform.h" 22 23 #include "dawn_native/d3d12/d3d12_platform.h" 24 25 namespace dawn_native { namespace d3d12 { 26 27 class Device; 28 class Heap; 29 class Pageable; 30 31 class ResidencyManager { 32 public: 33 ResidencyManager(Device* device); 34 35 MaybeError LockAllocation(Pageable* pageable); 36 void UnlockAllocation(Pageable* pageable); 37 38 MaybeError EnsureCanAllocate(uint64_t allocationSize, MemorySegment memorySegment); 39 MaybeError EnsureHeapsAreResident(Heap** heaps, size_t heapCount); 40 41 uint64_t SetExternalMemoryReservation(MemorySegment segment, 42 uint64_t requestedReservationSize); 43 44 void TrackResidentAllocation(Pageable* pageable); 45 46 void RestrictBudgetForTesting(uint64_t artificialBudgetCap); 47 48 private: 49 struct MemorySegmentInfo { 50 const DXGI_MEMORY_SEGMENT_GROUP dxgiSegment; 51 LinkedList<Pageable> lruCache = {}; 52 uint64_t budget = 0; 53 uint64_t usage = 0; 54 uint64_t externalReservation = 0; 55 uint64_t externalRequest = 0; 56 }; 57 58 struct VideoMemoryInfo { 59 MemorySegmentInfo local = {DXGI_MEMORY_SEGMENT_GROUP_LOCAL}; 60 MemorySegmentInfo nonLocal = {DXGI_MEMORY_SEGMENT_GROUP_NON_LOCAL}; 61 }; 62 63 MemorySegmentInfo* GetMemorySegmentInfo(MemorySegment memorySegment); 64 ResultOrError<uint64_t> EnsureCanMakeResident(uint64_t allocationSize, 65 MemorySegmentInfo* memorySegment); 66 ResultOrError<Pageable*> RemoveSingleEntryFromLRU(MemorySegmentInfo* memorySegment); 67 MaybeError MakeAllocationsResident(MemorySegmentInfo* segment, 68 uint64_t sizeToMakeResident, 69 uint64_t numberOfObjectsToMakeResident, 70 ID3D12Pageable** allocations); 71 void UpdateVideoMemoryInfo(); 72 void UpdateMemorySegmentInfo(MemorySegmentInfo* segmentInfo); 73 74 Device* mDevice; 75 bool mResidencyManagementEnabled = false; 76 bool mRestrictBudgetForTesting = false; 77 VideoMemoryInfo mVideoMemoryInfo = {}; 78 }; 79 80 }} // namespace dawn_native::d3d12 81 82 #endif // DAWNNATIVE_D3D12_RESIDENCYMANAGERD3D12_H_ 83