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* IPC refactor part 3 + 4: New server HIPC message processor with source generator based serialization * Make types match on calls to AlignUp/AlignDown * Formatting * Address some PR feedback * Move BitfieldExtensions to Ryujinx.Common.Utilities and consolidate implementations * Rename Reader/Writer to SpanReader/SpanWriter and move to Ryujinx.Common.Memory * Implement EventType * Address more PR feedback * Log request processing errors since they are not normal * Rename waitable to multiwait and add missing lock * PR feedback * Ac_K PR feedback
130 lines
3.9 KiB
C#
130 lines
3.9 KiB
C#
using Ryujinx.Common;
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using Ryujinx.HLE.HOS.Kernel.Common;
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using Ryujinx.HLE.HOS.Kernel.Process;
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using Ryujinx.Horizon.Common;
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using System;
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namespace Ryujinx.HLE.HOS.Kernel.Memory
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{
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class KTransferMemory : KAutoObject
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{
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private KProcess _creator;
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// TODO: Remove when we no longer need to read it from the owner directly.
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public KProcess Creator => _creator;
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private readonly KPageList _pageList;
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public ulong Address { get; private set; }
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public ulong Size { get; private set; }
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public KMemoryPermission Permission { get; private set; }
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private bool _hasBeenInitialized;
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private bool _isMapped;
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public KTransferMemory(KernelContext context) : base(context)
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{
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_pageList = new KPageList();
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}
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public KTransferMemory(KernelContext context, SharedMemoryStorage storage) : base(context)
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{
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_pageList = storage.GetPageList();
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Permission = KMemoryPermission.ReadAndWrite;
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_hasBeenInitialized = true;
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_isMapped = false;
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}
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public Result Initialize(ulong address, ulong size, KMemoryPermission permission)
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{
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KProcess creator = KernelStatic.GetCurrentProcess();
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_creator = creator;
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Result result = creator.MemoryManager.BorrowTransferMemory(_pageList, address, size, permission);
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if (result != Result.Success)
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{
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return result;
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}
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creator.IncrementReferenceCount();
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Permission = permission;
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Address = address;
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Size = size;
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_hasBeenInitialized = true;
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_isMapped = false;
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return result;
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}
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public Result MapIntoProcess(
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KPageTableBase memoryManager,
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ulong address,
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ulong size,
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KProcess process,
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KMemoryPermission permission)
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{
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if (_pageList.GetPagesCount() != BitUtils.DivRoundUp<ulong>(size, KPageTableBase.PageSize))
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{
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return KernelResult.InvalidSize;
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}
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if (permission != Permission || _isMapped)
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{
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return KernelResult.InvalidState;
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}
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MemoryState state = Permission == KMemoryPermission.None ? MemoryState.TransferMemoryIsolated : MemoryState.TransferMemory;
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Result result = memoryManager.MapPages(address, _pageList, state, KMemoryPermission.ReadAndWrite);
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if (result == Result.Success)
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{
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_isMapped = true;
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}
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return result;
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}
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public Result UnmapFromProcess(
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KPageTableBase memoryManager,
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ulong address,
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ulong size,
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KProcess process)
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{
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if (_pageList.GetPagesCount() != BitUtils.DivRoundUp<ulong>(size, (ulong)KPageTableBase.PageSize))
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{
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return KernelResult.InvalidSize;
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}
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MemoryState state = Permission == KMemoryPermission.None ? MemoryState.TransferMemoryIsolated : MemoryState.TransferMemory;
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Result result = memoryManager.UnmapPages(address, _pageList, state);
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if (result == Result.Success)
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{
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_isMapped = false;
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}
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return result;
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}
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protected override void Destroy()
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{
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if (_hasBeenInitialized)
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{
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if (!_isMapped && _creator.MemoryManager.UnborrowTransferMemory(Address, Size, _pageList) != Result.Success)
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{
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throw new InvalidOperationException("Unexpected failure restoring transfer memory attributes.");
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}
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_creator.ResourceLimit?.Release(LimitableResource.TransferMemory, 1);
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_creator.DecrementReferenceCount();
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}
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}
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}
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} |