69 lines
2.0 KiB
C#
69 lines
2.0 KiB
C#
using Ryujinx.HLE.HOS.Kernel.Common;
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using Ryujinx.HLE.HOS.Kernel.Process;
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using Ryujinx.Memory.Range;
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using System;
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using System.Collections.Generic;
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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 List<HostMemoryRange> _ranges;
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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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_ranges = new List<HostMemoryRange>();
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}
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public KernelResult 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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KernelResult result = creator.MemoryManager.BorrowTransferMemory(_ranges, address, size, permission);
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if (result != KernelResult.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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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, _ranges) != KernelResult.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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} |