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https://github.com/ryujinx-mirror/ryujinx.git
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95017b8c66
* Back to the origins: Make memory manager take guest PA rather than host address once again * Direct mapping with alias support on Windows * Fixes and remove more of the emulated shared memory * Linux support * Make shared and transfer memory not depend on SharedMemoryStorage * More efficient view mapping on Windows (no more restricted to 4KB pages at a time) * Handle potential access violations caused by partial unmap * Implement host mapping using shared memory on Linux * Add new GetPhysicalAddressChecked method, used to ensure the virtual address is mapped before address translation Also align GetRef behaviour with software memory manager * We don't need a mirrorable memory block for software memory manager mode * Disable memory aliasing tests while we don't have shared memory support on Mac * Shared memory & SIGBUS handler for macOS * Fix typo + nits + re-enable memory tests * Set MAP_JIT_DARWIN on x86 Mac too * Add back the address space mirror * Only set MAP_JIT_DARWIN if we are mapping as executable * Disable aliasing tests again (still fails on Mac) * Fix UnmapView4KB (by not casting size to int) * Use ref counting on memory blocks to delay closing the shared memory handle until all blocks using it are disposed * Address PR feedback * Make RO hold a reference to the guest process memory manager to avoid early disposal Co-authored-by: nastys <nastys@users.noreply.github.com>
129 lines
No EOL
3.9 KiB
C#
129 lines
No EOL
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 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 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(_pageList, 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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public KernelResult 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(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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KernelResult result = memoryManager.MapPages(address, _pageList, state, KMemoryPermission.ReadAndWrite);
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if (result == KernelResult.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 KernelResult 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(size, 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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KernelResult result = memoryManager.UnmapPages(address, _pageList, state);
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if (result == KernelResult.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) != 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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} |