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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>
49 lines
1.4 KiB
C#
49 lines
1.4 KiB
C#
using System;
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namespace Ryujinx.HLE.HOS.Kernel.Memory
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{
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class SharedMemoryStorage
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{
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private readonly KernelContext _context;
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private readonly KPageList _pageList;
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private readonly ulong _size;
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public SharedMemoryStorage(KernelContext context, KPageList pageList)
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{
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_context = context;
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_pageList = pageList;
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_size = pageList.GetPagesCount() * KPageTableBase.PageSize;
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foreach (KPageNode pageNode in pageList)
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{
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ulong address = pageNode.Address - DramMemoryMap.DramBase;
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ulong size = pageNode.PagesCount * KPageTableBase.PageSize;
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context.Memory.Commit(address, size);
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}
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}
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public void ZeroFill()
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{
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for (ulong offset = 0; offset < _size; offset += sizeof(ulong))
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{
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GetRef<ulong>(offset) = 0;
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}
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}
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public ref T GetRef<T>(ulong offset) where T : unmanaged
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{
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if (_pageList.Nodes.Count == 1)
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{
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ulong address = _pageList.Nodes.First.Value.Address - DramMemoryMap.DramBase;
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return ref _context.Memory.GetRef<T>(address + offset);
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}
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throw new NotImplementedException("Non-contiguous shared memory is not yet supported.");
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}
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public KPageList GetPageList()
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{
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return _pageList;
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}
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}
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}
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