85dbb9559a
* Rename enum fields
* Naming conventions
* Remove unneeded ".this"
* Remove unneeded semicolons
* Remove unused Usings
* Don't use var
* Remove unneeded enum underlying types
* Explicitly label class visibility
* Remove unneeded @ prefixes
* Remove unneeded commas
* Remove unneeded if expressions
* Method doesn't use unsafe code
* Remove unneeded casts
* Initialized objects don't need an empty constructor
* Remove settings from DotSettings
* Revert "Explicitly label class visibility"
This reverts commit ad5eb5787c.
* Small changes
* Revert external enum renaming
* Changes from feedback
* Remove unneeded property setters
68 lines
No EOL
2 KiB
C#
68 lines
No EOL
2 KiB
C#
using Ryujinx.Common;
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namespace Ryujinx.HLE.HOS.Kernel
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{
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class KSharedMemory
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{
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private KPageList _pageList;
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private long _ownerPid;
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private MemoryPermission _ownerPermission;
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private MemoryPermission _userPermission;
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public KSharedMemory(
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KPageList pageList,
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long ownerPid,
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MemoryPermission ownerPermission,
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MemoryPermission userPermission)
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{
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_pageList = pageList;
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_ownerPid = ownerPid;
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_ownerPermission = ownerPermission;
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_userPermission = userPermission;
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}
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public KernelResult MapIntoProcess(
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KMemoryManager memoryManager,
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ulong address,
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ulong size,
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KProcess process,
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MemoryPermission permission)
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{
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ulong pagesCountRounded = BitUtils.DivRoundUp(size, KMemoryManager.PageSize);
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if (_pageList.GetPagesCount() != pagesCountRounded)
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{
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return KernelResult.InvalidSize;
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}
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MemoryPermission expectedPermission = process.Pid == _ownerPid
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? _ownerPermission
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: _userPermission;
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if (permission != expectedPermission)
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{
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return KernelResult.InvalidPermission;
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}
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return memoryManager.MapPages(address, _pageList, MemoryState.SharedMemory, permission);
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}
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public KernelResult UnmapFromProcess(
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KMemoryManager 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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ulong pagesCountRounded = BitUtils.DivRoundUp(size, KMemoryManager.PageSize);
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if (_pageList.GetPagesCount() != pagesCountRounded)
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{
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return KernelResult.InvalidSize;
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}
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return memoryManager.UnmapPages(address, _pageList, MemoryState.SharedMemory);
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}
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}
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} |