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c963b3c804
* Generic Math Update Updated Several functions in Ryujinx.Common/Utilities/BitUtils to use generic math * Updated BitUtil calls * Removed Whitespace * Switched decrement * Fixed changed method calls. The method calls were originally changed on accident due to me relying too much on intellisense doing stuff for me * Update Ryujinx.Common/Utilities/BitUtils.cs Co-authored-by: gdkchan <gab.dark.100@gmail.com> Co-authored-by: gdkchan <gab.dark.100@gmail.com>
63 lines
No EOL
2 KiB
C#
63 lines
No EOL
2 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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namespace Ryujinx.HLE.HOS.Kernel.Memory
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{
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class KSharedMemory : KAutoObject
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{
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private readonly KPageList _pageList;
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private readonly ulong _ownerPid;
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private readonly KMemoryPermission _ownerPermission;
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private readonly KMemoryPermission _userPermission;
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public KSharedMemory(
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KernelContext context,
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SharedMemoryStorage storage,
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ulong ownerPid,
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KMemoryPermission ownerPermission,
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KMemoryPermission userPermission) : base(context)
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{
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_pageList = storage.GetPageList();
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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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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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KMemoryPermission 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(KPageTableBase memoryManager, ulong address, ulong size, KProcess process)
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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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return memoryManager.UnmapPages(address, _pageList, MemoryState.SharedMemory);
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}
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}
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} |