Ryujinx/Ryujinx.HLE/HOS/Kernel/KSharedMemory.cs
Alex Barney fb1d9493a3 Adjust naming conventions and general refactoring in HLE Project (#527)
* 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

* Apply previous refactorings to the merged code
2018-12-06 09:16:24 -02:00

68 lines
2.0 KiB
C#

using Ryujinx.Common;
namespace Ryujinx.HLE.HOS.Kernel
{
class KSharedMemory
{
private KPageList _pageList;
private long _ownerPid;
private MemoryPermission _ownerPermission;
private MemoryPermission _userPermission;
public KSharedMemory(
KPageList pageList,
long ownerPid,
MemoryPermission ownerPermission,
MemoryPermission userPermission)
{
_pageList = pageList;
_ownerPid = ownerPid;
_ownerPermission = ownerPermission;
_userPermission = userPermission;
}
public KernelResult MapIntoProcess(
KMemoryManager memoryManager,
ulong address,
ulong size,
KProcess process,
MemoryPermission permission)
{
ulong pagesCountRounded = BitUtils.DivRoundUp(size, KMemoryManager.PageSize);
if (_pageList.GetPagesCount() != pagesCountRounded)
{
return KernelResult.InvalidSize;
}
MemoryPermission expectedPermission = process.Pid == _ownerPid
? _ownerPermission
: _userPermission;
if (permission != expectedPermission)
{
return KernelResult.InvalidPermission;
}
return memoryManager.MapPages(address, _pageList, MemoryState.SharedMemory, permission);
}
public KernelResult UnmapFromProcess(
KMemoryManager memoryManager,
ulong address,
ulong size,
KProcess process)
{
ulong pagesCountRounded = BitUtils.DivRoundUp(size, KMemoryManager.PageSize);
if (_pageList.GetPagesCount() != pagesCountRounded)
{
return KernelResult.InvalidSize;
}
return memoryManager.UnmapPages(address, _pageList, MemoryState.SharedMemory);
}
}
}