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Fix session service disposal and improve transfer memory implementation (#1397)

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* Fix session service disposal and improve transfer memory implementation

* Remove useless assignment
This commit is contained in:
gdkchan 2020-07-19 15:24:18 -03:00 • committed by GitHub
parent 3af2ce74ec
commit e7f2a5ecb7
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5 changed files with 123 additions and 113 deletions
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55
Ryujinx.HLE/HOS/Kernel/Memory/KTransferMemory.cs
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@ -1,16 +1,63 @@
using Ryujinx.HLE.HOS.Kernel.Common;
using Ryujinx.HLE.HOS.Kernel.Process;
using System;
namespace Ryujinx.HLE.HOS.Kernel.Memory
{
class KTransferMemory : KAutoObject
{
public ulong Address { get; private set; }
public ulong Size { get; private set; }
private KProcess _creator;
public KTransferMemory(KernelContext context, ulong address, ulong size) : base(context)
private readonly KPageList _pageList;
public ulong Address { get; private set; }
public ulong Size => _pageList.GetPagesCount() * KMemoryManager.PageSize;
public MemoryPermission Permission { get; private set; }
private bool _hasBeenInitialized;
private bool _isMapped;
public KTransferMemory(KernelContext context) : base(context)
{
_pageList = new KPageList();
}
public KernelResult Initialize(ulong address, ulong size, MemoryPermission permission)
{
KProcess creator = KernelContext.Scheduler.GetCurrentProcess();
_creator = creator;
KernelResult result = creator.MemoryManager.BorrowTransferMemory(_pageList, address, size, permission);
if (result != KernelResult.Success)
{
return result;
}
creator.IncrementReferenceCount();
Permission = permission;
Address = address;
Size = size;
_hasBeenInitialized = true;
_isMapped = false;
return result;
}
protected override void Destroy()
{
if (_hasBeenInitialized)
{
if (!_isMapped && _creator.MemoryManager.UnborrowTransferMemory(Address, Size, _pageList) != KernelResult.Success)
{
throw new InvalidOperationException("Unexpected failure restoring transfer memory attributes.");
}
_creator.ResourceLimit?.Release(LimitableResource.TransferMemory, 1);
_creator.DecrementReferenceCount();
}
}
}
}