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Improve kernel IPC related syscalls (#1379)

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* Implement session count decrement when the handle is closed

* Remove unused field

* Implement SendSyncRequestWithUserBuffer, SendAsyncRequestWithUserBuffer and ReplyAndReceiveWithUserBuffer syscalls

* Nits

* Fix swapped copy dst/src

* Add missing pointer buffer descriptor write on reply

* Fix IPC unaligned buffer copy and restoring client attributes on reply

* Oops

* Fix SetIpcMappingPermission

* Fix unaligned copy bugs

* Free memory used for temporary IPC buffers
This commit is contained in:
gdkchan 2020-07-17 01:19:07 -03:00 • committed by GitHub
parent 46f8cef6a9
commit 9f6b24edfd
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GPG key ID: 4AEE18F83AFDEB23
14 changed files with 705 additions and 247 deletions
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76
Ryujinx.HLE/HOS/Kernel/Ipc/KClientPort.cs
View file

@ -1,21 +1,19 @@
using Ryujinx.HLE.HOS.Kernel.Common;
using Ryujinx.HLE.HOS.Kernel.Process;
using Ryujinx.HLE.HOS.Services;
using System.Threading;
namespace Ryujinx.HLE.HOS.Kernel.Ipc
{
class KClientPort : KSynchronizationObject
{
private int _sessionsCount;
private int _currentCapacity;
private readonly int _maxSessions;
private readonly KPort _parent;
public bool IsLight => _parent.IsLight;
private readonly object _countIncLock;
// TODO: Remove that, we need it for now to allow HLE
// SM implementation to work with the new IPC system.
public IpcService Service { get; set; }
@ -24,8 +22,6 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
{
_maxSessions = maxSessions;
_parent = parent;
_countIncLock = new object();
}
public KernelResult Connect(out KClientSession clientSession)
@ -40,26 +36,14 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
return KernelResult.ResLimitExceeded;
}
lock (_countIncLock)
if (!IncrementSessionsCount())
{
if (_sessionsCount < _maxSessions)
{
_sessionsCount++;
}
else
{
currentProcess.ResourceLimit?.Release(LimitableResource.Session, 1);
currentProcess.ResourceLimit?.Release(LimitableResource.Session, 1);
return KernelResult.SessionCountExceeded;
}
if (_currentCapacity < _sessionsCount)
{
_currentCapacity = _sessionsCount;
}
return KernelResult.SessionCountExceeded;
}
KSession session = new KSession(KernelContext);
KSession session = new KSession(KernelContext, this);
if (Service != null)
{
@ -93,18 +77,11 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
return KernelResult.ResLimitExceeded;
}
lock (_countIncLock)
if (!IncrementSessionsCount())
{
if (_sessionsCount < _maxSessions)
{
_sessionsCount++;
}
else
{
currentProcess.ResourceLimit?.Release(LimitableResource.Session, 1);
currentProcess.ResourceLimit?.Release(LimitableResource.Session, 1);
return KernelResult.SessionCountExceeded;
}
return KernelResult.SessionCountExceeded;
}
KLightSession session = new KLightSession(KernelContext);
@ -124,6 +101,43 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
return result;
}
private bool IncrementSessionsCount()
{
while (true)
{
int currentCount = _sessionsCount;
if (currentCount < _maxSessions)
{
if (Interlocked.CompareExchange(ref _sessionsCount, currentCount + 1, currentCount) == currentCount)
{
return true;
}
}
else
{
return false;
}
}
}
public void Disconnect()
{
KernelContext.CriticalSection.Enter();
SignalIfMaximumReached(Interlocked.Decrement(ref _sessionsCount));
KernelContext.CriticalSection.Leave();
}
private void SignalIfMaximumReached(int value)
{
if (value == _maxSessions)
{
Signal();
}
}
public new static KernelResult RemoveName(KernelContext context, string name)
{
KAutoObject foundObj = FindNamedObject(context, name);