mirror of
https://github.com/ryujinx-mirror/ryujinx.git
synced 2024-12-05 04:57:55 +01:00
9f6b24edfd
* 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
153 lines
4.4 KiB
C#
153 lines
4.4 KiB
C#
using Ryujinx.HLE.HOS.Kernel.Common;
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using Ryujinx.HLE.HOS.Kernel.Process;
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using Ryujinx.HLE.HOS.Services;
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using System.Threading;
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namespace Ryujinx.HLE.HOS.Kernel.Ipc
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{
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class KClientPort : KSynchronizationObject
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{
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private int _sessionsCount;
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private readonly int _maxSessions;
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private readonly KPort _parent;
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public bool IsLight => _parent.IsLight;
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// TODO: Remove that, we need it for now to allow HLE
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// SM implementation to work with the new IPC system.
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public IpcService Service { get; set; }
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public KClientPort(KernelContext context, KPort parent, int maxSessions) : base(context)
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{
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_maxSessions = maxSessions;
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_parent = parent;
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}
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public KernelResult Connect(out KClientSession clientSession)
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{
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clientSession = null;
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KProcess currentProcess = KernelContext.Scheduler.GetCurrentProcess();
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if (currentProcess.ResourceLimit != null &&
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!currentProcess.ResourceLimit.Reserve(LimitableResource.Session, 1))
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{
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return KernelResult.ResLimitExceeded;
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}
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if (!IncrementSessionsCount())
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{
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currentProcess.ResourceLimit?.Release(LimitableResource.Session, 1);
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return KernelResult.SessionCountExceeded;
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}
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KSession session = new KSession(KernelContext, this);
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if (Service != null)
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{
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session.ClientSession.Service = Service;
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}
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KernelResult result = _parent.EnqueueIncomingSession(session.ServerSession);
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if (result != KernelResult.Success)
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{
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session.ClientSession.DecrementReferenceCount();
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session.ServerSession.DecrementReferenceCount();
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return result;
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}
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clientSession = session.ClientSession;
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return result;
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}
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public KernelResult ConnectLight(out KLightClientSession clientSession)
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{
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clientSession = null;
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KProcess currentProcess = KernelContext.Scheduler.GetCurrentProcess();
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if (currentProcess.ResourceLimit != null &&
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!currentProcess.ResourceLimit.Reserve(LimitableResource.Session, 1))
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{
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return KernelResult.ResLimitExceeded;
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}
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if (!IncrementSessionsCount())
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{
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currentProcess.ResourceLimit?.Release(LimitableResource.Session, 1);
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return KernelResult.SessionCountExceeded;
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}
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KLightSession session = new KLightSession(KernelContext);
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KernelResult result = _parent.EnqueueIncomingLightSession(session.ServerSession);
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if (result != KernelResult.Success)
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{
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session.ClientSession.DecrementReferenceCount();
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session.ServerSession.DecrementReferenceCount();
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return result;
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}
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clientSession = session.ClientSession;
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return result;
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}
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private bool IncrementSessionsCount()
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{
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while (true)
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{
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int currentCount = _sessionsCount;
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if (currentCount < _maxSessions)
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{
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if (Interlocked.CompareExchange(ref _sessionsCount, currentCount + 1, currentCount) == currentCount)
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{
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return true;
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}
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}
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else
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{
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return false;
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}
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}
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}
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public void Disconnect()
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{
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KernelContext.CriticalSection.Enter();
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SignalIfMaximumReached(Interlocked.Decrement(ref _sessionsCount));
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KernelContext.CriticalSection.Leave();
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}
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private void SignalIfMaximumReached(int value)
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{
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if (value == _maxSessions)
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{
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Signal();
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}
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}
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public new static KernelResult RemoveName(KernelContext context, string name)
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{
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KAutoObject foundObj = FindNamedObject(context, name);
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if (!(foundObj is KClientPort))
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{
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return KernelResult.NotFound;
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}
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return KAutoObject.RemoveName(context, name);
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}
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}
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} |