mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-09-10 09:48:51 +02:00
* Rewrite scheduler context switch code * Fix race in UnmapIpcRestorePermission * Fix thread exit issue that could leave the scheduler in a invalid state * Change context switch method to not wait on guest thread, remove spin wait, use SignalAndWait to pass control * Remove multi-core setting (it is always on now) * Re-enable assert * Remove multicore from default config and schema * Fix race in KTimeManager
144 lines
No EOL
4 KiB
C#
144 lines
No EOL
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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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 = KernelStatic.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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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 = KernelStatic.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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} |