Less invasive fix for EventFd blocking operations (#3394)

Ryujinx.Graphics.OpenGL/Pipeline.cs

@@ -597,6 +597,8 @@ namespace Ryujinx.Graphics.OpenGL
                         GL.EndTransformFeedback();
                     }
 
+                    GL.ClipControl(ClipOrigin.UpperLeft, ClipDepthMode.NegativeOneToOne);
+
                     _drawTexture.Draw(
                         view,
                         samp,
@@ -627,6 +629,8 @@ namespace Ryujinx.Graphics.OpenGL
                     {
                         GL.BeginTransformFeedback(_tfTopology);
                     }
+
+                    RestoreClipControl();
                 }
             }
         }

Ryujinx.HLE/HOS/Kernel/Process/KProcess.cs

@@ -735,11 +735,12 @@ namespace Ryujinx.HLE.HOS.Kernel.Process
             ulong argsPtr,
             ulong stackTop,
             int priority,
-            int cpuCore)
+            int cpuCore,
+            ThreadStart customThreadStart = null)
         {
             lock (_processLock)
             {
-                return thread.Initialize(entrypoint, argsPtr, stackTop, priority, cpuCore, this, ThreadType.User, null);
+                return thread.Initialize(entrypoint, argsPtr, stackTop, priority, cpuCore, this, ThreadType.User, customThreadStart);
             }
         }
 

Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall.cs

@@ -2350,6 +2350,18 @@ namespace Ryujinx.HLE.HOS.Kernel.SupervisorCall
             [PointerSized] ulong stackTop,
             int priority,
             int cpuCore)
+        {
+            return CreateThread(out handle, entrypoint, argsPtr, stackTop, priority, cpuCore, null);
+        }
+
+        public KernelResult CreateThread(
+            out int handle,
+            ulong entrypoint,
+            ulong argsPtr,
+            ulong stackTop,
+            int priority,
+            int cpuCore,
+            ThreadStart customThreadStart)
         {
             handle = 0;
 
@@ -2386,7 +2398,8 @@ namespace Ryujinx.HLE.HOS.Kernel.SupervisorCall
                 argsPtr,
                 stackTop,
                 priority,
-                cpuCore);
+                cpuCore,
+                customThreadStart);
 
             if (result == KernelResult.Success)
             {

Ryujinx.HLE/HOS/Services/ServerBase.cs

@@ -1,3 +1,4 @@
+using Ryujinx.Common.Logging;
 using Ryujinx.HLE.HOS.Ipc;
 using Ryujinx.HLE.HOS.Kernel;
 using Ryujinx.HLE.HOS.Kernel.Common;
@@ -38,15 +39,15 @@ namespace Ryujinx.HLE.HOS.Services
         private readonly Dictionary<int, Func<IpcService>> _ports = new Dictionary<int, Func<IpcService>>();
 
         public ManualResetEvent InitDone { get; }
-        public Func<IpcService> SmObjectFactory { get; }
         public string Name { get; }
+        public Func<IpcService> SmObjectFactory { get; }
 
         public ServerBase(KernelContext context, string name, Func<IpcService> smObjectFactory = null)
         {
             InitDone = new ManualResetEvent(false);
+            _context = context;
             Name = name;
             SmObjectFactory = smObjectFactory;
-            _context = context;
 
             const ProcessCreationFlags flags =
                 ProcessCreationFlags.EnableAslr |
@@ -56,7 +57,7 @@ namespace Ryujinx.HLE.HOS.Services
 
             ProcessCreationInfo creationInfo = new ProcessCreationInfo("Service", 1, 0, 0x8000000, 1, flags, 0, 0);
 
-            KernelStatic.StartInitialProcess(context, creationInfo, DefaultCapabilities, 44, ServerLoop);
+            KernelStatic.StartInitialProcess(context, creationInfo, DefaultCapabilities, 44, Main);
         }
 
         private void AddPort(int serverPortHandle, Func<IpcService> objectFactory)
@@ -80,6 +81,11 @@ namespace Ryujinx.HLE.HOS.Services
             _sessions.Add(serverSessionHandle, obj);
         }
 
+        private void Main()
+        {
+            ServerLoop();
+        }
+
         private void ServerLoop()
         {
             _selfProcess = KernelStatic.GetCurrentProcess();

Ryujinx.HLE/HOS/Services/Sockets/Bsd/Impl/EventFileDescriptor.cs

@@ -8,7 +8,6 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
     {
         private ulong _value;
         private readonly EventFdFlags _flags;
-        private AutoResetEvent _event;
 
         private object _lock = new object();
 
@@ -19,9 +18,13 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
 
         public EventFileDescriptor(ulong value, EventFdFlags flags)
         {
+            // FIXME: We should support blocking operations.
+            // Right now they can't be supported because it would cause the
+            // service to lock up as we only have one thread processing requests.
+            flags |= EventFdFlags.NonBlocking;
+
             _value = value;
             _flags = flags;
-            _event = new AutoResetEvent(false);
 
             WriteEvent = new ManualResetEvent(true);
             ReadEvent = new ManualResetEvent(true);
@@ -31,7 +34,6 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
 
         public void Dispose()
         {
-            _event.Dispose();
             WriteEvent.Dispose();
             ReadEvent.Dispose();
         }
@@ -57,7 +59,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
                     {
                         while (_value == 0)
                         {
-                            _event.WaitOne();
+                            Monitor.Wait(_lock);
                         }
                     }
                     else
@@ -106,7 +108,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
                 {
                     if (Blocking)
                     {
-                        _event.WaitOne();
+                        Monitor.Wait(_lock);
                     }
                     else
                     {
@@ -119,7 +121,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
                 writeSize = sizeof(ulong);
 
                 _value += count;
-                _event.Set();
+                Monitor.Pulse(_lock);
 
                 WriteEvent.Set();