1 files changed, 143 insertions, 0 deletions
diff --git a/src/Ryujinx.Graphics.Gpu/Synchronization/SynchronizationManager.cs b/src/Ryujinx.Graphics.Gpu/Synchronization/SynchronizationManager.cs
new file mode 100644
index 00000000..968de930
--- /dev/null
+++ b/src/Ryujinx.Graphics.Gpu/Synchronization/SynchronizationManager.cs
@@ -0,0 +1,143 @@
+using Ryujinx.Common.Logging;
+using System;
+using System.Threading;
+
+namespace Ryujinx.Graphics.Gpu.Synchronization
+{
+    /// <summary>
+    /// GPU synchronization manager.
+    /// </summary>
+    public class SynchronizationManager
+    {
+        /// <summary>
+        /// The maximum number of syncpoints supported by the GM20B.
+        /// </summary>
+        public const int MaxHardwareSyncpoints = 192;
+
+        /// <summary>
+        /// Array containing all hardware syncpoints.
+        /// </summary>
+        private Syncpoint[] _syncpoints;
+
+        public SynchronizationManager()
+        {
+            _syncpoints = new Syncpoint[MaxHardwareSyncpoints];
+
+            for (uint i = 0; i < _syncpoints.Length; i++)
+            {
+                _syncpoints[i] = new Syncpoint(i);
+            }
+        }
+
+        /// <summary>
+        /// Increment the value of a syncpoint with a given id.
+        /// </summary>
+        /// <param name="id">The id of the syncpoint</param>
+        /// <exception cref="System.ArgumentOutOfRangeException">Thrown when id >= MaxHardwareSyncpoints</exception>
+        /// <returns>The incremented value of the syncpoint</returns>
+        public uint IncrementSyncpoint(uint id)
+        {
+            if (id >= MaxHardwareSyncpoints)
+            {
+                throw new ArgumentOutOfRangeException(nameof(id));
+            }
+
+            return _syncpoints[id].Increment();
+        }
+
+        /// <summary>
+        /// Get the value of a syncpoint with a given id.
+        /// </summary>
+        /// <param name="id">The id of the syncpoint</param>
+        /// <exception cref="System.ArgumentOutOfRangeException">Thrown when id >= MaxHardwareSyncpoints</exception>
+        /// <returns>The value of the syncpoint</returns>
+        public uint GetSyncpointValue(uint id)
+        {
+            if (id >= MaxHardwareSyncpoints)
+            {
+                throw new ArgumentOutOfRangeException(nameof(id));
+            }
+
+            return _syncpoints[id].Value;
+        }
+
+        /// <summary>
+        /// Register a new callback on a syncpoint with a given id at a target threshold.
+        /// The callback will be called once the threshold is reached and will automatically be unregistered.
+        /// </summary>
+        /// <param name="id">The id of the syncpoint</param>
+        /// <param name="threshold">The target threshold</param>
+        /// <param name="callback">The callback to call when the threshold is reached</param>
+        /// <exception cref="System.ArgumentOutOfRangeException">Thrown when id >= MaxHardwareSyncpoints</exception>
+        /// <returns>The created SyncpointWaiterHandle object or null if already past threshold</returns>
+        public SyncpointWaiterHandle RegisterCallbackOnSyncpoint(uint id, uint threshold, Action<SyncpointWaiterHandle> callback)
+        {
+            if (id >= MaxHardwareSyncpoints)
+            {
+                throw new ArgumentOutOfRangeException(nameof(id));
+            }
+
+            return _syncpoints[id].RegisterCallback(threshold, callback);
+        }
+
+        /// <summary>
+        /// Unregister a callback on a given syncpoint.
+        /// </summary>
+        /// <param name="id">The id of the syncpoint</param>
+        /// <param name="waiterInformation">The waiter information to unregister</param>
+        /// <exception cref="System.ArgumentOutOfRangeException">Thrown when id >= MaxHardwareSyncpoints</exception>
+        public void UnregisterCallback(uint id, SyncpointWaiterHandle waiterInformation)
+        {
+            if (id >= MaxHardwareSyncpoints)
+            {
+                throw new ArgumentOutOfRangeException(nameof(id));
+            }
+
+            _syncpoints[id].UnregisterCallback(waiterInformation);
+        }
+
+        /// <summary>
+        /// Wait on a syncpoint with a given id at a target threshold.
+        /// The callback will be called once the threshold is reached and will automatically be unregistered.
+        /// </summary>
+        /// <param name="id">The id of the syncpoint</param>
+        /// <param name="threshold">The target threshold</param>
+        /// <param name="timeout">The timeout</param>
+        /// <exception cref="System.ArgumentOutOfRangeException">Thrown when id >= MaxHardwareSyncpoints</exception>
+        /// <returns>True if timed out</returns>
+        public bool WaitOnSyncpoint(uint id, uint threshold, TimeSpan timeout)
+        {
+            if (id >= MaxHardwareSyncpoints)
+            {
+                throw new ArgumentOutOfRangeException(nameof(id));
+            }
+
+            // TODO: Remove this when GPU channel scheduling will be implemented.
+            if (timeout == Timeout.InfiniteTimeSpan)
+            {
+                timeout = TimeSpan.FromSeconds(1);
+            }
+
+            using (ManualResetEvent waitEvent = new ManualResetEvent(false))
+            {
+                var info = _syncpoints[id].RegisterCallback(threshold, (x) => waitEvent.Set());
+
+                if (info == null)
+                {
+                    return false;
+                }
+
+                bool signaled = waitEvent.WaitOne(timeout);
+
+                if (!signaled && info != null)
+                {
+                    Logger.Error?.Print(LogClass.Gpu, $"Wait on syncpoint {id} for threshold {threshold} took more than {timeout.TotalMilliseconds}ms, resuming execution...");
+
+                    _syncpoints[id].UnregisterCallback(info);
+                }
+
+                return !signaled;
+            }
+        }
+    }
+}