1 files changed, 55 insertions, 0 deletions
diff --git a/src/Ryujinx.Memory/Tracking/IMultiRegionHandle.cs b/src/Ryujinx.Memory/Tracking/IMultiRegionHandle.cs
new file mode 100644
index 00000000..71bd602f
--- /dev/null
+++ b/src/Ryujinx.Memory/Tracking/IMultiRegionHandle.cs
@@ -0,0 +1,55 @@
+using System;
+
+namespace Ryujinx.Memory.Tracking
+{
+    public interface IMultiRegionHandle : IDisposable
+    {
+        /// <summary>
+        /// True if any write has occurred to the whole region since the last use of QueryModified (with no subregion specified).
+        /// </summary>
+        bool Dirty { get; }
+
+        /// <summary>
+        /// Force the range of handles to be dirty, without reprotecting.
+        /// </summary>
+        /// <param name="address">Start address of the range</param>
+        /// <param name="size">Size of the range</param>
+        public void ForceDirty(ulong address, ulong size);
+
+        /// <summary>
+        /// Check if any part of the region has been modified, and perform an action for each.
+        /// Contiguous modified regions are combined.
+        /// </summary>
+        /// <param name="modifiedAction">Action to perform for modified regions</param>
+        void QueryModified(Action<ulong, ulong> modifiedAction);
+
+
+        /// <summary>
+        /// Check if part of the region has been modified within a given range, and perform an action for each.
+        /// The range is aligned to the level of granularity of the contained handles.
+        /// Contiguous modified regions are combined.
+        /// </summary>
+        /// <param name="address">Start address of the range</param>
+        /// <param name="size">Size of the range</param>
+        /// <param name="modifiedAction">Action to perform for modified regions</param>
+        void QueryModified(ulong address, ulong size, Action<ulong, ulong> modifiedAction);
+
+        /// <summary>
+        /// Check if part of the region has been modified within a given range, and perform an action for each.
+        /// The sequence number provided is compared with each handle's saved sequence number. 
+        /// If it is equal, then the handle's dirty flag is ignored. Otherwise, the sequence number is saved.
+        /// The range is aligned to the level of granularity of the contained handles.
+        /// Contiguous modified regions are combined.
+        /// </summary>
+        /// <param name="address">Start address of the range</param>
+        /// <param name="size">Size of the range</param>
+        /// <param name="modifiedAction">Action to perform for modified regions</param>
+        /// <param name="sequenceNumber">Current sequence number</param>
+        void QueryModified(ulong address, ulong size, Action<ulong, ulong> modifiedAction, int sequenceNumber);
+
+        /// <summary>
+        /// Signal that one of the subregions of this multi-region has been modified. This sets the overall dirty flag.
+        /// </summary>
+        void SignalWrite();
+    }
+}