Remove unused physical region tracking (#2085)

* Remove unused physical region tracking

* Update comments

1 files changed, 0 insertions, 97 deletions

diff --git a/Ryujinx.Memory/Tracking/PhysicalRegion.cs b/Ryujinx.Memory/Tracking/PhysicalRegion.cs
deleted file mode 100644
index 683186b1..00000000
--- a/Ryujinx.Memory/Tracking/PhysicalRegion.cs
+++ /dev/null
@@ -1,97 +0,0 @@
-using Ryujinx.Memory.Range;
-using System.Collections.Generic;
-
-namespace Ryujinx.Memory.Tracking
-{
-    /// <summary>
-    /// A region of physical memory.
-    /// </summary>
-    class PhysicalRegion : AbstractRegion
-    {
-        public List<VirtualRegion> VirtualParents = new List<VirtualRegion>();
-        public MemoryPermission Protection { get; private set; }
-        public MemoryTracking Tracking;
-
-        public PhysicalRegion(MemoryTracking tracking, ulong address, ulong size) : base(address, size)
-        {
-            Tracking = tracking;
-            Protection = MemoryPermission.ReadAndWrite;
-        }
-
-        public override void Signal(ulong address, ulong size, bool write)
-        {
-            Protection = MemoryPermission.ReadAndWrite;
-            Tracking.ProtectPhysicalRegion(this, MemoryPermission.ReadAndWrite); // Remove our protection immedately.
-            foreach (var parent in VirtualParents)
-            {
-                parent.Signal(address, size, write);
-            }
-        }
-
-        /// <summary>
-        /// Update the protection of this region, based on our parent's requested protection.
-        /// </summary>
-        public void UpdateProtection()
-        {
-            // Re-evaluate protection, and commit to the block.
-
-            lock (Tracking.TrackingLock)
-            {
-                MemoryPermission result = MemoryPermission.ReadAndWrite;
-                foreach (var parent in VirtualParents)
-                {
-                    result &= parent.GetRequiredPermission();
-                    if (result == 0) break;
-                }
-
-                if (Protection != result)
-                {
-                    Protection = result;
-                    Tracking.ProtectPhysicalRegion(this, result);
-                }
-            }
-        }
-
-        public override INonOverlappingRange Split(ulong splitAddress)
-        {
-            PhysicalRegion newRegion = new PhysicalRegion(Tracking, splitAddress, EndAddress - splitAddress);
-            Size = splitAddress - Address;
-
-            // The new region inherits all of our parents.
-            newRegion.VirtualParents = new List<VirtualRegion>(VirtualParents);
-            foreach (var parent in VirtualParents)
-            {
-                parent.AddChild(newRegion);
-            }
-
-            return newRegion;
-        }
-
-        /// <summary>
-        /// Remove a parent virtual region from this physical region. Assumes that the tracking lock has been obtained.
-        /// </summary>
-        /// <param name="region">Region to remove</param>
-        /// <returns>True if there are no more parents and we should be removed, false otherwise.</returns>
-        public bool RemoveParent(VirtualRegion region)
-        {
-            VirtualParents.Remove(region);
-            UpdateProtection();
-            if (VirtualParents.Count == 0)
-            {
-                return true;
-            }
-            return false;
-        }
-
-        /// <summary>
-        /// Deletes this physical region if there are no more virtual parents.
-        /// </summary>
-        public void TryDelete()
-        {
-            if (VirtualParents.Count == 0)
-            {
-                Tracking.RemovePhysical(this);
-            }
-        }
-    }
-}