From 3d98e1361b2f1c3993aa7f1e9b1ac49fc5b6e512 Mon Sep 17 00:00:00 2001
From: riperiperi <rhy3756547@hotmail.com>
Date: Sat, 29 Oct 2022 23:07:37 +0100
Subject: GPU: Use a bitmap to track buffer modified flags. (#3775)
* Initial implementation
* Some improvements.
* Fix incorrect cast
* Performance improvement and improved correctness
* Add very fast path when all handles are checked.
* Slightly faster
* Add comment
* De-virtualize region handle
All region handles are now bitmap backed.
* Remove non-bitmap tracking
* Remove unused methods
* Add docs, remove unused methods
* Address Feedback
* Rename file
---
Ryujinx.Memory/Tracking/MemoryTracking.cs | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
(limited to 'Ryujinx.Memory/Tracking/MemoryTracking.cs')
diff --git a/Ryujinx.Memory/Tracking/MemoryTracking.cs b/Ryujinx.Memory/Tracking/MemoryTracking.cs
index f2ac17ff..9aa7c7ff 100644
--- a/Ryujinx.Memory/Tracking/MemoryTracking.cs
+++ b/Ryujinx.Memory/Tracking/MemoryTracking.cs
@@ -176,6 +176,26 @@ namespace Ryujinx.Memory.Tracking
}
}
+ /// <summary>
+ /// Obtains a memory tracking handle for the given virtual region. This should be disposed when finished with.
+ /// </summary>
+ /// <param name="address">CPU virtual address of the region</param>
+ /// <param name="size">Size of the region</param>
+ /// <param name="bitmap">The bitmap owning the dirty flag for this handle</param>
+ /// <param name="bit">The bit of this handle within the dirty flag</param>
+ /// <returns>The memory tracking handle</returns>
+ internal RegionHandle BeginTrackingBitmap(ulong address, ulong size, ConcurrentBitmap bitmap, int bit)
+ {
+ (address, size) = PageAlign(address, size);
+
+ lock (TrackingLock)
+ {
+ RegionHandle handle = new RegionHandle(this, address, size, bitmap, bit, _memoryManager.IsRangeMapped(address, size));
+
+ return handle;
+ }
+ }
+
/// <summary>
/// Signal that a virtual memory event happened at the given location (one byte).
/// </summary>
--
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