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Misc fixes on the arena allocator (#364)
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commit
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@ -45,6 +45,33 @@ namespace Ryujinx.HLE.Memory
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Rg.Position += Size;
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Rg.Size -= Size;
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if (Rg.Size == 0)
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{
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//Region is empty, just remove it.
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FreeRegions.Remove(Node);
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}
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else if (Node.Previous != null)
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{
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//Re-sort based on size (smaller first).
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Node = Node.Previous;
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FreeRegions.Remove(Node.Next);
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while (Node != null && (ulong)Node.Value.Size > (ulong)Rg.Size)
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{
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Node = Node.Previous;
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}
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if (Node != null)
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{
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FreeRegions.AddAfter(Node, Rg);
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}
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else
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{
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FreeRegions.AddFirst(Rg);
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}
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}
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TotalUsedSize += Size;
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return true;
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@ -65,7 +92,7 @@ namespace Ryujinx.HLE.Memory
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Region NewRg = new Region(Position, Size);
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LinkedListNode<Region> Node = FreeRegions.First;
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LinkedListNode<Region> PrevSz = Node;
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LinkedListNode<Region> PrevSz = null;
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while (Node != null)
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{
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@ -77,27 +104,38 @@ namespace Ryujinx.HLE.Memory
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if (Rg.Position == End)
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{
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//Current region position matches the end of the freed region,
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//just merge the two and remove the current region from the list.
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NewRg.Size += Rg.Size;
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FreeRegions.Remove(Node);
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}
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else if (RgEnd == Position)
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{
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//End of the current region matches the position of the freed region,
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//just merge the two and remove the current region from the list.
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NewRg.Position = Rg.Position;
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NewRg.Size += Rg.Size;
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FreeRegions.Remove(Node);
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}
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else if ((ulong)Rg.Size < (ulong)NewRg.Size &&
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(ulong)Rg.Size > (ulong)PrevSz.Value.Size)
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else
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{
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PrevSz = Node;
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if (PrevSz == null)
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{
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PrevSz = Node;
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}
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else if ((ulong)Rg.Size < (ulong)NewRg.Size &&
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(ulong)Rg.Size > (ulong)PrevSz.Value.Size)
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{
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PrevSz = Node;
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}
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}
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Node = NextNode;
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}
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if ((ulong)PrevSz.Value.Size < (ulong)Size)
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if (PrevSz != null && (ulong)PrevSz.Value.Size < (ulong)Size)
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{
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FreeRegions.AddAfter(PrevSz, NewRg);
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}
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