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authorTSR Berry <20988865+TSRBerry@users.noreply.github.com>2023-04-08 01:22:00 +0200
committerMary <thog@protonmail.com>2023-04-27 23:51:14 +0200
commitcee712105850ac3385cd0091a923438167433f9f (patch)
tree4a5274b21d8b7f938c0d0ce18736d3f2993b11b1 /Ryujinx.Memory/Range/NonOverlappingRangeList.cs
parentcd124bda587ef09668a971fa1cac1c3f0cfc9f21 (diff)
Move solution and projects to src
Diffstat (limited to 'Ryujinx.Memory/Range/NonOverlappingRangeList.cs')
-rw-r--r--Ryujinx.Memory/Range/NonOverlappingRangeList.cs106
1 files changed, 0 insertions, 106 deletions
diff --git a/Ryujinx.Memory/Range/NonOverlappingRangeList.cs b/Ryujinx.Memory/Range/NonOverlappingRangeList.cs
deleted file mode 100644
index 60b2b378..00000000
--- a/Ryujinx.Memory/Range/NonOverlappingRangeList.cs
+++ /dev/null
@@ -1,106 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-namespace Ryujinx.Memory.Range
-{
- /// <summary>
- /// A range list that assumes ranges are non-overlapping, with list items that can be split in two to avoid overlaps.
- /// </summary>
- /// <typeparam name="T">Type of the range.</typeparam>
- class NonOverlappingRangeList<T> : RangeList<T> where T : INonOverlappingRange
- {
- /// <summary>
- /// Finds a list of regions that cover the desired (address, size) range.
- /// If this range starts or ends in the middle of an existing region, it is split and only the relevant part is added.
- /// If there is no matching region, or there is a gap, then new regions are created with the factory.
- /// Regions are added to the list in address ascending order.
- /// </summary>
- /// <param name="list">List to add found regions to</param>
- /// <param name="address">Start address of the search region</param>
- /// <param name="size">Size of the search region</param>
- /// <param name="factory">Factory for creating new ranges</param>
- public void GetOrAddRegions(List<T> list, ulong address, ulong size, Func<ulong, ulong, T> factory)
- {
- // (regarding the specific case this generalized function is used for)
- // A new region may be split into multiple parts if multiple virtual regions have mapped to it.
- // For instance, while a virtual mapping could cover 0-2 in physical space, the space 0-1 may have already been reserved...
- // So we need to return both the split 0-1 and 1-2 ranges.
-
- var results = new T[1];
- int count = FindOverlapsNonOverlapping(address, size, ref results);
-
- if (count == 0)
- {
- // The region is fully unmapped. Create and add it to the range list.
- T region = factory(address, size);
- list.Add(region);
- Add(region);
- }
- else
- {
- ulong lastAddress = address;
- ulong endAddress = address + size;
-
- for (int i = 0; i < count; i++)
- {
- T region = results[i];
- if (count == 1 && region.Address == address && region.Size == size)
- {
- // Exact match, no splitting required.
- list.Add(region);
- return;
- }
-
- if (lastAddress < region.Address)
- {
- // There is a gap between this region and the last. We need to fill it.
- T fillRegion = factory(lastAddress, region.Address - lastAddress);
- list.Add(fillRegion);
- Add(fillRegion);
- }
-
- if (region.Address < address)
- {
- // Split the region around our base address and take the high half.
-
- region = Split(region, address);
- }
-
- if (region.EndAddress > address + size)
- {
- // Split the region around our end address and take the low half.
-
- Split(region, address + size);
- }
-
- list.Add(region);
- lastAddress = region.EndAddress;
- }
-
- if (lastAddress < endAddress)
- {
- // There is a gap between this region and the end. We need to fill it.
- T fillRegion = factory(lastAddress, endAddress - lastAddress);
- list.Add(fillRegion);
- Add(fillRegion);
- }
- }
- }
-
- /// <summary>
- /// Splits a region around a target point and updates the region list.
- /// The original region's size is modified, but its address stays the same.
- /// A new region starting from the split address is added to the region list and returned.
- /// </summary>
- /// <param name="region">The region to split</param>
- /// <param name="splitAddress">The address to split with</param>
- /// <returns>The new region (high part)</returns>
- private T Split(T region, ulong splitAddress)
- {
- T newRegion = (T)region.Split(splitAddress);
- Update(region);
- Add(newRegion);
- return newRegion;
- }
- }
-}