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![Alex Barney](/assets/img/avatar_default.png)
* Renaming part 1 * Renaming part 2 * Renaming part 3 * Renaming part 4 * Renaming part 5 * Renaming part 6 * Renaming part 7 * Renaming part 8 * Renaming part 9 * Renaming part 10 * General cleanup * Thought I got all of these * Apply #595 * Additional renaming * Tweaks from feedback * Rename files
79 lines
2.2 KiB
C#
79 lines
2.2 KiB
C#
using ChocolArm64.Memory;
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using System.Collections.Concurrent;
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namespace Ryujinx.Graphics.Memory
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{
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class NvGpuVmmCache
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{
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private const int PageBits = MemoryManager.PageBits;
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private const long PageSize = MemoryManager.PageSize;
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private const long PageMask = MemoryManager.PageMask;
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private ConcurrentDictionary<long, int>[] _cachedPages;
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private MemoryManager _memory;
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public NvGpuVmmCache(MemoryManager memory)
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{
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_memory = memory;
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_cachedPages = new ConcurrentDictionary<long, int>[1 << 20];
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}
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public bool IsRegionModified(long position, long size, NvGpuBufferType bufferType)
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{
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long va = position;
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long pa = _memory.GetPhysicalAddress(va);
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long endAddr = (va + size + PageMask) & ~PageMask;
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long addrTruncated = va & ~PageMask;
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bool modified = _memory.IsRegionModified(addrTruncated, endAddr - addrTruncated);
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int newBuffMask = 1 << (int)bufferType;
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long cachedPagesCount = 0;
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while (va < endAddr)
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{
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long page = _memory.GetPhysicalAddress(va) >> PageBits;
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ConcurrentDictionary<long, int> dictionary = _cachedPages[page];
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if (dictionary == null)
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{
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dictionary = new ConcurrentDictionary<long, int>();
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_cachedPages[page] = dictionary;
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}
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else if (modified)
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{
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_cachedPages[page].Clear();
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}
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if (dictionary.TryGetValue(pa, out int currBuffMask))
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{
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if ((currBuffMask & newBuffMask) != 0)
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{
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cachedPagesCount++;
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}
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else
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{
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dictionary[pa] |= newBuffMask;
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}
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}
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else
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{
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dictionary[pa] = newBuffMask;
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}
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va += PageSize;
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}
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return cachedPagesCount != (endAddr - addrTruncated) >> PageBits;
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}
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}
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} |