Ryujinx-git/Ryujinx.Graphics.Gpu/Memory/MemoryManager.cs

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using Ryujinx.Memory;
using Ryujinx.Memory.Range;
using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
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namespace Ryujinx.Graphics.Gpu.Memory
{
/// <summary>
/// GPU memory manager.
/// </summary>
public class MemoryManager : IWritableBlock
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{
private const int PtLvl0Bits = 14;
private const int PtLvl1Bits = 14;
public const int PtPageBits = 12;
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private const ulong PtLvl0Size = 1UL << PtLvl0Bits;
private const ulong PtLvl1Size = 1UL << PtLvl1Bits;
public const ulong PageSize = 1UL << PtPageBits;
private const ulong PtLvl0Mask = PtLvl0Size - 1;
private const ulong PtLvl1Mask = PtLvl1Size - 1;
public const ulong PageMask = PageSize - 1;
private const int PtLvl0Bit = PtPageBits + PtLvl1Bits;
private const int PtLvl1Bit = PtPageBits;
private const int AddressSpaceBits = PtPageBits + PtLvl1Bits + PtLvl0Bits;
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GPU - Improve Memory Allocation (#1722) * Implement TreeMap from scratch. Begin implementation of MemoryBlockManager * Implement GetFreePosition using MemoryBlocks * Implementation of Memory Management using a Tree. Still some issues to work around, but promising thus far. * Resolved invalid mapping issue. Performance appears promising. * Add tick metrics * Use the logger instead * Use debug loggin instead of info. * Remove unnecessary code. Add descriptions of added functions. * Improve memory allocation even further. As well as improve speed of position fetching. * Add TreeDictionary to Ryujinx Commons Removed Unnecessary Usigns * Add a Performance Profiler + Improve ReserveFixed * Begin transition to allocation in nvdrv * Create singleton nvmemallocator * Moved Allocation into Nv Related Files As requested by gdkchan, any allocation of memory has been moved into the driver files. Mapping remains in the GPU MemoryManager. * Remove unnecessary usings * Add missing descriptions * Correct descriptions * Fix formatting. * Remove unnecessary whitespace * Formatting / Convention Updates * Changes / Fixes Made syntax and convention changes as requested by gdkchan. Fixed an issue where IsRegionUsed would return the wrong boolean. Fixed an issue where GetFreePosition was asked for an address instead of a size. * Undo commenting of Assert in shader cache * Update Ryujinx.Common/Collections/TreeDictionary.cs Co-authored-by: gdkchan <gab.dark.100@gmail.com> * Resolved many suggestions * Implement Improved TreeDictionary Based off of Pseudo code and custom implementations. * Rename _set to _dictionary * Remove unused code * Remove unused code. * Remove unnecessary MapLow function. * Resolve data-structure based issues * Make adjustments to memory management. Deactive de-allocation for now, it causes more harm than good. * Minor refactorings + Re-implement deallocation Also cleaned up unnecessary code. * Add Tests for TreeDictionary * Update data structure to properly balance the tree * Experimental Implementation: 1. Reduce Time to Next Node to O(1) Runtime 2. Reduce While Loop Ct To 2 (In Most Cases) * Address issues w/ Deallocating Memory * Final Build + Fully Implement Dictionary Interface for new Data Structure + Cover All Memory Allocation Edge Cases, particularly w/ Games that De-Allocate a lot. * Minor Corrections Give TreeDictionary its own count (do not depend on inner dictionary) Properly remove adjacent allocations * Add AsList * Fix bug where internal dictionary wasn't being updated w/ new node for overwritten key. * Address comments in review. * Fix issue where block wouldn't break out (Fixes UE4 issues) * Update descriptions * Update descriptions * Reduce Node visibility to protect TreeDictionary Integrity + Remove usage of struct. * Update tests to use new TreeDictionary implementation. * Remove usage of dictionary in TreeDictionary * Refactoring / Renaming * Remove unneeded memoryblock class. * Add space for while * Add space for if * Formatting / descriptions * Clarified some descriptions * Reduce visibility of memory allocator * Edit method names to make more sense as memory blocks are no longer in use. * Make names consistent. * Protect against npe when sucessorof is called against keys that don't exist. (Not in use by memory manager, this is for other prs that might use this data structure) * Possible edge-case resolve * Update Ryujinx.Common/Collections/TreeDictionary.cs Co-authored-by: gdkchan <gab.dark.100@gmail.com> * Update Ryujinx.HLE/HOS/Services/Nv/NvMemoryAllocator.cs Co-authored-by: gdkchan <gab.dark.100@gmail.com> * Reduce # of unnecessary duplicate variables / Reduce visibility of variables only internally used. * Rename count to _count * Update Description of Add method. * Fix copypasta * Address comments * Address comments * Remove whitespace * Address comments, condense variables. * Consolidate vars * Fix whitespace. * Nit * Fix exception msg * Fix arrayIndex check * Fix arrayIndex check + indexer * Remove whitespace from cast Co-authored-by: gdkchan <gab.dark.100@gmail.com>
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public const ulong PteUnmapped = 0xffffffff_ffffffff;
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private readonly ulong[][] _pageTable;
public event EventHandler<UnmapEventArgs> MemoryUnmapped;
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/// <summary>
/// Physical memory where the virtual memory is mapped into.
/// </summary>
internal PhysicalMemory Physical { get; }
/// <summary>
/// Cache of GPU counters.
/// </summary>
internal CounterCache CounterCache { get; }
/// <summary>
/// Creates a new instance of the GPU memory manager.
/// </summary>
/// <param name="physicalMemory">Physical memory that this memory manager will map into</param>
internal MemoryManager(PhysicalMemory physicalMemory)
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{
Physical = physicalMemory;
CounterCache = new CounterCache();
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_pageTable = new ulong[PtLvl0Size][];
MemoryUnmapped += Physical.TextureCache.MemoryUnmappedHandler;
MemoryUnmapped += Physical.BufferCache.MemoryUnmappedHandler;
MemoryUnmapped += CounterCache.MemoryUnmappedHandler;
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}
/// <summary>
/// Reads data from GPU mapped memory.
/// </summary>
/// <typeparam name="T">Type of the data</typeparam>
/// <param name="va">GPU virtual address where the data is located</param>
/// <param name="tracked">True if read tracking is triggered on the memory region</param>
/// <returns>The data at the specified memory location</returns>
public T Read<T>(ulong va, bool tracked = false) where T : unmanaged
{
int size = Unsafe.SizeOf<T>();
if (IsContiguous(va, size))
{
ulong address = Translate(va);
if (tracked)
{
return Physical.ReadTracked<T>(address);
}
else
{
return Physical.Read<T>(address);
}
}
else
{
Span<byte> data = new byte[size];
ReadImpl(va, data, tracked);
return MemoryMarshal.Cast<byte, T>(data)[0];
}
}
/// <summary>
/// Gets a read-only span of data from GPU mapped memory.
/// </summary>
/// <param name="va">GPU virtual address where the data is located</param>
/// <param name="size">Size of the data</param>
Implement lazy flush-on-read for Buffers (SSBO/Copy) (#1790) * Initial implementation of buffer flush (VERY WIP) * Host shaders need to be rebuilt for the SSBO write flag. * New approach with reserved regions and gl sync * Fix a ton of buffer issues. * Remove unused buffer unmapped behaviour * Revert "Remove unused buffer unmapped behaviour" This reverts commit f1700e52fb8760180ac5e0987a07d409d1e70ece. * Delete modified ranges on unmap Fixes potential crashes in Super Smash Bros, where a previously modified range could lie on either side of an unmap. * Cache some more delegates. * Dispose Sync on Close * Also create host sync for GPFifo syncpoint increment. * Copy buffer optimization, add docs * Fix race condition with OpenGL Sync * Enable read tracking on CommandBuffer, insert syncpoint on WaitForIdle * Performance: Only flush individual pages of SSBO at a time This avoids flushing large amounts of data when only a small amount is actually used. * Signal Modified rather than flushing after clear * Fix some docs and code style. * Introduce a new test for tracking memory protection. Sucessfully demonstrates that the bug causing write protection to be cleared by a read action has been fixed. (these tests fail on master) * Address Comments * Add host sync for SetReference This ensures that any indirect draws will correctly flush any related buffer data written before them. Fixes some flashing and misplaced world geometry in MH rise. * Make PageAlign static * Re-enable read tracking, for reads.
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/// <param name="tracked">True if read tracking is triggered on the span</param>
/// <returns>The span of the data at the specified memory location</returns>
public ReadOnlySpan<byte> GetSpan(ulong va, int size, bool tracked = false)
{
if (IsContiguous(va, size))
{
return Physical.GetSpan(Translate(va), size, tracked);
}
else
{
Span<byte> data = new byte[size];
ReadImpl(va, data, tracked);
return data;
}
}
/// <summary>
/// Reads data from a possibly non-contiguous region of GPU mapped memory.
/// </summary>
/// <param name="va">GPU virtual address of the data</param>
/// <param name="data">Span to write the read data into</param>
/// <param name="tracked">True to enable write tracking on read, false otherwise</param>
private void ReadImpl(ulong va, Span<byte> data, bool tracked)
{
if (data.Length == 0)
{
return;
}
int offset = 0, size;
if ((va & PageMask) != 0)
{
ulong pa = Translate(va);
size = Math.Min(data.Length, (int)PageSize - (int)(va & PageMask));
Physical.GetSpan(pa, size, tracked).CopyTo(data.Slice(0, size));
offset += size;
}
for (; offset < data.Length; offset += size)
{
ulong pa = Translate(va + (ulong)offset);
size = Math.Min(data.Length - offset, (int)PageSize);
Physical.GetSpan(pa, size, tracked).CopyTo(data.Slice(offset, size));
}
}
/// <summary>
/// Gets a writable region from GPU mapped memory.
/// </summary>
/// <param name="address">Start address of the range</param>
/// <param name="size">Size in bytes to be range</param>
/// <returns>A writable region with the data at the specified memory location</returns>
public WritableRegion GetWritableRegion(ulong va, int size)
{
if (IsContiguous(va, size))
{
return Physical.GetWritableRegion(Translate(va), size);
}
else
{
Memory<byte> memory = new byte[size];
GetSpan(va, size).CopyTo(memory.Span);
return new WritableRegion(this, va, memory);
}
}
/// <summary>
/// Writes data to GPU mapped memory.
/// </summary>
/// <typeparam name="T">Type of the data</typeparam>
/// <param name="va">GPU virtual address to write the value into</param>
/// <param name="value">The value to be written</param>
public void Write<T>(ulong va, T value) where T : unmanaged
{
Write(va, MemoryMarshal.Cast<T, byte>(MemoryMarshal.CreateSpan(ref value, 1)));
}
/// <summary>
/// Writes data to GPU mapped memory.
/// </summary>
/// <param name="va">GPU virtual address to write the data into</param>
/// <param name="data">The data to be written</param>
public void Write(ulong va, ReadOnlySpan<byte> data)
{
WriteImpl(va, data, Physical.Write);
}
Replace CacheResourceWrite with more general "precise" write (#2684) * Replace CacheResourceWrite with more general "precise" write The goal of CacheResourceWrite was to notify GPU resources when they were modified directly, by looking up the modified address/size in a structure and calling a method on each resource. The downside of this is that each resource cache has to be queried individually, they all have to implement their own way to do this, and it can only signal to resources using the same PhysicalMemory instance. This PR adds the ability to signal a write as "precise" on the tracking, which signals a special handler (if present) which can be used to avoid unnecessary flush actions, or maybe even more. For buffers, precise writes specifically do not flush, and instead punch a hole in the modified range list to indicate that the data on GPU has been replaced. The downside is that precise actions must ignore the page protection bits and always signal - as they need to notify the target resource to ignore the sequence number optimization. I had to reintroduce the sequence number increment after I2M, as removing it was causing issues in rabbids kingdom battle. However - all resources modified by I2M are notified directly to lower their sequence number, so the problem is likely that another unrelated resource is not being properly updated. Thankfully, doing this does not affect performance in the games I tested. This should fix regressions from #2624. Test any games that were broken by that. (RF4, rabbids kingdom battle) I've also added a sequence number increment to ThreedClass.IncrementSyncpoint, as it seems to fix buffer corruption in OpenGL homebrew. (this was a regression from removing sequence number increment from constant buffer update - another unrelated resource thing) * Add tests. * Add XML docs for GpuRegionHandle * Skip UpdateProtection if only precise actions were called This allows precise actions to skip reprotection costs.
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/// <summary>
/// Writes data to GPU mapped memory, destined for a tracked resource.
/// </summary>
/// <param name="va">GPU virtual address to write the data into</param>
/// <param name="data">The data to be written</param>
public void WriteTrackedResource(ulong va, ReadOnlySpan<byte> data)
{
WriteImpl(va, data, Physical.WriteTrackedResource);
}
/// <summary>
/// Writes data to GPU mapped memory without write tracking.
/// </summary>
/// <param name="va">GPU virtual address to write the data into</param>
/// <param name="data">The data to be written</param>
public void WriteUntracked(ulong va, ReadOnlySpan<byte> data)
{
WriteImpl(va, data, Physical.WriteUntracked);
}
private delegate void WriteCallback(ulong address, ReadOnlySpan<byte> data);
/// <summary>
/// Writes data to possibly non-contiguous GPU mapped memory.
/// </summary>
/// <param name="va">GPU virtual address of the region to write into</param>
/// <param name="data">Data to be written</param>
/// <param name="writeCallback">Write callback</param>
private void WriteImpl(ulong va, ReadOnlySpan<byte> data, WriteCallback writeCallback)
{
if (IsContiguous(va, data.Length))
{
writeCallback(Translate(va), data);
}
else
{
int offset = 0, size;
if ((va & PageMask) != 0)
{
ulong pa = Translate(va);
size = Math.Min(data.Length, (int)PageSize - (int)(va & PageMask));
writeCallback(pa, data.Slice(0, size));
offset += size;
}
for (; offset < data.Length; offset += size)
{
ulong pa = Translate(va + (ulong)offset);
size = Math.Min(data.Length - offset, (int)PageSize);
writeCallback(pa, data.Slice(offset, size));
}
}
}
/// <summary>
/// Maps a given range of pages to the specified CPU virtual address.
/// </summary>
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/// <remarks>
/// All addresses and sizes must be page aligned.
/// </remarks>
/// <param name="pa">CPU virtual address to map into</param>
/// <param name="va">GPU virtual address to be mapped</param>
/// <param name="size">Size in bytes of the mapping</param>
public void Map(ulong pa, ulong va, ulong size)
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{
lock (_pageTable)
{
Memory Read/Write Tracking using Region Handles (#1272) * WIP Range Tracking - Texture invalidation seems to have large problems - Buffer/Pool invalidation may have problems - Mirror memory tracking puts an additional `add` in compiled code, we likely just want to make HLE access slower if this is the final solution. - Native project is in the messiest possible location. - [HACK] JIT memory access always uses native "fast" path - [HACK] Trying some things with texture invalidation and views. It works :) Still a few hacks, messy things, slow things More work in progress stuff (also move to memory project) Quite a bit faster now. - Unmapping GPU VA and CPU VA will now correctly update write tracking regions, and invalidate textures for the former. - The Virtual range list is now non-overlapping like the physical one. - Fixed some bugs where regions could leak. - Introduced a weird bug that I still need to track down (consistent invalid buffer in MK8 ribbon road) Move some stuff. I think we'll eventually just put the dll and so for this in a nuget package. Fix rebase. [WIP] MultiRegionHandle variable size ranges - Avoid reprotecting regions that change often (needs some tweaking) - There's still a bug in buffers, somehow. - Might want different api for minimum granularity Fix rebase issue Commit everything needed for software only tracking. Remove native components. Remove more native stuff. Cleanup Use a separate window for the background context, update opentk. (fixes linux) Some experimental changes Should get things working up to scratch - still need to try some things with flush/modification and res scale. Include address with the region action. Initial work to make range tracking work Still a ton of bugs Fix some issues with the new stuff. * Fix texture flush instability There's still some weird behaviour, but it's much improved without this. (textures with cpu modified data were flushing over it) * Find the destination texture for Buffer->Texture full copy Greatly improves performance for nvdec videos (with range tracking) * Further improve texture tracking * Disable Memory Tracking for view parents This is a temporary approach to better match behaviour on master (where invalidations would be soaked up by views, rather than trigger twice) The assumption is that when views are created to a texture, they will cover all of its data anyways. Of course, this can easily be improved in future. * Introduce some tracking tests. WIP * Complete base tests. * Add more tests for multiregion, fix existing test. * Cleanup Part 1 * Remove unnecessary code from memory tracking * Fix some inconsistencies with 3D texture rule. * Add dispose tests. * Use a background thread for the background context. Rather than setting and unsetting a context as current, doing the work on a dedicated thread with signals seems to be a bit faster. Also nerf the multithreading test a bit. * Copy to texture with matching alignment This extends the copy to work for some videos with unusual size, such as tutorial videos in SMO. It will only occur if the destination texture already exists at XCount size. * Track reads for buffer copies. Synchronize new buffers before copying overlaps. * Remove old texture flushing mechanisms. Range tracking all the way, baby. * Wake the background thread when disposing. Avoids a deadlock when games are closed. * Address Feedback 1 * Separate TextureCopy instance for background thread Also `BackgroundContextWorker.InBackground` for a more sensible idenfifier for if we're in a background thread. * Add missing XML docs. * Address Feedback * Maybe I should start drinking coffee. * Some more feedback. * Remove flush warning, Refocus window after making background context
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MemoryUnmapped?.Invoke(this, new UnmapEventArgs(va, size));
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for (ulong offset = 0; offset < size; offset += PageSize)
{
SetPte(va + offset, pa + offset);
}
}
}
/// <summary>
/// Unmaps a given range of pages at the specified GPU virtual memory region.
/// </summary>
/// <param name="va">GPU virtual address to unmap</param>
/// <param name="size">Size in bytes of the region being unmapped</param>
public void Unmap(ulong va, ulong size)
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{
lock (_pageTable)
{
// Event handlers are not expected to be thread safe.
MemoryUnmapped?.Invoke(this, new UnmapEventArgs(va, size));
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for (ulong offset = 0; offset < size; offset += PageSize)
{
SetPte(va + offset, PteUnmapped);
}
}
}
/// <summary>
/// Checks if a region of GPU mapped memory is contiguous.
/// </summary>
/// <param name="va">GPU virtual address of the region</param>
/// <param name="size">Size of the region</param>
/// <returns>True if the region is contiguous, false otherwise</returns>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private bool IsContiguous(ulong va, int size)
{
if (!ValidateAddress(va) || GetPte(va) == PteUnmapped)
{
return false;
}
ulong endVa = (va + (ulong)size + PageMask) & ~PageMask;
va &= ~PageMask;
int pages = (int)((endVa - va) / PageSize);
for (int page = 0; page < pages - 1; page++)
{
if (!ValidateAddress(va + PageSize) || GetPte(va + PageSize) == PteUnmapped)
{
return false;
}
if (Translate(va) + PageSize != Translate(va + PageSize))
{
return false;
}
va += PageSize;
}
return true;
}
/// <summary>
/// Gets the physical regions that make up the given virtual address region.
/// </summary>
/// <param name="va">Virtual address of the range</param>
/// <param name="size">Size of the range</param>
/// <returns>Multi-range with the physical regions</returns>
/// <exception cref="InvalidMemoryRegionException">The memory region specified by <paramref name="va"/> and <paramref name="size"/> is not fully mapped</exception>
public MultiRange GetPhysicalRegions(ulong va, ulong size)
{
if (IsContiguous(va, (int)size))
{
return new MultiRange(Translate(va), size);
}
if (!IsMapped(va))
{
throw new InvalidMemoryRegionException($"The specified GPU virtual address 0x{va:X} is not mapped.");
}
ulong regionStart = Translate(va);
ulong regionSize = Math.Min(size, PageSize - (va & PageMask));
ulong endVa = va + size;
ulong endVaRounded = (endVa + PageMask) & ~PageMask;
va &= ~PageMask;
int pages = (int)((endVaRounded - va) / PageSize);
var regions = new List<MemoryRange>();
for (int page = 0; page < pages - 1; page++)
{
if (!IsMapped(va + PageSize))
{
throw new InvalidMemoryRegionException($"The specified GPU virtual memory range 0x{va:X}..0x{(va + size):X} is not fully mapped.");
}
ulong newPa = Translate(va + PageSize);
if (Translate(va) + PageSize != newPa)
{
regions.Add(new MemoryRange(regionStart, regionSize));
regionStart = newPa;
regionSize = 0;
}
va += PageSize;
regionSize += Math.Min(endVa - va, PageSize);
}
regions.Add(new MemoryRange(regionStart, regionSize));
return new MultiRange(regions.ToArray());
}
/// <summary>
/// Checks if a given GPU virtual memory range is mapped to the same physical regions
/// as the specified physical memory multi-range.
/// </summary>
/// <param name="range">Physical memory multi-range</param>
/// <param name="va">GPU virtual memory address</param>
/// <returns>True if the virtual memory region is mapped into the specified physical one, false otherwise</returns>
public bool CompareRange(MultiRange range, ulong va)
{
va &= ~PageMask;
for (int i = 0; i < range.Count; i++)
{
MemoryRange currentRange = range.GetSubRange(i);
ulong address = currentRange.Address & ~PageMask;
ulong endAddress = (currentRange.EndAddress + PageMask) & ~PageMask;
while (address < endAddress)
{
if (Translate(va) != address)
{
return false;
}
va += PageSize;
address += PageSize;
}
}
return true;
}
/// <summary>
/// Validates a GPU virtual address.
/// </summary>
/// <param name="va">Address to validate</param>
/// <returns>True if the address is valid, false otherwise</returns>
private static bool ValidateAddress(ulong va)
{
return va < (1UL << AddressSpaceBits);
}
/// <summary>
/// Checks if a given page is mapped.
/// </summary>
/// <param name="va">GPU virtual address of the page to check</param>
/// <returns>True if the page is mapped, false otherwise</returns>
public bool IsMapped(ulong va)
{
return Translate(va) != PteUnmapped;
}
/// <summary>
/// Translates a GPU virtual address to a CPU virtual address.
/// </summary>
/// <param name="va">GPU virtual address to be translated</param>
/// <returns>CPU virtual address, or <see cref="PteUnmapped"/> if unmapped</returns>
public ulong Translate(ulong va)
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{
if (!ValidateAddress(va))
{
return PteUnmapped;
}
ulong baseAddress = GetPte(va);
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GPU - Improve Memory Allocation (#1722) * Implement TreeMap from scratch. Begin implementation of MemoryBlockManager * Implement GetFreePosition using MemoryBlocks * Implementation of Memory Management using a Tree. Still some issues to work around, but promising thus far. * Resolved invalid mapping issue. Performance appears promising. * Add tick metrics * Use the logger instead * Use debug loggin instead of info. * Remove unnecessary code. Add descriptions of added functions. * Improve memory allocation even further. As well as improve speed of position fetching. * Add TreeDictionary to Ryujinx Commons Removed Unnecessary Usigns * Add a Performance Profiler + Improve ReserveFixed * Begin transition to allocation in nvdrv * Create singleton nvmemallocator * Moved Allocation into Nv Related Files As requested by gdkchan, any allocation of memory has been moved into the driver files. Mapping remains in the GPU MemoryManager. * Remove unnecessary usings * Add missing descriptions * Correct descriptions * Fix formatting. * Remove unnecessary whitespace * Formatting / Convention Updates * Changes / Fixes Made syntax and convention changes as requested by gdkchan. Fixed an issue where IsRegionUsed would return the wrong boolean. Fixed an issue where GetFreePosition was asked for an address instead of a size. * Undo commenting of Assert in shader cache * Update Ryujinx.Common/Collections/TreeDictionary.cs Co-authored-by: gdkchan <gab.dark.100@gmail.com> * Resolved many suggestions * Implement Improved TreeDictionary Based off of Pseudo code and custom implementations. * Rename _set to _dictionary * Remove unused code * Remove unused code. * Remove unnecessary MapLow function. * Resolve data-structure based issues * Make adjustments to memory management. Deactive de-allocation for now, it causes more harm than good. * Minor refactorings + Re-implement deallocation Also cleaned up unnecessary code. * Add Tests for TreeDictionary * Update data structure to properly balance the tree * Experimental Implementation: 1. Reduce Time to Next Node to O(1) Runtime 2. Reduce While Loop Ct To 2 (In Most Cases) * Address issues w/ Deallocating Memory * Final Build + Fully Implement Dictionary Interface for new Data Structure + Cover All Memory Allocation Edge Cases, particularly w/ Games that De-Allocate a lot. * Minor Corrections Give TreeDictionary its own count (do not depend on inner dictionary) Properly remove adjacent allocations * Add AsList * Fix bug where internal dictionary wasn't being updated w/ new node for overwritten key. * Address comments in review. * Fix issue where block wouldn't break out (Fixes UE4 issues) * Update descriptions * Update descriptions * Reduce Node visibility to protect TreeDictionary Integrity + Remove usage of struct. * Update tests to use new TreeDictionary implementation. * Remove usage of dictionary in TreeDictionary * Refactoring / Renaming * Remove unneeded memoryblock class. * Add space for while * Add space for if * Formatting / descriptions * Clarified some descriptions * Reduce visibility of memory allocator * Edit method names to make more sense as memory blocks are no longer in use. * Make names consistent. * Protect against npe when sucessorof is called against keys that don't exist. (Not in use by memory manager, this is for other prs that might use this data structure) * Possible edge-case resolve * Update Ryujinx.Common/Collections/TreeDictionary.cs Co-authored-by: gdkchan <gab.dark.100@gmail.com> * Update Ryujinx.HLE/HOS/Services/Nv/NvMemoryAllocator.cs Co-authored-by: gdkchan <gab.dark.100@gmail.com> * Reduce # of unnecessary duplicate variables / Reduce visibility of variables only internally used. * Rename count to _count * Update Description of Add method. * Fix copypasta * Address comments * Address comments * Remove whitespace * Address comments, condense variables. * Consolidate vars * Fix whitespace. * Nit * Fix exception msg * Fix arrayIndex check * Fix arrayIndex check + indexer * Remove whitespace from cast Co-authored-by: gdkchan <gab.dark.100@gmail.com>
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if (baseAddress == PteUnmapped)
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{
return PteUnmapped;
}
return baseAddress + (va & PageMask);
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}
/// <summary>
/// Gets the Page Table entry for a given GPU virtual address.
/// </summary>
/// <param name="va">GPU virtual address</param>
/// <returns>Page table entry (CPU virtual address)</returns>
private ulong GetPte(ulong va)
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{
ulong l0 = (va >> PtLvl0Bit) & PtLvl0Mask;
ulong l1 = (va >> PtLvl1Bit) & PtLvl1Mask;
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if (_pageTable[l0] == null)
{
return PteUnmapped;
}
return _pageTable[l0][l1];
}
/// <summary>
/// Sets a Page Table entry at a given GPU virtual address.
/// </summary>
/// <param name="va">GPU virtual address</param>
/// <param name="pte">Page table entry (CPU virtual address)</param>
private void SetPte(ulong va, ulong pte)
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{
ulong l0 = (va >> PtLvl0Bit) & PtLvl0Mask;
ulong l1 = (va >> PtLvl1Bit) & PtLvl1Mask;
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if (_pageTable[l0] == null)
{
_pageTable[l0] = new ulong[PtLvl1Size];
for (ulong index = 0; index < PtLvl1Size; index++)
{
_pageTable[l0][index] = PteUnmapped;
}
}
_pageTable[l0][l1] = pte;
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}
}
}