diff options
| author | TSR Berry <20988865+TSRBerry@users.noreply.github.com> | 2023-04-08 01:22:00 +0200 |
|---|---|---|
| committer | Mary <thog@protonmail.com> | 2023-04-27 23:51:14 +0200 |
| commit | cee712105850ac3385cd0091a923438167433f9f (patch) | |
| tree | 4a5274b21d8b7f938c0d0ce18736d3f2993b11b1 /src/Ryujinx.Graphics.Gpu/Memory/CounterCache.cs | |
| parent | cd124bda587ef09668a971fa1cac1c3f0cfc9f21 (diff) | |
Move solution and projects to src
Diffstat (limited to 'src/Ryujinx.Graphics.Gpu/Memory/CounterCache.cs')
| -rw-r--r-- | src/Ryujinx.Graphics.Gpu/Memory/CounterCache.cs | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/src/Ryujinx.Graphics.Gpu/Memory/CounterCache.cs b/src/Ryujinx.Graphics.Gpu/Memory/CounterCache.cs new file mode 100644 index 00000000..e763a899 --- /dev/null +++ b/src/Ryujinx.Graphics.Gpu/Memory/CounterCache.cs @@ -0,0 +1,191 @@ +using Ryujinx.Graphics.GAL; +using System.Collections.Generic; + +namespace Ryujinx.Graphics.Gpu.Memory +{ + /// <summary> + /// Represents the GPU counter cache. + /// </summary> + class CounterCache + { + private readonly struct CounterEntry + { + public ulong Address { get; } + public ICounterEvent Event { get; } + + public CounterEntry(ulong address, ICounterEvent evt) + { + Address = address; + Event = evt; + } + } + + private readonly List<CounterEntry> _items; + + /// <summary> + /// Creates a new instance of the GPU counter cache. + /// </summary> + public CounterCache() + { + _items = new List<CounterEntry>(); + } + + /// <summary> + /// Adds a new counter to the counter cache, or updates a existing one. + /// </summary> + /// <param name="gpuVa">GPU virtual address where the counter will be written in memory</param> + public void AddOrUpdate(ulong gpuVa, ICounterEvent evt) + { + int index = BinarySearch(gpuVa); + + CounterEntry entry = new CounterEntry(gpuVa, evt); + + if (index < 0) + { + _items.Insert(~index, entry); + } + else + { + _items[index] = entry; + } + } + + /// <summary> + /// Handles removal of counters written to a memory region being unmapped. + /// </summary> + /// <param name="sender">Sender object</param> + /// <param name="e">Event arguments</param> + public void MemoryUnmappedHandler(object sender, UnmapEventArgs e) => RemoveRange(e.Address, e.Size); + + private void RemoveRange(ulong gpuVa, ulong size) + { + int index = BinarySearch(gpuVa + size - 1); + + if (index < 0) + { + index = ~index; + } + + if (index >= _items.Count || !InRange(gpuVa, size, _items[index].Address)) + { + return; + } + + int count = 1; + + while (index > 0 && InRange(gpuVa, size, _items[index - 1].Address)) + { + index--; + count++; + } + + // Notify the removed counter events that their result should no longer be written out. + for (int i = 0; i < count; i++) + { + ICounterEvent evt = _items[index + i].Event; + if (evt != null) + { + evt.Invalid = true; + } + } + + _items.RemoveRange(index, count); + } + + /// <summary> + /// Checks whenever an address falls inside a given range. + /// </summary> + /// <param name="startVa">Range start address</param> + /// <param name="size">Range size</param> + /// <param name="gpuVa">Address being checked</param> + /// <returns>True if the address falls inside the range, false otherwise</returns> + private static bool InRange(ulong startVa, ulong size, ulong gpuVa) + { + return gpuVa >= startVa && gpuVa < startVa + size; + } + + /// <summary> + /// Check if any counter value was written to the specified GPU virtual memory address. + /// </summary> + /// <param name="gpuVa">GPU virtual address</param> + /// <returns>True if any counter value was written on the specified address, false otherwise</returns> + public bool Contains(ulong gpuVa) + { + return BinarySearch(gpuVa) >= 0; + } + + /// <summary> + /// Flush any counter value written to the specified GPU virtual memory address. + /// </summary> + /// <param name="gpuVa">GPU virtual address</param> + /// <returns>True if any counter value was written on the specified address, false otherwise</returns> + public bool FindAndFlush(ulong gpuVa) + { + int index = BinarySearch(gpuVa); + if (index > 0) + { + _items[index].Event?.Flush(); + + return true; + } + else + { + return false; + } + } + + /// <summary> + /// Find any counter event that would write to the specified GPU virtual memory address. + /// </summary> + /// <param name="gpuVa">GPU virtual address</param> + /// <returns>The counter event, or null if not present</returns> + public ICounterEvent FindEvent(ulong gpuVa) + { + int index = BinarySearch(gpuVa); + if (index > 0) + { + return _items[index].Event; + } + else + { + return null; + } + } + + /// <summary> + /// Performs binary search of an address on the list. + /// </summary> + /// <param name="address">Address to search</param> + /// <returns>Index of the item, or complement of the index of the nearest item with lower value</returns> + private int BinarySearch(ulong address) + { + int left = 0; + int right = _items.Count - 1; + + while (left <= right) + { + int range = right - left; + + int middle = left + (range >> 1); + + CounterEntry item = _items[middle]; + + if (item.Address == address) + { + return middle; + } + + if (address < item.Address) + { + right = middle - 1; + } + else + { + left = middle + 1; + } + } + + return ~left; + } + } +} |