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 /Ryujinx.Common/Memory/PartialUnmaps/ThreadLocalMap.cs | |
| parent | cd124bda587ef09668a971fa1cac1c3f0cfc9f21 (diff) | |
Move solution and projects to src
Diffstat (limited to 'Ryujinx.Common/Memory/PartialUnmaps/ThreadLocalMap.cs')
| -rw-r--r-- | Ryujinx.Common/Memory/PartialUnmaps/ThreadLocalMap.cs | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/Ryujinx.Common/Memory/PartialUnmaps/ThreadLocalMap.cs b/Ryujinx.Common/Memory/PartialUnmaps/ThreadLocalMap.cs deleted file mode 100644 index a3bd5be8..00000000 --- a/Ryujinx.Common/Memory/PartialUnmaps/ThreadLocalMap.cs +++ /dev/null @@ -1,92 +0,0 @@ -using System.Runtime.InteropServices; -using System.Threading; - -using static Ryujinx.Common.Memory.PartialUnmaps.PartialUnmapHelpers; - -namespace Ryujinx.Common.Memory.PartialUnmaps -{ - /// <summary> - /// A simple fixed size thread safe map that can be used from native code. - /// Integer thread IDs map to corresponding structs. - /// </summary> - /// <typeparam name="T">The value type for the map</typeparam> - [StructLayout(LayoutKind.Sequential, Pack = 1)] - public struct ThreadLocalMap<T> where T : unmanaged - { - public const int MapSize = 20; - - public Array20<int> ThreadIds; - public Array20<T> Structs; - - public static int ThreadIdsOffset; - public static int StructsOffset; - - /// <summary> - /// Populates the field offsets for use when emitting native code. - /// </summary> - static ThreadLocalMap() - { - ThreadLocalMap<T> instance = new ThreadLocalMap<T>(); - - ThreadIdsOffset = OffsetOf(ref instance, ref instance.ThreadIds); - StructsOffset = OffsetOf(ref instance, ref instance.Structs); - } - - /// <summary> - /// Gets the index of a given thread ID in the map, or reserves one. - /// When reserving a struct, its value is set to the given initial value. - /// Returns -1 when there is no space to reserve a new entry. - /// </summary> - /// <param name="threadId">Thread ID to use as a key</param> - /// <param name="initial">Initial value of the associated struct.</param> - /// <returns>The index of the entry, or -1 if none</returns> - public int GetOrReserve(int threadId, T initial) - { - // Try get a match first. - - for (int i = 0; i < MapSize; i++) - { - int compare = Interlocked.CompareExchange(ref ThreadIds[i], threadId, threadId); - - if (compare == threadId) - { - return i; - } - } - - // Try get a free entry. Since the id is assumed to be unique to this thread, we know it doesn't exist yet. - - for (int i = 0; i < MapSize; i++) - { - int compare = Interlocked.CompareExchange(ref ThreadIds[i], threadId, 0); - - if (compare == 0) - { - Structs[i] = initial; - return i; - } - } - - return -1; - } - - /// <summary> - /// Gets the struct value for a given map entry. - /// </summary> - /// <param name="index">Index of the entry</param> - /// <returns>A reference to the struct value</returns> - public ref T GetValue(int index) - { - return ref Structs[index]; - } - - /// <summary> - /// Releases an entry from the map. - /// </summary> - /// <param name="index">Index of the entry to release</param> - public void Release(int index) - { - Interlocked.Exchange(ref ThreadIds[index], 0); - } - } -} |
