420 lines
13 KiB
C#
420 lines
13 KiB
C#
using ARMeilleure.State;
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using Ryujinx.Common;
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using Ryujinx.Common.Logging;
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using System;
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using System.Buffers.Binary;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using System.IO.Compression;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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using System.Threading;
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using static ARMeilleure.Translation.PTC.PtcFormatter;
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namespace ARMeilleure.Translation.PTC
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{
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class PtcProfiler
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{
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private const string OuterHeaderMagicString = "Pohd\0\0\0\0";
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private const uint InternalVersion = 1866; //! Not to be incremented manually for each change to the ARMeilleure project.
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private const int SaveInterval = 30; // Seconds.
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private const CompressionLevel SaveCompressionLevel = CompressionLevel.Fastest;
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private readonly Ptc _ptc;
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private readonly System.Timers.Timer _timer;
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private readonly ulong _outerHeaderMagic;
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private readonly ManualResetEvent _waitEvent;
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private readonly object _lock;
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private bool _disposed;
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private Hash128 _lastHash;
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public Dictionary<ulong, FuncProfile> ProfiledFuncs { get; private set; }
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public bool Enabled { get; private set; }
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public ulong StaticCodeStart { get; set; }
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public ulong StaticCodeSize { get; set; }
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public PtcProfiler(Ptc ptc)
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{
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_ptc = ptc;
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_timer = new System.Timers.Timer((double)SaveInterval * 1000d);
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_timer.Elapsed += PreSave;
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_outerHeaderMagic = BinaryPrimitives.ReadUInt64LittleEndian(EncodingCache.UTF8NoBOM.GetBytes(OuterHeaderMagicString).AsSpan());
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_waitEvent = new ManualResetEvent(true);
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_lock = new object();
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_disposed = false;
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ProfiledFuncs = new Dictionary<ulong, FuncProfile>();
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Enabled = false;
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}
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public void AddEntry(ulong address, ExecutionMode mode, bool highCq)
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{
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if (IsAddressInStaticCodeRange(address))
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{
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Debug.Assert(!highCq);
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lock (_lock)
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{
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ProfiledFuncs.TryAdd(address, new FuncProfile(mode, highCq: false));
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}
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}
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}
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public void UpdateEntry(ulong address, ExecutionMode mode, bool highCq)
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{
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if (IsAddressInStaticCodeRange(address))
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{
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Debug.Assert(highCq);
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lock (_lock)
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{
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Debug.Assert(ProfiledFuncs.ContainsKey(address));
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ProfiledFuncs[address] = new FuncProfile(mode, highCq: true);
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}
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}
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}
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public bool IsAddressInStaticCodeRange(ulong address)
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{
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return address >= StaticCodeStart && address < StaticCodeStart + StaticCodeSize;
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}
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public ConcurrentQueue<(ulong address, FuncProfile funcProfile)> GetProfiledFuncsToTranslate(TranslatorCache<TranslatedFunction> funcs)
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{
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var profiledFuncsToTranslate = new ConcurrentQueue<(ulong address, FuncProfile funcProfile)>();
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foreach (var profiledFunc in ProfiledFuncs)
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{
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if (!funcs.ContainsKey(profiledFunc.Key))
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{
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profiledFuncsToTranslate.Enqueue((profiledFunc.Key, profiledFunc.Value));
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}
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}
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return profiledFuncsToTranslate;
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}
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public void ClearEntries()
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{
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ProfiledFuncs.Clear();
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ProfiledFuncs.TrimExcess();
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}
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public void PreLoad()
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{
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_lastHash = default;
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string fileNameActual = string.Concat(_ptc.CachePathActual, ".info");
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string fileNameBackup = string.Concat(_ptc.CachePathBackup, ".info");
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FileInfo fileInfoActual = new FileInfo(fileNameActual);
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FileInfo fileInfoBackup = new FileInfo(fileNameBackup);
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if (fileInfoActual.Exists && fileInfoActual.Length != 0L)
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{
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if (!Load(fileNameActual, false))
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{
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if (fileInfoBackup.Exists && fileInfoBackup.Length != 0L)
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{
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Load(fileNameBackup, true);
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}
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}
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}
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else if (fileInfoBackup.Exists && fileInfoBackup.Length != 0L)
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{
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Load(fileNameBackup, true);
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}
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}
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private bool Load(string fileName, bool isBackup)
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{
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using (FileStream compressedStream = new(fileName, FileMode.Open))
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using (DeflateStream deflateStream = new(compressedStream, CompressionMode.Decompress, true))
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{
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OuterHeader outerHeader = DeserializeStructure<OuterHeader>(compressedStream);
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if (!outerHeader.IsHeaderValid())
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{
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InvalidateCompressedStream(compressedStream);
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return false;
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}
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if (outerHeader.Magic != _outerHeaderMagic)
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{
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InvalidateCompressedStream(compressedStream);
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return false;
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}
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if (outerHeader.InfoFileVersion != InternalVersion)
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{
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InvalidateCompressedStream(compressedStream);
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return false;
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}
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if (outerHeader.Endianness != Ptc.GetEndianness())
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{
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InvalidateCompressedStream(compressedStream);
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return false;
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}
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using (MemoryStream stream = new MemoryStream())
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{
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Debug.Assert(stream.Seek(0L, SeekOrigin.Begin) == 0L && stream.Length == 0L);
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try
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{
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deflateStream.CopyTo(stream);
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}
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catch
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{
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InvalidateCompressedStream(compressedStream);
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return false;
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}
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Debug.Assert(stream.Position == stream.Length);
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stream.Seek(0L, SeekOrigin.Begin);
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Hash128 expectedHash = DeserializeStructure<Hash128>(stream);
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Hash128 actualHash = XXHash128.ComputeHash(GetReadOnlySpan(stream));
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if (actualHash != expectedHash)
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{
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InvalidateCompressedStream(compressedStream);
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return false;
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}
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ProfiledFuncs = Deserialize(stream);
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Debug.Assert(stream.Position == stream.Length);
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_lastHash = actualHash;
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}
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}
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long fileSize = new FileInfo(fileName).Length;
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Logger.Info?.Print(LogClass.Ptc, $"{(isBackup ? "Loaded Backup Profiling Info" : "Loaded Profiling Info")} (size: {fileSize} bytes, profiled functions: {ProfiledFuncs.Count}).");
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return true;
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}
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private static Dictionary<ulong, FuncProfile> Deserialize(Stream stream)
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{
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return DeserializeDictionary<ulong, FuncProfile>(stream, (stream) => DeserializeStructure<FuncProfile>(stream));
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}
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private ReadOnlySpan<byte> GetReadOnlySpan(MemoryStream memoryStream)
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{
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return new(memoryStream.GetBuffer(), (int)memoryStream.Position, (int)memoryStream.Length - (int)memoryStream.Position);
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}
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private void InvalidateCompressedStream(FileStream compressedStream)
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{
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compressedStream.SetLength(0L);
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}
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private void PreSave(object source, System.Timers.ElapsedEventArgs e)
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{
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_waitEvent.Reset();
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string fileNameActual = string.Concat(_ptc.CachePathActual, ".info");
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string fileNameBackup = string.Concat(_ptc.CachePathBackup, ".info");
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FileInfo fileInfoActual = new FileInfo(fileNameActual);
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if (fileInfoActual.Exists && fileInfoActual.Length != 0L)
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{
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File.Copy(fileNameActual, fileNameBackup, true);
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}
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Save(fileNameActual);
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_waitEvent.Set();
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}
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private void Save(string fileName)
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{
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int profiledFuncsCount;
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OuterHeader outerHeader = new OuterHeader();
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outerHeader.Magic = _outerHeaderMagic;
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outerHeader.InfoFileVersion = InternalVersion;
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outerHeader.Endianness = Ptc.GetEndianness();
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outerHeader.SetHeaderHash();
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using (MemoryStream stream = new MemoryStream())
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{
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Debug.Assert(stream.Seek(0L, SeekOrigin.Begin) == 0L && stream.Length == 0L);
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stream.Seek((long)Unsafe.SizeOf<Hash128>(), SeekOrigin.Begin);
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lock (_lock)
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{
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Serialize(stream, ProfiledFuncs);
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profiledFuncsCount = ProfiledFuncs.Count;
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}
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Debug.Assert(stream.Position == stream.Length);
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stream.Seek((long)Unsafe.SizeOf<Hash128>(), SeekOrigin.Begin);
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Hash128 hash = XXHash128.ComputeHash(GetReadOnlySpan(stream));
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stream.Seek(0L, SeekOrigin.Begin);
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SerializeStructure(stream, hash);
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if (hash == _lastHash)
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{
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return;
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}
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using (FileStream compressedStream = new(fileName, FileMode.OpenOrCreate))
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using (DeflateStream deflateStream = new(compressedStream, SaveCompressionLevel, true))
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{
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try
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{
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SerializeStructure(compressedStream, outerHeader);
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stream.WriteTo(deflateStream);
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_lastHash = hash;
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}
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catch
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{
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compressedStream.Position = 0L;
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_lastHash = default;
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}
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if (compressedStream.Position < compressedStream.Length)
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{
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compressedStream.SetLength(compressedStream.Position);
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}
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}
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}
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long fileSize = new FileInfo(fileName).Length;
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if (fileSize != 0L)
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{
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Logger.Info?.Print(LogClass.Ptc, $"Saved Profiling Info (size: {fileSize} bytes, profiled functions: {profiledFuncsCount}).");
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}
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}
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private void Serialize(Stream stream, Dictionary<ulong, FuncProfile> profiledFuncs)
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{
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SerializeDictionary(stream, profiledFuncs, (stream, structure) => SerializeStructure(stream, structure));
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1/*, Size = 29*/)]
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private struct OuterHeader
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{
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public ulong Magic;
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public uint InfoFileVersion;
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public bool Endianness;
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public Hash128 HeaderHash;
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public void SetHeaderHash()
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{
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Span<OuterHeader> spanHeader = MemoryMarshal.CreateSpan(ref this, 1);
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HeaderHash = XXHash128.ComputeHash(MemoryMarshal.AsBytes(spanHeader).Slice(0, Unsafe.SizeOf<OuterHeader>() - Unsafe.SizeOf<Hash128>()));
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}
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public bool IsHeaderValid()
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{
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Span<OuterHeader> spanHeader = MemoryMarshal.CreateSpan(ref this, 1);
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return XXHash128.ComputeHash(MemoryMarshal.AsBytes(spanHeader).Slice(0, Unsafe.SizeOf<OuterHeader>() - Unsafe.SizeOf<Hash128>())) == HeaderHash;
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}
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1/*, Size = 5*/)]
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public struct FuncProfile
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{
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public ExecutionMode Mode;
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public bool HighCq;
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public FuncProfile(ExecutionMode mode, bool highCq)
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{
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Mode = mode;
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HighCq = highCq;
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}
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}
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public void Start()
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{
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if (_ptc.State == PtcState.Enabled ||
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_ptc.State == PtcState.Continuing)
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{
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Enabled = true;
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_timer.Enabled = true;
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}
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}
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public void Stop()
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{
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Enabled = false;
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if (!_disposed)
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{
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_timer.Enabled = false;
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}
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}
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public void Wait()
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{
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_waitEvent.WaitOne();
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}
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public void Dispose()
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{
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if (!_disposed)
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{
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_disposed = true;
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_timer.Elapsed -= PreSave;
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_timer.Dispose();
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Wait();
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_waitEvent.Dispose();
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}
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}
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}
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} |